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/*******************************************************************************
* Copyright (c) 2006, 2007 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0, which accompanies this distribution
* and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Contributors:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.core.internal.jdtutility;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.Expression;
/**
* Provide clients with a pluggable way to manipulate an
* annotation element modifying a "declaration".
* T is the type of the object to be passed to and returned by the adapter.
*/
public interface DeclarationAnnotationElementAdapter<T> {
/**
* Given the specified declaration, return the value of the
* annotation element. Return null or an empty array
* if the element is not present.
*/
T getValue(ModifiedDeclaration declaration);
/**
* Given the specified declaration, set the value of the
* annotation element. Setting the value of the element
* to null will cause the element to be removed from its
* annotation.
*/
void setValue(T value, ModifiedDeclaration declaration);
/**
* Given the specified declaration, return the element's value expression.
* Return null if the element is not present.
*/
Expression expression(ModifiedDeclaration declaration);
/**
* Given the specified declaration, return the AST node
* corresponding to the element's value.
* If the element is missing, return the annotation's node.
*/
ASTNode astNode(ModifiedDeclaration declaration);
}
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