Bug 177091 Can't access stored procedure defined in Oracle Package
1.setup an oracle connection 2.try to call a stored procedure defined in package
data/org.eclipse.birt.report.data.oda.jdbc.ui/src/org/eclipse/birt/report/data/oda/jdbc/ui/editors/SQLDataSetEditorPage.java
IStructuredSelection selection = (IStructuredSelection) filterComboViewer.getSelection( );
		String type = DbType.ALL_STRING;
		if ( selection != null && selection.getFirstElement( ) != null )
		{
			DbType dbType = (DbType) selection.getFirstElement( );
			switch ( dbType.getType( ) )
			{
				case DbType.TABLE_TYPE :
					type = DbType.TABLE_STRING;
					break;
				case DbType.VIEW_TYPE :
					type = DbType.VIEW_STRING;
					break;
				case DbType.PROCEDURE_TYPE :
					type = DbType.PROCEDURE_STRING;
					break;
			}
		}
		return type;
	}
	/**
	 * @param item A tree Item which has to be tested
	 * @return if the TreeItem represents a Schema node
	 */
	protected boolean isSchemaNode( TreeItem item )
	{
		if ( item != null && isSchemaSupported )
		{
			if ( item.getParentItem( ) == rootNode )
			{