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/*
 * Copyright 2003-2013 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 groovy.lang;

/**
 * The interface implemented by all Groovy objects.
 * 
 * Especially handy for using Groovy objects when in the Java world.
 *
 * @author James Strachan
 * @version $Revision$
 */
public interface GroovyObject {

    /**
     * Invokes the given method.
     *
     * @param name the name of the method to call
     * @param args the arguments to use for the method call
     * @return the result of invoking the method
     */
    Object invokeMethod(String name, Object args);

    /**
     * Retrieves a property value.
     *
     * @param propertyName the name of the property of interest
     * @return the given property
     */
    Object getProperty(String propertyName);

    /**
     * Sets the given property to the new value.
     *
     * @param propertyName the name of the property of interest
     * @param newValue     the new value for the property
     */
    void setProperty(String propertyName, Object newValue);

    /**
     * Returns the metaclass for a given class.
     *
     * @return the metaClass of this instance
     */
    MetaClass getMetaClass();

    /**
     * Allows the MetaClass to be replaced with a derived implementation.
     *
     * @param metaClass the new metaclass
     */
    void setMetaClass(MetaClass metaClass);
}