return getInterpolationVariables().size() - 1;
}
private Map<InterpolationVariable, Integer> getInterpolationVariables() {
Map<InterpolationVariable, Integer> result = new HashMap<InterpolationVariable, Integer>();
new RuleModelVisitor( result ).visit( this );
InterpolationVariable id = new InterpolationVariable( ID_COLUMN_NAME,
DataType.TYPE_NUMERIC_LONG );
result.put( id,
result.size() );