groovy-core/src/main/groovy/lang/MetaArrayLengthProperty.java

/*
 * Copyright 2003-2007 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;


/**
 * Represents a property on a bean which may have a getter and/or a setter
 * 
 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
 * @version $Revision$
 */
public class MetaArrayLengthProperty extends MetaProperty {

    public MetaArrayLengthProperty() {
		super("length", int.class);
    }

    /**
     * @return the property of the given object
     * @throws Exception if the property could not be evaluated
     */
    public Object getProperty(Object object) {
        return new Integer(java.lang.reflect.Array.getLength(object));
    }

    /**
     * Sets the property on the given object to the new value
     * 
     * @param object on which to set the property
     * @param newValue the new value of the property
     * @throws RuntimeException if the property could not be set
     */
    public void setProperty(Object object, Object newValue) {
		throw new ReadOnlyPropertyException("length", object.getClass());
    }
}