/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.jackrabbit.commons.webdav;
import org.apache.jackrabbit.util.XMLUtil;
import org.apache.jackrabbit.value.ValueHelper;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Text;
import javax.jcr.PropertyType;
import javax.jcr.RepositoryException;
import javax.jcr.Value;
import javax.jcr.ValueFactory;
import javax.jcr.ValueFormatException;
import java.util.ArrayList;
import java.util.List;
/**
* <code>ValuesUtil</code>...
*/
public class ValueUtil {
public static Element valueToXml(Value jcrValue, Document document) throws RepositoryException {
String type = PropertyType.nameFromValue(jcrValue.getType());
String serializedValue = ValueHelper.serialize(jcrValue, true);
Element xmlValue = document.createElementNS(JcrRemotingConstants.NS_URI, JcrRemotingConstants.NS_PREFIX + ":" + JcrRemotingConstants.XML_VALUE);
Text txt = document.createTextNode(serializedValue);
xmlValue.appendChild(txt);
Attr attr = document.createAttributeNS(JcrRemotingConstants.NS_URI, JcrRemotingConstants.NS_PREFIX + ":" + JcrRemotingConstants.ATTR_VALUE_TYPE);
attr.setValue(type);
xmlValue.setAttributeNodeNS(attr);
return xmlValue;
}
public static Value[] valuesFromXml(Object propValue, int defaultType, ValueFactory valueFactory) throws RepositoryException {
Value[] jcrValues;
// retrieve jcr-values from child 'value'-element(s)
List<Element> valueElements = new ArrayList<Element>();
if (propValue == null) {
jcrValues = new Value[0];
} else { /* not null propValue */
if (isValueElement(propValue)) {
valueElements.add((Element) propValue);
} else if (propValue instanceof List) {
for (Object el : ((List<?>) propValue)) {
/* make sure, only Elements with name 'value' are used for
* the 'value' field. any other content (other elements, text,
* comment etc.) is ignored. NO bad-request/conflict error is
* thrown.
*/
if (isValueElement(el)) {
valueElements.add((Element) el);
}
}
}
/* fill the 'value' with the valid 'value' elements found before */
jcrValues = new Value[valueElements.size()];
int i = 0;
for (Element element : valueElements) {
jcrValues[i] = getJcrValue(element, defaultType, valueFactory);
i++;
}
}
return jcrValues;
}
private static boolean isValueElement(Object obj) {
return obj instanceof Element && JcrRemotingConstants.XML_VALUE.equals(((Element)obj).getLocalName());
}
/**
*
* @param valueElement
* @param defaultType
* @return
* @throws javax.jcr.ValueFormatException
* @throws javax.jcr.RepositoryException
*/
private static Value getJcrValue(Element valueElement, int defaultType,
ValueFactory valueFactory)
throws ValueFormatException, RepositoryException {
if (valueElement == null) {
return null;
}
// make sure the value is never 'null'
String value = XMLUtil.getText(valueElement, "");
String typeStr = XMLUtil.getAttribute(valueElement, JcrRemotingConstants.ATTR_VALUE_TYPE, JcrRemotingConstants.NS_URI);
int type = (typeStr == null) ? defaultType : PropertyType.valueFromName(typeStr);
// deserialize value ->> see #valueToXml where values are serialized
return ValueHelper.deserialize(value, type, true, valueFactory);
}
}