Bug 124444 Preview attached file in pdf will display nothing.
Description: Preview attached file in pdf will display nothing. Steps to reproduce: 1. Preview attached design file in pdf Expected result: Report content shows Actual result: Wait for 10 minutes but nothing showed at all
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/data/dte/AbstractDataEngine.java
{
		private static final long serialVersionUID = 42L;
		public String parentRSID = null;
		public String rowid = null;
		public String resultSetID = null;
		public String queryId = null;
		public Key( String parentid, String rid, String queryId, String resultID )
		{
			parentRSID = parentid;
			rowid = rid;
			resultSetID = resultID;
			this.queryId = queryId;
		}
		public boolean equalTo( String parentID, String rid, String qId )
		{
			if ( parentRSID.equals( parentID ) && rowid.equals( rid )
					&& queryId.equals( qId ) )
			{
				return true;
			}
			return false;
		}
	}
	protected class QueryID implements Serializable
	{