/* * Copyright 2017 HugeGraph Authors * * 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 com.baidu.hugegraph.event; import java.util.Arrays; import java.util.Collections; import com.baidu.hugegraph.util.E; public class Event extends java.util.EventObject { private static final long serialVersionUID = 1625973849208342813L; private String name; private Object[] args; public Event(Object source, String event) { this(source, event, Collections.emptyList().toArray()); } public Event(Object source, String event, Object... args) { super(source); this.name = event; this.args = args; } public String name() { return this.name; } public Object[] args() { return this.args; } public void checkArgs(Class<?>... classes) throws IllegalArgumentException { E.checkArgument(this.args.length == classes.length, "The args count of event '%s' should be %s(actual %s)", this.name, classes.length, this.args.length); int i = 0; for (Class<?> c : classes) { Object arg = this.args[i++]; if (arg == null) { continue; } E.checkArgument(c.isAssignableFrom(arg.getClass()), "The arg '%s'(%s) can't match %s", arg, arg.getClass(), c); } } @Override public String toString() { return String.format("Event{name='%s', args=%s}", this.name, Arrays.asList(this.args)); } }