MSSQL script fixes and added the /users/count REST API

components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/api/UserManagementService.java

@@ -288,12 +288,12 @@ public interface UserManagementService {
             httpMethod = "GET",
             value = "Get user list",
             notes = "If you wish to get the details of all the users registered with EMM, you can do so "
-                    + "using the REST API",
+                    + "using this REST API",
             tags = "User Management")
     @ApiResponses(value = {
             @ApiResponse(
                     code = 200,
-                    message = "OK. \n Successfully fetched the requested role.",
+                    message = "OK. \n Successfully fetched the requested users.",
                     response = BasicUserInfoList.class,
                     responseHeaders = {
                             @ResponseHeader(
@@ -343,6 +343,36 @@ public interface UserManagementService {
                     required = false)
             @QueryParam("limit") int limit);
 
+    @GET
+    @Path("/count")
+    @ApiOperation(
+            produces = MediaType.APPLICATION_JSON,
+            httpMethod = "GET",
+            value = "Get user count",
+            notes = "If you wish to get the user count registered with EMM, you can do so using this REST API",
+            tags = "User Management")
+    @ApiResponses(value = {
+            @ApiResponse(
+                    code = 200,
+                    message = "OK. \n Successfully fetched the user count.",
+                    response = BasicUserInfoList.class,
+                    responseHeaders = {
+                            @ResponseHeader(
+                                    name = "Content-Type",
+                                    description = "The content type of the body")
+                    }),
+            @ApiResponse(
+                    code = 406,
+                    message = "Not Acceptable.\n The requested media type is not supported",
+                    response = ErrorResponse.class),
+            @ApiResponse(
+                    code = 500,
+                    message = "Internal Server Error. \n Server error occurred while fetching the user list.",
+                    response = ErrorResponse.class)
+    })
+    @Permission(name = "View Users", permission = "/device-mgt/users/view")
+    Response getUserCount();
+
     @GET
     @Path("/search/usernames")
     @ApiOperation(

components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImpl.java

@@ -316,6 +316,26 @@ public class UserManagementServiceImpl implements UserManagementService {
         }
     }
 
+    @GET
+    @Path("/count")
+    @Override
+    public Response getUserCount() {
+        if (log.isDebugEnabled()) {
+            log.debug("Getting the user count");
+        }
+
+        try {
+            UserStoreManager userStoreManager = DeviceMgtAPIUtils.getUserStoreManager();
+            int userCount = userStoreManager.listUsers("*", -1).length;
+            return Response.status(Response.Status.OK).entity(userCount).build();
+        } catch (UserStoreException e) {
+            String msg = "Error occurred while retrieving the user count.";
+            log.error(msg, e);
+            return Response.serverError().entity(
+                    new ErrorResponse.ErrorResponseBuilder().setMessage(msg).build()).build();
+        }
+    }
+
     @GET
     @Path("/search/usernames")
     @Override

features/device-mgt/org.wso2.carbon.device.mgt.server.feature/src/main/resources/dbscripts/cdm/mssql.sql

@@ -3,7 +3,8 @@ CREATE TABLE DM_DEVICE_TYPE (
      NAME VARCHAR(300) DEFAULT NULL,
      PROVIDER_TENANT_ID INTEGER NULL,
      SHARED_WITH_ALL_TENANTS BIT NOT NULL DEFAULT 0,
-     PRIMARY KEY (ID)
+     PRIMARY KEY (ID),
+     CONSTRAINT DEVICE_TYPE_NAME UNIQUE(NAME)
 );
 
 CREATE INDEX IDX_DEVICE_TYPE ON DM_DEVICE_TYPE (NAME);
@@ -122,12 +123,12 @@ CREATE TABLE DM_PROFILE (
   ID INTEGER IDENTITY(1,1) NOT NULL,
   PROFILE_NAME VARCHAR(45) NOT NULL ,
   TENANT_ID INTEGER NOT NULL ,
-  DEVICE_TYPE_ID INTEGER NOT NULL ,
+  DEVICE_TYPE VARCHAR(300) NOT NULL ,
   CREATED_TIME DATETIME NOT NULL ,
   UPDATED_TIME DATETIME NOT NULL ,
   PRIMARY KEY (ID) ,
-  CONSTRAINT DM_PROFILE_DEVICE_TYPE FOREIGN KEY (DEVICE_TYPE_ID) REFERENCES
-  DM_DEVICE_TYPE (ID) ON DELETE NO ACTION ON UPDATE NO ACTION
+  CONSTRAINT DM_PROFILE_DEVICE_TYPE FOREIGN KEY (DEVICE_TYPE) REFERENCES
+  DM_DEVICE_TYPE (NAME) ON DELETE NO ACTION ON UPDATE NO ACTION
 );
 
 CREATE TABLE DM_POLICY (