/*
* Copyright 2010 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.core.reteoo.builder;
import org.drools.core.reteoo.LeftTupleSource;
import org.drools.core.reteoo.RuleTerminalNode.SortDeclarations;
import org.drools.core.rule.Declaration;
import org.drools.core.rule.RuleConditionElement;
import org.drools.core.time.impl.DurationTimer;
import org.drools.core.time.impl.ExpressionIntervalTimer;
import org.drools.core.time.impl.Timer;
import java.util.Arrays;
import java.util.Map;
public class TimerBuilder
implements
ReteooComponentBuilder {
public void build(final BuildContext context,
final BuildUtils utils,
final RuleConditionElement rce) {
final Timer timer = (Timer) rce;
context.pushRuleComponent( timer );
Declaration[][] declrs = null;
if ( timer instanceof ExpressionIntervalTimer ) {
Map<String, Declaration> outerDeclrs = context.getSubRule().getOuterDeclarations();
ExpressionIntervalTimer exprTimer = ( ExpressionIntervalTimer ) timer;
Declaration[] delayDeclrs = exprTimer.getDelayMVELCompilationUnit().getPreviousDeclarations();
Declaration[] periodDeclrs = exprTimer.getPeriodMVELCompilationUnit().getPreviousDeclarations();
delayDeclrs = Arrays.copyOf(delayDeclrs, delayDeclrs.length); // make copies as originals must not be changed
periodDeclrs = Arrays.copyOf(periodDeclrs, delayDeclrs.length); // make copies as originals must not be changed
for ( int i = 0; i < delayDeclrs.length; i++ ) {
delayDeclrs[i] = outerDeclrs.get( delayDeclrs[i].getIdentifier() );
}
Arrays.sort(delayDeclrs, SortDeclarations.instance);
for ( int i = 0; i < periodDeclrs.length; i++ ) {
periodDeclrs[i] = outerDeclrs.get( periodDeclrs[i].getIdentifier() );
}
Arrays.sort(periodDeclrs, SortDeclarations.instance);
declrs = new Declaration[][] { delayDeclrs, periodDeclrs };
} else if ( timer instanceof DurationTimer ) {
DurationTimer durTimer = ( DurationTimer ) timer;
declrs = new Declaration[][] { new Declaration[] {durTimer.getEventFactHandleDeclaration()}, null};
}
context.setTupleSource( (LeftTupleSource) utils.attachNode( context,
context.getComponentFactory().getNodeFactoryService().buildTimerNode( context.getNextId(),
timer,
context.getRule().getCalendars(),
declrs,
context.getTupleSource(),
context ) ) );
context.setAlphaConstraints( null );
context.setBetaconstraints( null );
context.popRuleComponent();
}
public boolean requiresLeftActivation(final BuildUtils utils,
final RuleConditionElement rce) {
return true;
}
}