Bug 151794 Integer data can't be retrieved in dynamic parameter
Steps to reproduce: 1.New a sample data source and a data set from table "CUSTOMERS" 2.New a dynamic parameter, choose data type "Integer" Expected result: Those integer data set columns are listed in "Select value column" Actual result: No column available
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
if ( refresh )
			{
				refreshValueTable( );
			}
		}
	}
	private boolean canBeBlank( )
	{
		boolean canBeBlank = false;
		if ( PARAM_CONTROL_LIST.equals( getSelectedControlType( ) )
				|| DesignChoiceConstants.PARAM_CONTROL_TEXT_BOX.equals( getSelectedControlType( ) ) )
		{
			if ( dirtyProperties.containsKey( CHECKBOX_ALLOW_BLANK ) )
			{
				canBeBlank = ( (Boolean) dirtyProperties.get( CHECKBOX_ALLOW_BLANK ) ).booleanValue( );
			}
			else
			{
				canBeBlank = inputParameter.allowBlank( );
			}
		}
		return canBeBlank;
	}
	private boolean canBeNull( )
	{
		boolean canBeNull = false;
		if ( PARAM_CONTROL_LIST.equals( getSelectedControlType( ) )
				|| DesignChoiceConstants.PARAM_CONTROL_TEXT_BOX.equals( getSelectedControlType( ) ) )
		{
			if ( dirtyProperties.containsKey( CHECKBOX_ALLOW_NULL ) )