Bug 147652 Inconsistent behaviors when preview in web viewer and html/pdf using attached design file
Description: Use a nonexisted binding column as sort key will cause web viewer preview fail Steps to reproduce: 1. Insert a table, generate binding 2. use one binding as sort key to add a sorting on table 3. Delete the sort key in bindig pane 4. Preview in web viewer Expected result: Table header and master page can display and return error msg Actual result: Nothing displays in web viewer
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/document/QueryResults.java
{	
	
	private DataEngineContext context;
	private String queryResultID;
	
	
	private IResultIterator resultIterator;
	private IResultMetaData resultMetaData;
	
	
	private String subQueryName;
	
	
	private int currParentIndex;
	
	/**
	 * @param context
	 * @param queryResultID
	 */
	public QueryResults( DataEngineContext context, String queryResultID )
	{