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/*******************************************************************************
* Copyright (c) 2006, 2007 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;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.Set;
import org.eclipse.datatools.connectivity.sqm.core.rte.ICatalogObject;
import org.eclipse.datatools.connectivity.sqm.core.rte.ICatalogObjectListener;
import org.eclipse.emf.common.util.EList;
/**
* Wrap a DTP Database
*/
public final class DTPDatabaseWrapper extends Database {
final ConnectionProfile profile;
final org.eclipse.datatools.modelbase.sql.schema.Database dtpDatabase;
private ICatalogObjectListener databaseListener;
private Set<Catalog> catalogs; // lazy-initialized
private Set<Schema> schemata; // lazy-initialized
DTPDatabaseWrapper( ConnectionProfile profile, org.eclipse.datatools.modelbase.sql.schema.Database dtpDatabase) {
super();
this.dtpDatabase = dtpDatabase;
this.profile = profile;
this.initialize();
}
// ********** behavior **********
private void initialize() {
if( this.connectionIsOnline()) {
this.databaseListener = this.buildDatabaseListener();
this.addCatalogObjectListener(( ICatalogObject) this.dtpDatabase, this.databaseListener);
}
}
@Override
protected boolean connectionIsOnline() {
return this.profile.isConnected();
}
private ICatalogObjectListener buildDatabaseListener() {
return new ICatalogObjectListener() {
public void notifyChanged( final ICatalogObject database, final int eventType) {
if( database == DTPDatabaseWrapper.this.dtpDatabase) {
DTPDatabaseWrapper.this.refresh();
DTPDatabaseWrapper.this.profile.databaseChanged( DTPDatabaseWrapper.this, eventType);
}
}
};
}
@Override
void refresh() {
this.disposeSchemata();
this.disposeCatalogs();
this.schemata = null;
this.catalogs = null;
}
@Override
void catalogChanged( Catalog catalog, int eventType) {
this.profile.catalogChanged( catalog, this, eventType);
return;
}
@Override
void schemaChanged( Schema schema, int eventType) {
this.profile.schemaChanged( schema, this, eventType);
return;
}
@Override
void tableChanged( Table table, Schema schema, int eventType) {
this.profile.tableChanged( table, schema, this, eventType);
return;
}
@Override
protected void dispose() {
this.removeCatalogObjectListener(( ICatalogObject) this.dtpDatabase, this.databaseListener);
this.disposeSchemata();
this.disposeCatalogs();
}
private void disposeSchemata() {
if( this.schemata != null) {
for( Iterator<Schema> stream = this.schemata(); stream.hasNext(); ) {
stream.next().dispose();
}
}
}
private void disposeCatalogs() {
if( this.catalogs != null) {
for( Iterator<Catalog> stream = this.catalogs(); stream.hasNext(); ) {
stream.next().dispose();
}
}
}
// ********** queries **********
@Override
public String getName() {
return this.dtpDatabase.getName();
}
@Override
public String getVendor() {
return this.dtpDatabase.getVendor();
}
@Override
public String getVersion() {
return this.dtpDatabase.getVersion();
}
// ***** schemata
@Override
synchronized Set<Schema> getSchemata() {
if( this.schemata == null) {
this.schemata = this.buildSchemata();
}
return this.schemata;
}
@SuppressWarnings("unchecked")
private Set<Schema> buildSchemata() {
Set<Schema> result;
if( this.supportsCatalogs()) {
result = this.getSchemataForCatalogNamed( this.profile.getCatalogName());
}
else {
EList<org.eclipse.datatools.modelbase.sql.schema.Schema> dtpSchemata = this.dtpDatabase.getSchemas();
result = new HashSet<Schema>( dtpSchemata.size());
for (org.eclipse.datatools.modelbase.sql.schema.Schema dtpSchema : dtpSchemata) {
result.add( this.wrap(dtpSchema));
}
}
return result;
}
// ***** catalogs
@SuppressWarnings("unchecked")
@Override
public boolean supportsCatalogs() {
EList<org.eclipse.datatools.modelbase.sql.schema.Schema> dtpSchemata = this.dtpDatabase.getSchemas();
return ( dtpSchemata == null || dtpSchemata.size() == 0);
}
@SuppressWarnings("unchecked")
@Override
public String getDefaultCatalogName() {
if( !this.supportsCatalogs()) { // this database doesn't support catalogs
return "";
}
String userName = this.profile.getUserName();
for (org.eclipse.datatools.modelbase.sql.schema.Catalog dtpCatalog : (EList<org.eclipse.datatools.modelbase.sql.schema.Catalog>) this.dtpDatabase.getCatalogs()) {
if( dtpCatalog.getName().length() == 0) { // special catalog that contains all schemata
return "";
}
else if( dtpCatalog.getName().equals( userName)) {
return userName; // returns user name as default catalog
}
}
throw new NoSuchElementException();
}
@Override
synchronized Set<Catalog> getCatalogs() {
if( this.catalogs == null) {
this.catalogs = this.buildCatalogs();
}
return this.catalogs;
}
@SuppressWarnings("unchecked")
private Set<Catalog> buildCatalogs() {
EList<org.eclipse.datatools.modelbase.sql.schema.Catalog> dtpCatalogs = this.dtpDatabase.getCatalogs();
if( dtpCatalogs == null) {
return Collections.emptySet();
}
Set<Catalog> result = new HashSet<Catalog>( dtpCatalogs.size());
for (org.eclipse.datatools.modelbase.sql.schema.Catalog dtpCatalog : dtpCatalogs) {
result.add( this.wrap(dtpCatalog));
}
return result;
}
private Set<Schema> getSchemataForCatalogNamed( String catalogName) {
Catalog catalog = this.catalogNamed( catalogName);
return ( catalog != null) ? catalog.buildSchemata() : Collections.<Schema>emptySet();
}
}
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