Bug 185898 ReportItemHandle needs to add two method: getAvailableDataBindingReferenceList and getDataBindingType.
ReportItemHandle needs to add two method: getAvailableDataBindingReferenceList and getDataBindingType. The first method provider the available ReportItem list of DataBindingReference. The second method provider the type of the DataBinding.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ReportItemHandle.java
/**
	 * Returns the script executed when the element is prepared for rendering in
	 * the Presentation engine.
	 * 
	 * @return the script that executes
	 */
	public String getOnRender( )
	{
		return getStringProperty( IReportItemModel.ON_RENDER_METHOD );
	}
	/**
	 * Sets the script executed when the element is prepared for rendering in
	 * the Presentation engine.
	 * 
	 * @param value
	 *            the script to set
	 * @throws SemanticException
	 *             if the property is locked.
	 */
	public void setOnRender( String value ) throws SemanticException
	{
		setProperty( IReportItemModel.ON_RENDER_METHOD, value );
	}
	/**
	 * Returns the iterator for parameter binding list defined on this report
	 * item. The element in the iterator is the corresponding
	 * <code>StructureHandle</code> that deal with a <code>ParamBinding</code>
	 * in the list.
	 * 
	 * @return the iterator for parameter binding structure list defined on this