CMIS: Change log support of repository

RepositoryCapabilities interface provides 'getChangesCapability' method to check the level of change log support by the repository. Following table summarizes the possible values.

Value	Description
none	The repository does not support the change log feature.
objectidsonly	The change log can return only the object ids for changed objects in the repository and an indication of the type of change, not details of the actual change.
properties	The change log can return properties and the object id for the changed objects.
all	The change log can return the object ids for changed objects in the repository and more information about the actual change.

Example

                  CapabilityChanges capabilityChanges = repoInfo.getCapabilities().getChangesCapability();

                  if(capabilityChanges == null){

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

                  }else if(capabilityChanges == CapabilityChanges.NONE){

                           System.out.println("The repository does not support the change log feature");

                  }else if(capabilityChanges == CapabilityChanges.OBJECTIDSONLY){

                           System.out.println("The change log can return only the object ids for changed objects in the repository and an indication of the type of change, not details of the actual change.");

                  }else if(capabilityChanges == CapabilityChanges.PROPERTIES){

                           System.out.println("The change log can return properties and the object id for the changed objects.");

                  }else if(capabilityChanges == CapabilityChanges.ALL){

                           System.out.println("The change log can return the object ids for changed objects in the repository and more information about the actual change.");

                  }

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.CapabilityChanges;

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();

  CapabilityChanges capabilityChanges = repoInfo.getCapabilities().getChangesCapability();

  if(capabilityChanges == null){
   System.out.println("Repository is not providing this value");
  }else if(capabilityChanges == CapabilityChanges.NONE){
   System.out.println("The repository does not support the change log feature");
  }else if(capabilityChanges == CapabilityChanges.OBJECTIDSONLY){
   System.out.println("The change log can return only the object ids for changed objects in the repository and an indication of the type of change, not details of the actual change.");
  }else if(capabilityChanges == CapabilityChanges.PROPERTIES){
   System.out.println("The change log can return properties and the object id for the changed objects.");
  }else if(capabilityChanges == CapabilityChanges.ALL){
   System.out.println("The change log can return the object ids for changed objects in the repository and more information about the actual change.");
  }
 }

}

Output

The change log can return only the object ids for changed objects in the repository and an indication of the type of change, not details of the actual change.

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