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/*******************************************************************************
* Copyright (c) 2009 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.db.internal.vendor;
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 databases that simply model the catalogs returned
* by the underlying JDBC driver (e.g. Sybase).
* @see java.sql.DatabaseMetaData#getCatalogs()
*/
class SimpleCatalogStrategy
implements CatalogStrategy
{
// singleton
private static final CatalogStrategy INSTANCE = new SimpleCatalogStrategy();
/**
* Return the singleton.
*/
static CatalogStrategy instance() {
return INSTANCE;
}
/**
* Ensure single instance.
*/
private SimpleCatalogStrategy() {
super();
}
@SuppressWarnings("unchecked")
public boolean supportsCatalogs(Database database) {
// Bug 327572 - Unfortunately DTP allows for optional support of catalogs in extensions
List<Catalog> catalogs = database.getCatalogs();
if ((catalogs == null) || catalogs.isEmpty()) {
return false;
}
// normal logic:
return true;
}
@SuppressWarnings("unchecked")
public List<Catalog> getCatalogs(Database database) {
List<Catalog> catalogs = database.getCatalogs();
// Bug 327572 - Unfortunately DTP allows for optional support of catalogs in extensions
if ((catalogs == null) || catalogs.isEmpty()) {
return Collections.emptyList();
}
// normal logic:
return catalogs;
}
@SuppressWarnings("unchecked")
public List<Schema> getSchemas(Database database) {
List<Catalog> catalogs = database.getCatalogs();
// Bug 327572 - Unfortunately DTP allows for optional support of catalogs in extensions
// if there are no catalogs, the database must hold the schemata directly
if ((catalogs == null) || catalogs.isEmpty()) {
return database.getSchemas();
}
// normal logic:
return Collections.emptyList();
}
}
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