com.mongodb.client.gridfs.GridFSBucket Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of mongo-java-driver Show documentation
Show all versions of mongo-java-driver Show documentation
The MongoDB Java Driver uber-artifact, containing mongodb-driver, mongodb-driver-core, and bson
The newest version!
/*
* Copyright 2015 MongoDB, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.mongodb.client.gridfs;
import com.mongodb.ReadPreference;
import com.mongodb.WriteConcern;
import com.mongodb.annotations.ThreadSafe;
import com.mongodb.client.gridfs.model.GridFSDownloadByNameOptions;
import com.mongodb.client.gridfs.model.GridFSUploadOptions;
import org.bson.BsonValue;
import org.bson.conversions.Bson;
import org.bson.types.ObjectId;
import java.io.InputStream;
import java.io.OutputStream;
/**
* Represents a GridFS Bucket
*
* @since 3.1
*/
@ThreadSafe
public interface GridFSBucket {
/**
* The bucket name.
*
* @return the bucket name
*/
String getBucketName();
/**
* Sets the chunk size in bytes. Defaults to 255.
*
* @return the chunk size in bytes.
*/
int getChunkSizeBytes();
/**
* Get the write concern for the GridFSBucket.
*
* @return the {@link com.mongodb.WriteConcern}
*/
WriteConcern getWriteConcern();
/**
* Get the read preference for the GridFSBucket.
*
* @return the {@link com.mongodb.ReadPreference}
*/
ReadPreference getReadPreference();
/**
* Create a new GridFSBucket instance with a new chunk size in bytes.
*
* @param chunkSizeBytes the new chunk size in bytes.
* @return a new GridFSBucket instance with the different chunk size in bytes
*/
GridFSBucket withChunkSizeBytes(int chunkSizeBytes);
/**
* Create a new GridFSBucket instance with a different read preference.
*
* @param readPreference the new {@link ReadPreference} for the database
* @return a new GridFSBucket instance with the different readPreference
*/
GridFSBucket withReadPreference(ReadPreference readPreference);
/**
* Create a new GridFSBucket instance with a different write concern.
*
* @param writeConcern the new {@link WriteConcern} for the database
* @return a new GridFSBucket instance with the different writeConcern
*/
GridFSBucket withWriteConcern(WriteConcern writeConcern);
/**
* Opens a Stream that the application can write the contents of the file to.
*
* As the application writes the contents to the returned Stream, the contents are uploaded as chunks in the chunks collection. When
* the application signals it is done writing the contents of the file by calling close on the returned Stream, a files collection
* document is created in the files collection.
*
*
* @param filename the filename for the stream
* @return the GridFSUploadStream that provides the ObjectId for the file to be uploaded and the Stream to which the
* application will write the contents.
*/
GridFSUploadStream openUploadStream(String filename);
/**
* Opens a Stream that the application can write the contents of the file to.
*
* As the application writes the contents to the returned Stream, the contents are uploaded as chunks in the chunks collection. When
* the application signals it is done writing the contents of the file by calling close on the returned Stream, a files collection
* document is created in the files collection.
*
* @param filename the filename for the stream
* @param options the GridFSUploadOptions
* @return the GridFSUploadStream that provides the ObjectId for the file to be uploaded and the Stream to which the
* application will write the contents.
*/
GridFSUploadStream openUploadStream(String filename, GridFSUploadOptions options);
/**
* Uploads a user file to a GridFS bucket.
*
* Reads the contents of the user file from the {@code Stream} and uploads it as chunks in the chunks collection. After all the
* chunks have been uploaded, it creates a files collection document for {@code filename} in the files collection.
*
*
* @param filename the filename for the stream
* @param source the Stream providing the file data
* @return the ObjectId of the uploaded file.
*/
ObjectId uploadFromStream(String filename, InputStream source);
/**
* Uploads a user file to a GridFS bucket.
*
* Reads the contents of the user file from the {@code Stream} and uploads it as chunks in the chunks collection. After all the
* chunks have been uploaded, it creates a files collection document for {@code filename} in the files collection.
*
*
* @param filename the filename for the stream
* @param source the Stream providing the file data
* @param options the GridFSUploadOptions
* @return the ObjectId of the uploaded file.
*/
ObjectId uploadFromStream(String filename, InputStream source, GridFSUploadOptions options);
/**
* Opens a Stream from which the application can read the contents of the stored file specified by {@code id}.
*
* @param id the ObjectId of the file to be put into a stream.
* @return the stream
*/
GridFSDownloadStream openDownloadStream(ObjectId id);
/**
* Downloads the contents of the stored file specified by {@code id} and writes the contents to the {@code destination} Stream.
*
* @param id the ObjectId of the file to be written to the destination stream
* @param destination the destination stream
*/
void downloadToStream(ObjectId id, OutputStream destination);
/**
* Opens a Stream from which the application can read the contents of the stored file specified by {@code id}.
*
* @param id the custom id value of the file, to be put into a stream.
* @return the stream
* @deprecated using custom id values for with GridFS is no longer supported
*/
@Deprecated
GridFSDownloadStream openDownloadStream(BsonValue id);
/**
* Downloads the contents of the stored file specified by {@code id} and writes the contents to the {@code destination} Stream.
*
* @param id the custom id of the file, to be written to the destination stream
* @param destination the destination stream
* @deprecated using custom id values for with GridFS is no longer supported
*/
@Deprecated
void downloadToStream(BsonValue id, OutputStream destination);
/**
* Opens a Stream from which the application can read the contents of the latest version of the stored file specified by the
* {@code filename}.
*
* @param filename the name of the file to be downloaded
* @return the stream
*/
GridFSDownloadStream openDownloadStreamByName(String filename);
/**
* Opens a Stream from which the application can read the contents of the stored file specified by {@code filename} and the revision
* in {@code options}.
*
* @param filename the name of the file to be downloaded
* @param options the download options
* @return the stream
*/
GridFSDownloadStream openDownloadStreamByName(String filename, GridFSDownloadByNameOptions options);
/**
* Downloads the contents of the latest version of the stored file specified by {@code filename} and writes the contents to
* the {@code destination} Stream.
*
* @param filename the name of the file to be downloaded
* @param destination the destination stream
*/
void downloadToStreamByName(String filename, OutputStream destination);
/**
* Downloads the contents of the stored file specified by {@code filename} and by the revision in {@code options} and writes the
* contents to the {@code destination} Stream.
*
* @param filename the name of the file to be downloaded
* @param destination the destination stream
* @param options the download options
*/
void downloadToStreamByName(String filename, OutputStream destination, GridFSDownloadByNameOptions options);
/**
* Finds all documents in the files collection.
*
* @return the GridFS find iterable interface
* @mongodb.driver.manual tutorial/query-documents/ Find
*/
GridFSFindIterable find();
/**
* Finds all documents in the collection that match the filter.
*
*
* Below is an example of filtering against the filename and some nested metadata that can also be stored along with the file data:
*
* {@code
* Filters.and(Filters.eq("filename", "mongodb.png"), Filters.eq("metadata.contentType", "image/png"));
* }
*
*
* @param filter the query filter
* @return the GridFS find iterable interface
* @see com.mongodb.client.model.Filters
*/
GridFSFindIterable find(Bson filter);
/**
* Given a {@code id}, delete this stored file's files collection document and associated chunks from a GridFS bucket.
* @param id the ObjectId of the file to be deleted
*/
void delete(ObjectId id);
/**
* Renames the stored file with the specified {@code id}.
*
* @param id the id of the file in the files collection to rename
* @param newFilename the new filename for the file
*/
void rename(ObjectId id, String newFilename);
/**
* Drops the data associated with this bucket from the database.
*/
void drop();
}