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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.SchemaContainer;
import org.eclipse.jpt.ui.WidgetFactory;
import org.eclipse.jpt.ui.internal.widgets.Pane;
import org.eclipse.jpt.utility.internal.iterators.EmptyIterator;
import org.eclipse.jpt.utility.model.value.PropertyValueModel;
import org.eclipse.swt.widgets.Composite;
/**
* This combo-box displays a schema container's schemata.
*/
public abstract class SchemaCombo<T extends JpaNode>
extends DatabaseObjectCombo<T>
{
public SchemaCombo(Pane<? extends T> parentPane, Composite parent) {
super(parentPane, parent);
}
public SchemaCombo(
Pane<?> parentPane,
PropertyValueModel<? extends T> subjectHolder,
Composite parent
) {
super(parentPane, subjectHolder, parent);
}
public SchemaCombo(
PropertyValueModel<? extends T> subjectHolder,
Composite parent,
WidgetFactory widgetFactory
) {
super(subjectHolder, parent, widgetFactory);
}
@Override
protected Iterator<String> values() {
SchemaContainer sc = this.getDbSchemaContainer();
return (sc == null) ? EmptyIterator.<String>instance() : sc.sortedSchemaIdentifiers();
}
protected SchemaContainer getDbSchemaContainer() {
return (this.getSubject() == null) ? null : this.getDbSchemaContainer_();
}
/**
* Assume the subject is not null.
*/
protected abstract SchemaContainer getDbSchemaContainer_();
}
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