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Groovy example source code file (PropertyModel.java)

This example Groovy source code file (PropertyModel.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

class, class, nestedvaluemodel, object, object, propertymodel, propertymodel, string, string, valuemodel

The Groovy PropertyModel.java source code

/*
 * 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.model;

import org.codehaus.groovy.runtime.InvokerHelper;

/**
 * Represents a property of a value as a model.
 * 
 * @author <a href="mailto:james@coredevelopers.net">James Strachan
 * @version $Revision: 7054 $
 */
public class PropertyModel implements ValueModel, NestedValueModel {

    private ValueModel sourceModel;
    private String property;
    private Class type;
    boolean editable;

    public PropertyModel(ValueModel sourceModel, String property) {
        this(sourceModel, property, Object.class, true);
    }

    public PropertyModel(ValueModel sourceModel, String property, Class type) {
        this(sourceModel, property, type, true);
    }

    public PropertyModel(ValueModel sourceModel, String property, Class type, boolean editable) {
        this.sourceModel = sourceModel;
        this.property = property;
        this.type = type;
        //TODO After 1.1 we should introspect the meta property and set editable to false if the property is read only
        this.editable = editable;
    }

    public String getProperty() {
        return property;
    }

    public ValueModel getSourceModel() {
        return sourceModel;
    }

    public Object getValue() {
        Object source = sourceModel.getValue();
        if (source != null) {
            return InvokerHelper.getProperty(source, property);
        }
        return null;
    }

    public void setValue(Object value) {
        Object source = sourceModel.getValue();
        if (source != null) {
            InvokerHelper.setProperty(source, property, value);
        }
    }
    
    public Class getType() {
        return type;
    }

    public boolean isEditable() {
        return editable;
    }

}

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