Lyo/tools

Overview

Example Checker Tool

• Audience: the developers who work on linked data
• Target: detect common problems in the instance of rdf resource file created by the developers.
• Input: input file format could be "RDF/XML", "N-TRIPLE", "TURTLE" (or "TTL") and "N3". For example, instance1.rdf.
• Output: highlight the problems either as warning or error. For example:
  • Error: "http://open-services.net/ns/auto#ParameterDefinition" is not accessible via GET, or its content does not contain the URI as would be expected in a RDFS vocabulary document.
  • Warning: Suspicious usage of: <rdf:type rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>

Building and Running the tools in Eclipse

Prerequisites

• Eclipse 3.6 or higher IDE
• EGit team provider for git (recommended) or git command line package.
• m2eclipse for Maven support in the Eclipse IDE
• LDP impl requires a Java 1.6 compiler and Java 1.6 runtime. The Eclipse project settings have been set appropriately. If you are building outside of Eclipse, please use Java 1.6.

Clone the Lyo git repositories

This example assumes EGit is being used

• Open the Git Repositories view in Eclipse and click the Clone Git Repository icon
• Use git://git.eclipse.org/gitroot/lyo/org.eclipse.lyo.docs as the URI (browse it also on line). User/Password are not required.

• On the Branch Selection page, select the master branch
• On the Local Destination page, specify a location or accept the default and click Finish

The repository should now show up in your Git Repositories view

Import the project from the git repository

• In the Git Repositories view, right click org.eclipse.lyo.docs and select Import Projects
• Select the Import Existing Projects wizard and click next
• Select the projects:
  • org.eclipse.lyo.docs.org.eclipse.lyo.examplechecker
  • org.eclipse.lyo.docs.org.eclipse.lyo.resourcetable
  • org.eclipse.lyo.docs.org.eclipse.lyo.TBD

Build all projects

To build the projects.

• Expand the org.eclipse.lyo.docs.org.eclise.lyo.examplecheker project
• Right click pom.xml -> Run As -> Maven clean
• Right click pom.xml -> Run As -> Maven install

• Expand the org.eclipse.lyo.docs.org.eclise.lyo.resourcetable project
• Right click pom.xml -> Run As -> Maven clean
• Right click pom.xml -> Run As -> Maven install

• Expand the org.eclipse.lyo.docs.org.eclise.lyo.TBD project
• Right click pom.xml -> Run As -> Maven clean
• Right click pom.xml -> Run As -> Maven install

• IBM JVM/JRE Users: There is an issue with m2eclipse and the the IBM JRE. If you have see the error java.lang.NoClassDefFoundError: org.slf4j.impl.StaticLoggerBinder when running a Maven install, you need to copy a newer slf4j api jar into your JRE directory to work around the issue until it is fixed:
  • Download slf4j-1.6.2.zip and extract the zip.
  • copy slf4j-api-1.6.2.jar from the slf4j distribution to the JAVA_HOME\jre\lib\ext directory
  • See https://bugs.eclipse.org/bugs/show_bug.cgi?id=338252 if you are interested in the details

Run the tools

Run the example checker tool

Run from Eclipse

Find the file CheckExample.java in the package explorer, right click, select Run As -> Java Application. This application expects one of the following arguments:

• path to a local file
• path to a local directory that contains a couple of files
• URL to a remote file

Invoke example checker API from another application

CheckExample.java file also provide the following APIs:

• ArrayList<ClassifiedErrorMessage> runExampleChecker(InputStream in, String inFormat, ArrayList<String> hostsSuppressedForURLCheck)
• ArrayList<ClassifiedErrorMessage> runExampleChecker(Model in, ArrayList<String> hostsSuppressedForURLCheck)
• ArrayList<String> runExampleCheckerAndReturnString(InputStream in, String inFormat, ArrayList<String> hostsSuppressedForURLCheck)
• ArrayList<String> runExampleCheckerAndReturnString(Model in, ArrayList<String> hostsSuppressedForURLCheck)