1268 lines
39 KiB
PHP
1268 lines
39 KiB
PHP
<?php
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/**
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* @file
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* Contains code to make it easier to have exportable objects.
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*
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* Documentation for exportable objects is contained in help/export.html
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*/
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/**
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* A bit flag used to let us know if an object is in the database.
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*/
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define('EXPORT_IN_DATABASE', 0x01);
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/**
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* A bit flag used to let us know if an object is a 'default' in code.
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*/
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define('EXPORT_IN_CODE', 0x02);
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/**
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* @defgroup export_crud CRUD functions for export.
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* @{
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* export.inc supports a small number of CRUD functions that should always
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* work for every exportable object, no matter how complicated. These
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* functions allow complex objects to provide their own callbacks, but
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* in most cases, the default callbacks will be used.
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*
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* Note that defaults are NOT set in the $schema because it is presumed
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* that a module's personalized CRUD functions will already know which
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* $table to use and not want to clutter up the arguments with it.
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*/
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/**
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* Create a new object for the given $table.
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*
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* @param $table
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* The name of the table to use to retrieve $schema values. This table
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* must have an 'export' section containing data or this function
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* will fail.
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* @param $set_defaults
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* If TRUE, which is the default, then default values will be retrieved
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* from schema fields and set on the object.
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*
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* @return
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* The loaded object.
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*/
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function ctools_export_crud_new($table, $set_defaults = TRUE) {
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$schema = ctools_export_get_schema($table);
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$export = $schema['export'];
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if (!empty($export['create callback']) && function_exists($export['create callback'])) {
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return $export['create callback']($set_defaults);
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}
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else {
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return ctools_export_new_object($table, $set_defaults);
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}
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}
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/**
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* Load a single exportable object.
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*
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* @param $table
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* The name of the table to use to retrieve $schema values. This table
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* must have an 'export' section containing data or this function
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* will fail.
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* @param $name
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* The unique ID to load. The field for this ID will be specified by
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* the export key, which normally defaults to 'name'.
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*
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* @return
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* The loaded object.
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*/
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function ctools_export_crud_load($table, $name) {
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$schema = ctools_export_get_schema($table);
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$export = $schema['export'];
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if (!empty($export['load callback']) && function_exists($export['load callback'])) {
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return $export['load callback']($name);
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}
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else {
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$result = ctools_export_load_object($table, 'names', array($name));
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if (isset($result[$name])) {
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return $result[$name];
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}
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}
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}
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/**
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* Load multiple exportable objects.
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*
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* @param $table
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* The name of the table to use to retrieve $schema values. This table
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* must have an 'export' section containing data or this function
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* will fail.
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* @param $names
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* An array of unique IDs to load. The field for these IDs will be specified
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* by the export key, which normally defaults to 'name'.
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*
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* @return
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* An array of the loaded objects.
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*/
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function ctools_export_crud_load_multiple($table, array $names) {
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$schema = ctools_export_get_schema($table);
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$export = $schema['export'];
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$results = array();
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if (!empty($export['load multiple callback']) && function_exists($export['load multiple callback'])) {
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$results = $export['load multiple callback']($names);
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}
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else {
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$results = ctools_export_load_object($table, 'names', $names);
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}
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// Ensure no empty results are returned.
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return array_filter($results);
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}
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/**
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* Load all exportable objects of a given type.
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*
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* @param $table
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* The name of the table to use to retrieve $schema values. This table
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* must have an 'export' section containing data or this function
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* will fail.
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* @param $reset
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* If TRUE, the static cache of all objects will be flushed prior to
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* loading all. This can be important on listing pages where items
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* might have changed on the page load.
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* @return
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* An array of all loaded objects, keyed by the unique IDs of the export key.
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*/
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function ctools_export_crud_load_all($table, $reset = FALSE) {
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$schema = ctools_export_get_schema($table);
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if (empty($schema['export'])) {
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return array();
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}
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$export = $schema['export'];
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if ($reset) {
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ctools_export_load_object_reset($table);
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}
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if (!empty($export['load all callback']) && function_exists($export['load all callback'])) {
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return $export['load all callback']($reset);
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}
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else {
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return ctools_export_load_object($table, 'all');
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}
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}
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/**
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* Save a single exportable object.
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*
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* @param $table
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* The name of the table to use to retrieve $schema values. This table
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* must have an 'export' section containing data or this function
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* will fail.
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* @param $object
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* The fully populated object to save.
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*
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* @return
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* Failure to write a record will return FALSE. Otherwise SAVED_NEW or
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* SAVED_UPDATED is returned depending on the operation performed. The
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* $object parameter contains values for any serial fields defined by the $table
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*/
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function ctools_export_crud_save($table, &$object) {
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$schema = ctools_export_get_schema($table);
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$export = $schema['export'];
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if (!empty($export['save callback']) && function_exists($export['save callback'])) {
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return $export['save callback']($object);
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}
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else {
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// Objects should have a serial primary key. If not, simply fail to write.
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if (empty($export['primary key'])) {
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return FALSE;
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}
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$key = $export['primary key'];
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if ($object->export_type & EXPORT_IN_DATABASE) {
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// Existing record.
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$update = array($key);
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}
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else {
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// New record.
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$update = array();
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$object->export_type = EXPORT_IN_DATABASE;
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}
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return drupal_write_record($table, $object, $update);
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}
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}
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/**
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* Delete a single exportable object.
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*
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* This only deletes from the database, which means that if an item is in
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* code, then this is actually a revert.
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*
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* @param $table
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* The name of the table to use to retrieve $schema values. This table
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* must have an 'export' section containing data or this function
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* will fail.
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* @param $object
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* The fully populated object to delete, or the export key.
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*/
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function ctools_export_crud_delete($table, $object) {
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$schema = ctools_export_get_schema($table);
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$export = $schema['export'];
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if (!empty($export['delete callback']) && function_exists($export['delete callback'])) {
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return $export['delete callback']($object);
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}
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else {
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// If we were sent an object, get the export key from it. Otherwise
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// assume we were sent the export key.
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$value = is_object($object) ? $object->{$export['key']} : $object;
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db_delete($table)
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->condition($export['key'], $value)
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->execute();
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}
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}
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/**
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* Get the exported code of a single exportable object.
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*
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* @param $table
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* The name of the table to use to retrieve $schema values. This table
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* must have an 'export' section containing data or this function
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* will fail.
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* @param $object
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* The fully populated object to delete, or the export key.
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* @param $indent
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* Any indentation to apply to the code, in case this object is embedded
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* into another, for example.
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*
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* @return
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* A string containing the executable export of the object.
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*/
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function ctools_export_crud_export($table, $object, $indent = '') {
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$schema = ctools_export_get_schema($table);
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$export = $schema['export'];
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if (!empty($export['export callback']) && function_exists($export['export callback'])) {
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return $export['export callback']($object, $indent);
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}
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else {
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return ctools_export_object($table, $object, $indent);
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}
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}
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/**
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* Turn exported code into an object.
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*
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* Note: If the code is poorly formed, this could crash and there is no
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* way to prevent this.
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*
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* @param $table
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* The name of the table to use to retrieve $schema values. This table
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* must have an 'export' section containing data or this function
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* will fail.
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* @param $code
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* The code to eval to create the object.
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*
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* @return
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* An object created from the export. This object will NOT have been saved
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* to the database. In the case of failure, a string containing all errors
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* that the system was able to determine.
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*/
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function ctools_export_crud_import($table, $code) {
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$schema = ctools_export_get_schema($table);
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$export = $schema['export'];
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if (!empty($export['import callback']) && function_exists($export['import callback'])) {
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return $export['import callback']($code);
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}
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else {
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ob_start();
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eval($code);
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ob_end_clean();
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if (empty(${$export['identifier']})) {
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$errors = ob_get_contents();
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if (empty($errors)) {
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$errors = t('No item found.');
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}
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return $errors;
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}
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$item = ${$export['identifier']};
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// Set these defaults just the same way that ctools_export_new_object sets
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// them.
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$item->export_type = NULL;
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$item->{$export['export type string']} = t('Local');
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return $item;
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}
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}
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/**
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* Change the status of a certain object.
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*
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* @param $table
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* The name of the table to use to enable a certain object. This table
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* must have an 'export' section containing data or this function
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* will fail.
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* @param $object
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* The fully populated object to enable, or the machine readable name.
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* @param $status
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* The status, in this case, is whether or not it is 'disabled'.
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*/
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function ctools_export_crud_set_status($table, $object, $status) {
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$schema = ctools_export_get_schema($table);
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$export = $schema['export'];
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if (!empty($export['status callback']) && function_exists($export['status callback'])) {
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$export['status callback']($object, $status);
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}
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else {
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if (is_object($object)) {
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ctools_export_set_object_status($object, $status);
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}
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else {
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ctools_export_set_status($table, $object, $status);
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}
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}
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}
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/**
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* Enable a certain object.
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*
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* @param $table
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* The name of the table to use to enable a certain object. This table
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* must have an 'export' section containing data or this function
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* will fail.
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* @param $object
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* The fully populated object to enable, or the machine readable name.
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*/
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function ctools_export_crud_enable($table, $object) {
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return ctools_export_crud_set_status($table, $object, FALSE);
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}
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/**
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* Disable a certain object.
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*
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* @param $table
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* The name of the table to use to disable a certain object. This table
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* must have an 'export' section containing data or this function
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* will fail.
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* @param $object
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* The fully populated object to disable, or the machine readable name.
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*/
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function ctools_export_crud_disable($table, $object) {
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return ctools_export_crud_set_status($table, $object, TRUE);
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}
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/**
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* @}
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*/
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/**
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* Load some number of exportable objects.
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*
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* This function will cache the objects, load subsidiary objects if necessary,
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* check default objects in code and properly set them up. It will cache
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* the results so that multiple calls to load the same objects
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* will not cause problems.
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*
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* It attempts to reduce, as much as possible, the number of queries
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* involved.
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*
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* @param $table
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* The name of the table to be loaded from. Data is expected to be in the
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* schema to make all this work.
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* @param $type
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* A string to notify the loader what the argument is
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* - all: load all items. This is the default. $args is unused.
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* - names: $args will be an array of specific named objects to load.
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* - conditions: $args will be a keyed array of conditions. The conditions
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* must be in the schema for this table or errors will result.
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* @param $args
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* An array of arguments whose actual use is defined by the $type argument.
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*/
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function ctools_export_load_object($table, $type = 'all', $args = array()) {
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$cache = &drupal_static(__FUNCTION__);
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$cache_table_exists = &drupal_static(__FUNCTION__ . '_table_exists', array());
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$cached_database = &drupal_static('ctools_export_load_object_all');
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if (!array_key_exists($table, $cache_table_exists)) {
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$cache_table_exists[$table] = db_table_exists($table);
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}
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$schema = ctools_export_get_schema($table);
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if (empty($schema) || !$cache_table_exists[$table]) {
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return array();
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}
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$export = $schema['export'];
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if (!isset($cache[$table])) {
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$cache[$table] = array();
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}
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// If fetching all and cached all, we've done so and we are finished.
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if ($type == 'all' && !empty($cached_database[$table])) {
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return $cache[$table];
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}
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$return = array();
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// Don't load anything we've already cached.
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if ($type == 'names' && !empty($args)) {
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foreach ($args as $id => $name) {
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if (isset($cache[$table][$name])) {
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$return[$name] = $cache[$table][$name];
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unset($args[$id]);
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}
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}
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// If nothing left to load, return the result.
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if (empty($args)) {
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return $return;
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}
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}
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// Build the query
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$query = db_select($table, 't__0')->fields('t__0');
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$alias_count = 1;
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if (!empty($schema['join'])) {
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foreach ($schema['join'] as $join_key => $join) {
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if ($join_schema = drupal_get_schema($join['table'])) {
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$query->join($join['table'], 't__' . $alias_count, 't__0.' . $join['left_key'] . ' = ' . 't__' . $alias_count . '.' . $join['right_key']);
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$query->fields('t__' . $alias_count);
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$alias_count++;
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// Allow joining tables to alter the query through a callback.
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if (isset($join['callback']) && function_exists($join['callback'])) {
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$join['callback']($query, $schema, $join_schema);
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}
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}
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}
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}
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$conditions = array();
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$query_args = array();
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// If they passed in names, add them to the query.
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if ($type == 'names') {
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$query->condition($export['key'], $args, 'IN');
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}
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else if ($type == 'conditions') {
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foreach ($args as $key => $value) {
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if (isset($schema['fields'][$key])) {
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$query->condition($key, $value);
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}
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}
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}
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$result = $query->execute();
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$status = variable_get($export['status'], array());
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// Unpack the results of the query onto objects and cache them.
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foreach ($result as $data) {
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if (isset($schema['export']['object factory']) && function_exists($schema['export']['object factory'])) {
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$object = $schema['export']['object factory']($schema, $data);
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}
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else {
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$object = _ctools_export_unpack_object($schema, $data, $export['object']);
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}
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$object->table = $table;
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$object->{$export['export type string']} = t('Normal');
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$object->export_type = EXPORT_IN_DATABASE;
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// Determine if default object is enabled or disabled.
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if (isset($status[$object->{$export['key']}])) {
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$object->disabled = $status[$object->{$export['key']}];
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}
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$cache[$table][$object->{$export['key']}] = $object;
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if ($type == 'conditions') {
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$return[$object->{$export['key']}] = $object;
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}
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}
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// Load subrecords.
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if (isset($export['subrecords callback']) && function_exists($export['subrecords callback'])) {
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$export['subrecords callback']($cache[$table]);
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}
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if ($type == 'names' && !empty($args) && !empty($export['cache defaults'])) {
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$defaults = _ctools_export_get_some_defaults($table, $export, $args);
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}
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else {
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$defaults = _ctools_export_get_defaults($table, $export);
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}
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if ($defaults) {
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foreach ($defaults as $object) {
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if ($type == 'conditions') {
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// if this does not match all of our conditions, skip it.
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foreach ($args as $key => $value) {
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if (!isset($object->$key)) {
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continue 2;
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}
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if (is_array($value)) {
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if (!in_array($object->$key, $value)) {
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continue 2;
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}
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}
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else if ($object->$key != $value) {
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continue 2;
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}
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}
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}
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else if ($type == 'names') {
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if (!in_array($object->{$export['key']}, $args)) {
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continue;
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}
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}
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// Determine if default object is enabled or disabled.
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if (isset($status[$object->{$export['key']}])) {
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$object->disabled = $status[$object->{$export['key']}];
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}
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if (!empty($cache[$table][$object->{$export['key']}])) {
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$cache[$table][$object->{$export['key']}]->{$export['export type string']} = t('Overridden');
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$cache[$table][$object->{$export['key']}]->export_type |= EXPORT_IN_CODE;
|
|
$cache[$table][$object->{$export['key']}]->export_module = isset($object->export_module) ? $object->export_module : NULL;
|
|
if ($type == 'conditions') {
|
|
$return[$object->{$export['key']}] = $cache[$table][$object->{$export['key']}];
|
|
}
|
|
}
|
|
else {
|
|
$object->{$export['export type string']} = t('Default');
|
|
$object->export_type = EXPORT_IN_CODE;
|
|
$object->in_code_only = TRUE;
|
|
$object->table = $table;
|
|
|
|
$cache[$table][$object->{$export['key']}] = $object;
|
|
if ($type == 'conditions') {
|
|
$return[$object->{$export['key']}] = $object;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// If fetching all, we've done so and we are finished.
|
|
if ($type == 'all') {
|
|
$cached_database[$table] = TRUE;
|
|
return $cache[$table];
|
|
}
|
|
|
|
if ($type == 'names') {
|
|
foreach ($args as $name) {
|
|
if (isset($cache[$table][$name])) {
|
|
$return[$name] = $cache[$table][$name];
|
|
}
|
|
}
|
|
}
|
|
|
|
// For conditions,
|
|
return $return;
|
|
}
|
|
|
|
/**
|
|
* Reset all static caches in ctools_export_load_object() or static caches for
|
|
* a given table in ctools_export_load_object().
|
|
*
|
|
* @param $table
|
|
* String that is the name of a table. If not defined, all static caches in
|
|
* ctools_export_load_object() will be reset.
|
|
*/
|
|
function ctools_export_load_object_reset($table = NULL) {
|
|
// Reset plugin cache to make sure new include files are picked up.
|
|
ctools_include('plugins');
|
|
ctools_get_plugins_reset();
|
|
if (empty($table)) {
|
|
drupal_static_reset('ctools_export_load_object');
|
|
drupal_static_reset('ctools_export_load_object_all');
|
|
drupal_static_reset('_ctools_export_get_defaults');
|
|
}
|
|
else {
|
|
$cache = &drupal_static('ctools_export_load_object');
|
|
$cached_database = &drupal_static('ctools_export_load_object_all');
|
|
$cached_defaults = &drupal_static('_ctools_export_get_defaults');
|
|
unset($cache[$table]);
|
|
unset($cached_database[$table]);
|
|
unset($cached_defaults[$table]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the default version of an object, if it exists.
|
|
*
|
|
* This function doesn't care if an object is in the database or not and
|
|
* does not check. This means that export_type could appear to be incorrect,
|
|
* because a version could exist in the database. However, it's not
|
|
* incorrect for this function as it is *only* used for the default
|
|
* in code version.
|
|
*/
|
|
function ctools_get_default_object($table, $name) {
|
|
$schema = ctools_export_get_schema($table);
|
|
$export = $schema['export'];
|
|
|
|
if (!$export['default hook']) {
|
|
return;
|
|
}
|
|
|
|
// Try to load individually from cache if this cache is enabled.
|
|
if (!empty($export['cache defaults'])) {
|
|
$defaults = _ctools_export_get_some_defaults($table, $export, array($name));
|
|
}
|
|
else {
|
|
$defaults = _ctools_export_get_defaults($table, $export);
|
|
}
|
|
|
|
$status = variable_get($export['status'], array());
|
|
|
|
if (!isset($defaults[$name])) {
|
|
return;
|
|
}
|
|
|
|
$object = $defaults[$name];
|
|
|
|
// Determine if default object is enabled or disabled.
|
|
if (isset($status[$object->{$export['key']}])) {
|
|
$object->disabled = $status[$object->{$export['key']}];
|
|
}
|
|
|
|
$object->{$export['export type string']} = t('Default');
|
|
$object->export_type = EXPORT_IN_CODE;
|
|
$object->in_code_only = TRUE;
|
|
|
|
return $object;
|
|
}
|
|
|
|
/**
|
|
* Call the hook to get all default objects of the given type from the
|
|
* export. If configured properly, this could include loading up an API
|
|
* to get default objects.
|
|
*/
|
|
function _ctools_export_get_defaults($table, $export) {
|
|
$cache = &drupal_static(__FUNCTION__, array());
|
|
|
|
// If defaults may be cached, first see if we can load from cache.
|
|
if (!isset($cache[$table]) && !empty($export['cache defaults'])) {
|
|
$cache[$table] = _ctools_export_get_defaults_from_cache($table, $export);
|
|
}
|
|
|
|
if (!isset($cache[$table])) {
|
|
// If we're caching, attempt to get a lock. We will wait a short time
|
|
// on the lock, but not too long, because it's better to just rebuild
|
|
// and throw away results than wait too long on a lock.
|
|
if (!empty($export['cache defaults'])) {
|
|
for ($counter = 0; !($lock = lock_acquire('ctools_export:' . $table)) && $counter > 5; $counter++) {
|
|
lock_wait('ctools_export:' . $table, 1);
|
|
++$counter;
|
|
}
|
|
}
|
|
|
|
$cache[$table] = array();
|
|
|
|
if ($export['default hook']) {
|
|
if (!empty($export['api'])) {
|
|
ctools_include('plugins');
|
|
$info = ctools_plugin_api_include($export['api']['owner'], $export['api']['api'],
|
|
$export['api']['minimum_version'], $export['api']['current_version']);
|
|
$modules = array_keys($info);
|
|
}
|
|
else {
|
|
$modules = module_implements($export['default hook']);
|
|
}
|
|
|
|
foreach ($modules as $module) {
|
|
$function = $module . '_' . $export['default hook'];
|
|
if (function_exists($function)) {
|
|
foreach ((array) $function($export) as $name => $object) {
|
|
// Record the module that provides this exportable.
|
|
$object->export_module = $module;
|
|
|
|
if (empty($export['api'])) {
|
|
$cache[$table][$name] = $object;
|
|
}
|
|
else {
|
|
// If version checking is enabled, ensure that the object can be used.
|
|
if (isset($object->api_version) &&
|
|
version_compare($object->api_version, $export['api']['minimum_version']) >= 0 &&
|
|
version_compare($object->api_version, $export['api']['current_version']) <= 0) {
|
|
$cache[$table][$name] = $object;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
drupal_alter($export['default hook'], $cache[$table]);
|
|
|
|
// If we acquired a lock earlier, cache the results and release the
|
|
// lock.
|
|
if (!empty($lock)) {
|
|
// Cache the index.
|
|
$index = array_keys($cache[$table]);
|
|
cache_set('ctools_export_index:' . $table, $index, $export['default cache bin']);
|
|
|
|
// Cache each object.
|
|
foreach ($cache[$table] as $name => $object) {
|
|
cache_set('ctools_export:' . $table . ':' . $name, $object, $export['default cache bin']);
|
|
}
|
|
lock_release('ctools_export:' . $table);
|
|
}
|
|
}
|
|
}
|
|
|
|
return $cache[$table];
|
|
}
|
|
|
|
/**
|
|
* Attempt to load default objects from cache.
|
|
*
|
|
* We can be instructed to cache default objects by the schema. If so
|
|
* we cache them as an index which is a list of all default objects, and
|
|
* then each default object is cached individually.
|
|
*
|
|
* @return Either an array of cached objects, or NULL indicating a cache
|
|
* rebuild is necessary.
|
|
*/
|
|
function _ctools_export_get_defaults_from_cache($table, $export) {
|
|
$data = cache_get('ctools_export_index:' . $table, $export['default cache bin']);
|
|
if (!$data || !is_array($data->data)) {
|
|
return;
|
|
}
|
|
|
|
// This is the perfectly valid case where there are no default objects,
|
|
// and we have cached this state.
|
|
if (empty($data->data)) {
|
|
return array();
|
|
}
|
|
|
|
$keys = array();
|
|
foreach ($data->data as $name) {
|
|
$keys[] = 'ctools_export:' . $table . ':' . $name;
|
|
}
|
|
|
|
$data = cache_get_multiple($keys, $export['default cache bin']);
|
|
|
|
// If any of our indexed keys missed, then we have a fail and we need to
|
|
// rebuild.
|
|
if (!empty($keys)) {
|
|
return;
|
|
}
|
|
|
|
// Now, translate the returned cache objects to actual objects.
|
|
$cache = array();
|
|
foreach ($data as $cached_object) {
|
|
$cache[$cached_object->data->{$export['key']}] = $cached_object->data;
|
|
}
|
|
|
|
return $cache;
|
|
}
|
|
|
|
/**
|
|
* Get a limited number of default objects.
|
|
*
|
|
* This attempts to load the objects directly from cache. If it cannot,
|
|
* the cache is rebuilt. This does not disturb the general get defaults
|
|
* from cache object.
|
|
*
|
|
* This function should ONLY be called if default caching is enabled.
|
|
* It does not check, it is assumed the caller has already done so.
|
|
*/
|
|
function _ctools_export_get_some_defaults($table, $export, $names) {
|
|
foreach ($names as $name) {
|
|
$keys[] = 'ctools_export:' . $table . ':' . $name;
|
|
}
|
|
|
|
$data = cache_get_multiple($keys, $export['default cache bin']);
|
|
|
|
// Cache hits remove the $key from $keys by reference. Cache
|
|
// misses do not. A cache miss indicates we may have to rebuild.
|
|
if (!empty($keys)) {
|
|
return _ctools_export_get_defaults($table, $export);
|
|
}
|
|
|
|
// Now, translate the returned cache objects to actual objects.
|
|
$cache = array();
|
|
foreach ($data as $cached_object) {
|
|
$cache[$cached_object->data->{$export['key']}] = $cached_object->data;
|
|
}
|
|
|
|
return $cache;
|
|
}
|
|
|
|
/**
|
|
* Unpack data loaded from the database onto an object.
|
|
*
|
|
* @param $schema
|
|
* The schema from drupal_get_schema().
|
|
* @param $data
|
|
* The data as loaded from the database.
|
|
* @param $object
|
|
* If an object, data will be unpacked onto it. If a string
|
|
* an object of that type will be created.
|
|
*/
|
|
function _ctools_export_unpack_object($schema, $data, $object = 'stdClass') {
|
|
if (is_string($object)) {
|
|
if (class_exists($object)) {
|
|
$object = new $object;
|
|
}
|
|
else {
|
|
$object = new stdClass;
|
|
}
|
|
}
|
|
|
|
// Go through our schema and build correlations.
|
|
foreach ($schema['fields'] as $field => $info) {
|
|
if (isset($data->$field)) {
|
|
$object->$field = empty($info['serialize']) ? $data->$field : unserialize($data->$field);
|
|
}
|
|
else {
|
|
$object->$field = NULL;
|
|
}
|
|
}
|
|
|
|
if (isset($schema['join'])) {
|
|
foreach ($schema['join'] as $join_key => $join) {
|
|
$join_schema = ctools_export_get_schema($join['table']);
|
|
if (!empty($join['load'])) {
|
|
foreach ($join['load'] as $field) {
|
|
$info = $join_schema['fields'][$field];
|
|
$object->$field = empty($info['serialize']) ? $data->$field : unserialize($data->$field);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return $object;
|
|
}
|
|
|
|
/**
|
|
* Unpack data loaded from the database onto an object.
|
|
*
|
|
* @param $table
|
|
* The name of the table this object represents.
|
|
* @param $data
|
|
* The data as loaded from the database.
|
|
*/
|
|
function ctools_export_unpack_object($table, $data) {
|
|
$schema = ctools_export_get_schema($table);
|
|
return _ctools_export_unpack_object($schema, $data, $schema['export']['object']);
|
|
}
|
|
|
|
/**
|
|
* Export a field.
|
|
*
|
|
* This is a replacement for var_export(), allowing us to more nicely
|
|
* format exports. It will recurse down into arrays and will try to
|
|
* properly export bools when it can, though PHP has a hard time with
|
|
* this since they often end up as strings or ints.
|
|
*/
|
|
function ctools_var_export($var, $prefix = '') {
|
|
if (is_array($var)) {
|
|
if (empty($var)) {
|
|
$output = 'array()';
|
|
}
|
|
else {
|
|
$output = "array(\n";
|
|
foreach ($var as $key => $value) {
|
|
$output .= $prefix . " " . ctools_var_export($key) . " => " . ctools_var_export($value, $prefix . ' ') . ",\n";
|
|
}
|
|
$output .= $prefix . ')';
|
|
}
|
|
}
|
|
else if (is_object($var) && get_class($var) === 'stdClass') {
|
|
// var_export() will export stdClass objects using an undefined
|
|
// magic method __set_state() leaving the export broken. This
|
|
// workaround avoids this by casting the object as an array for
|
|
// export and casting it back to an object when evaluated.
|
|
$output = '(object) ' . ctools_var_export((array) $var, $prefix);
|
|
}
|
|
else if (is_bool($var)) {
|
|
$output = $var ? 'TRUE' : 'FALSE';
|
|
}
|
|
else {
|
|
$output = var_export($var, TRUE);
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Export an object into code.
|
|
*/
|
|
function ctools_export_object($table, $object, $indent = '', $identifier = NULL, $additions = array(), $additions2 = array()) {
|
|
$schema = ctools_export_get_schema($table);
|
|
if (!isset($identifier)) {
|
|
$identifier = $schema['export']['identifier'];
|
|
}
|
|
|
|
$output = $indent . '$' . $identifier . ' = new ' . get_class($object) . "();\n";
|
|
|
|
if ($schema['export']['can disable']) {
|
|
$output .= $indent . '$' . $identifier . '->disabled = FALSE; /* Edit this to true to make a default ' . $identifier . ' disabled initially */' . "\n";
|
|
}
|
|
if (!empty($schema['export']['api']['current_version'])) {
|
|
$output .= $indent . '$' . $identifier . '->api_version = ' . $schema['export']['api']['current_version'] . ";\n";
|
|
}
|
|
|
|
// Put top additions here:
|
|
foreach ($additions as $field => $value) {
|
|
$output .= $indent . '$' . $identifier . '->' . $field . ' = ' . ctools_var_export($value, $indent) . ";\n";
|
|
}
|
|
|
|
$fields = $schema['fields'];
|
|
if (!empty($schema['join'])) {
|
|
foreach ($schema['join'] as $join) {
|
|
if (!empty($join['load'])) {
|
|
foreach ($join['load'] as $join_field) {
|
|
$fields[$join_field] = $join['fields'][$join_field];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Go through our schema and joined tables and build correlations.
|
|
foreach ($fields as $field => $info) {
|
|
if (!empty($info['no export'])) {
|
|
continue;
|
|
}
|
|
if (!isset($object->$field)) {
|
|
if (isset($info['default'])) {
|
|
$object->$field = $info['default'];
|
|
}
|
|
else {
|
|
$object->$field = '';
|
|
}
|
|
}
|
|
|
|
// Note: This is the *field* export callback, not the table one!
|
|
if (!empty($info['export callback']) && function_exists($info['export callback'])) {
|
|
$output .= $indent . '$' . $identifier . '->' . $field . ' = ' . $info['export callback']($object, $field, $object->$field, $indent) . ";\n";
|
|
}
|
|
else {
|
|
$value = $object->$field;
|
|
if ($info['type'] == 'int') {
|
|
if (isset($info['size']) && $info['size'] == 'tiny') {
|
|
$info['boolean'] = (!isset($info['boolean'])) ? $schema['export']['boolean'] : $info['boolean'];
|
|
$value = ($info['boolean']) ? (bool) $value : (int) $value;
|
|
}
|
|
else {
|
|
$value = (int) $value;
|
|
}
|
|
}
|
|
|
|
$output .= $indent . '$' . $identifier . '->' . $field . ' = ' . ctools_var_export($value, $indent) . ";\n";
|
|
}
|
|
}
|
|
|
|
// And bottom additions here
|
|
foreach ($additions2 as $field => $value) {
|
|
$output .= $indent . '$' . $identifier . '->' . $field . ' = ' . ctools_var_export($value, $indent) . ";\n";
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Get the schema for a given table.
|
|
*
|
|
* This looks for data the export subsystem needs and applies defaults so
|
|
* that it's easily available.
|
|
*/
|
|
function ctools_export_get_schema($table) {
|
|
static $drupal_static_fast;
|
|
if (!isset($drupal_static_fast)) {
|
|
$drupal_static_fast['cache'] = &drupal_static(__FUNCTION__);
|
|
}
|
|
$cache = &$drupal_static_fast['cache'];
|
|
|
|
if (empty($cache[$table])) {
|
|
$schema = drupal_get_schema($table);
|
|
|
|
// If our schema isn't loaded, it's possible we're in a state where it
|
|
// simply hasn't been cached. If we've been asked, let's force the
|
|
// issue.
|
|
if (!$schema || empty($schema['export'])) {
|
|
// force a schema reset:
|
|
$schema = drupal_get_schema($table, TRUE);
|
|
}
|
|
|
|
if (!isset($schema['export'])) {
|
|
return array();
|
|
}
|
|
|
|
if (empty($schema['module'])) {
|
|
return array();
|
|
}
|
|
|
|
// Add some defaults
|
|
$schema['export'] += array(
|
|
'key' => 'name',
|
|
'key name' => 'Name',
|
|
'object' => 'stdClass',
|
|
'status' => 'default_' . $table,
|
|
'default hook' => 'default_' . $table,
|
|
'can disable' => TRUE,
|
|
'identifier' => $table,
|
|
'primary key' => !empty($schema['primary key']) ? $schema['primary key'][0] : '',
|
|
'bulk export' => TRUE,
|
|
'list callback' => "$schema[module]_{$table}_list",
|
|
'to hook code callback' => "$schema[module]_{$table}_to_hook_code",
|
|
'cache defaults' => FALSE,
|
|
'default cache bin' => 'cache',
|
|
'export type string' => 'type',
|
|
'boolean' => TRUE,
|
|
);
|
|
|
|
// If the export definition doesn't have the "primary key" then the CRUD
|
|
// save callback won't work.
|
|
if (empty($schema['export']['primary key']) && user_access('administer site configuration')) {
|
|
drupal_set_message(t('The export definition of @table is missing the "primary key" property.', array('@table' => $table)), 'error');
|
|
}
|
|
|
|
// Notes:
|
|
// The following callbacks may be defined to override default behavior
|
|
// when using CRUD functions:
|
|
//
|
|
// create callback
|
|
// load callback
|
|
// load multiple callback
|
|
// load all callback
|
|
// save callback
|
|
// delete callback
|
|
// export callback
|
|
// import callback
|
|
//
|
|
// See the appropriate ctools_export_crud function for details on what
|
|
// arguments these callbacks should accept. Please do not call these
|
|
// directly, always use the ctools_export_crud_* wrappers to ensure
|
|
// that default implementations are honored.
|
|
$cache[$table] = $schema;
|
|
}
|
|
|
|
return $cache[$table];
|
|
}
|
|
|
|
/**
|
|
* Gets the schemas for all tables with ctools object metadata.
|
|
*/
|
|
function ctools_export_get_schemas($for_export = FALSE) {
|
|
$export_tables = &drupal_static(__FUNCTION__);
|
|
if (is_null($export_tables)) {
|
|
$export_tables = array();
|
|
$schemas = drupal_get_schema();
|
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foreach ($schemas as $table => $schema) {
|
|
if (!isset($schema['export'])) {
|
|
unset($schemas[$table]);
|
|
continue;
|
|
}
|
|
$export_tables[$table] = ctools_export_get_schema($table);
|
|
}
|
|
}
|
|
return $for_export ? array_filter($export_tables, '_ctools_export_filter_export_tables') : $export_tables;
|
|
}
|
|
|
|
function _ctools_export_filter_export_tables($schema) {
|
|
return !empty($schema['export']['bulk export']);
|
|
}
|
|
|
|
function ctools_export_get_schemas_by_module($modules = array(), $for_export = FALSE) {
|
|
$export_tables = array();
|
|
$list = ctools_export_get_schemas($for_export);
|
|
foreach ($list as $table => $schema) {
|
|
$export_tables[$schema['module']][$table] = $schema;
|
|
}
|
|
return empty($modules) ? $export_tables : array_keys($export_tables, $modules);
|
|
}
|
|
|
|
/**
|
|
* Set the status of a default $object as a variable.
|
|
*
|
|
* The status, in this case, is whether or not it is 'disabled'.
|
|
* This function does not check to make sure $object actually
|
|
* exists.
|
|
*/
|
|
function ctools_export_set_status($table, $name, $new_status = TRUE) {
|
|
$schema = ctools_export_get_schema($table);
|
|
$status = variable_get($schema['export']['status'], array());
|
|
|
|
$status[$name] = $new_status;
|
|
variable_set($schema['export']['status'], $status);
|
|
}
|
|
|
|
/**
|
|
* Set the status of a default $object as a variable.
|
|
*
|
|
* This is more efficient than ctools_export_set_status because it
|
|
* will actually unset the variable entirely if it's not necessary,
|
|
* this saving a bit of space.
|
|
*/
|
|
function ctools_export_set_object_status($object, $new_status = TRUE) {
|
|
$table = $object->table;
|
|
$schema = ctools_export_get_schema($table);
|
|
$export = $schema['export'];
|
|
$status = variable_get($export['status'], array());
|
|
|
|
// Compare
|
|
if (!$new_status && $object->export_type & EXPORT_IN_DATABASE) {
|
|
unset($status[$object->{$export['key']}]);
|
|
}
|
|
else {
|
|
$status[$object->{$export['key']}] = $new_status;
|
|
}
|
|
|
|
variable_set($export['status'], $status);
|
|
}
|
|
|
|
/**
|
|
* Provide a form for displaying an export.
|
|
*
|
|
* This is a simple form that should be invoked like this:
|
|
* @code
|
|
* $output = drupal_get_form('ctools_export_form', $code, $object_title);
|
|
* @endcode
|
|
*/
|
|
function ctools_export_form($form, &$form_state, $code, $title = '') {
|
|
$lines = substr_count($code, "\n");
|
|
$form['code'] = array(
|
|
'#type' => 'textarea',
|
|
'#title' => $title,
|
|
'#default_value' => $code,
|
|
'#rows' => $lines,
|
|
);
|
|
|
|
return $form;
|
|
}
|
|
|
|
/**
|
|
* Create a new object based upon schema values.
|
|
*
|
|
* Because 'default' has ambiguous meaning on some fields, we will actually
|
|
* use 'object default' to fill in default values if default is not set
|
|
* That's a little safer to use as it won't cause weird database default
|
|
* situations.
|
|
*/
|
|
function ctools_export_new_object($table, $set_defaults = TRUE) {
|
|
$schema = ctools_export_get_schema($table);
|
|
$export = $schema['export'];
|
|
|
|
$object = new $export['object'];
|
|
foreach ($schema['fields'] as $field => $info) {
|
|
if (isset($info['object default'])) {
|
|
$object->$field = $info['object default'];
|
|
}
|
|
else if (isset($info['default'])) {
|
|
$object->$field = $info['default'];
|
|
}
|
|
else {
|
|
$object->$field = NULL;
|
|
}
|
|
}
|
|
|
|
if ($set_defaults) {
|
|
// Set some defaults so this data always exists.
|
|
// We don't set the export_type property here, as this object is not saved
|
|
// yet. We do give it NULL so we don't generate notices trying to read it.
|
|
$object->export_type = NULL;
|
|
$object->{$export['export type string']} = t('Local');
|
|
}
|
|
return $object;
|
|
}
|
|
|
|
/**
|
|
* Convert a group of objects to code based upon input and return this as a larger
|
|
* export.
|
|
*/
|
|
function ctools_export_to_hook_code(&$code, $table, $names = array(), $name = 'foo') {
|
|
$schema = ctools_export_get_schema($table);
|
|
$export = $schema['export'];
|
|
// Use the schema-specified function for generating hook code, if one exists
|
|
if (function_exists($export['to hook code callback'])) {
|
|
$output = $export['to hook code callback']($names, $name);
|
|
}
|
|
// Otherwise, the following code generates basic hook code
|
|
else {
|
|
$output = ctools_export_default_to_hook_code($schema, $table, $names, $name);
|
|
}
|
|
|
|
if (!empty($output)) {
|
|
if (isset($export['api'])) {
|
|
if (isset($code[$export['api']['owner']][$export['api']['api']]['version'])) {
|
|
$code[$export['api']['owner']][$export['api']['api']]['version'] = max($code[$export['api']['owner']][$export['api']['api']]['version'], $export['api']['minimum_version']);
|
|
}
|
|
else {
|
|
$code[$export['api']['owner']][$export['api']['api']]['version'] = $export['api']['minimum_version'];
|
|
$code[$export['api']['owner']][$export['api']['api']]['code'] = '';
|
|
}
|
|
$code[$export['api']['owner']][$export['api']['api']]['code'] .= $output;
|
|
}
|
|
else {
|
|
if (empty($code['general'])) {
|
|
$code['general'] = '';
|
|
}
|
|
$code['general'] .= $output;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Default function to export objects to code.
|
|
*
|
|
* Note that if your module provides a 'to hook code callback' then it will
|
|
* receive only $names and $name as arguments. Your module is presumed to
|
|
* already know the rest.
|
|
*/
|
|
function ctools_export_default_to_hook_code($schema, $table, $names, $name) {
|
|
$export = $schema['export'];
|
|
$output = '';
|
|
$objects = ctools_export_crud_load_multiple($table, $names);
|
|
if ($objects) {
|
|
$output = "/**\n";
|
|
$output .= " * Implements hook_{$export['default hook']}().\n";
|
|
$output .= " */\n";
|
|
$output .= "function " . $name . "_{$export['default hook']}() {\n";
|
|
$output .= " \${$export['identifier']}s = array();\n\n";
|
|
foreach ($objects as $object) {
|
|
$output .= ctools_export_crud_export($table, $object, ' ');
|
|
$output .= " \${$export['identifier']}s['" . check_plain($object->{$export['key']}) . "'] = \${$export['identifier']};\n\n";
|
|
}
|
|
$output .= " return \${$export['identifier']}s;\n";
|
|
$output .= "}\n";
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
/**
|
|
* Default function for listing bulk exportable objects.
|
|
*/
|
|
function ctools_export_default_list($table, $schema) {
|
|
$list = array();
|
|
|
|
$items = ctools_export_crud_load_all($table);
|
|
$export_key = $schema['export']['key'];
|
|
foreach ($items as $item) {
|
|
// Try a couple of possible obvious title keys:
|
|
$keys = array('admin_title', 'title');
|
|
if (isset($schema['export']['admin_title'])) {
|
|
array_unshift($keys, $schema['export']['admin_title']);
|
|
}
|
|
|
|
$string = '';
|
|
foreach ($keys as $key) {
|
|
if (!empty($item->$key)) {
|
|
$string = $item->$key . " (" . $item->$export_key . ")";
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (empty($string)) {
|
|
$string = $item->$export_key;
|
|
}
|
|
$list[$item->$export_key] = check_plain($string);
|
|
}
|
|
return $list;
|
|
}
|