com.google.web.bindery.autobean.vm.impl.GetterPropertyContext Maven / Gradle / Ivy
/*
* Copyright 2010 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.web.bindery.autobean.vm.impl;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
/**
* Used by {@link ProxyAutoBean#traverseProperties()}.
*/
class GetterPropertyContext extends MethodPropertyContext {
private final Method setter;
private final Object shim;
GetterPropertyContext(ProxyAutoBean bean, Method getter) {
super(getter);
this.shim = bean.as();
// Look for the setter method.
Method found = null;
String name = BeanMethod.GET.inferName(getter);
for (Method m : getter.getDeclaringClass().getMethods()) {
if (BeanMethod.SET.matches(m) || BeanMethod.SET_BUILDER.matches(m)) {
if (BeanMethod.SET.inferName(m).equals(name)
&& getter.getReturnType().isAssignableFrom(m.getParameterTypes()[0])) {
found = m;
break;
}
}
}
setter = found;
}
@Override
public boolean canSet() {
return setter != null;
}
@Override
public void set(Object value) {
if (!canSet()) {
throw new UnsupportedOperationException("No setter");
}
try {
setter.setAccessible(true);
setter.invoke(shim, value);
} catch (IllegalArgumentException e) {
throw new RuntimeException(e);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
} catch (InvocationTargetException e) {
throw new RuntimeException(e.getCause());
}
}
}