Package org.pentaho.reporting.designer.core.actions.report

Source Code of org.pentaho.reporting.designer.core.actions.report.AddDataFactoryAction

/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2002-2013 Pentaho Corporation..  All rights reserved.
*/

package org.pentaho.reporting.designer.core.actions.report;

import java.awt.Cursor;
import java.awt.Window;
import java.awt.event.ActionEvent;
import java.util.Locale;
import javax.swing.Action;
import javax.swing.table.TableModel;

import org.pentaho.reporting.designer.core.actions.AbstractReportContextAction;
import org.pentaho.reporting.designer.core.actions.ActionMessages;
import org.pentaho.reporting.designer.core.editor.ReportDocumentContext;
import org.pentaho.reporting.designer.core.util.ReportDesignerDesignTimeContext;
import org.pentaho.reporting.designer.core.util.exceptions.UncaughtExceptionsModel;
import org.pentaho.reporting.designer.core.util.undo.AttributeEditUndoEntry;
import org.pentaho.reporting.designer.core.util.undo.DataSourceEditUndoEntry;
import org.pentaho.reporting.engine.classic.core.AbstractReportDefinition;
import org.pentaho.reporting.engine.classic.core.AttributeNames;
import org.pentaho.reporting.engine.classic.core.CompoundDataFactory;
import org.pentaho.reporting.engine.classic.core.DataFactory;
import org.pentaho.reporting.engine.classic.core.designtime.DataFactoryChange;
import org.pentaho.reporting.engine.classic.core.designtime.DataSourcePlugin;
import org.pentaho.reporting.engine.classic.core.designtime.DefaultDataFactoryChangeRecorder;
import org.pentaho.reporting.engine.classic.core.metadata.DataFactoryMetaData;
import org.pentaho.reporting.engine.classic.core.wizard.ContextAwareDataSchemaModel;
import org.pentaho.reporting.libraries.base.util.StringUtils;

public class AddDataFactoryAction extends AbstractReportContextAction
{
  private DataFactoryMetaData dataSourcePlugin;

  public AddDataFactoryAction(final DataFactoryMetaData dataSourcePlugin)
  {
    this.dataSourcePlugin = dataSourcePlugin;
    putValue(Action.NAME, dataSourcePlugin.getDisplayName(Locale.getDefault()));
    putValue(Action.SHORT_DESCRIPTION, dataSourcePlugin.getDescription(Locale.getDefault()));
  }

  /**
   * Invoked when an action occurs.
   */
  public void actionPerformed(final ActionEvent e)
  {
    final ReportDocumentContext activeContext = getActiveContext();
    if (activeContext == null)
    {
      return;
    }

    final DataSourcePlugin editor = dataSourcePlugin.createEditor();
    if (editor == null)
    {
      return;
    }

    final DefaultDataFactoryChangeRecorder recorder = new DefaultDataFactoryChangeRecorder();
    final ReportDesignerDesignTimeContext designTimeContext = new ReportDesignerDesignTimeContext(getReportDesignerContext());
    final DataFactory dataFactory = editor.performEdit(designTimeContext, null, null, recorder);
    if (dataFactory == null)
    {
      return;
    }

    final Window parentWindow = designTimeContext.getParentWindow();
    try
    {
      parentWindow.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));

      addDataFactory(activeContext, dataFactory, recorder.getChanges());
    }
    finally
    {
      final ContextAwareDataSchemaModel dataSchemaModel = activeContext.getReportDataSchemaModel();
      if (dataSchemaModel.getDataFactoryException() != null)
      {
        UncaughtExceptionsModel.getInstance().addException(dataSchemaModel.getDataFactoryException());
      }

      parentWindow.setCursor(Cursor.getDefaultCursor());
    }
  }

  public static void addDataFactory(final ReportDocumentContext activeContext,
                                    final DataFactory dataFactory,
                                    final DataFactoryChange[] dataFactoryChanges)
  {
    if (dataFactory == null)
    {
      throw new NullPointerException();
    }

    final AbstractReportDefinition report = activeContext.getReportDefinition();
    final DataFactory originalDataFactory = report.getDataFactory();
    if (originalDataFactory == null)
    {
      throw new IllegalStateException("A report in design-mode should have its data-factory normalized.");
    }

    final String queryAttribute = (String) report.getAttribute(AttributeNames.Internal.NAMESPACE, AttributeNames.Internal.QUERY);
    if (StringUtils.isEmpty(queryAttribute) && dataFactory.getQueryNames().length > 0)
    {
      final String queryName = dataFactory.getQueryNames()[0];
      report.setAttribute(AttributeNames.Internal.NAMESPACE, AttributeNames.Internal.QUERY, queryName);
      activeContext.getUndo().addChange(ActionMessages.getString("AddDataFactoryAction.SetQuery.UndoText"),
          new AttributeEditUndoEntry(report.getObjectID(),
              AttributeNames.Internal.NAMESPACE, AttributeNames.Internal.QUERY,
              queryAttribute, queryName));
    }


    if (isLegacyDefaultDataFactory(originalDataFactory))
    {
      final CompoundDataFactory compoundDataFactory = CompoundDataFactory.normalize(dataFactory);
      DefaultDataFactoryChangeRecorder.applyChanges(compoundDataFactory, dataFactoryChanges);
      report.setDataFactory(compoundDataFactory);
      activeContext.getUndo().addChange(ActionMessages.getString("AddDataFactoryAction.UndoText"),
          new DataSourceEditUndoEntry(0, null, dataFactory.derive()));
    }
    else
    {
      final CompoundDataFactory reportDf = CompoundDataFactory.normalize(originalDataFactory);
      DefaultDataFactoryChangeRecorder.applyChanges(reportDf, dataFactoryChanges);
      final int position = reportDf.size();
      reportDf.add(dataFactory);
      activeContext.getUndo().addChange(ActionMessages.getString("AddDataFactoryAction.UndoText"),
          new DataSourceEditUndoEntry(position, null, dataFactory.derive()));
      report.setDataFactory(reportDf);
    }
  }

  private static boolean isLegacyDefaultDataFactory(final DataFactory dataFactory)
  {
    final String[] queryNames = dataFactory.getQueryNames();
    if (queryNames.length == 0)
    {
      return true;
    }

    if (queryNames.length != 1)
    {
      return false;
    }
    if ("default".equals(queryNames[0]))
    {
      try
      {
        // check for legacy-built-in defaults and selectively ignore them ..
        final TableModel tableModel = dataFactory.queryData("default", null);
        if (tableModel.getRowCount() == 0 && tableModel.getColumnCount() == 0)
        {
          return true;
        }
      }
      catch (final Exception e)
      {
        return false;
      }
    }
    return false;
  }
}
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