Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import javax.xml.namespace.QName;

import javax.xml.stream.XMLEventReader;

import javax.xml.stream.XMLStreamException;

import javax.xml.stream.events.StartElement;
import javax.xml.stream.events.XMLEvent;

public class Main {
    /**
     * Reads the events from the provided event stream until either a start or
     * end tag is encountered. In the former case, the start tag will be
     * returned, but if an end tag is encountered, <code>null</code> will be
     * returned. After returning, the stream will be positioned just before the
     * returned start element. The start element will not be consumed by this
     * method.
     * 
     * @param reader The event stream from which to read.
     * @return The StartElement read from the stream, or <code>null</code> if
     *         an end tag was found first, or the stream ended before a start
     *         element was found.
     * @throws XMLStreamException If an error occurs reading the stream.
     */
    public static final StartElement nextElement(XMLEventReader reader) throws XMLStreamException {

        return nextElement(reader, null);

    }

    /**
     * Reads the events from the provided event stream until either a start or
     * end tag is encountered. In the former case, the start tag will be
     * returned if it matches the specified QName, but if it doesn't match, an
     * end tag is encountered, or the stream ends, <code>null</code> will be
     * returned. After returning, the stream will be positioned just before the
     * start element. The start element will not be consumed by this method.
     * 
     * @param reader The event stream from which to read.
     * @param name The name of the element to read, or <code>null</code> to
     *            read any start tag.
     * @return The StartElement read from the stream, or <code>null</code> if
     *         the encountered start tag didn't match the specified QName, an
     *         end tag was found first, or the stream ended before a start
     *         element was found.
     * @throws XMLStreamException If an error occurs reading the stream.
     */
    public static final StartElement nextElement(XMLEventReader reader, QName name) throws XMLStreamException {

        while (reader.hasNext()) {

            XMLEvent nextEvent = reader.peek();
            if (nextEvent.isStartElement()) {

                StartElement start = nextEvent.asStartElement();
                if (name == null || start.getName().equals(name)) {

                    return start;

                } else {

                    break;

                }

            } else if (nextEvent.isEndElement()) {

                break;

            } else {

                // consume the event.
                reader.nextEvent();

            }

        }

        return null;

    }
}