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/*******************************************************************************
* Copyright (c) 2009, 2013 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.jpa.db.internal.driver;
import java.util.Collections;
import java.util.List;
import org.eclipse.datatools.modelbase.sql.schema.Catalog;
import org.eclipse.datatools.modelbase.sql.schema.Database;
import org.eclipse.datatools.modelbase.sql.schema.Schema;
/**
* Catalog strategy for DTP database drivers that build a "virtual" catalog
* (that has no name) because the underlying JDBC driver does not return any
* catalogs (e.g. Oracle). This catalog cannot be specified by the user in
* annotations etc.
*
* @see java.sql.DatabaseMetaData#getCatalogs()
*/
class FauxCatalogStrategy
implements CatalogStrategy
{
private final Database database;
FauxCatalogStrategy(Database database) {
super();
this.database = database;
}
public boolean supportsCatalogs() {
return false;
}
public List<Catalog> getCatalogs() {
return Collections.emptyList();
}
@SuppressWarnings("unchecked")
public List<Schema> getSchemas() {
// 308947 - hack to support old IBM DTP/RDB extension for Oracle
List<Catalog> catalogs = database.getCatalogs();
// if there are no catalogs, the database must hold the schemata directly
if ((catalogs == null) || catalogs.isEmpty()) {
return database.getSchemas();
}
return this.getFauxCatalog().getSchemas();
}
private Catalog getFauxCatalog() {
List<Catalog> catalogs = this.getCatalogs_();
if (catalogs == null) {
throw new IllegalStateException("catalogs list is null"); //$NON-NLS-1$
}
if (catalogs.size() != 1) {
throw new IllegalStateException("not a single catalog: " + catalogs); //$NON-NLS-1$
}
Catalog catalog = catalogs.get(0);
if (catalog.getName().length() != 0) {
throw new IllegalStateException("illegal name: " + catalog.getName()); //$NON-NLS-1$
}
return catalog;
}
@SuppressWarnings("unchecked")
private List<Catalog> getCatalogs_() {
return this.database.getCatalogs();
}
}
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