net.cellcloud.talk.stuff.Stuff.java Source code

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Here is the source code for net.cellcloud.talk.stuff.Stuff.java

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/*
-----------------------------------------------------------------------------
This source file is part of Cell Cloud.
    
Copyright (c) 2009-2013 Cell Cloud Team (www.cellcloud.net)
    
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
    
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
    
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-----------------------------------------------------------------------------
*/

package net.cellcloud.talk.stuff;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.StringReader;
import java.nio.charset.Charset;
import java.text.DecimalFormat;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.json.JSONException;
import org.json.JSONObject;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/** 
 * 
 * @author Jiangwei Xu
 */
public abstract class Stuff {

    private static final DecimalFormat DF = new DecimalFormat("#0.0000");

    private StuffType type;
    protected String value;
    protected LiteralBase literalBase;

    /**  */
    public Stuff(StuffType type) {
        this.type = type;
    }

    /**  */
    public Stuff(StuffType type, String value) {
        this.type = type;
        this.value = value;
        this.literalBase = LiteralBase.STRING;
    }

    /**  */
    public Stuff(StuffType type, int value) {
        this.type = type;
        this.value = Integer.toString(value);
        this.literalBase = LiteralBase.INT;
    }

    /**  */
    public Stuff(StuffType type, long value) {
        this.type = type;
        this.value = Long.toString(value);
        this.literalBase = LiteralBase.LONG;
    }

    /**  */
    public Stuff(StuffType type, float value) {
        this.type = type;
        this.value = DF.format(value);
        this.literalBase = LiteralBase.FLOAT;
    }

    /**  */
    public Stuff(StuffType type, double value) {
        this.type = type;
        this.value = DF.format(value);
        this.literalBase = LiteralBase.DOUBLE;
    }

    /**  */
    public Stuff(StuffType type, boolean value) {
        this.type = type;
        this.value = Boolean.toString(value);
        this.literalBase = LiteralBase.BOOL;
    }

    /**  */
    public Stuff(StuffType type, JSONObject json) {
        this.type = type;
        this.value = json.toString();
        this.literalBase = LiteralBase.JSON;
    }

    /**  */
    public Stuff(StuffType type, Document doc) throws TransformerException {
        TransformerFactory tf = TransformerFactory.newInstance();
        Transformer t = tf.newTransformer();
        t.setOutputProperty("encoding", "UTF-8");
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        t.transform(new DOMSource(doc), new StreamResult(bos));
        this.value = bos.toString();
        this.type = type;
        this.literalBase = LiteralBase.XML;
    }

    /** ?? */
    abstract public void clone(Stuff target);

    /** 
     */
    public StuffType getType() {
        return this.type;
    }

    /** ?
    */
    public String getValueAsString() {
        return this.value;
    }

    /** ?
    */
    public int getValueAsInt() {
        return Integer.parseInt(this.value);
    }

    /** ?
    */
    public long getValueAsLong() {
        return Long.parseLong(this.value);
    }

    /** ?
     */
    public float getValueAsFloat() {
        return Float.parseFloat(this.value);
    }

    /** ??
     */
    public double getValueAsDouble() {
        return Double.parseDouble(this.value);
    }

    /** ?
    */
    public boolean getValueAsBool() {
        if (this.value.equalsIgnoreCase("true") || this.value.equalsIgnoreCase("yes")
                || this.value.equalsIgnoreCase("1"))
            return true;
        else
            return false;
    }

    /**  JSON ?
     * @throws JSONException 
     */
    public JSONObject getValueAsJSON() throws JSONException {
        return new JSONObject(this.value);
    }

    /**  XML ?
     * @throws ParserConfigurationException
     * @throws SAXException
     * @throws IOException
     */
    public Document getValueAsXML() throws ParserConfigurationException, SAXException, IOException {
        String xmlStr = new String(this.value.getBytes(), Charset.forName("UTF-8"));
        StringReader sr = new StringReader(xmlStr);
        InputSource is = new InputSource(sr);
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = factory.newDocumentBuilder();
        Document doc = builder.parse(is);
        return doc;
    }

    /** ?
    */
    public LiteralBase getLiteralBase() {
        return this.literalBase;
    }

    /** @private
     */
    protected void setValue(String value) {
        this.value = value;
    }

    /** @private
     */
    protected void setValue(int value) {
        this.value = Integer.toString(value);
    }

    /** @private
     */
    protected void setValue(long value) {
        this.value = Long.toString(value);
    }

    /** @private
     */
    protected void setValue(boolean value) {
        this.value = Boolean.toString(value);
    }

    /** @private
     */
    protected void setValue(float value) {
        this.value = DF.format(value);
    }

    /** @private
     */
    protected void setValue(double value) {
        this.value = DF.format(value);
    }

    /** @private
     */
    protected void setValue(JSONObject json) {
        this.value = json.toString();
    }

    /** @private
     */
    protected void setLiteralBase(LiteralBase literalBase) {
        this.literalBase = literalBase;
    }
}