com.enonic.cms.framework.xml.XMLBytes.java Source code

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Here is the source code for com.enonic.cms.framework.xml.XMLBytes.java

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/*
 * Copyright 2000-2011 Enonic AS
 * http://www.enonic.com/license
 */
package com.enonic.cms.framework.xml;

import java.io.ByteArrayInputStream;
import java.io.Serializable;

import javax.xml.transform.Source;

import org.apache.commons.codec.digest.DigestUtils;
import org.jdom.Document;
import org.jvnet.fastinfoset.FastInfosetSource;

/**
 * This class implements the actual document data in its binary form.
 */
public final class XMLBytes implements Serializable {
    /**
     * Fast infoset byte array.
     */
    private final byte[] compiledBytes;

    /**
     * MD5 hash code.
     */
    private String md5HashCode;

    /**
     * Construct the xml document.
     */
    public XMLBytes(byte[] compiledBytes) {
        this.compiledBytes = compiledBytes;
    }

    /**
     * Return hash code.
     */
    public synchronized String getMD5() {
        if (this.md5HashCode == null) {
            this.md5HashCode = DigestUtils.md5Hex(this.compiledBytes);
        }

        return this.md5HashCode;
    }

    /**
     * Return the xml as compiled bytes.
     */
    public byte[] getData() {
        return this.compiledBytes;
    }

    /**
     * Return the xml as text.
     */
    public String getAsString() throws XMLException {
        return XMLDocumentHelper.convertToString(this);
    }

    /**
     * Return as W3C dom document.
     */
    public org.w3c.dom.Document getAsDOMDocument() throws XMLException {
        return XMLDocumentHelper.convertToW3CDocument(this);
    }

    /**
     * Return as JDOM document.
     */
    public Document getAsJDOMDocument() throws XMLException {
        return XMLDocumentHelper.convertToJDOMDocument(this);
    }

    /**
     * Return as a source.
     */
    public Source getAsSource() {
        ByteArrayInputStream in = new ByteArrayInputStream(this.compiledBytes);
        return new FastInfosetSource(in);
    }

    /**
     * Return the hash code.
     */
    public int hashCode() {
        return getMD5().hashCode();
    }

    /**
     * Return true if equals.
     */
    public boolean equals(Object o) {
        return (o == this) || ((o instanceof XMLBytes) && getMD5().equals(((XMLBytes) o).getMD5()));
    }
}