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GetAll.java
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GetAll.java
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/*
* Licensed to Neo Technology under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Neo Technology licenses this file to you 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.neo4j.examples.server.plugins;
import java.util.ArrayList;
import java.util.List;
import org.neo4j.graphdb.GraphDatabaseService;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.Relationship;
import org.neo4j.graphdb.Transaction;
import org.neo4j.server.plugins.Description;
import org.neo4j.server.plugins.Name;
import org.neo4j.server.plugins.PluginTarget;
import org.neo4j.server.plugins.ServerPlugin;
import org.neo4j.server.plugins.Source;
import org.neo4j.tooling.GlobalGraphOperations;
// START SNIPPET: GetAll
@Description( "An extension to the Neo4j Server for getting all nodes or relationships" )
public class GetAll extends ServerPlugin
{
@Name( "get_all_nodes" )
@Description( "Get all nodes from the Neo4j graph database" )
@PluginTarget( GraphDatabaseService.class )
public Iterable<Node> getAllNodes( @Source GraphDatabaseService graphDb )
{
ArrayList<Node> nodes = new ArrayList<>();
try (Transaction tx = graphDb.beginTx())
{
for ( Node node : graphDb.getAllNodes() )
{
nodes.add( node );
}
tx.success();
}
return nodes;
}
@Description( "Get all relationships from the Neo4j graph database" )
@PluginTarget( GraphDatabaseService.class )
public Iterable<Relationship> getAllRelationships( @Source GraphDatabaseService graphDb )
{
List<Relationship> rels = new ArrayList<>();
try (Transaction tx = graphDb.beginTx())
{
for ( Relationship rel : graphDb.getAllRelationships() )
{
rels.add( rel );
}
tx.success();
}
return rels;
}
}
// END SNIPPET: GetAll