Bug 213824 The data fetch setting in dataset(row limit number) isn't effect.
Steps To Reproduce: Please refer to issue #210606, the data fetch setting in dataset isn't effect. Thanks.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/executor/DataSetCacheManager.java
*/
	private String tempDir;
	/**
	 * Construction
	 */
	public DataSetCacheManager( String tempDir, DataEngine dataEngine )
	{
		this.tempDir = tempDir;
		this.dataSourceDesign = null;
		this.dataSetDesign = null;
		this.cacheOption = DataEngineContext.CACHE_USE_DEFAULT;
		this.alwaysCacheRowCount = 0;
		this.JVMLevelCacheMapManager = new CacheMapManager( tempDir, true );
		this.DteLevelCacheMapManager = new CacheMapManager( tempDir, false );
		this.mode = DataEngineContext.CACHE_MODE_IN_DISK;
	}
	/**
	 * 
	 * @return
	 */
	public IBaseDataSourceDesign getCurrentDataSourceDesign( )
	{
		return this.dataSourceDesign;
	}
	
	/**
	 * 
	 * @return
	 */
	public IBaseDataSetDesign getCurrentDataSetDesign()