Creating a Java-backed web script

This task demonstrates how you can create a Java-backed web script and build and deploy it using the Maven SkyVault SDK.

You need to have completed the previous tutorials. You should also be familiar with the tutorial described here.

You can use the Maven SkyVault SDK to build and deploy a Java-backed web script module.

In the maven_projects directory type the following command:

                        
mvn archetype:generate -DarchetypeCatalog=https://artifacts.alfresco.com/nexus/content/groups/public/archetype-catalog.xml -Dfilter=org.alfresco.maven.archetype:

Select the All-in-One Archetype, which is option 2.
Select the default archetype version number.
For the groupId enter com.alfresco.tutorials.
For the artifactId enter javadir.
Accept the default SkyVault version by pressing Enter.
The project will be built in the javadir directory.
Change into the javadir project directory.
Change into the amp/src/main/amp/config/SkyVault directory.
Create a new directory structure from your current directory extension/templates/webscripts/com/alfresco/tutorials.
This will be used to store the web script description file and associated Freemarker template.

In the current directory create a new web description file javadir.get.desc.xml with the following contents:

                        
<webscript>
  <shortname>Folder Listing Utility</shortname>
  <description>Java-backed implementation of listing folder contents</description>
  <url>/javadir/{folderpath}?verbose={verbose?}</url>
  <authentication>user</authentication>
</webscript>

In the current directory create a new Freemarker template file javadir.get.html.ftl with the following contents:

                        
<html>
 <head>
  <title>Folder ${folder.displayPath}/${folder.name}</title>
  </head>
 <body>
   <p>SkyVault ${server.edition} Edition v${server.version} : dir</p>
  <p>Contents of folder ${folder.displayPath}/${folder.name}</p>
  <table>
   <#list folder.children as child>
   <tr>
   <td><#if child.isContainer>d</#if></td>
   <#if verbose>
     <td>${child.properties.modifier}</td>
     <td><#if child.isDocument>
       ${child.properties.content.size}</#if></td>
     <td>${child.properties.modified?date}</td>
   </#if>
   <td>${child.name}</td>
   </tr>
   </#list>
  </table>
 </body>
</html>

In the javadir/amp/src/main/amp/config/alfresco/module/amp directory load the file called module-context.xml into your editor. Change the contents to the following:

                        
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC '-//SPRING//DTD BEAN//EN' 'http://www.springframework.org/dtd/spring-beans.dtd'>
<beans>
	<!--  Spring bean -->
	<bean id="webscript.com.alfresco.tutorials.javadir.get" class="com.alfresco.tutorials.JavaDir"
		parent="webscript">
		<property name="repository" ref="repositoryHelper" />
	</bean>
</beans>

Change into the ./amp/src/main/amp directory, load module.properties into your editor and make the following changes. Change:

                        
# module.repo.version.min=2.0
# module.repo.version.max=2.1

to:

module.repo.version.min=4.0
module.repo.version.max=4.2

In the amp/src/main/java directory create the directory structure com/alfresco/tutorials.
This will contain the Java class for the web script.

In this directory create the Java class file, JavaDir.java, with the following contents:

                        
package com.alfresco.tutorials;

import java.util.HashMap;
import java.util.Map;

import org.alfresco.repo.model.Repository;
import org.alfresco.service.cmr.repository.NodeRef;
import org.springframework.extensions.webscripts.Cache;
import org.springframework.extensions.webscripts.DeclarativeWebScript;
import org.springframework.extensions.webscripts.Status;
import org.springframework.extensions.webscripts.WebScriptException;
import org.springframework.extensions.webscripts.WebScriptRequest;

public class JavaDir extends DeclarativeWebScript {
	private Repository repository;

	public void setRepository(Repository repository) {
		this.repository = repository;
	}

	protected Map<String, Object> executeImpl(WebScriptRequest req,
			Status status, Cache cache) {

		NodeRef folder;

		// extract folder listing arguments from URI
		String verboseArg = req.getParameter("verbose");
		Boolean verbose = Boolean.parseBoolean(verboseArg);

		Map<String, String> templateArgs = req.getServiceMatch()
				.getTemplateVars();
		String folderPath = templateArgs.get("folderpath");

		if (folderPath.equals("Company Home")) {

			folder = repository.getCompanyHome();

		} else {
			String nodePath = "workspace/SpacesStore/" + folderPath;
			folder = repository.findNodeRef("path", nodePath.split("/"));
		}

		// validate that folder has been found
		if (folder == null) {
			throw new WebScriptException(Status.STATUS_NOT_FOUND, "Folder "
					+ folderPath + " not found");
		}

		// construct model for response template to render
		Map<String, Object> model = new HashMap<String, Object>();
		model.put("verbose", verbose);
		model.put("folder", folder);
		return model;
	}
}

From the maven_projects/javadir directory type mvn install to build your project.
You can check the contents of the generated AMP file by changing into the ./amp/target directory, and then type:
```
unzip -t amp.amp                        
                    
```
Check that the web script description and Freemarker files, JavaDir.class file and module-context.xml files are present and located where expected.
From the maven_projects/javadir directory run your newly created project by typing:
```
           
mvn install -Prun            
        
```
Browse to SkyVault Share at http://localhost:8080/share.
Create a test folder in the Repository (Company Home), called test.
Upload a number of files into the test directory.
Create several test directories in the test folder, for example test1, test2, test3.

In your web browser navigate to the address:

http://localhost:8080/alfresco/service/javadir/Company%20Home/test

The browser will return a list of files and directories, the directories will be prepended with a "d", such as in the following example:

SkyVault Community Edition v4.2.0 (4576) : dir

Contents of folder /Company Home/test
d 	test1
d 	test2
	t3.jpeg
	t4.jpeg
	index.html
	t2.jpeg

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