camundafeel.de.odysseus.el.tree.impl.ast.AstRightValue Maven / Gradle / Ivy
/*
* Copyright 2006-2009 Odysseus Software GmbH
*
* 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 de.odysseus.el.tree.impl.ast;
import javax.el.ELContext;
import javax.el.ELException;
import javax.el.MethodInfo;
import javax.el.ValueReference;
import de.odysseus.el.misc.LocalMessages;
import de.odysseus.el.tree.Bindings;
/**
* @author Christoph Beck
*/
public abstract class AstRightValue extends AstNode {
/**
* Answer false
*/
public final boolean isLiteralText() {
return false;
}
/**
* according to the spec, the result is undefined for rvalues, so answer null
*/
public final Class getType(Bindings bindings, ELContext context) {
return null;
}
/**
* non-lvalues are always readonly, so answer true
*/
public final boolean isReadOnly(Bindings bindings, ELContext context) {
return true;
}
/**
* non-lvalues are always readonly, so throw an exception
*/
public final void setValue(Bindings bindings, ELContext context, Object value) {
throw new ELException(LocalMessages.get("error.value.set.rvalue", getStructuralId(bindings)));
}
public final MethodInfo getMethodInfo(Bindings bindings, ELContext context, Class returnType, Class[] paramTypes) {
return null;
}
public final Object invoke(Bindings bindings, ELContext context, Class returnType, Class[] paramTypes, Object[] paramValues) {
throw new ELException(LocalMessages.get("error.method.invalid", getStructuralId(bindings)));
}
public final boolean isLeftValue() {
return false;
}
public boolean isMethodInvocation() {
return false;
}
public final ValueReference getValueReference(Bindings bindings, ELContext context) {
return null;
}
}