com.google.gwt.rpc.client.ast.ScalarValueCommand Maven / Gradle / Ivy
/*
* Copyright 2009 Google Inc.
*
* 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 com.google.gwt.rpc.client.ast;
/**
* Represents a type hierarchy of values that do not maintain object identity on
* the client.
*/
public abstract class ScalarValueCommand extends ValueCommand {
@Override
public final boolean equals(Object o) {
if (!(o instanceof ScalarValueCommand)) {
return false;
}
ScalarValueCommand other = (ScalarValueCommand) o;
Object myValue = getValue();
Object otherValue = other.getValue();
if (myValue == null && otherValue == null) {
return true;
} else if (myValue == null && otherValue != null) {
return false;
} else {
return myValue.equals(otherValue);
}
}
/**
* Returns the value represented by the ScalarValueCommand.
*/
public abstract Object getValue();
@Override
public final int hashCode() {
return getValue() == null ? 0 : getValue().hashCode();
}
}