org.mvel2.integration.PropertyHandler Maven / Gradle / Ivy
/**
* MVEL 2.0
* Copyright (C) 2007 The Codehaus
* Mike Brock, Dhanji Prasanna, John Graham, Mark Proctor
*
* 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.mvel2.integration;
/**
* This interface allows an external property handler to resolve a property against the provided context.
*
* @see org.mvel2.optimizers.impl.asm.ProducesBytecode
*/
public interface PropertyHandler {
/**
* Retrieves the value of the property.
*
* @param name - the name of the property to be resolved.
* @param contextObj - the current context object.
* @param variableFactory - the root variable factory provided by the runtime.
* @return - the value of the property.
*/
public Object getProperty(String name, Object contextObj, VariableResolverFactory variableFactory);
/**
* Sets the value of the property.
*
* @param name - the name of the property to be resolved.
* @param contextObj - the current context object.
* @param variableFactory - the root variable factory provided by the runtime.
* @param value - the value to be set to the resolved property
* @return - the resultant value of the property (should normally be the same as the value passed)
*/
public Object setProperty(String name, Object contextObj, VariableResolverFactory variableFactory, Object value);
}