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/*******************************************************************************
* Copyright (c) 2008 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.ui.internal.mappings.db;
import java.util.Iterator;
import org.eclipse.jpt.core.JpaNode;
import org.eclipse.jpt.db.Database;
import org.eclipse.jpt.db.Schema;
import org.eclipse.jpt.db.Table;
import org.eclipse.jpt.ui.WidgetFactory;
import org.eclipse.jpt.ui.internal.widgets.AbstractPane;
import org.eclipse.jpt.utility.internal.iterators.EmptyIterator;
import org.eclipse.jpt.utility.model.value.PropertyValueModel;
import org.eclipse.swt.widgets.Composite;
/**
* This database object combo handles showing the database's tables.
*
* @version 2.0
* @since 2.0
*/
public abstract class TableCombo<T extends JpaNode> extends AbstractDatabaseObjectCombo<T>
{
/**
* Creates a new <code>TableCombo</code>.
*
* @param parentPane The parent container of this one
* @param parent The parent container
*/
public TableCombo(AbstractPane<? extends T> parentPane,
Composite parent) {
super(parentPane, parent);
}
/**
* Creates a new <code>TableCombo</code>.
*
* @param parentPane The parent container of this one
* @param subjectHolder The holder of this pane's subject
* @param parent The parent container
*/
public TableCombo(AbstractPane<?> parentPane,
PropertyValueModel<? extends T> subjectHolder,
Composite parent) {
super(parentPane, subjectHolder, parent);
}
/**
* Creates a new <code>TableCombo</code>.
*
* @param subjectHolder The holder of the subject
* @param parent The parent container
* @param widgetFactory The factory used to create various common widgets
*/
public TableCombo(PropertyValueModel<? extends T> subjectHolder,
Composite parent,
WidgetFactory widgetFactory)
{
super(subjectHolder, parent, widgetFactory);
}
/**
* Retrieves the name of the schema from where the table is located.
*
* @return The table's schema name
*/
protected abstract String schemaName();
/*
* (non-Javadoc)
*/
@Override
protected void tableChanged(Table table) {
super.tableChanged(table);
if (table == table()) {
this.doPopulate();
}
}
/**
* Returns the selected database table.
*
* @return The selected table
*/
protected abstract Table table();
/*
* (non-Javadoc)
*/
@Override
protected Iterator<String> values() {
Database database = database();
String schemaName = schemaName();
if ((schemaName != null) && (database != null)) {
Schema schema = database.schemaNamed(schemaName);
if (schema != null) {
return schema.tableNames();
}
}
return EmptyIterator.instance();
}
}
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