/* (non-Javadoc) * @see org.kie.reteoo.builder.ReteooComponentBuilder#build(org.kie.reteoo.builder.BuildContext, org.kie.reteoo.builder.BuildUtils, org.kie.rule.RuleConditionElement) */ public void build( final BuildContext context, final BuildUtils utils, final RuleConditionElement rce) { final From from = (From) rce; context.pushRuleComponent(from); @SuppressWarnings("unchecked") BetaConstraints betaConstraints = utils.createBetaNodeConstraint( context, (List<BetaNodeFieldConstraint>) context.getBetaconstraints(), true); context.setTupleSource( (LeftTupleSource) utils.attachNode( context, context .getComponentFactory() .getNodeFactoryService() .buildFromNode( context.getNextId(), from.getDataProvider(), context.getTupleSource(), context .getAlphaConstraints() .toArray( new AlphaNodeFieldConstraint[context.getAlphaConstraints().size()]), betaConstraints, context.isTupleMemoryEnabled(), context, from))); context.setAlphaConstraints(null); context.setBetaconstraints(null); context.popRuleComponent(); }
private void attachPattern( final BuildContext context, final BuildUtils utils, final Pattern pattern) throws InvalidPatternException { // Set pattern offset to the appropriate value pattern.setOffset(context.getCurrentPatternOffset()); final List<Constraint> alphaConstraints = new LinkedList<Constraint>(); final List<Constraint> betaConstraints = new LinkedList<Constraint>(); final List<Behavior> behaviors = new LinkedList<Behavior>(); this.createConstraints(context, utils, pattern, alphaConstraints, betaConstraints); // Create BetaConstraints object context.setBetaconstraints(betaConstraints); // set behaviors list behaviors.addAll(pattern.getBehaviors()); context.setBehaviors(behaviors); if (pattern.getSource() != null) { context.setAlphaConstraints(alphaConstraints); final int currentOffset = context.getCurrentPatternOffset(); PatternSource source = pattern.getSource(); ReteooComponentBuilder builder = utils.getBuilderFor(source); builder.build(context, utils, source); // restoring offset context.setCurrentPatternOffset(currentOffset); } if (pattern.getSource() == null || context.getCurrentEntryPoint() != EntryPoint.DEFAULT) { attachAlphaNodes(context, utils, pattern, alphaConstraints); if (context.getCurrentEntryPoint() != EntryPoint.DEFAULT) { context.setObjectSource( (ObjectSource) utils.attachNode( context, new PropagationQueuingNode( context.getNextId(), context.getObjectSource(), context))); // the entry-point specific network nodes are attached, so, set context to default // entry-point context.setCurrentEntryPoint(EntryPoint.DEFAULT); } } // last thing to do is increment the offset, since if the pattern has a source, // offset must be overriden context.incrementCurrentPatternOffset(); }