loadfromexternaltest.java

Java的面向对象数据库系统的源代码

// You can redistribute this software and/or modify it under the terms of
// the Ozone Library License version 1 published by ozone-db.org.
//
// The original code and portions created by SMB are
// Copyright (C) 1997-@year@ by SMB GmbH. All rights reserved.
//
// $Id: LoadFromExternalTest.java,v 1.2 2003/05/05 07:16:37 per_nyfelt Exp $
package test.ozoneDB.xml.dom4j;

import junit.framework.TestCase;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.ozoneDB.ExternalDatabase;
import org.ozoneDB.xml.dom4j.O3DocumentHelper;

import java.io.File;
import java.io.FileReader;
import java.net.URL;

/**
 * $Id: LoadFromExternalTest.java,v 1.2 2003/05/05 07:16:37 per_nyfelt Exp $
 */
public class LoadFromExternalTest extends TestCase {

    File file;

    final String addressXML = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
            "<addresses>" +
            "<address name=\"Andreas\"><town>New York</town></address>" +
            "<address name=\"Lars\"><town>Los Angeles</town></address>" +
            "</addresses>";

    ExternalDatabase db;

    public LoadFromExternalTest(String methodName) {
        super(methodName);
        file = new File("../../test.xml");
    }

    public void testLoadFromExternal() {
        try {
            db = ExternalDatabase.openDatabase("ozonedb:remote://localhost:3333");
            //db = ExternalDatabase.openDatabase("ozonedb:local:///home/per/testDB");
            O3DocumentHelper.configure(db);
        } catch (Exception e) {
            e.printStackTrace();
            fail(e.toString());
        }
        loadString();
        loadFile();
        parseFileIntoString();
        try {
            db.close();
        } catch (Exception e) {
            fail(e.toString());
        }
    }

    public void loadString() {
        try {
            Document doc;
            System.out.println("Parsing string");
            long start = System.currentTimeMillis();
            doc = O3DocumentHelper.parseText(addressXML);
            long end = System.currentTimeMillis();
            System.out.println("[testLoadString] parsing took " + Double.toString((end - start) / 1000) + " seconds");

            Element root = doc.getRootElement();
            assertEquals("Root element is not correct", "addresses", root.getName());
            assertEquals("expected root to have 2 children", root.elements().size(), 2);
            Element address = (Element) root.elements("address").get(0);
            assertEquals("attribute name is not Andreas", address.attributeValue("name"), "Andreas");

            O3DocumentHelper.deleteDocument(doc);
        } catch (Exception e) {
            e.printStackTrace();
            fail(e.toString());
        }

    }

    public void loadFile() {
        try {
            System.out.println("parsing file from client");
            long start = System.currentTimeMillis();
            SAXReader xmlReader = O3DocumentHelper.getSAXReader();
            Document doc = xmlReader.read(file);
            long end = System.currentTimeMillis();
            System.out.println("[testLoadFile] parsing took " + Double.toString((end - start) / 1000) + " seconds");
            //System.out.println("Result = " + doc.asXML());
            O3DocumentHelper.deleteDocument(doc);

        } catch (Exception e) {
            e.printStackTrace();
            fail(e.toString());
        }
    }

    public void parseFileIntoString() {
        try {
            System.out.println("parsing file into string");
            long start = System.currentTimeMillis();
            Document doc = O3DocumentHelper.parse(new FileReader(file));
            long end = System.currentTimeMillis();
            System.out.println("[testParseFileIntoString] parsing took " + Double.toString((end - start) / 1000) + " seconds");
            O3DocumentHelper.deleteDocument(doc);
        } catch (Exception e) {
            e.printStackTrace();
            fail(e.toString());
        }
    }


//    public void testParseFileAsServerStream() {
//        try {
//            System.out.println("parsing file by sending stream to server");
//            long start = System.currentTimeMillis();
//            Document doc = O3DocumentHelper.parseRemote(new FileInputStream(file));
//            long end = System.currentTimeMillis();
//            System.out.println("parsing took " + (end - start) / 1000 + " seconds");
//            System.out.println("Result = " + doc.asXML());
//            O3DocumentHelper.deleteDocument(doc);
//        } catch (Exception e) {
//            e.printStackTrace();
//            fail(e.toString());
//        }
//    }

    /**
     * Loads a document from a file.
     *
     * @param aURL the data source
     * @throws org.dom4j.DocumentException a org.dom4j.DocumentExcepiton occurs whenever the buildprocess fails.
     */
    private Document parseWithSAX(URL aURL) throws DocumentException {
        SAXReader xmlReader = O3DocumentHelper.getSAXReader();
        return xmlReader.read(aURL);
    }


}