| /******************************************************************************* |
| * 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 unknown DTP databases. |
| * @see java.sql.DatabaseMetaData#getCatalogs() |
| */ |
| class UnknownCatalogStrategy |
| implements CatalogStrategy |
| { |
| // singleton |
| private static final CatalogStrategy INSTANCE = new UnknownCatalogStrategy(); |
| |
| /** |
| * Return the singleton. |
| */ |
| static CatalogStrategy instance() { |
| return INSTANCE; |
| } |
| |
| /** |
| * Ensure single instance. |
| */ |
| private UnknownCatalogStrategy() { |
| super(); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public boolean supportsCatalogs(Database database) { |
| List<Catalog> catalogs = database.getCatalogs(); |
| if ((catalogs == null) || catalogs.isEmpty()) { |
| return false; |
| } |
| |
| return this.getFauxCatalog(catalogs) == null; |
| } |
| |
| @SuppressWarnings("unchecked") |
| public List<Catalog> getCatalogs(Database database) { |
| List<Catalog> catalogs = database.getCatalogs(); |
| // if there are no catalogs, the database must hold the schemata directly |
| if ((catalogs == null) || catalogs.isEmpty()) { |
| return Collections.emptyList(); |
| } |
| |
| Catalog fauxCatalog = this.getFauxCatalog(catalogs); |
| return (fauxCatalog == null) ? catalogs : Collections.<Catalog>emptyList(); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public List<Schema> getSchemas(Database database) { |
| 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(); |
| } |
| |
| Catalog fauxCatalog = this.getFauxCatalog(catalogs); |
| return (fauxCatalog != null) ? fauxCatalog.getSchemas() : Collections.emptyList(); |
| } |
| |
| private Catalog getFauxCatalog(List<Catalog> catalogs) { |
| if (catalogs.size() == 1) { |
| Catalog catalog = catalogs.get(0); |
| if (catalog.getName().equals("")) { //$NON-NLS-1$ |
| return catalog; |
| } |
| } |
| return null; |
| } |
| |
| } |