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89 lines
2.9 KiB
PHP
89 lines
2.9 KiB
PHP
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<?php
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namespace Sabre\DAV\Sync;
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use Sabre\DAV;
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/**
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* If a class extends ISyncCollection, it supports WebDAV-sync.
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*
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* You are responsible for maintaining a changelist for this collection. This
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* means that if any child nodes in this collection was created, modified or
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* deleted in any way, you should maintain an updated changelist.
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*
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* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
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* @author Evert Pot (http://evertpot.com/)
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* @license http://sabre.io/license/ Modified BSD License
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*/
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interface ISyncCollection extends DAV\ICollection {
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/**
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* This method returns the current sync-token for this collection.
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* This can be any string.
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*
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* If null is returned from this function, the plugin assumes there's no
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* sync information available.
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*
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* @return string|null
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*/
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function getSyncToken();
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/**
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* The getChanges method returns all the changes that have happened, since
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* the specified syncToken and the current collection.
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*
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* This function should return an array, such as the following:
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*
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* [
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* 'syncToken' => 'The current synctoken',
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* 'added' => [
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* 'new.txt',
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* ],
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* 'modified' => [
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* 'modified.txt',
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* ],
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* 'deleted' => array(
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* 'foo.php.bak',
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* 'old.txt'
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* )
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* ];
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*
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* The syncToken property should reflect the *current* syncToken of the
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* collection, as reported getSyncToken(). This is needed here too, to
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* ensure the operation is atomic.
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*
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* If the syncToken is specified as null, this is an initial sync, and all
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* members should be reported.
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*
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* The modified property is an array of nodenames that have changed since
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* the last token.
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*
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* The deleted property is an array with nodenames, that have been deleted
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* from collection.
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*
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* The second argument is basically the 'depth' of the report. If it's 1,
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* you only have to report changes that happened only directly in immediate
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* descendants. If it's 2, it should also include changes from the nodes
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* below the child collections. (grandchildren)
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*
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* The third (optional) argument allows a client to specify how many
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* results should be returned at most. If the limit is not specified, it
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* should be treated as infinite.
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*
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* If the limit (infinite or not) is higher than you're willing to return,
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* you should throw a Sabre\DAV\Exception\TooMuchMatches() exception.
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*
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* If the syncToken is expired (due to data cleanup) or unknown, you must
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* return null.
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*
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* The limit is 'suggestive'. You are free to ignore it.
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*
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* @param string $syncToken
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* @param int $syncLevel
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* @param int $limit
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* @return array
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*/
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function getChanges($syncToken, $syncLevel, $limit = null);
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}
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