openCMIS: Relationship: Check the allowed source and target types

RelationshipType interface provides below methods to get the allowed source and target types for a relationship object.

List<ObjectType> getAllowedSourceTypes()

A list of object-type ids, indicating that the source object of a relationship object of this type MUST only be one of the types listed. If this attribute is "not set", then the source object MAY be of any type.

List<ObjectType> getAllowedTargetTypes()

A list of object-type ids, indicating that the target object of a relationship object of this type MUST only be one of the types listed. If this attribute is "not set", then the target object MAY be of any type.

Below statements are used to get the allowed source and target types while creating a relationship.

                  RelationshipType relationShipType = (RelationshipType) session.getTypeDefinition("cmis:relationship");

                  List<ObjectType> allowedSourceTypes = relationShipType.getAllowedSourceTypes();

                  List<ObjectType> allowedTargetTypes = relationShipType.getAllowedTargetTypes();

Find below working application.

TestCMIS.java

package com.sample.util;

import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.chemistry.opencmis.client.api.ObjectType;
import org.apache.chemistry.opencmis.client.api.RelationshipType;
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.enums.BindingType;

public class TestCmis {

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

 private 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);
 }

 private static void printTypes(List<ObjectType> allowedTypes) {
  for (ObjectType objectType : allowedTypes) {
   System.out.println(objectType);
  }
 }

 public static void main(String args[]) throws IOException {

  Session session = getSession();

  RelationshipType relationShipType = (RelationshipType) session.getTypeDefinition("cmis:relationship");

  List<ObjectType> allowedSourceTypes = relationShipType.getAllowedSourceTypes();
  List<ObjectType> allowedTargetTypes = relationShipType.getAllowedTargetTypes();

  System.out.println("Allowed source types");
  printTypes(allowedSourceTypes);

  System.out.println("Allowed target types");
  printTypes(allowedTargetTypes);

 }

}

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