Spring Framework example source code file (StandaloneImageTool.java)

This example Spring Framework source code file (StandaloneImageTool.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

bytearrayoutputstream, bytearrayoutputstream, context_config_location, filesystemxmlapplicationcontext, imagedatabase, imagedatabase, imagedescriptor, io, ioexception, ioexception, list, standaloneimagetool, standaloneimagetool, stopwatch, string, util

The Spring Framework StandaloneImageTool.java source code

package org.springframework.samples.imagedb.standalone;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;
import org.springframework.samples.imagedb.ImageDatabase;
import org.springframework.samples.imagedb.ImageDescriptor;
import org.springframework.util.StopWatch;

/**
 * Standalone sample that simply lists the image descriptors in the database.
 *
 * <p>Accesses the very same "WEB-INF/applicationContext.xml" file as the web
 * application. Needs to be executed in the web app root directory (that is,
 * with the web app root directory as JVM working directory).
 *
 * <p>Takes an optional command line argument that specifies the number of
 * calls to initiate for each image, a la "StandaloneImageTool 5". Can be
 * used to get a rough performance impression.
 *
 * @author Juergen Hoeller
 * @since 08.01.2004
 */
public class StandaloneImageTool {

	public static final String CONTEXT_CONFIG_LOCATION = "WEB-INF/applicationContext.xml";


	private final ImageDatabase imageDatabase;

	public StandaloneImageTool(ImageDatabase imageDatabase) {
		this.imageDatabase = imageDatabase;
	}

	public void listImages(int nrOfCalls) throws IOException {
		List images = this.imageDatabase.getImages();
		StopWatch stopWatch = new StopWatch();
		for (Iterator it = images.iterator(); it.hasNext();) {
			ImageDescriptor image = (ImageDescriptor) it.next();
			stopWatch.start(image.getName());
			ByteArrayOutputStream os = null;
			for (int i = 0; i < nrOfCalls; i++) {
				os = new ByteArrayOutputStream();
				this.imageDatabase.streamImage(image.getName(), os);
			}
			stopWatch.stop();
			System.out.println("Found image '" + image.getName() + "' with content size " + os.size() +
					" and description length " + image.getDescriptionLength());
		}
		System.out.println(stopWatch.prettyPrint());
	}


	public static void main(String[] args) throws IOException {
		int nrOfCalls = 1;
		if (args.length > 1 && !"".equals(args[1])) {
			nrOfCalls = Integer.parseInt(args[1]);
		}
		ApplicationContext context = new FileSystemXmlApplicationContext(CONTEXT_CONFIG_LOCATION);
		ImageDatabase idb = (ImageDatabase) context.getBean("imageDatabase");
		StandaloneImageTool tool = new StandaloneImageTool(idb);
		tool.listImages(nrOfCalls);
	}

}