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Vertex.java
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Vertex.java
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/*
* 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.hugegraph.structure.graph;
import java.util.Map;
import org.apache.hugegraph.exception.InvalidOperationException;
import org.apache.hugegraph.structure.GraphElement;
import org.apache.hugegraph.util.E;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
public class Vertex extends GraphElement {
@JsonProperty("id")
private Object id;
@JsonCreator
public Vertex(@JsonProperty("label") String label) {
this.label = label;
this.type = "vertex";
}
@Override
public Object id() {
return this.id;
}
public void id(Object id) {
this.id = id;
}
public Edge addEdge(String label, Vertex vertex, Object... properties) {
E.checkNotNull(label, "The edge label can not be null.");
E.checkNotNull(vertex, "The target vertex can not be null.");
return this.manager.addEdge(this, label, vertex, properties);
}
public Edge addEdge(String label, Vertex vertex,
Map<String, Object> properties) {
E.checkNotNull(label, "The edge label can not be null.");
E.checkNotNull(vertex, "The target vertex can not be null.");
return this.manager.addEdge(this, label, vertex, properties);
}
@Override
public Vertex property(String key, Object value) {
E.checkNotNull(key, "The property name can not be null");
E.checkNotNull(value, "The property value can not be null");
if (this.fresh()) {
return (Vertex) super.property(key, value);
} else {
return this.setProperty(key, value);
}
}
@Override
protected Vertex setProperty(String key, Object value) {
Vertex vertex = new Vertex(this.label);
vertex.id(this.id);
vertex.property(key, value);
// NOTE: append can also be used to update property
vertex = this.manager.appendVertexProperty(vertex);
super.property(key, vertex.property(key));
return this;
}
@Override
public Vertex removeProperty(String key) {
E.checkNotNull(key, "The property name can not be null");
if (!this.properties.containsKey(key)) {
throw new InvalidOperationException("The vertex '%s' doesn't have the property '%s'",
this.id, key);
}
Vertex vertex = new Vertex(this.label);
vertex.id(this.id);
Object value = this.properties.get(key);
vertex.property(key, value);
this.manager.eliminateVertexProperty(vertex);
this.properties().remove(key);
return this;
}
@Override
public String toString() {
return String.format("{id=%s, label=%s, properties=%s}",
this.id, this.label, this.properties);
}
}