Bug 148626 [Regression]Can't fetch value from the filter of table/chart which inherites data from container
Steps: 1. create a table and bind a dataset in it 2. create another table/chart in the table detail/table group header 3. switch to the Filter tab in property editor 4. create a filter and select value in "<select value...>" combo 5. an error popuped up, "The expression value can't be retrieved"
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ReportDataServiceProvider.java
/*******************************************************************************
 * Copyright (c) 2004 Actuate Corporation.
 * 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:
 *  Actuate Corporation  - initial API and implementation
 *******************************************************************************/
package org.eclipse.birt.chart.reportitem.ui;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;
import org.eclipse.birt.chart.exception.ChartException;
import org.eclipse.birt.chart.model.attribute.DataType;
import org.eclipse.birt.chart.reportitem.ui.dialogs.ExtendedItemFilterDialog;
import org.eclipse.birt.chart.reportitem.ui.dialogs.ReportItemParametersDialog;
import org.eclipse.birt.chart.ui.swt.interfaces.IDataServiceProvider;
import org.eclipse.birt.chart.ui.swt.wizard.ChartWizard;
import org.eclipse.birt.chart.ui.util.ChartHelpContextIds;
import org.eclipse.birt.chart.ui.util.ChartUIUtil;