CMIS: Rendition support of the repository

What is rendition?

Rendition is the alternative representation of a document. Not all the repositories support renditions.

Where can I use rendition?

Rendtions can be used while previewing a document, without downloading the actual content of a document.

RepositoryCapabilities interface provides 'getRenditionsCapability' method to get the rendition capabilities of the repository.

Following table summarizes valid values of rendition capability.

Value	Description
none	The repository does not expose renditions at all.
read	Renditions are provided by the repository and readable by the client.

Example

                  RepositoryInfo repoInfo = session.getRepositoryInfo();

                  CapabilityRenditions renditionsCapability = repoInfo.getCapabilities().getRenditionsCapability();

                  if (renditionsCapability == null) {

                           System.out.println("Repository is not providing this value");

                  } else if (CapabilityRenditions.NONE == renditionsCapability) {

                           System.out.println("Repository does not expose renditions at all");

                  } else if (CapabilityRenditions.READ == renditionsCapability) {

                           System.out.println("Renditions are provided by the repository and readable by the client");

                  } else {

                           System.out.println("Other value is written, which is not supported by repository");

                  }

Following is the complete working application.

TestCmis.java

package com.sample.util;

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

import org.apache.chemistry.opencmis.client.api.Session;
import org.apache.chemistry.opencmis.client.api.SessionFactory;
import org.apache.chemistry.opencmis.client.runtime.SessionFactoryImpl;
import org.apache.chemistry.opencmis.commons.SessionParameter;
import org.apache.chemistry.opencmis.commons.data.RepositoryInfo;
import org.apache.chemistry.opencmis.commons.enums.BindingType;
import org.apache.chemistry.opencmis.commons.enums.CapabilityRenditions;

public class TestCmis {

 private static String serverURL = "http://localhost:8080/chemistry-opencmis-server-inmemory-1.1.0/browser";
 private static String repositoryId = "A1";

 public static Session getSession() {
  Map<String, String> parameters = new HashMap<>();
  parameters.put(SessionParameter.BINDING_TYPE, BindingType.BROWSER.value());

  parameters.put(SessionParameter.USER, "");
  parameters.put(SessionParameter.PASSWORD, "");

  parameters.put(SessionParameter.REPOSITORY_ID, repositoryId);
  parameters.put(SessionParameter.BROWSER_URL, serverURL);

  SessionFactory sessionFactory = SessionFactoryImpl.newInstance();
  return sessionFactory.createSession(parameters);
 }

 public static void main(String args[]) {
  Session session = getSession();

  RepositoryInfo repoInfo = session.getRepositoryInfo();

  CapabilityRenditions renditionsCapability = repoInfo.getCapabilities().getRenditionsCapability();

  if (renditionsCapability == null) {
   System.out.println("Repository is not providing this value");
  } else if (CapabilityRenditions.NONE == renditionsCapability) {
   System.out.println("Repository does not expose renditions at all");
  } else if (CapabilityRenditions.READ == renditionsCapability) {
   System.out.println("Renditions are provided by the repository and readable by the client");
  } else {
   System.out.println("Other value is written, which is not supported by repository");
  }
 }

}

Output

Renditions are provided by the repository and readable by the client

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