/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.query.optimizer.xml;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.teiid.api.exception.query.QueryMetadataException;
import org.teiid.api.exception.query.QueryPlannerException;
import org.teiid.core.TeiidComponentException;
import org.teiid.core.TeiidRuntimeException;
import org.teiid.query.mapping.xml.MappingCriteriaNode;
import org.teiid.query.mapping.xml.MappingDocument;
import org.teiid.query.mapping.xml.MappingRecursiveElement;
import org.teiid.query.mapping.xml.MappingVisitor;
import org.teiid.query.mapping.xml.Navigator;
import org.teiid.query.parser.QueryParser;
import org.teiid.query.resolver.util.ResolverVisitor;
import org.teiid.query.sql.lang.Criteria;
import org.teiid.query.sql.symbol.GroupSymbol;
import org.teiid.query.sql.visitor.GroupsUsedByElementsVisitor;
import org.teiid.query.sql.visitor.StaticSymbolMappingVisitor;
/**
* Validate the criteria specified on the elements.
*/
public class ValidateMappedCriteriaVisitor extends MappingVisitor {
XMLPlannerEnvironment planEnv;
public ValidateMappedCriteriaVisitor( XMLPlannerEnvironment planEnv) {
this.planEnv = planEnv;
}
public void visit(MappingCriteriaNode element) {
String criteriaStr = element.getCriteria();
Map symbolMap = element.getSourceNode().buildFullSymbolMap();
Criteria criteria = resolveCriteria(criteriaStr, symbolMap);
if (criteria != null) {
List groupNames = getCriteriaGroups(criteria);
element.setCriteriaNode(criteria);
element.setGroupsInCriteria(groupNames);
}
}
public void visit(MappingRecursiveElement element) {
String criteriaStr = element.getCriteria();
Map symbolMap = element.getSourceNode().buildFullSymbolMap();
Criteria criteria = resolveCriteria(criteriaStr, symbolMap);
if (criteria != null) {
List groupNames = getCriteriaGroups(criteria);
element.setCriteriaNode(criteria);
element.setGroupsInCriteria(groupNames);
}
}
Criteria resolveCriteria(String criteriaString, Map symbolMap) {
if (criteriaString != null && criteriaString.length() > 0) {
try {
Criteria crit = QueryParser.getQueryParser().parseCriteria(criteriaString);
StaticSymbolMappingVisitor.mapSymbols(crit, symbolMap);
ResolverVisitor.resolveLanguageObject(crit, null, planEnv.getGlobalMetadata());
return crit;
} catch (Exception e) {
throw new TeiidRuntimeException(e);
}
}
return null;
}
private static List getCriteriaGroups(Criteria criteria) {
Collection criteriaGroups = GroupsUsedByElementsVisitor.getGroups(criteria);
List names = new ArrayList(criteriaGroups.size());
Iterator iter = criteriaGroups.iterator();
while(iter.hasNext()) {
names.add( ((GroupSymbol)iter.next()).getName().toUpperCase() );
}
return names;
}
public static void validateAndCollectCriteriaElements(MappingDocument doc, XMLPlannerEnvironment planEnv)
throws QueryPlannerException, QueryMetadataException, TeiidComponentException {
try {
ValidateMappedCriteriaVisitor visitor = new ValidateMappedCriteriaVisitor(planEnv);
doc.acceptVisitor(new Navigator(true, visitor));
} catch (TeiidRuntimeException e) {
if (e.getCause() instanceof QueryPlannerException) {
throw (QueryPlannerException)e.getCause();
}
else if (e.getCause() instanceof QueryMetadataException) {
throw (QueryMetadataException)e.getCause();
}
else if (e.getCause() instanceof TeiidComponentException) {
throw (TeiidComponentException)e.getCause();
}
throw e;
}
}
}