/*******************************************************************************
* Copyright (c) 2006, 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:
* Oracle - initial API and implementation
*
******************************************************************************/
package org.eclipse.persistence.jpa.jpql.tools.spi.java;
import java.lang.annotation.Annotation;
import java.lang.reflect.Member;
import java.util.HashMap;
import java.util.Map;
import javax.persistence.Entity;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import org.eclipse.persistence.jpa.jpql.ExpressionTools;
import org.eclipse.persistence.jpa.jpql.tools.spi.IEntity;
import org.eclipse.persistence.jpa.jpql.tools.spi.IManagedTypeProvider;
import org.eclipse.persistence.jpa.jpql.tools.spi.IManagedTypeVisitor;
import org.eclipse.persistence.jpa.jpql.tools.spi.IMappingBuilder;
import org.eclipse.persistence.jpa.jpql.tools.spi.IQuery;
/**
* The concrete implementation of {@link IEntity} that is wrapping the runtime representation of a
* JPA entity.
*
* @version 2.4
* @since 2.3
* @author Pascal Filion
*/
public class JavaEntity extends JavaManagedType
implements IEntity {
/**
* The entity name, if it was defined in @Entity.name() or the short class name.
*/
private String name;
/**
* The list of named queries mapped by their name.
*/
private Map<String, IQuery> queries;
/**
* Creates a new <code>JavaEntity</code>.
*
* @param provider The provider of JPA managed types
* @param type The {@link org.eclipse.persistence.jpa.jpql.tools.spi.IType IType} wrapping the Java type
* @param mappingBuilder The builder that is responsible to create the {@link org.eclipse.
* persistence.jpa.jpql.spi.IMapping IMapping} wrapping a persistent attribute or property
*/
public JavaEntity(IManagedTypeProvider provider,
JavaType type,
IMappingBuilder<Member> mappingBuilder) {
super(provider, type, mappingBuilder);
}
/**
* {@inheritDoc}
*/
public void accept(IManagedTypeVisitor visitor) {
visitor.visit(this);
}
protected String buildName() {
Class<?> type = getType().getType();
Entity entity = type.getAnnotation(Entity.class);
String entityName = entity.name();
if (ExpressionTools.stringIsEmpty(entityName)) {
name = type.getSimpleName();
}
return name;
}
protected Map<String, IQuery> buildQueries() {
Map<String, IQuery> queries = new HashMap<String, IQuery>();
try {
Class<?> type = getType().getType();
Annotation[] annotations = type.getAnnotations();
NamedQueries namedQueries = getAnnotation(annotations, NamedQueries.class);
if (namedQueries != null) {
for (NamedQuery namedQuery : namedQueries.value()) {
IQuery query = buildQuery(namedQuery);
queries.put(namedQuery.name(), query);
}
}
else {
NamedQuery namedQuery = getAnnotation(annotations, NamedQuery.class);
if (namedQuery != null) {
IQuery query = buildQuery(namedQuery);
queries.put(namedQuery.name(), query);
}
}
}
catch (Exception e) {
// Ignore
}
return queries;
}
protected IQuery buildQuery(NamedQuery namedQuery) {
return new JavaQuery(getProvider(), namedQuery.query());
}
@SuppressWarnings("unchecked")
protected <T extends Annotation> T getAnnotation(Annotation[] annotations,
Class<T> annotationType) {
for (Annotation annotation : annotations) {
if (annotationType == annotation.annotationType()) {
return (T) annotation;
}
}
return null;
}
/**
* {@inheritDoc}
*/
public String getName() {
if (name == null) {
name = buildName();
}
return name;
}
/**
* {@inheritDoc}
*/
public IQuery getNamedQuery(String queryName) {
initializeQueries();
return queries.get(queryName);
}
protected boolean hasAnnotation(Annotation[] annotations, String annotationType) {
for (Annotation annotation : annotations) {
if (annotationType.equals(annotation.annotationType().getName())) {
return true;
}
}
return false;
}
protected void initializeQueries() {
if (queries == null) {
queries = buildQueries();
}
}
/**
* {@inheritDoc}
*/
@Override
public String toString() {
return getName();
}
}