Java XMLStreamReader getXSIType(XMLStreamReader reader)

Description

Returns the value of xsi:type attribute

License

Apache License

Parameter

Parameter	Description
reader	The XML stream reader

Return

The QName of the type, if the attribute is not present, null is returned.

Declaration

public static QName getXSIType(XMLStreamReader reader) 

Method Source Code

//package com.java2s;
/*/* ww w  .  jav a  2  s.  c  o m*/
 * 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.    
 */

import javax.xml.XMLConstants;
import javax.xml.namespace.QName;

import javax.xml.stream.XMLStreamReader;

public class Main {
    /**
     * Returns the value of xsi:type attribute
     * @param reader The XML stream reader
     * @return The QName of the type, if the attribute is not present, null is
     *         returned.
     */
    public static QName getXSIType(XMLStreamReader reader) {
        String qname = reader.getAttributeValue(XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI, "type");
        return getValueAsQName(reader, qname);
    }

    /**
     * Returns a QName from a string.
     * @param reader
     * @param value
     * @return
     */
    public static QName getValueAsQName(XMLStreamReader reader, String value) {
        if (value != null) {
            int index = value.indexOf(':');
            String prefix = index == -1 ? "" : value.substring(0, index);
            String localName = index == -1 ? value : value.substring(index + 1);
            String ns = reader.getNamespaceContext().getNamespaceURI(prefix);
            if (ns == null) {
                ns = "";
            }
            return new QName(ns, localName, prefix);
        } else {
            return null;
        }
    }
}

Related

1. createXMLStreamReaderFromReader(final Reader reader)
2. decodeAsDataHandler(XMLStreamReader reader, AttachmentUnmarshaller au)
3. getNextEvent(XMLStreamReader reader)
4. getXMLStreamReader(File file)
5. getXMLStreamReader(InputStream is)
6. isContextual(XMLStreamReader input)
7. isEndTag(XMLStreamReader reader, String tagLocalName)
8. isStartTag(XMLStreamReader reader)
9. logReader(Logger logger, String msg, XMLStreamReader reader)