Bug 166167 ODA IResultSet.close never been called in DtE
In DtE, we will close IConnection and IQuery from ODA, however the IResultSet.close() has never be called so that it is possible that even the ODA connection is closed the IResultSet is still open(If it is not closed when the IQuery or IConnection is closed). This is incorrect and needs a fix.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/executor/DataSourceQuery.java
/*
	 * @see org.eclipse.birt.data.engine.odi.IPreparedDSQuery#getResultClass()
	 */
    public IResultClass getResultClass() 
    {
         
        
        return resultMetadata;
    }
    /*
     * @see org.eclipse.birt.data.engine.odi.IPreparedDSQuery#getParameterMetaData()
     */
    public Collection getParameterMetaData()
			throws DataException
	{
        if ( odaStatement == null )
			throw new DataException( ResourceConstants.QUERY_HAS_NOT_PREPARED );
        
        Collection odaParamsInfo = odaStatement.getParameterMetaData();
        if ( odaParamsInfo == null || odaParamsInfo.isEmpty() )
            return null;
        
        
        
        ArrayList paramMetaDataList = new ArrayList( odaParamsInfo.size() );
        Iterator odaParamMDIter = odaParamsInfo.iterator();
        while ( odaParamMDIter.hasNext() )
        {
            org.eclipse.birt.data.engine.odaconsumer.ParameterMetaData odaMetaData =