/**
* 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.support.node;
import org.neo4j.graphdb.*;
import org.neo4j.graphdb.index.IndexManager;
import org.springframework.data.neo4j.support.GraphDatabaseContext;
public abstract class Neo4jHelper {
public static void cleanDb(GraphDatabaseContext graphDatabaseContext) {
cleanDb(graphDatabaseContext.getGraphDatabaseService());
}
public static void cleanDb(GraphDatabaseService graphDatabaseService) {
Transaction tx = graphDatabaseService.beginTx();
try {
removeNodes(graphDatabaseService);
clearIndex(graphDatabaseService);
tx.success();
} finally {
tx.finish();
}
}
private static void removeNodes(GraphDatabaseService graphDatabaseService) {
Node refNode = graphDatabaseService.getReferenceNode();
for (Node node : graphDatabaseService.getAllNodes()) {
for (Relationship rel : node.getRelationships(Direction.OUTGOING)) {
rel.delete();
}
}
for (Node node : graphDatabaseService.getAllNodes()) {
if (!refNode.equals(node)) {
node.delete();
}
}
}
private static void clearIndex(GraphDatabaseService gds) {
IndexManager indexManager = gds.index();
for (String ix : indexManager.nodeIndexNames()) {
indexManager.forNodes(ix).delete();
}
for (String ix : indexManager.relationshipIndexNames()) {
indexManager.forRelationships(ix).delete();
}
}
}