Bug 186502 Support more dateTimeLevelType for cube
Model has added more dateTimeLevelType on cube definition. Current available types are: year, quarter, month, week-of-month, week-of-year, day-of-week, day-of-month, day-of-year, hour, minute, second. This need Dte to provide corresponding support as well.
data/org.eclipse.birt.report.data.adapter/src/org/eclipse/birt/report/data/adapter/impl/DataSetIterator.java
* @see org.eclipse.birt.data.engine.olap.api.cube.IDatasetIterator#getFieldIndex(java.lang.String)
	 */
	public int getFieldIndex( String name ) throws BirtException
	{
		return this.metadata.getFieldIndex( name );
	}
	/*
	 * (non-Javadoc)
	 * @see org.eclipse.birt.data.engine.olap.api.cube.IDatasetIterator#getFieldType(java.lang.String)
	 */
	public int getFieldType( String name ) throws BirtException
	{
		return this.metadata.getFieldType( name );
	}
	/*
	 * (non-Javadoc)
	 * @see org.eclipse.birt.data.engine.olap.api.cube.IDatasetIterator#getValue(int)
	 */
	public Object getValue( int fieldIndex ) throws BirtException
	{
		Object value = it.getValue( this.metadata.getFieldName( fieldIndex ) );
		if ( value == null )
		{
			return this.metadata.getNullValueReplacer( fieldIndex );
		} 
		
		return  this.metadata.getDataProcessor( fieldIndex ).process( value );
	}
	/*
	 * (non-Javadoc)