/**
* Copyright 2011 the original author or authors.
*
* 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 org.springframework.data.neo4j.rest.support;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Node;
import org.neo4j.helpers.collection.IterableWrapper;
import org.neo4j.server.plugins.*;
import org.springframework.context.ApplicationContext;
import org.springframework.data.neo4j.Friendship;
import org.springframework.data.neo4j.*;
import org.springframework.data.neo4j.Person;
import org.springframework.data.neo4j.PersonRepository;
import org.springframework.data.neo4j.server.ProvidedClassPathXmlApplicationContext;
import org.springframework.data.neo4j.support.GraphDatabaseContext;
/**
* @author mh
* @since 14.04.11
*/
@Description("A test plugin for spring data graph usage")
public class TestServerPlugin extends ServerPlugin {
private ApplicationContext ctx;
private PersonRepository personRepository;
private GraphDatabaseContext graphDatabaseContext;
public TestServerPlugin() {
System.out.println("Initializing ServerPlugin");
}
@Name( "person")
@PluginTarget(GraphDatabaseService.class)
public Node person(@Source GraphDatabaseService graphDb, @Parameter(name="name") String name) {
context(graphDb);
final Person result = personRepository.findByPropertyValue(Person.NAME_INDEX, "name",name);
return result!=null ? result.getPersistentState() : null;
}
private synchronized ApplicationContext context(GraphDatabaseService graphDb) {
if (ctx==null) {
ctx = new ProvidedClassPathXmlApplicationContext(graphDb, "Plugin-context.xml");
personRepository = ctx.getBean(PersonRepository.class);
graphDatabaseContext = ctx.getBean(GraphDatabaseContext.class);
}
return ctx;
}
@Name( "get_all_friends" )
@Description("gets all friends of the given node")
@PluginTarget(Node.class)
public Iterable<Node> allFriendsOf(@Source Node target) {
context(target.getGraphDatabase());
final Person person = graphDatabaseContext.createEntityFromState(target, Person.class);
return new IterableWrapper<Node, Friendship>(person.getFriendships()) {
@Override
protected Node underlyingObjectToObject(Friendship friendship) {
return friendship.getPerson2().getPersistentState();
}
};
}
}