/*
* Copyright 2003-2014 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.codehaus.groovy.runtime.metaclass;
import groovy.lang.GroovyRuntimeException;
import groovy.lang.MetaMethod;
import groovy.lang.MetaProperty;
import org.codehaus.groovy.reflection.CachedField;
import org.codehaus.groovy.runtime.InvokerHelper;
import org.codehaus.groovy.runtime.MetaClassHelper;
/**
* This class represents a property with multiple setters. Unlike a MetaBeanProperty you cannot get the setter
* in this case. Instead invocation is done through the meta class of the property recevier.
*/
public class MultipleSetterProperty extends MetaProperty {
private MetaMethod getter;
private CachedField field;
private final String setterName;
public MultipleSetterProperty(String name) {
super(name, Object.class);
this.setterName = MetaProperty.getSetterName(name);
}
@Override
public Object getProperty(Object object) {
MetaMethod getter = getGetter();
if (getter == null) {
if (field != null) return field.getProperty(object);
throw new GroovyRuntimeException("Cannot read write-only property: " + name);
}
return getter.invoke(object, MetaClassHelper.EMPTY_ARRAY);
}
@Override
public void setProperty(Object object, Object newValue) {
InvokerHelper.getMetaClass(object).invokeMethod(object, setterName, new Object[]{newValue});
}
public void setField(CachedField f) {
this.field = f;
}
public CachedField getField() {
return field;
}
public void setGetter(MetaMethod getter) {
this.getter = getter;
}
public MetaMethod getGetter() {
return getter;
}
public MetaProperty createStaticVersion() {
boolean mf = field==null || field.isStatic();
boolean mg = getter==null || getter.isStatic();
if (mf && mg) return this;
if (mg) {
MultipleSetterProperty newMsp = new MultipleSetterProperty(name);
newMsp.setGetter(getter);
return newMsp;
} else if (mf) {
MultipleSetterProperty newMsp = new MultipleSetterProperty(name);
newMsp.setField(field);
return newMsp;
}
return null;
}
}