AEM CRUD ENGINE

AEM Crud Engine is a tool that can be used to search the JCR using XPath, QueryBuilder, or a Simple Query UI. The tool allows you to take the results from your query and make bulk updates utilizing Sling Pipes.

This Project was to become more familiar with the under documented Sling Pipes. I provided some documention in the ReadME with sample Sling Pipes.

This Project was not tested for Production use.

This a content package project generated using the AEM Multimodule Lazybones template.

Setup

This project uses:

• AEM 6.3
• Java 1.8
• Maven 3.2

Bundles:

• Sling Pipes
• Sling Query
• JSON API
• GSON

Maven Includes Used: https://mvnrepository.com

<dependency>
    <groupId>org.apache.sling</groupId>
    <artifactId>org.apache.sling.pipes</artifactId>
    <version>1.1.0</version>
</dependency>
<dependency>
    <groupId>org.apache.sling</groupId>
    <artifactId>org.apache.sling.query</artifactId>
    <version>3.0.0</version>
</dependency>
<dependency>
    <groupId>javax.json</groupId>
    <artifactId>javax.json-api</artifactId>
    <version>1.1.2</version>
</dependency>
<dependency>
    <groupId>com.google.code.gson</groupId>
    <artifactId>gson</artifactId>
    <version>2.3</version>
</dependency>

Sample SlingPipes API - Based on 1.1.0

Echo Simplified xpath, both below return the same

 pipeBuilder.echo("/etc/testpath");
 pipeBuilder.xpath("/jcr:root/etc/testpath");

All nodes recursive

pipeBuilder.xpath("/jcr:root/etc/testpath//*");

Child nodes

pipeBuilder.xpath("/jcr:root/etc/testpath/*");

Get parent node of results

pipeBuilder.parent();

Make directory under result node

pipeBuilder.mkdir("heyworld");

Example to show hidden shortcuts

.mv(destination) equivalent to .pipe("slingPipes/mv").expr(destination)

pipeBuilder.mv("/jcr:root/etc/testpath2");
pipeBuilder.pipe("slingPipes/mv").expr("/jcr:root/etc/testpath2").path();

xpath

plumber.newPipe(resolver).xpath("/jcr:root/etc/testpath//[@sling:resourceType=]*").run();

Remove

plumber.newPipe(resolver).xpath("/jcr:root/etc/testpath//*").rm().run();

Move Property

pipeBuilder.xpath("/jcr:root/etc/testpath").path("/etc/testpath").name("test").mv("${path.test}/heyworld/temp/sample").path("${path.test}/heyworld/child/testing").run();

Write Property

plumber.newPipe(resolver).xpath("/jcr:root/etc/testpath//*").write("test","test");

// creates props "1=2" and "3=4"
pipeBuilder.write("1","2","3","4");

pipeBuilder.pipe("slingPipes/write").conf("temp","other","random","temp");

Conditional

pipeBuilder.xpath("/jcr:root/etc/testpath//*").name("item")
   .write("testProp","${(item.testProp === '2' ? '1' : '3')}");

Replace

pipeBuilder.xpath("/jcr:root/etc/testpath//*").name("item")
   .write("testProp","${item.testProp.replace('0','new')}");
  
pipeBuilder.xpath("/jcr:root/etc/testpath//*").name("item").write("test", "${item['sling:resourceType'].replace('sling','that')}");
 

test break down chain commands

PipeBuilder pipeBuilder = plumber.newPipe(resolver);
pipeBuilder.xpath("/jcr:root/etc/testpath//*[@testProp]").parent().write("testProp","parent");
pipeBuilder.run();

Building

This project uses Maven for building. Common commands:

From the root directory, run mvn -PautoInstallPackage clean install to build the bundle and content package and install to a CQ instance.

From the bundle directory, run mvn -PautoInstallBundle clean install to build just the bundle and install to a CQ instance.

Using with AEM Developer Tools for Eclipse

To use this project with the AEM Developer Tools for Eclipse, import the generated Maven projects via the Import:Maven:Existing Maven Projects wizard. Then enable the Content Package facet on the content project by right-clicking on the project, then select Configure, then Convert to Content Package... In the resulting dialog, select src/main/content as the Content Sync Root.

Using with VLT

To use vlt with this project, first build and install the package to your local CQ instance as described above. Then cd to content/src/main/content/jcr_root and run

vlt --credentials admin:admin checkout -f ../META-INF/vault/filter.xml --force http://localhost:4502/crx

Once the working copy is created, you can use the normal vlt up and vlt ci commands.

Specifying CRX Host/Port

The CRX host and port can be specified on the command line with: mvn -Dcrx.host=otherhost -Dcrx.port=5502