Interface GridFsOperations

All Superinterfaces:

ResourceLoader, ResourcePatternResolver

All Known Implementing Classes:

GridFsTemplate

public interface GridFsOperations
extends ResourcePatternResolver

Collection of operations to store and read files from MongoDB GridFS.

Author:

Oliver Gierke, Philipp Schneider, Thomas Darimont, Martin Baumgartner, Christoph Strobl, Hartmut Lang

Field Summary

Fields inherited from interface ResourceLoader

CLASSPATH_URL_PREFIX

Fields inherited from interface ResourcePatternResolver

CLASSPATH_ALL_URL_PREFIX

Method Summary

Modifier and Type	Method	Description
void	delete(Query query)	Deletes all files matching the given Query.
GridFSFindIterable	find(Query query)	Returns all files matching the given query.
@Nullable GridFSFile	findOne(Query query)	Returns a single GridFSFile matching the given query or null in case no file matches.
GridFsResource	getResource(GridFSFile file)	Returns the GridFsResource for a GridFSFile.
GridFsResource	getResource(String filename)	Returns the GridFsResource with the given file name.
GridFsResource[]	getResources(String filenamePattern)	Returns all GridFsResources matching the given file name pattern.
default ObjectId	store(InputStream content, @Nullable Object metadata)	Stores the given content into a file with the given name.
default ObjectId	store(InputStream content, @Nullable String filename, @Nullable Object metadata)	Stores the given content into a file with the given name using the given metadata.
default ObjectId	store(InputStream content, @Nullable String filename, @Nullable String contentType)	Stores the given content into a file with the given name and content type.
ObjectId	store(InputStream content, @Nullable String filename, @Nullable String contentType, @Nullable Object metadata)	Stores the given content into a file with the given name and content type using the given metadata.
default ObjectId	store(InputStream content, @Nullable String filename, @Nullable String contentType, @Nullable Document metadata)	Stores the given content into a file with the given name and content type using the given metadata.
default ObjectId	store(InputStream content, @Nullable String filename, @Nullable Document metadata)	Stores the given content into a file with the given name using the given metadata.
default ObjectId	store(InputStream content, String filename)	Stores the given content into a file with the given name.
default ObjectId	store(InputStream content, @Nullable Document metadata)	Stores the given content into a file with the given name.
<T> T	store(GridFsObject<T, InputStream> upload)	Stores the given GridFsObject, likely a GridFsUpload, into into a file with given name.

Methods inherited from interface ResourceLoader

getClassLoader

Method Details

store

default ObjectId store(InputStream content,
 String filename)

Stores the given content into a file with the given name.

Parameters:

content - must not be null.

filename - must not be null or empty.

Returns:

the ObjectId of the GridFSFile just created.

store

default ObjectId store(InputStream content,
 @Nullable Object metadata)

Stores the given content into a file with the given name.

Parameters:

content - must not be null.

metadata - can be null.

Returns:

the ObjectId of the GridFSFile just created.

store

default ObjectId store(InputStream content,
 @Nullable Document metadata)

Stores the given content into a file with the given name.

Parameters:

content - must not be null.

metadata - can be null.

Returns:

the ObjectId of the GridFSFile just created.

store

default ObjectId store(InputStream content,
 @Nullable String filename,
 @Nullable String contentType)

Stores the given content into a file with the given name and content type.

Parameters:

content - must not be null.

filename - must not be null or empty.

contentType - can be null.

Returns:

the ObjectId of the GridFSFile just created.

store

default ObjectId store(InputStream content,
 @Nullable String filename,
 @Nullable Object metadata)

Stores the given content into a file with the given name using the given metadata. The metadata object will be marshalled before writing.

Parameters:

content - must not be null.

filename - can be null or empty.

metadata - can be null.

Returns:

the ObjectId of the GridFSFile just created.

store

ObjectId store(InputStream content,
 @Nullable String filename,
 @Nullable String contentType,
 @Nullable Object metadata)

Stores the given content into a file with the given name and content type using the given metadata. The metadata object will be marshalled before writing.

Parameters:

content - must not be null.

filename - must not be null or empty.

contentType - can be null.

metadata - can be null

Returns:

the ObjectId of the GridFSFile just created.

store

default ObjectId store(InputStream content,
 @Nullable String filename,
 @Nullable Document metadata)

Stores the given content into a file with the given name using the given metadata.

Parameters:

content - must not be null.

filename - must not be null or empty.

metadata - can be null.

Returns:

the ObjectId of the GridFSFile just created.

store

default ObjectId store(InputStream content,
 @Nullable String filename,
 @Nullable String contentType,
 @Nullable Document metadata)

Stores the given content into a file with the given name and content type using the given metadata.

Parameters:

content - must not be null.

filename - must not be null or empty.

contentType - can be null. If not empty, may override content type within metadata.

metadata - can be null.

Returns:

the ObjectId of the GridFSFile just created.

store

<T> T store(GridFsObject<T, InputStream> upload)

Stores the given GridFsObject, likely a GridFsUpload, into into a file with given name. If the GridFsObject.getFileId() is set, the file will be stored with that id, otherwise the server auto creates a new id.

Type Parameters:

T - id type of the underlying GridFSFile

Parameters:

upload - the GridFsObject (most likely a GridFsUpload) to be stored.

Returns:

the id of the stored file. Either an auto created value or GridFsObject.getFileId(), but never null.

Since:

3.0

find

GridFSFindIterable find(Query query)

Returns all files matching the given query. Note, that currently Sort criterias defined at the Query will not be regarded as MongoDB does not support ordering for GridFS file access.

Parameters:

query - must not be null.

Returns:

GridFSFindIterable to obtain results from. Eg. by calling MongoIterable.into(java.util.Collection).

See Also:

• MongoDB Jira: JAVA-431

findOne

@Nullable GridFSFile findOne(Query query)

Returns a single GridFSFile matching the given query or null in case no file matches.

Parameters:

query - must not be null.

Returns:

can be null.

delete

void delete(Query query)

Deletes all files matching the given Query.

Parameters:

query - must not be null.

getResource

GridFsResource getResource(String filename)

Returns the GridFsResource with the given file name.

Specified by:

getResource in interface ResourceLoader

Parameters:

filename - must not be null.

Returns:

the resource. Use Resource.exists() to check if the returned GridFsResource is actually present.

See Also:

• ResourceLoader.getResource(String)

getResource

GridFsResource getResource(GridFSFile file)

Returns the GridFsResource for a GridFSFile.

Parameters:

file - must not be null.

Returns:

the resource for the file.

Since:

2.1

getResources

GridFsResource[] getResources(String filenamePattern)

Returns all GridFsResources matching the given file name pattern.

Specified by:

getResources in interface ResourcePatternResolver

Parameters:

filenamePattern - must not be null.

Returns:

an empty array if none found.

See Also:

• ResourcePatternResolver.getResources(String)