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53 lines
1.7 KiB
53 lines
1.7 KiB
// Copyright (C) MongoDB, Inc. 2022-present.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License. You may obtain
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// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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package mongo
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import (
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"context"
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"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
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"go.mongodb.org/mongo-driver/x/mongo/driver"
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)
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// batchCursor is the interface implemented by types that can provide batches of document results.
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// The Cursor type is built on top of this type.
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type batchCursor interface {
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// ID returns the ID of the cursor.
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ID() int64
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// Next returns true if there is a batch available.
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Next(context.Context) bool
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// Batch will return a DocumentSequence for the current batch of documents. The returned
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// DocumentSequence is only valid until the next call to Next or Close.
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Batch() *bsoncore.DocumentSequence
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// Server returns a pointer to the cursor's server.
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Server() driver.Server
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// Err returns the last error encountered.
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Err() error
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// Close closes the cursor.
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Close(context.Context) error
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// The SetBatchSize method is a modifier function used to adjust the
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// batch size of the cursor that implements it.
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SetBatchSize(int32)
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}
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// changeStreamCursor is the interface implemented by batch cursors that also provide the functionality for retrieving
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// a postBatchResumeToken from commands and allows for the cursor to be killed rather than closed
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type changeStreamCursor interface {
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batchCursor
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// PostBatchResumeToken returns the latest seen post batch resume token.
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PostBatchResumeToken() bsoncore.Document
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// KillCursor kills cursor on server without closing batch cursor
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KillCursor(context.Context) error
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}
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