| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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.apache.tinkerpop.gremlin.process.traversal.step.util.event; |
| |
| import org.apache.tinkerpop.gremlin.structure.Edge; |
| import org.apache.tinkerpop.gremlin.structure.Graph; |
| import org.apache.tinkerpop.gremlin.structure.Property; |
| import org.apache.tinkerpop.gremlin.structure.Vertex; |
| import org.apache.tinkerpop.gremlin.structure.VertexProperty; |
| |
| /** |
| * An example listener that writes a message to the console for each event that fires from the graph. |
| * |
| * @author Stephen Mallette (http://stephen.genoprime.com) |
| */ |
| public class ConsoleMutationListener implements MutationListener { |
| |
| private final Graph graph; |
| |
| public ConsoleMutationListener(final Graph graph) { |
| this.graph = graph; |
| } |
| |
| @Override |
| public void vertexAdded(final Vertex vertex) { |
| System.out.println("Vertex [" + vertex.toString() + "] added to graph [" + graph.toString() + "]"); |
| } |
| |
| @Override |
| public void vertexRemoved(final Vertex vertex) { |
| System.out.println("Vertex [" + vertex.toString() + "] removed from graph [" + graph.toString() + "]"); |
| } |
| |
| @Override |
| public void vertexPropertyRemoved(final VertexProperty vertexProperty) { |
| System.out.println("Vertex Property [" + vertexProperty.toString() + "] removed from graph [" + graph.toString() + "]"); |
| } |
| |
| @Override |
| public void edgeAdded(final Edge edge) { |
| System.out.println("Edge [" + edge.toString() + "] added to graph [" + graph.toString() + "]"); |
| } |
| |
| @Override |
| public void edgeRemoved(final Edge edge) { |
| System.out.println("Edge [" + edge.toString() + "] removed from graph [" + graph.toString() + "]"); |
| } |
| |
| @Override |
| public void edgePropertyRemoved(final Edge element, final Property removedValue) { |
| System.out.println("Edge [" + element.toString() + "] property with value of [" + removedValue + "] removed in graph [" + graph.toString() + "]"); |
| } |
| |
| @Override |
| public void edgePropertyChanged(final Edge element, final Property oldValue, final Object setValue) { |
| System.out.println("Edge [" + element.toString() + "] property change value from [" + oldValue + "] to [" + setValue + "] in graph [" + graph.toString() + "]"); |
| } |
| |
| @Override |
| public void vertexPropertyPropertyChanged(final VertexProperty element, final Property oldValue, final Object setValue) { |
| System.out.println("VertexProperty [" + element.toString() + "] property change value from [" + oldValue + "] to [" + setValue + "] in graph [" + graph.toString() + "]"); |
| } |
| |
| @Override |
| public void vertexPropertyPropertyRemoved(final VertexProperty element, final Property oldValue) { |
| System.out.println("VertexProperty [" + element.toString() + "] property with value of [" + oldValue + "] removed in graph [" + graph.toString() + "]"); |
| } |
| |
| @Override |
| public void vertexPropertyChanged(final Vertex element, final Property oldValue, final Object setValue, final Object... vertexPropertyKeyValues) { |
| // do nothing - deprecated |
| } |
| |
| @Override |
| public void vertexPropertyChanged(final Vertex element, final VertexProperty oldValue, final Object setValue, final Object... vertexPropertyKeyValues) { |
| System.out.println("Vertex [" + element.toString() + "] property [" + oldValue + "] change to [" + setValue + "] in graph [" + graph.toString() + "]"); |
| } |
| |
| @Override |
| public String toString() { |
| return MutationListener.class.getSimpleName() + "[" + graph + "]"; |
| } |
| } |