groovy.lang.MutableMetaClass Maven / Gradle / Ivy
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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.Method;
/**
* An interface that defines methods that implementers of mutable Meta classes should specify. It provides operations to perform mutations
* on the MetaClass instance.
*
* Whether a MetaClass allows mutation is up to the MetaClass itself and considerations of Thread safety
* need to be taken into account when making a MetaClass mutable
*
* The default implementation allows mutation of MetaClass instances before initialisation (before the initialize() method is called)
* but not after, thus ensuring Thread safety once a MetaClass has been constructed and placed in the registry
*
* @see MetaClassImpl
* @see MetaClass
* @author Graeme Rocher
* @since 1.5
*/
public interface MutableMetaClass extends MetaClass {
/**
* Return whether the MetaClass has been modified or not
* @return True if it has
*/
boolean isModified();
/**
* adds a new instance method to this MetaClass. Instance
* methods are able to overwrite the original methods of the
* class. Calling this method should not be done after
* initialise was called.
*
* @param method the method to be added
*/
void addNewInstanceMethod(Method method);
/**
* adds a new static method to this MetaClass. This is only
* possible as long as initialise was not called.
*
* @param method the method to be added
*/
void addNewStaticMethod(Method method);
/**
* Adds a new MetaMethod to the MetaClass
*
* @param metaMethod The MetaMethod to add
*/
void addMetaMethod(MetaMethod metaMethod);
/**
* Adds a new MetaBeanProperty to the MetaClass
*
* @param metaBeanProperty The MetaBeanProperty instance
*/
void addMetaBeanProperty(MetaBeanProperty metaBeanProperty);
// TODO: Add methods like addMetaConstructor, addMetaAttribute, addMetaAnnotation etc.
}