/*! ******************************************************************************
*
* Pentaho Data Integration
*
* Copyright (C) 2002-2016 by Pentaho : http://www.pentaho.com
*
*******************************************************************************
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
package org.pentaho.di.ui.core.database.dialog;
import java.util.ListIterator;
import org.pentaho.di.core.database.DatabaseMeta;
import org.pentaho.di.core.util.Utils;
import org.pentaho.ui.xul.XulEventSourceAdapter;
import org.pentaho.ui.xul.util.AbstractModelNode;
public class XulDatabaseExplorerModel extends XulEventSourceAdapter {
// TODO can this be renamed? it's actually just the root node
private XulDatabaseExplorerNode database;
protected DatabaseMeta databaseMeta;
private DatabaseExplorerNode selectedNode;
public XulDatabaseExplorerModel( DatabaseMeta aDatabaseMeta ) {
this.database = new XulDatabaseExplorerNode();
this.databaseMeta = aDatabaseMeta;
}
public DatabaseMeta getDatabaseMeta() {
return this.databaseMeta;
}
public XulDatabaseExplorerNode getDatabase() {
return this.database;
}
public void setDatabase( XulDatabaseExplorerNode aDatabase ) {
this.database = aDatabase;
}
public String getTable() {
if ( selectedNode != null && selectedNode.isTable() ) {
return selectedNode.getName();
}
return null;
}
public String getSchema() {
if ( selectedNode != null ) {
return selectedNode.getSchema();
}
return null;
}
/**
* Finds the node.
*
* @param aSchema
* can be null
* @param aName
* can be null
* @return node
*/
public DatabaseExplorerNode findBy( String aSchema, String aTable ) {
ListIterator<DatabaseExplorerNode> theNodes = this.database.listIterator();
return drillDown( theNodes, aSchema, aTable );
}
private DatabaseExplorerNode drillDown( ListIterator<DatabaseExplorerNode> aNodes, String aSchema, String aTable ) {
boolean lookingForSchema = aTable == null || Utils.isEmpty( aTable );
DatabaseExplorerNode theNode = null;
while ( aNodes.hasNext() ) {
theNode = aNodes.next();
if ( theNode != null ) {
if ( lookingForSchema && theNode.isSchema() && theNode.getName().equals( aSchema ) ) {
break;
} else if ( !lookingForSchema
&& theNode.isTable() && theNode.getName().equals( aTable )
&& ( theNode.getSchema() != null ? theNode.getSchema().equals( aSchema ) : aSchema == null ) ) {
break;
} else {
theNode = drillDown( theNode.listIterator(), aSchema, aTable );
if ( theNode != null ) {
break;
}
}
}
}
return theNode;
}
// TODO mlowery why is this subclass needed?
public static class XulDatabaseExplorerNode extends AbstractModelNode<DatabaseExplorerNode> {
private static final long serialVersionUID = 2466708563640027488L;
}
public DatabaseExplorerNode getSelectedNode() {
return selectedNode;
}
public void setSelectedNode( DatabaseExplorerNode selectedNode ) {
DatabaseExplorerNode prevVal = this.selectedNode;
this.selectedNode = selectedNode;
firePropertyChange( "selectedNode", prevVal, this.selectedNode );
}
}