/*******************************************************************************
* Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* 08/10/2009-2.0 Guy Pelletier
* - 267391: JPA 2.0 implement/extend/use an APT tooling library for MetaModel API canonical classes
******************************************************************************/
package org.eclipse.persistence.internal.jpa.modelgen.visitors;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.AnnotationValue;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.VariableElement;
import javax.lang.model.type.TypeMirror;
import javax.lang.model.util.AbstractAnnotationValueVisitor6;
import org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotation;
/**
* An annotation element visitor.
*
* @author Guy Pelletier
* @since EclipseLink 1.2
*/
public class AnnotationValueVisitor<R, P> extends AbstractAnnotationValueVisitor6<Object, Object> {
/**
* INTERNAL:
*/
public AnnotationValueVisitor() {}
/**
* INTERNAL:
* Visits an annotation mirror. Kicks off the building of the metadata
* annotation.
*/
@Override
public Object visitAnnotation(AnnotationMirror annotationMirror, Object arg1) {
// Set the name of the annotation.
MetadataAnnotation annotation = new MetadataAnnotation();
annotation.setName(annotationMirror.getAnnotationType().toString());
// Process the values.
Set<? extends ExecutableElement> keys = annotationMirror.getElementValues().keySet();
for (ExecutableElement annotationElement : keys) {
AnnotationValue annotationValue = annotationMirror.getElementValues().get(annotationElement);
String attribute = annotationElement.getSimpleName().toString();
Object attributeValue = annotationValue.accept(this, arg1);
annotation.addAttribute(attribute, attributeValue);
}
return annotation;
}
/**
* INTERNAL:
* e.g.
* joinColumns={
* @JoinColumn(name="ID1", referencedColumnName="ID"),
* @JoinColumn(name="ID2", referencedColumnName="ID")}
*/
@Override
public Object visitArray(List<? extends AnnotationValue> annotationValues, Object arg1) {
ArrayList<Object> values = new ArrayList<Object>();
for (AnnotationValue annotationValue : annotationValues) {
values.add(annotationValue.accept(this, arg1));
}
return values.toArray();
}
/**
* INTERNAL:
* e.g. shared=true
*/
@Override
public Object visitBoolean(boolean bool, Object arg1) {
return Boolean.valueOf(bool);
}
/**
* INTERNAL:
* e.g. byte=13
*/
@Override
public Object visitByte(byte b, Object arg1) {
return Byte.valueOf(b);
}
/**
* INTERNAL:
* e.g. type='c'
*/
@Override
public Object visitChar(char c, Object arg1) {
return Character.valueOf(c);
}
/**
* INTERNAL:
* e.g. size=6.02E23
*/
@Override
public Object visitDouble(double d, Object arg1) {
return Double.valueOf(d);
}
/**
* INTERNAL:
* e.g. fetch=LAZY
*/
@Override
public Object visitEnumConstant(VariableElement variableArgument, Object arg1) {
return variableArgument.getSimpleName().toString();
}
/**
* INTERNAL:
* e.g. size=6.02e23f
*/
@Override
public Object visitFloat(float f, Object arg1) {
return Float.valueOf(f);
}
/**
* INTERNAL:
* e.g. size=730
*/
@Override
public Object visitInt(int i, Object arg1) {
return Integer.valueOf(i);
}
/**
* INTERNAL:
* e.g. size=9223372036854775807
*/
@Override
public Object visitLong(long l, Object arg1) {
return Long.valueOf(l);
}
/**
* INTERNAL:
* e.g. size=7
*/
@Override
public Object visitShort(short s, Object arg1) {
return Short.valueOf(s);
}
/**
* INTERNAL:
* e.g. name="findAllSQLEmployees"
*/
@Override
public Object visitString(String str, Object arg1) {
return str;
}
/**
* INTERNAL:
* e.g. targetEntity=Item.class
*/
@Override
public Object visitType(TypeMirror typeMirror, Object arg1) {
return typeMirror.toString();
}
}