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/*******************************************************************************
* Copyright (c) 2004, 2007 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.framework.core.dsl.integration.internal;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.osee.framework.core.dsl.integration.ArtifactDataProvider.ArtifactProxy;
import org.eclipse.osee.framework.core.dsl.oseeDsl.CompareOp;
import org.eclipse.osee.framework.core.dsl.oseeDsl.CompoundCondition;
import org.eclipse.osee.framework.core.dsl.oseeDsl.Condition;
import org.eclipse.osee.framework.core.dsl.oseeDsl.MatchField;
import org.eclipse.osee.framework.core.dsl.oseeDsl.SimpleCondition;
import org.eclipse.osee.framework.core.dsl.oseeDsl.XArtifactMatcher;
import org.eclipse.osee.framework.core.dsl.oseeDsl.XLogicOperator;
import org.eclipse.osee.framework.core.exception.OseeArgumentException;
import org.eclipse.osee.framework.core.exception.OseeCoreException;
import org.eclipse.osee.framework.core.util.Conditions;
import org.eclipse.osee.framework.jdk.core.util.GUID;
import org.eclipse.osee.framework.jdk.core.util.Strings;
/**
* @author Roberto E. Escobar
*/
public class ArtifactMatchInterpreter {
public boolean matches(XArtifactMatcher matcher, Collection<ArtifactProxy> proxies) throws OseeCoreException {
boolean matched = false;
Iterator<ArtifactProxy> iterator = proxies.iterator();
while (iterator.hasNext() && !matched) {
matched = matches(matcher, iterator.next());
if (matched) {
break;
}
}
return matched;
}
public boolean matches(XArtifactMatcher matcher, ArtifactProxy proxy) throws OseeCoreException {
List<Condition> conditions = matcher.getConditions();
List<XLogicOperator> operators = matcher.getOperators();
return evaluate(conditions, operators, proxy);
}
boolean evaluate(List<? extends Condition> conditions, List<? extends XLogicOperator> operators, ArtifactProxy proxy) throws OseeCoreException {
boolean result = false;
Iterator<? extends Condition> iteratorConds = conditions.iterator();
Iterator<? extends XLogicOperator> iteratorOps = operators.iterator();
if (iteratorConds.hasNext()) {
Condition lastCondition = iteratorConds.next();
if (iteratorOps.hasNext()) {
while (iteratorOps.hasNext() && iteratorConds.hasNext()) {
XLogicOperator op = iteratorOps.next();
Condition condition = iteratorConds.next();
result = evaluate(op, lastCondition, condition, proxy);
}
} else {
result = evaluate(lastCondition, proxy);
}
}
return result;
}
boolean evaluate(XLogicOperator op, Condition conditionA, Condition conditionB, ArtifactProxy proxy) throws OseeCoreException {
boolean result = evaluate(conditionA, proxy);
if (op == XLogicOperator.AND) {
return result && evaluate(conditionB, proxy);
} else if (op == XLogicOperator.OR) {
return result || evaluate(conditionB, proxy);
}
throw new OseeArgumentException("Invalid op defined: %s", op);
}
boolean evaluate(Condition condition, ArtifactProxy proxy) throws OseeCoreException {
if (condition instanceof SimpleCondition) {
return evaluate((SimpleCondition) condition, proxy);
} else if (condition instanceof CompoundCondition) {
CompoundCondition group = (CompoundCondition) condition;
return evaluate(group.getConditions(), group.getOperators(), proxy);
}
throw new OseeArgumentException("Invalid Condition defined: %s", condition);
}
boolean evaluate(SimpleCondition condition, ArtifactProxy proxy) throws OseeCoreException {
String expression = Strings.unquote(condition.getExpression());
Conditions.checkNotNullOrEmpty(expression, "expression");
String input = null;
MatchField field = condition.getField();
switch (field) {
case ARTIFACT_GUID:
input = proxy.getGuid();
Conditions.checkExpressionFailOnTrue(!GUID.isValid(input), "guid");
break;
case BRANCH_GUID:
input = proxy.getBranch().getGuid();
Conditions.checkExpressionFailOnTrue(!GUID.isValid(input), "guid");
break;
case ARTIFACT_NAME:
input = proxy.getName();
break;
case BRANCH_NAME:
input = proxy.getBranch().getName();
break;
default:
throw new OseeArgumentException("Invalid field [%s]", field);
}
Conditions.checkNotNullOrEmpty(input, field.getName());
CompareOp op = condition.getOp();
boolean result = false;
if (op == CompareOp.EQ) {
result = input.equals(expression);
} else if (op == CompareOp.LIKE) {
Matcher matcher = expressions.get(expression);
if (matcher == null) {
Pattern pattern = Pattern.compile(expression);
matcher = pattern.matcher("");
expressions.put(expression, matcher);
}
synchronized (matcher) {
matcher.reset(input);
result = matcher.find();
}
} else {
throw new OseeArgumentException("Invalid CompareOp [%s]", op);
}
return result;
}
private final Map<String, Matcher> expressions = new ConcurrentHashMap<String, Matcher>();
}
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