Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

import java.net.URL;
import java.util.HashMap;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;

import javax.xml.bind.Unmarshaller;
import org.xml.sax.SAXException;

public class Main {
    private static final HashMap<String, JAXBContext> marshallContexts = new HashMap<String, JAXBContext>();

    public static Object unmarshall(String cntxtPkg, InputStream in)
            throws JAXBException, SAXException, IOException {
        Unmarshaller unmarshaller = createUmarshall(cntxtPkg);
        if (unmarshaller == null)
            return null;
        return unmarshaller.unmarshal(in);
        // JAXBElement<?> element = (JAXBElement<?>) unmarshaller.unmarshal(in);
        //
        // return element.getValue();
    }

    public static Object unmarshall(String cntxtPkg, File xmlFile) throws JAXBException, SAXException, IOException {
        return unmarshall(cntxtPkg, new BufferedInputStream(new FileInputStream(xmlFile)));
    }

    public static Object unmarshall(String cntxtPkg, URL url) throws JAXBException, SAXException, IOException {
        InputStream is = url.openStream();
        return unmarshall(cntxtPkg, new BufferedInputStream(is));
    }

    public static Object unmarshall(String cntxtPkg, String filename)
            throws JAXBException, SAXException, IOException {
        return unmarshall(cntxtPkg, new BufferedInputStream(new FileInputStream(filename)));
    }

    private static Unmarshaller createUmarshall(String pkgName) throws JAXBException, SAXException {
        JAXBContext jaxbCtx = null;
        if ((jaxbCtx = marshallContexts.get(pkgName)) == null) {
            jaxbCtx = JAXBContext.newInstance(pkgName);
            marshallContexts.put(pkgName, jaxbCtx);
        }
        Unmarshaller unmarshaller = jaxbCtx.createUnmarshaller();

        return unmarshaller;
    }
}