X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs-website;a=blobdiff_plain;f=web%2Fmodules%2Fcontrib%2Ffile_mdm%2Fsrc%2FFileMetadataInterface.php;fp=web%2Fmodules%2Fcontrib%2Ffile_mdm%2Fsrc%2FFileMetadataInterface.php;h=28a28017dd2d85a2f20d7f8230d87c3ec22c6ead;hp=0000000000000000000000000000000000000000;hb=059867c3f96750652c80f39e44c442a58c2549ee;hpb=f8fc16ae6b862bef59baaad5d051dd37b7ff11b2

diff --git a/web/modules/contrib/file_mdm/src/FileMetadataInterface.php b/web/modules/contrib/file_mdm/src/FileMetadataInterface.php
new file mode 100644
index 000000000..28a28017d
--- /dev/null
+++ b/web/modules/contrib/file_mdm/src/FileMetadataInterface.php
@@ -0,0 +1,208 @@
+<?php
+
+namespace Drupal\file_mdm;
+
+/**
+ * Provides an interface for file metadata objects.
+ */
+interface FileMetadataInterface {
+
+  /**
+   * Metadata not loaded.
+   */
+  const NOT_LOADED = 0;
+
+  /**
+   * Metadata loaded by code.
+   */
+  const LOADED_BY_CODE = 1;
+
+  /**
+   * Metadata loaded from cache.
+   */
+  const LOADED_FROM_CACHE = 2;
+
+  /**
+   * Metadata loaded from file.
+   */
+  const LOADED_FROM_FILE = 3;
+
+  /**
+   * Gets the URI of the file.
+   *
+   * @return string|null
+   *   The URI of the file, or a local path.
+   */
+  public function getUri();
+
+  /**
+   * Gets the local filesystem URI to the temporary file.
+   *
+   * @return string|null
+   *   The URI, or a local path, of the temporary file.
+   */
+  public function getLocalTempPath();
+
+  /**
+   * Sets the local filesystem URI to the temporary file.
+   *
+   * @param string $temp_uri
+   *   A URI to a temporary file.
+   *
+   * @return $this
+   */
+  public function setLocalTempPath($temp_uri);
+
+  /**
+   * Copies the file at URI to a local temporary file.
+   *
+   * @param string $temp_uri
+   *   (optional) a URI to a temporary file. If NULL, a temp URI will be
+   *   defined by the operation. Defaults to NULL.
+   *
+   * @return bool
+   *   TRUE if the file was copied successfully, FALSE
+   *   otherwise.
+   */
+  public function copyUriToTemp($temp_uri = NULL);
+
+  /**
+   * Copies the local temporary file to the destination URI.
+   *
+   * @return bool
+   *   TRUE if the file was copied successfully, FALSE
+   *   otherwise.
+   */
+  public function copyTempToUri();
+
+  /**
+   * Gets a FileMetadata plugin instance.
+   *
+   * @param string $metadata_id
+   *   The id of the plugin whose instance is to be returned. If it is does
+   *   not exist, an instance is created.
+   *
+   * @return \Drupal\file_mdm\Plugin\FileMetadataPluginInterface|null
+   *   The FileMetadata plugin instance. NULL if no plugin is found.
+   */
+  public function getFileMetadataPlugin($metadata_id);
+
+  /**
+   * Returns a list of supported metadata keys.
+   *
+   * @param string $metadata_id
+   *   The id of the FileMetadata plugin.
+   * @param mixed $options
+   *   (optional) Allows specifying additional options to control the list of
+   *   metadata keys returned.
+   *
+   * @return array
+   *   A simple array of metadata keys supported.
+   */
+  public function getSupportedKeys($metadata_id, $options = NULL);
+
+  /**
+   * Gets a metadata element.
+   *
+   * @param string $metadata_id
+   *   The id of the FileMetadata plugin.
+   * @param mixed|null $key
+   *   A key to determine the metadata element to be returned. If NULL, the
+   *   entire metadata will be returned.
+   *
+   * @return mixed
+   *   The value of the element specified by $key. If $key is NULL, the entire
+   *   metadata.
+   */
+  public function getMetadata($metadata_id, $key = NULL);
+
+  /**
+   * Removes a metadata element.
+   *
+   * @param string $metadata_id
+   *   The id of the FileMetadata plugin.
+   * @param mixed $key
+   *   A key to determine the metadata element to be removed.
+   *
+   * @return bool
+   *   TRUE if metadata was removed successfully, FALSE otherwise.
+   */
+  public function removeMetadata($metadata_id, $key);
+
+  /**
+   * Sets a metadata element.
+   *
+   * @param string $metadata_id
+   *   The id of the FileMetadata plugin.
+   * @param mixed $key
+   *   A key to determine the metadata element to be changed.
+   * @param mixed $value
+   *   The value to change the metadata element to.
+   *
+   * @return bool
+   *   TRUE if metadata was changed successfully, FALSE otherwise.
+   */
+  public function setMetadata($metadata_id, $key, $value);
+
+  /**
+   * Checks if file metadata has been already loaded.
+   *
+   * @param string $metadata_id
+   *   The id of the FileMetadata plugin.
+   *
+   * @return bool
+   *   TRUE if metadata is loaded, FALSE otherwise.
+   */
+  public function isMetadataLoaded($metadata_id);
+
+  /**
+   * Loads file metadata.
+   *
+   * @param string $metadata_id
+   *   The id of the FileMetadata plugin.
+   * @param mixed $metadata
+   *   The file metadata associated to the file at URI.
+   *
+   * @return bool
+   *   TRUE if metadata was loaded successfully, FALSE otherwise.
+   */
+  public function loadMetadata($metadata_id, $metadata);
+
+  /**
+   * Loads file metadata from a cache entry.
+   *
+   * @param string $metadata_id
+   *   The id of the FileMetadata plugin.
+   *
+   * @return bool
+   *   TRUE if metadata was loaded successfully, FALSE otherwise.
+   */
+  public function loadMetadataFromCache($metadata_id);
+
+  /**
+   * Caches metadata for file at URI.
+   *
+   * Uses the 'file_mdm' cache bin.
+   *
+   * @param string $metadata_id
+   *   The id of the FileMetadata plugin.
+   * @param array $tags
+   *   (optional) An array of cache tags to save to cache.
+   *
+   * @return bool
+   *   TRUE if metadata was saved successfully, FALSE otherwise.
+   */
+  public function saveMetadataToCache($metadata_id, array $tags = []);
+
+  /**
+   * Saves metadata to file at URI.
+   *
+   * @param string $metadata_id
+   *   The id of the FileMetadata plugin.
+   *
+   * @return bool
+   *   TRUE if metadata was saved successfully, FALSE otherwise.
+   */
+  public function saveMetadataToFile($metadata_id);
+
+}