groovy.lang.MetaProperty Maven / Gradle / Ivy
/*
* 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;
import java.lang.reflect.Modifier;
import org.codehaus.groovy.runtime.MetaClassHelper;
/**
* Represents a property on a bean which may have a getter and/or a setter
*
* @author James Strachan
* @version $Revision$
*/
public abstract class MetaProperty {
protected final String name;
protected Class type;
public static final String PROPERTY_SET_PREFIX = "set";
public MetaProperty(String name, Class type) {
this.name = name;
this.type = type;
}
/**
* @return the property of the given object
* @throws Exception if the property could not be evaluated
*/
public abstract Object getProperty(Object 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 abstract void setProperty(Object object, Object newValue);
public String getName() {
return name;
}
/**
* @return the type of the property
*/
public Class getType() {
return type;
}
public int getModifiers() {
return Modifier.PUBLIC;
}
public static String getGetterName(String propertyName, Class type) {
String prefix = type == boolean.class || type == Boolean.class ? "is" : "get";
return prefix + MetaClassHelper.capitalize(propertyName);
}
public static String getSetterName(String propertyName) {
return PROPERTY_SET_PREFIX + MetaClassHelper.capitalize(propertyName);
}
}