Bug 195122 NPE throws out when click import value in list type dynamic parameter[0705]
Description: NPE throws out when click import value in list type dynamic parameter[0705] Build number: 2.2.0.v20070702-0630 Steps to reproduce: 1, New a dataset with no resultset 2, New a report parameter 3, Select List Box as display type 4, In static, click Import Values Expected result: No value can be imported or tell the user that no value in resultset Actual result: NPE Throws out Error log: org.eclipse.birt.report.designer.core.runtime.GUIException: Caused by java.lang.NullPointerException. at org.eclipse.birt.report.designer.core.runtime.GUIException.createGUIException(GUIException.java:76) at org.eclipse.birt.report.designer.internal.ui.util.ExceptionHandler.handle(ExceptionHandler.java:135) at org.eclipse.birt.report.designer.internal.ui.util.ExceptionHandler.handle(ExceptionHandler.java:117) at org.eclipse.birt.report.designer.internal.ui.dialogs.ImportValueDialog.refreshValues(ImportValueDialog.java:555) at org.eclipse.birt.report.designer.internal.ui.dialogs.ImportValueDialog.refreshColumns(ImportValueDialog.java:449)
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/DataUtil.java
{
	/**
	 * Gets the columns list from the data set
	 * 
	 * @param handle
	 *            the handle of the data set
	 * @return the list of the columns
	 * @throws SemanticException
	 */
	public static List getColumnList( DataSetHandle handle )
			throws SemanticException
	{
		List result = new ArrayList( );
		if ( handle != null )
		{
			CachedMetaDataHandle meta = handle.getCachedMetaDataHandle( );
			if ( meta == null )
			{
				DataSetUIUtil.updateColumnCache( handle );
				meta = handle.getCachedMetaDataHandle( );
			}
			MemberHandle resultSet = meta.getResultSet( );
			if ( resultSet.getListValue( ) != null )
			{
				for ( int i = 0; i < resultSet.getListValue( ).size( ); i++ )