Package com.mongodb.client.model.changestream

Class ChangeStreamDocument<TDocument>

  • Type Parameters:
    TDocument - The type that this collection will encode the fullDocument field into.
    public final class ChangeStreamDocument<TDocument>
extends Object
    Represents the $changeStream aggregation output document.

    Note: this class will not be applicable for all change stream outputs. If using custom pipelines that radically change the change stream result, then an alternative document format should be used.

    Since:
    3.6

    • Method Detail

      • getResumeToken

        public BsonDocument getResumeToken()
        Returns the resumeToken
        Returns:
        the resumeToken

      • getNamespace

        @BsonIgnore
@Nullable
public MongoNamespace getNamespace()
        Returns the namespace, derived from the "ns" field in a change stream document. The invalidate operation type does include a MongoNamespace in the ChangeStreamDocument response. The dropDatabase operation type includes a MongoNamespace, but does not include a collection name as part of the namespace.
        Returns:
        the namespace. If the namespaceDocument is null or if it is missing either the 'db' or 'coll' keys, then this will return null.

      • getNamespaceDocument

        @BsonProperty("ns")
@Nullable
public BsonDocument getNamespaceDocument()
        Returns the namespace cocument, derived from the "ns" field in a change stream document. The namespace document is a BsonDocument containing the values associated with a MongoNamespace. The 'db' key refers to the database name and the 'coll' key refers to the collection name.
        Returns:
        the namespaceDocument
        Since:
        3.8

      • getDestinationNamespace

        @BsonIgnore
@Nullable
public MongoNamespace getDestinationNamespace()
        Returns the destination namespace, derived from the "to" field in a change stream document.

        The destination namespace is used to indicate the destination of a collection rename event.

        Returns:
        the namespace. If the "to" document is null or absent, then this will return null.
        Since:
        3.11
        See Also:
        OperationType.RENAME

      • getDestinationNamespaceDocument

        @BsonProperty("to")
@Nullable
public BsonDocument getDestinationNamespaceDocument()
        Returns the destination namespace document, derived from the "to" field in a change stream document.

        The destination namespace document is a BsonDocument containing the values associated with a MongoNamespace. The 'db' key refers to the database name and the 'coll' key refers to the collection name.

        Returns:
        the destinationNamespaceDocument
        Since:
        3.11

      • getDatabaseName

        @BsonIgnore
@Nullable
public String getDatabaseName()
        Returns the database name
        Returns:
        the databaseName. If the namespaceDocument is null or if it is missing the 'db' key, then this will return null.
        Since:
        3.8

      • getFullDocument

        @Nullable
public TDocument getFullDocument()
        Returns the fullDocument
        Returns:
        the fullDocument

      • getDocumentKey

        @Nullable
public BsonDocument getDocumentKey()
        Returns a document containing just the _id of the changed document.

        For unsharded collections this contains a single field, _id, with the value of the _id of the document updated. For sharded collections, this will contain all the components of the shard key in order, followed by the _id if the _id isn’t part of the shard key.

        Returns:
        the document key, or null if the event is not associated with a single document (e.g. a collection rename event)

      • getClusterTime

        @Nullable
public BsonTimestamp getClusterTime()
        Gets the cluster time at which the change occurred.
        Returns:
        the cluster time at which the change occurred
        Since:
        3.8
        Since server release
        4.0

      • getOperationType

        public OperationType getOperationType()
        Returns the operationType
        Returns:
        the operationType

      • getUpdateDescription

        @Nullable
public UpdateDescription getUpdateDescription()
        Returns the updateDescription
        Returns:
        the updateDescription, or null if the event is not associated with a single document (e.g. a collection rename event)

      • getTxnNumber

        @Nullable
public BsonInt64 getTxnNumber()
        Returns the transaction number
        Returns:
        the transaction number, or null if not part of a multi-document transaction
        Since:
        3.11
        Since server release
        4.0

      • getLsid

        @Nullable
public BsonDocument getLsid()
        Returns the identifier for the session associated with the transaction
        Returns:
        the lsid, or null if not part of a multi-document transaction
        Since:
        3.11
        Since server release
        4.0

      • createCodec

        public static <TFullDocument> Codec<ChangeStreamDocument<TFullDocument>> createCodec​(Class<TFullDocument> fullDocumentClass,
                                                                                     CodecRegistry codecRegistry)
        Creates the codec for the specific ChangeStreamOutput type
        Type Parameters:
        TFullDocument - the fullDocument type
        Parameters:
        fullDocumentClass - the class to use to represent the fullDocument
        codecRegistry - the codec registry
        Returns:
        the codec

      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class Object