1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.mapping.rule;
14 import gnu.trove.map.hash.TObjectIntHashMap;
16 import org.simantics.db.Resource;
17 import org.simantics.mapping.constraint.IConstraint;
18 import org.simantics.mapping.constraint.TooManyUnboundVariablesException;
19 import org.simantics.mapping.constraint.instructions.IInstruction;
20 import org.simantics.mapping.rule.instructions.IRuleInstruction;
21 import org.simantics.mapping.rule.instructions.UnlessRuleInstruction;
22 import org.simantics.utils.datastructures.persistent.ImmutableSet;
24 public class UnlessRule implements IRule {
26 IConstraint condition;
29 public UnlessRule(IConstraint condition, IRule rule) {
30 this.condition = condition;
35 public ImmutableSet<Resource> binds() {
36 return condition.binds().addAll(rule.binds());
40 public IRuleInstruction createInstruction(
41 TObjectIntHashMap<Resource> variableIds,
42 ImmutableSet<Resource> bound) throws TooManyUnboundVariablesException {
43 IInstruction conditionInstruction =
44 condition.createInstruction(variableIds, bound);
45 bound = bound.addAll(condition.binds());
46 return new UnlessRuleInstruction(conditionInstruction,
47 rule.createInstruction(variableIds, bound));