Bug 180608 [Regression]NPE throws out when preview the result in dataset[07]
Description: [Regression]NPE throws out when preview the result in dataset[07] Build number: 2.2.0.v20070403-0630 Steps to reproduce: 1, Use attached report 2, Edit Data Set 3, Preview the Data Set Expected result: The preview should be success Actual result: NPE throws out Error log:
data/org.eclipse.birt.data.tests/test/org/eclipse/birt/data/engine/binding/FeaturesTest.java
}
	/**
	 * Test "FetchRowLimit" feature. The fetch row limit is the number of rows
	 * that a data set can fetch from data source. In this test case the limit
	 * is set to zero, which indicate no limit at all.
	 * 
	 * @throws Exception
	 */
	public void testFetchRowLimit1( ) throws Exception
	{
		this.fetchRowLimit( 0 );
	}
	/**
	 * Test "FetchRowLimit" feature. The fetch row limit is the number of rows
	 * that a data set can fetch from data source. In this test case the limit
	 * is set to 3, which indicate to max three rows should be fetched from data
	 * source.
	 * 
	 * @throws Exception
	 */
	public void testFetchRowLimit2( ) throws Exception
	{
		this.fetchRowLimit( 3 );
	}
	/**
	 * Test "FetchRowLimit" feature. The fetch row limit is the number of rows
	 * that a data set can fetch from data source. In this test case the limit
	 * is set to negative number, which indicate no limit at all.
	 *