| /******************************************************************************* |
| * 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 build a "virtual" catalog (that has |
| * no name) because the underlying JDBC driver does not return any catalogs |
| * (e.g. Oracle). |
| * @see java.sql.DatabaseMetaData#getCatalogs() |
| */ |
| class FauxCatalogStrategy |
| implements CatalogStrategy |
| { |
| // singleton |
| private static final CatalogStrategy INSTANCE = new FauxCatalogStrategy(); |
| |
| /** |
| * Return the singleton. |
| */ |
| static CatalogStrategy instance() { |
| return INSTANCE; |
| } |
| |
| /** |
| * Ensure single instance. |
| */ |
| private FauxCatalogStrategy() { |
| super(); |
| } |
| |
| public boolean supportsCatalogs(Database database) { |
| return false; |
| } |
| |
| public List<Catalog> getCatalogs(Database database) { |
| return Collections.emptyList(); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public List<Schema> getSchemas(Database database) { |
| return this.getFauxCatalog(database.getCatalogs()).getSchemas(); |
| } |
| |
| private Catalog getFauxCatalog(List<Catalog> catalogs) { |
| if (catalogs == null) { |
| throw new IllegalStateException(); |
| } |
| if (catalogs.size() != 1) { |
| throw new IllegalStateException("not a single catalog: " + catalogs.size()); //$NON-NLS-1$ |
| } |
| |
| Catalog catalog = catalogs.get(0); |
| if (catalog.getName().length() != 0) { |
| throw new IllegalStateException("illegal name: " + catalog.getName()); //$NON-NLS-1$ |
| } |
| return catalog; |
| } |
| |
| } |