## EBookBackendCache

EBookBackendCache

## Synopsis

                        EBookBackendCache;
    EBookBackendCache*  e_book_backend_cache_new            (const char *uri);
    EContact*           e_book_backend_cache_get_contact    (EBookBackendCache *cache,
                                                             const char *uid);
    gboolean            e_book_backend_cache_add_contact    (EBookBackendCache *cache,
                                                             EContact *contact);
    gboolean            e_book_backend_cache_remove_contact (EBookBackendCache *cache,
                                                             const char *uid);
    gboolean            e_book_backend_cache_check_contact  (EBookBackendCache *cache,
                                                             const char *uid);
    GList*              e_book_backend_cache_get_contacts   (EBookBackendCache *cache,
                                                             const char *query);
    gboolean            e_book_backend_cache_exists         (const char *uri);
    void                e_book_backend_cache_set_populated  (EBookBackendCache *cache);
    gboolean            e_book_backend_cache_is_populated   (EBookBackendCache *cache);
    void                e_book_backend_cache_set_time       (EBookBackendCache *cache,
                                                             const char *t);
    char*               e_book_backend_cache_get_time       (EBookBackendCache *cache);
    GPtrArray*          e_book_backend_cache_search         (EBookBackendCache *cache,
                                                             const char *query);

## Object Hierarchy

      GObject
       +----EFileCache
             +----EBookBackendCache

## Properties

      "uri"                      gchar*                : Read / Write / Construct Only

## Description

## Details

### EBookBackendCache

    typedef struct _EBookBackendCache EBookBackendCache;

### e_book_backend_cache_new ()

    EBookBackendCache*  e_book_backend_cache_new            (const char *uri);

Creates a new EBookBackendCache object, which implements a local cache of EContact objects, useful for remote backends.

`uri` : | URI of the backend to be cached.
Returns : | A new EBookBackendCache.

### e_book_backend_cache_get_contact ()

    EContact*           e_book_backend_cache_get_contact    (EBookBackendCache *cache,
                                                             const char *uid);

Get a cached contact. Note that the returned EContact will be newly created, and must be unreffed by the caller when no longer needed.

`cache` : | an EBookBackendCache
`uid` : | a unique contact ID
Returns : | A cached EContact, or `NULL` if `uid` is not cached.

### e_book_backend_cache_add_contact ()

    gboolean            e_book_backend_cache_add_contact    (EBookBackendCache *cache,
                                                             EContact *contact);

Adds `contact` to `cache`.

`cache` : | an EBookBackendCache
`contact` : | an EContact
Returns : | `TRUE` if the contact was cached successfully, `FALSE` otherwise.

### e_book_backend_cache_remove_contact ()

    gboolean            e_book_backend_cache_remove_contact (EBookBackendCache *cache,
                                                             const char *uid);

Removes the contact identified by `uid` from `cache`.

`cache` : | an EBookBackendCache
`uid` : | a unique contact ID
Returns : | `TRUE` if the contact was found and removed, `FALSE` otherwise.

### e_book_backend_cache_check_contact ()

    gboolean            e_book_backend_cache_check_contact  (EBookBackendCache *cache,
                                                             const char *uid);

Checks if the contact identified by `uid` exists in `cache`.

`cache` : | an EBookBackendCache
`uid` : | a unique contact ID
Returns : | `TRUE` if the cache contains the contact, `FALSE` otherwise.

### e_book_backend_cache_get_contacts ()

    GList*              e_book_backend_cache_get_contacts   (EBookBackendCache *cache,
                                                             const char *query);

Returns a list of EContact elements from `cache` matching `query`. When done with the list, the caller must unref the contacts and free the list.

`cache` : | an EBookBackendCache
`query` : | an s-expression
Returns : | A GList of pointers to EContact.

### e_book_backend_cache_exists ()

    gboolean            e_book_backend_cache_exists         (const char *uri);

Checks if an EBookBackendCache exists at `uri`.

`uri` : | URI for the cache
Returns : | `TRUE` if cache exists, `FALSE` if not.

### e_book_backend_cache_set_populated ()

    void                e_book_backend_cache_set_populated  (EBookBackendCache *cache);

Flags `cache` as being populated - that is, it is up-to-date on the contents of the book it's caching.

`cache` : | an EBookBackendCache

### e_book_backend_cache_is_populated ()

    gboolean            e_book_backend_cache_is_populated   (EBookBackendCache *cache);

Checks if `cache` is populated.

`cache` : |
Returns : | `TRUE` if `cache` is populated, `FALSE` otherwise.

### e_book_backend_cache_set_time ()

    void                e_book_backend_cache_set_time       (EBookBackendCache *cache,
                                                             const char *t);

`cache` : |
`t` : |

### e_book_backend_cache_get_time ()

    char*               e_book_backend_cache_get_time       (EBookBackendCache *cache);

`cache` : |
Returns : |

### e_book_backend_cache_search ()

    GPtrArray*          e_book_backend_cache_search         (EBookBackendCache *cache,
                                                             const char *query);

Returns an array of pointers to unique contact ID strings for contacts in `cache` matching `query`. When done with the array, the caller must free the ID strings and the array.

`cache` : | an EBookBackendCache
`query` : | an s-expression
Returns : | A GPtrArray of pointers to contact ID strings.

## Property Details

### The `"uri"` property

      "uri"                      gchar*                : Read / Write / Construct Only

Default value: ""