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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.orcs.core.internal.relation.order;
import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map.Entry;
import java.util.StringTokenizer;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLOutputFactory;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;
import org.eclipse.osee.framework.core.data.IRelationType;
import org.eclipse.osee.framework.core.data.IRelationTypeSide;
import org.eclipse.osee.framework.core.data.TokenFactory;
import org.eclipse.osee.framework.core.enums.RelationSide;
import org.eclipse.osee.framework.core.enums.RelationSorter;
import org.eclipse.osee.framework.jdk.core.type.OseeCoreException;
import org.eclipse.osee.framework.jdk.core.util.Conditions;
import org.eclipse.osee.framework.jdk.core.util.Lib;
import org.eclipse.osee.framework.jdk.core.util.Strings;
import org.eclipse.osee.orcs.data.RelationTypes;
/**
* @author Roberto E. Escobar
*/
public class OrderParser {
private static final String ROOT_ELEMENT = "OrderList";
private static final String START_TAG = "Order";
private static final String RELATION_TYPE_TAG = "relType";
private static final String ORDER_TYPE_TAG = "orderType";
private static final String SIDE_TAG = "side";
private static final String LIST_TAG = "list";
private static final ThreadLocal<XMLInputFactory> inputFactory = new ThreadLocal<XMLInputFactory>() {
@Override
protected XMLInputFactory initialValue() {
return XMLInputFactory.newInstance();
}
};
private static final ThreadLocal<XMLOutputFactory> outputFactory = new ThreadLocal<XMLOutputFactory>() {
@Override
protected XMLOutputFactory initialValue() {
return XMLOutputFactory.newInstance();
}
};
private final RelationTypes relationCache;
public OrderParser(RelationTypes relationCache) {
this.relationCache = relationCache;
}
public void loadFromXml(HasOrderData hasOrderData, String rawData) throws OseeCoreException {
Conditions.checkNotNull(hasOrderData, "orderData");
if (Strings.isValid(rawData) && rawData.trim().length() > 0) {
Reader reader = new StringReader(rawData);
try {
XMLStreamReader streamReader = inputFactory.get().createXMLStreamReader(reader);
while (streamReader.hasNext()) {
process(streamReader, hasOrderData);
streamReader.next();
}
} catch (XMLStreamException ex) {
OseeCoreException.wrapAndThrow(ex);
} finally {
Lib.close(reader);
}
}
}
private void process(XMLStreamReader reader, HasOrderData hasOrderData) throws OseeCoreException {
int eventType = reader.getEventType();
switch (eventType) {
case XMLStreamConstants.START_ELEMENT:
String localName = reader.getLocalName();
String uri = reader.getNamespaceURI();
if (START_TAG.equals(localName)) {
final String relationTypeName = reader.getAttributeValue(uri, RELATION_TYPE_TAG);
String orderType = reader.getAttributeValue(uri, ORDER_TYPE_TAG);
String relationSide = reader.getAttributeValue(uri, SIDE_TAG);
String rawList = reader.getAttributeValue(uri, LIST_TAG);
if (relationTypeName != null && orderType != null && relationSide != null) {
List<String> list = Collections.emptyList();
if (rawList != null) {
list = new ArrayList<>();
StringTokenizer tokenizer = new StringTokenizer(rawList, ",");
while (tokenizer.hasMoreTokens()) {
list.add(tokenizer.nextToken());
}
}
// TODO don't store relation type by name - use type UUID
IRelationType type = Iterables.find(relationCache.getAll(), new Predicate<IRelationType>() {
@Override
public boolean apply(IRelationType type) {
return type.getName().equalsIgnoreCase(relationTypeName);
}
});
RelationSide side = RelationSide.fromString(relationSide);
IRelationTypeSide typeSide = TokenFactory.createRelationTypeSide(side, type.getId(), type.getName());
OrderData orderData = new OrderData(RelationSorter.valueOfGuid(orderType), list);
hasOrderData.add(typeSide, orderData);
}
}
break;
default:
break;
}
}
public String toXml(HasOrderData hasOrderData) throws OseeCoreException {
Conditions.checkNotNull(hasOrderData, "orderData");
StringWriter writer = new StringWriter();
XMLStreamWriter xmlWriter = null;
try {
xmlWriter = outputFactory.get().createXMLStreamWriter(writer);
xmlWriter.writeStartElement(ROOT_ELEMENT);
for (Entry<IRelationTypeSide, OrderData> entry : hasOrderData) {
writeEntry(xmlWriter, entry.getKey(), entry.getValue());
}
xmlWriter.writeEndElement();
xmlWriter.writeEndDocument();
} catch (XMLStreamException ex) {
OseeCoreException.wrapAndThrow(ex);
} finally {
if (xmlWriter != null) {
try {
xmlWriter.close();
} catch (XMLStreamException ex) {
OseeCoreException.wrapAndThrow(ex);
}
}
}
return writer.toString();
}
private void writeEntry(XMLStreamWriter xmlWriter, IRelationTypeSide typeAndSide, OrderData orderData) throws XMLStreamException {
xmlWriter.writeStartElement(START_TAG);
// TODO don't store relation type by name - use type UUID
xmlWriter.writeAttribute(RELATION_TYPE_TAG, typeAndSide.getName());
xmlWriter.writeAttribute(SIDE_TAG, typeAndSide.getSide().name());
xmlWriter.writeAttribute(ORDER_TYPE_TAG, orderData.getSorterId().getGuid());
List<String> guids = orderData.getOrderIds();
if (!guids.isEmpty()) {
xmlWriter.writeAttribute(LIST_TAG, org.eclipse.osee.framework.jdk.core.util.Collections.toString(",", guids));
}
xmlWriter.writeEndElement();
}
}
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