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Android SDK used by developers to provide Backendless API in apps.
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/*
 * ********************************************************************************************************************
 *  
 *  BACKENDLESS.COM CONFIDENTIAL
 *  

 *  ********************************************************************************************************************
 *  

 *  Copyright 2012 BACKENDLESS.COM. All Rights Reserved.
 *  

 *  NOTICE: All information contained herein is, and remains the property of Backendless.com and its suppliers,
 *  if any. The intellectual and technical concepts contained herein are proprietary to Backendless.com and its
 *  suppliers and may be covered by U.S. and Foreign Patents, patents in process, and are protected by trade secret
 *  or copyright law. Dissemination of this information or reproduction of this material is strictly forbidden
 *  unless prior written permission is obtained from Backendless.com.
 *  
 *  ********************************************************************************************************************
 */

package com.backendless;

import com.backendless.async.callback.AsyncCallback;
import com.backendless.core.responder.AdaptingResponder;
import com.backendless.core.responder.policy.PoJoAdaptingPolicy;
import com.backendless.persistence.PersistenceOperations;
import com.backendless.utils.PermissionTypes;

public abstract class AbstractDataPermission
{
  private static final String PERMISSION_SERVICE = "com.backendless.services.persistence.permissions.ClientPermissionService";

  protected abstract PersistenceOperations getOperation();

  public  void grantForUser( String userId, T dataObject )
  {
    grantForUser( userId, dataObject, null );
  }

  public  void grantForUser( String userId, T dataObject, AsyncCallback responder )
  {
    String method = "updateUserPermission";
    Object[] args = buildArgs( dataObject, userId, PermissionTypes.GRANT );
    serverCall( responder, method, args, dataObject.getClass() );
  }

  public  void denyForUser( String userId, T dataObject )
  {
    denyForUser( userId, dataObject, null );
  }

  public  void denyForUser( String userId, T dataObject, AsyncCallback responder )
  {
    String method = "updateUserPermission";
    Object[] args = buildArgs( dataObject, userId, PermissionTypes.DENY );
    serverCall( responder, method, args, null );
  }

  public  void grantForRole( String roleName, T dataObject )
  {
    grantForRole( roleName, dataObject, null );
  }

  public  void grantForRole( String roleName, T dataObject, AsyncCallback responder )
  {
    String method = "updateRolePermission";
    Object[] args = buildArgs( dataObject, roleName, PermissionTypes.GRANT );
    serverCall( responder, method, args, dataObject.getClass() );
  }

  public  void denyForRole( String roleName, T dataObject )
  {
    denyForRole( roleName, dataObject, null );
  }

  public  void denyForRole( String roleName, T dataObject, AsyncCallback responder )
  {
    String method = "updateRolePermission";
    Object[] args = buildArgs( dataObject, roleName, PermissionTypes.DENY );
    serverCall( responder, method, args, null );
  }

  public  void grantForAllUsers( T dataObject )
  {
    grantForAllUsers( dataObject, null );
  }

  public  void grantForAllUsers( T dataObject, AsyncCallback responder )
  {
    String method = "updateAllUserPermission";
    Object[] args = buildArgs( dataObject, null, PermissionTypes.GRANT );
    serverCall( responder, method, args, dataObject.getClass() );
  }

  public  void denyForAllUsers( T dataObject )
  {
    denyForAllUsers( dataObject, null );
  }

  public  void denyForAllUsers( T dataObject, AsyncCallback responder )
  {
    String method = "updateAllUserPermission";
    Object[] args = buildArgs( dataObject, null, PermissionTypes.DENY);
    serverCall( responder, method, args, null );
  }

  public  void grantForAllRoles( T dataObject )
  {
    grantForAllRoles( dataObject, null );
  }

  public  void grantForAllRoles( T dataObject, AsyncCallback responder )
  {
    String method = "updateAllRolePermission";
    Object[] args = buildArgs( dataObject, null, PermissionTypes.GRANT );
    serverCall( responder, method, args, dataObject.getClass() );
  }

  public  void denyForAllRoles( T dataObject )
  {
    denyForAllRoles( dataObject, null );
  }

  public  void denyForAllRoles( T dataObject, AsyncCallback responder )
  {
    String method = "updateAllRolePermission";
    Object[] args = buildArgs( dataObject, null, PermissionTypes.DENY );
    serverCall( responder, method, args, null );
  }

  private  Object[] buildArgs( T dataObject, String principal, PermissionTypes permissionType )
  {
    String appId = Backendless.getApplicationId();
    String version = Backendless.getVersion();
    String tableName = Persistence.getSimpleName( dataObject.getClass() );
    String objectId = Persistence.getEntityId( dataObject );
    PersistenceOperations operation = getOperation();

    if( principal != null )
      return new Object[] { appId, version, tableName, principal, objectId, operation, permissionType };
    else
      return new Object[] { appId, version, tableName, objectId, operation, permissionType };
  }

  private  void serverCall( AsyncCallback responder, String method, Object[] args, Class type )
  {
    if( responder == null )
      Invoker.invokeSync( PERMISSION_SERVICE, method, args, new AdaptingResponder( type, new PoJoAdaptingPolicy() ) );
    else
      Invoker.invokeAsync( PERMISSION_SERVICE, method, args, responder, new AdaptingResponder( type, new PoJoAdaptingPolicy() ) );
  }
}