|
| 1 | +ref: watch-option-batchSize |
| 2 | +content: | |
| 3 | + Specifies the batch size for the cursor, which will apply to both the initial |
| 4 | + ``aggregate`` command and any subsequent ``getMore`` commands. This determines |
| 5 | + the maximum number of change events to return in each response from the |
| 6 | + server. |
| 7 | +
|
| 8 | + .. note:: |
| 9 | +
|
| 10 | + Irrespective of the ``batchSize`` option, the initial ``aggregate`` command |
| 11 | + response for a change stream generally does not include any documents |
| 12 | + unless another option is used to configure its starting point (e.g. |
| 13 | + ``startAfter``). |
| 14 | +--- |
| 15 | +ref: watch-option-fullDocument |
| 16 | +content: | |
| 17 | + Determines how the ``fullDocument`` response field will be populated for |
| 18 | + update operations. |
| 19 | +
|
| 20 | + By default, change streams only return the delta of fields (via an |
| 21 | + ``updateDescription`` field) for update operations and ``fullDocument`` is |
| 22 | + omitted. Insert and replace operations always include the ``fullDocument`` |
| 23 | + field. Delete operations omit the field as the document no longer exists. |
| 24 | +
|
| 25 | + Specify "updateLookup" to return the current majority-committed version of the |
| 26 | + updated document. |
| 27 | +
|
| 28 | + MongoDB 6.0+ allows returning the post-image of the modified document if the |
| 29 | + collection has ``changeStreamPreAndPostImages`` enabled. Specify |
| 30 | + "whenAvailable" to return the post-image if available or a null value if not. |
| 31 | + Specify "required" to return the post-image if available or raise an error if |
| 32 | + not. |
| 33 | +
|
| 34 | + The following values are supported: |
| 35 | +
|
| 36 | + - ``MongoDB\Operation\Watch::FULL_DOCUMENT_UPDATE_LOOKUP`` |
| 37 | + - ``MongoDB\Operation\Watch::FULL_DOCUMENT_WHEN_AVAILABLE`` |
| 38 | + - ``MongoDB\Operation\Watch::FULL_DOCUMENT_REQUIRED`` |
| 39 | +
|
| 40 | + .. note:: |
| 41 | +
|
| 42 | + This is an option of the ``$changeStream`` pipeline stage. |
| 43 | +--- |
| 44 | +ref: watch-option-fullDocumentBeforeChange |
| 45 | +content: | |
| 46 | + Determines how the ``fullDocumentBeforeChange`` response field will be |
| 47 | + populated. By default, the field is omitted. |
| 48 | +
|
| 49 | + MongoDB 6.0+ allows returning the pre-image of the modified document if the |
| 50 | + collection has ``changeStreamPreAndPostImages`` enabled. Specify |
| 51 | + "whenAvailable" to return the pre-image if available or a null value if not. |
| 52 | + Specify "required" to return the pre-image if available or raise an error if |
| 53 | + not. |
| 54 | +
|
| 55 | + The following values are supported: |
| 56 | +
|
| 57 | + - ``MongoDB\Operation\Watch::FULL_DOCUMENT_BEFORE_CHANGE_WHEN_AVAILABLE`` |
| 58 | + - ``MongoDB\Operation\Watch::FULL_DOCUMENT_BEFORE_CHANGE_REQUIRED`` |
| 59 | +
|
| 60 | + .. note:: |
| 61 | +
|
| 62 | + This is an option of the ``$changeStream`` pipeline stage. |
| 63 | +
|
| 64 | + .. versionadded: 1.13 |
| 65 | +--- |
| 66 | +ref: watch-option-maxAwaitTimeMS |
| 67 | +content: | |
| 68 | + Positive integer denoting the time limit in milliseconds for the server to |
| 69 | + block a getMore operation if no data is available. |
| 70 | +--- |
| 71 | +ref: watch-option-resumeAfter |
| 72 | +content: | |
| 73 | + Specifies the logical starting point for the new change stream. The ``_id`` |
| 74 | + field in documents returned by the change stream may be used here. |
| 75 | +
|
| 76 | + Using this option in conjunction with ``startAfter`` and/or |
| 77 | + ``startAtOperationTime`` will result in a server error. The options are |
| 78 | + mutually exclusive. |
| 79 | +
|
| 80 | + .. note:: |
| 81 | +
|
| 82 | + This is an option of the ``$changeStream`` pipeline stage. |
| 83 | +--- |
| 84 | +ref: watch-option-showExpandedEvents |
| 85 | +content: | |
| 86 | + If true, instructs the server to include additional DDL events in the change |
| 87 | + stream. The additional events that may be included are: |
| 88 | +
|
| 89 | + - ``createIndexes`` |
| 90 | + - ``dropIndexes`` |
| 91 | + - ``modify`` |
| 92 | + - ``create`` |
| 93 | + - ``shardCollection`` |
| 94 | + - ``reshardCollection`` (server 6.1+) |
| 95 | + - ``refineCollectionShardKey`` (server 6.1+) |
| 96 | +
|
| 97 | + This is not supported for server versions prior to 6.0 and will result in an |
| 98 | + exception at execution time if used. |
| 99 | +
|
| 100 | + .. note:: |
| 101 | +
|
| 102 | + This is an option of the ``$changeStream`` pipeline stage. |
| 103 | +
|
| 104 | + .. versionadded:: 1.13 |
| 105 | +--- |
| 106 | +ref: watch-option-startAfter |
| 107 | +content: | |
| 108 | + Specifies the logical starting point for the new change stream. The ``_id`` |
| 109 | + field in documents returned by the change stream may be used here. Unlike |
| 110 | + ``resumeAfter``, this option can be used with a resume token from an |
| 111 | + "invalidate" event. |
| 112 | +
|
| 113 | + Using this option in conjunction with ``resumeAfter`` and/or |
| 114 | + ``startAtOperationTime`` will result in a server error. The options are |
| 115 | + mutually exclusive. |
| 116 | +
|
| 117 | + This is not supported for server versions prior to 4.2 and will result in an |
| 118 | + exception at execution time if used. |
| 119 | +
|
| 120 | + .. note:: |
| 121 | +
|
| 122 | + This is an option of the ``$changeStream`` pipeline stage. |
| 123 | +
|
| 124 | + .. versionadded: 1.5 |
| 125 | +--- |
| 126 | +ref: watch-option-startAtOperationTime |
| 127 | +content: | |
| 128 | + If specified, the change stream will only provide changes that occurred at or |
| 129 | + after the specified timestamp. Command responses from a MongoDB 4.0+ server |
| 130 | + include an ``operationTime`` that can be used here. By default, the |
| 131 | + ``operationTime`` returned by the initial ``aggregate`` command will be used |
| 132 | + if available. |
| 133 | +
|
| 134 | + Using this option in conjunction with ``resumeAfter`` and/or ``startAfter`` |
| 135 | + will result in a server error. The options are mutually exclusive. |
| 136 | +
|
| 137 | + This is not supported for server versions prior to 4.0 and will result in an |
| 138 | + exception at execution time if used. |
| 139 | +
|
| 140 | + .. note:: |
| 141 | +
|
| 142 | + This is an option of the ``$changeStream`` pipeline stage. |
| 143 | +... |
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