org.gecko.emf.mongo.handlers

Class MongoDatabaseURIHandlerImpl

java.lang.Object

URIHandlerImpl

org.gecko.emf.mongo.handlers.MongoDatabaseURIHandlerImpl

public class MongoDatabaseURIHandlerImpl
extends URIHandlerImpl

This EMF URI handler interfaces to MongoDB. This URI handler can handle URIs with the "mongodb" scheme. The URI path must have exactly 3 segments and be of the form /database/collection/{id} where id is optional the first time the EMF object is saved. When building queries, do not specify an id, but make sure path has 3 segments by placing a "/" after the collection. Note that if the id is not specified when the object is first saved, MongoDB will assign the id and the URI of the EMF Resource will be modified to include the id in the URI. Examples of valid URIs: mongodb://localhost/data/people/ mongodb://localhost/data/people/4d0a3e259095b5b334a59df0 This class is intended to be used with the IResourceSetFactory service. If you are not using the factory service, you will have to supply instances of IMongoLocator, IIntputStreamFActory, and IOutputStreamFactory.

Constructor Summary

Constructors

Constructor and Description
MongoDatabaseURIHandlerImpl(MongoDatabaseProvider mongoDatabaseProvider, InputStreamFactory inputStreamFactory, OutputStreamFactory outputStreamFactory)

Method Summary

Modifier and Type	Method and Description
boolean	canHandle(URI uri)
java.io.InputStream	createInputStream(URI uri, java.util.Map<?,?> options)
java.io.OutputStream	createOutputStream(URI uri, java.util.Map<?,?> options)
void	delete(URI uri, java.util.Map<?,?> options)
boolean	exists(URI uri, java.util.Map<?,?> options)
java.lang.String	getDatabaseURI() Return the database uri
protected <any>	getMongoCollection(MongoDatabase database, URI uri, java.util.Map<?,?> options) Returns the MongoCollection.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MongoDatabaseURIHandlerImpl

public MongoDatabaseURIHandlerImpl(MongoDatabaseProvider mongoDatabaseProvider,
                                   InputStreamFactory inputStreamFactory,
                                   OutputStreamFactory outputStreamFactory)

Parameters:

databaseLocator - an instance of the mongo locator service

inputStreamFactory - an instance of the input stream factory service

outputStreamFactory - an instance of the output stream factory service

Method Detail

canHandle

public boolean canHandle(URI uri)

createOutputStream

public java.io.OutputStream createOutputStream(URI uri,
                                               java.util.Map<?,?> options)
                                        throws java.io.IOException

Throws:

java.io.IOException

createInputStream

public java.io.InputStream createInputStream(URI uri,
                                             java.util.Map<?,?> options)
                                      throws java.io.IOException

Throws:

java.io.IOException

delete

public void delete(URI uri,
                   java.util.Map<?,?> options)
            throws java.io.IOException

Throws:

java.io.IOException

exists

public boolean exists(URI uri,
                      java.util.Map<?,?> options)

getDatabaseURI

public java.lang.String getDatabaseURI()

Return the database uri

Returns:

the database uri

getMongoCollection

protected <any> getMongoCollection(MongoDatabase database,
                                   URI uri,
                                   java.util.Map<?,?> options)

Returns the MongoCollection. Clients may extend this. The default extracts the collection name from the URI and appends the value from the Options#OPTIONS_COLLECTION_PARTITION_EXTENSION, if it set

Parameters:

database - The MongoDatabase

uri - the resource URI

options - the options map

Returns:

the MongoCollection