package net.sourceforge.squirrel_sql.client.session.mainpanel.objecttree.tabs;
/*
* Copyright (C) 2001-2002 Colin Bell
* colbell@users.sourceforge.net
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
import java.awt.Component;
import net.sourceforge.squirrel_sql.fw.datasetviewer.DataSetException;
import net.sourceforge.squirrel_sql.fw.datasetviewer.DataSetScrollingPanel;
import net.sourceforge.squirrel_sql.fw.datasetviewer.IDataSet;
import net.sourceforge.squirrel_sql.fw.datasetviewer.IDataSetUpdateableModel;
import net.sourceforge.squirrel_sql.fw.util.log.ILogger;
import net.sourceforge.squirrel_sql.fw.util.log.LoggerController;
import net.sourceforge.squirrel_sql.client.session.ISession;
public abstract class BaseDataSetTab extends BaseObjectTab
{
/** Logger for this class. */
private static final ILogger s_log =
LoggerController.createLogger(BaseDataSetTab.class);
/** Component to display in tab. */
private DataSetScrollingPanel _comp;
public BaseDataSetTab()
{
super();
}
/**
* Return the component to be displayed in the panel.
*
* @return The component to be displayed in the panel.
*/
public synchronized Component getComponent()
{
if (_comp == null)
{
try
{
/*
* If the object representing the actual data (i.e. this object)
* can be edited by the user, then the fw objects need to have
* a reference to it. Updateable objects must implement an
* interface derived from IDataSetUpdateableComponent in the
* net.sourceforge.squirrel_sql.fw.datasetviewer package.
* If the component does not implement that interface,
* then we just keep going, but if it does implement it,
* then we need to tell the DataSetScrollingPanel that the
* object that fw needs to call is this one.
*/
IDataSetUpdateableModel modelReference = null; // default is no reference
try
{
// we need the try/catch just to keep the compiler happy
if (Class.forName("net.sourceforge.squirrel_sql.fw.datasetviewer.IDataSetUpdateableModel").isAssignableFrom(this.getClass()))
{
modelReference = ((IDataSetUpdateableModel)this);
}
}
catch (Exception ignore)
{
// any errors here result in an un-editable table, which
// should be no problem
}
_comp = new DataSetScrollingPanel(getDestinationClassName(), modelReference);
}
catch (Exception ex)
{
s_log.error("Error", ex);
}
}
return _comp;
}
/**
* Rebuild the tab. This usually means that some kind of configuration
* data has changed (I.E. the output type has changed from text to table).
*/
public void rebuild()
{
super.rebuild();
_comp = null;
}
/**
* @see BaseObjectPanelTab#clear()
*/
public void clear()
{
((DataSetScrollingPanel)getComponent()).clear();
}
/**
* Refresh the component displaying the database object.
*/
public synchronized void refreshComponent() throws DataSetException
{
ISession session = getSession();
if (session == null)
{
throw new IllegalStateException("Null ISession");
}
super._app.getThreadPool().addTask(new Runnable() {
public void run() {
try {
((DataSetScrollingPanel)getComponent()).load(createDataSet());
} catch (DataSetException e) {
s_log.error("", e);
}
}
});
}
protected abstract IDataSet createDataSet() throws DataSetException;
protected String getDestinationClassName()
{
return getSession().getProperties().getMetaDataOutputClassName();
}
}