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/*******************************************************************************
* Copyright (c) 2011 Oracle. 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.jpt.jpa.core.jpql.spi;
import org.eclipse.jpt.common.utility.internal.StringTools;
import org.eclipse.jpt.jpa.core.context.NamedQuery;
import org.eclipse.persistence.jpa.jpql.spi.IManagedTypeProvider;
import org.eclipse.persistence.jpa.jpql.spi.IQuery;
/**
* The concrete implementation of {@link IQuery} that is wrapping the design-time representation
* of a JPQL query.
*
* Provisional API: This interface is part of an interim API that is still under development and
* expected to change significantly before reaching stability. It is available at this early stage
* to solicit feedback from pioneering adopters on the understanding that any code that uses this
* API will almost certainly be broken (repeatedly) as the API evolves.
*
* @version 3.1
* @since 3.0
* @author Pascal Filion
*/
@SuppressWarnings("nls")
public class JpaQuery implements IQuery {
/**
* The actual JPQL query, which can differ from the one owned by the model object, which happens
* when the model is out of sync because it has not been updated yet.
*/
private String actualQuery;
/**
* The provider of managed types.
*/
private IManagedTypeProvider provider;
/**
* The model object holding onto the JPQL query.
*/
private NamedQuery query;
/**
* Creates a new <code>JpaQuery</code>.
*
* @param provider The provider of managed types
* @param query The model object of the JPQL query
*/
public JpaQuery(IManagedTypeProvider provider, NamedQuery query) {
this(provider, query, query.getQuery());
}
/**
* Creates a new <code>JpaQuery</code>.
*
* @param provider The provider of managed types
* @param query The model object of the JPQL query
* @param actualQuery The actual JPQL query, which can differ from the one owned by the model
* object, which happens when the model is out of sync because it has not been updated yet
*/
public JpaQuery(IManagedTypeProvider provider, NamedQuery query, String actualQuery) {
super();
initialize(provider, query, actualQuery);
}
/**
* {@inheritDoc}
*/
public String getExpression() {
return actualQuery;
}
/**
* {@inheritDoc}
*/
public IManagedTypeProvider getProvider() {
return provider;
}
/**
* Returns the encapsulated {@link NamedQuery}, which is the actual object.
*
* @return The design-time representation of a JPQL query
*/
protected NamedQuery getQuery() {
return query;
}
protected void initialize(IManagedTypeProvider provider, NamedQuery query, String actualQuery) {
this.query = query;
this.provider = provider;
this.actualQuery = actualQuery;
if (this.actualQuery == null) {
this.actualQuery = StringTools.EMPTY_STRING;
}
}
/**
* {@inheritDoc}
*/
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(super.toString());
sb.append(", query=");
sb.append(getExpression());
return sb.toString();
}
}
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