Prevent instantiation of utility classes

Also prevent extension.
2014-08-26 11:49:46 -07:00 · 2014-08-26 11:49:46 -07:00 · 480f0e883d
parent 967f55c2e4
commit 480f0e883d
21 changed files with 102 additions and 23 deletions
--- a/apis/atmos/src/main/java/org/jclouds/atmos/reference/AtmosHeaders.java
+++ b/apis/atmos/src/main/java/org/jclouds/atmos/reference/AtmosHeaders.java
@ -21,7 +21,7 @@ package org.jclouds.atmos.reference;
 * 
 * @see <a href="https://community.emc.com/community/labs/atmos_online" />
 */
-public interface AtmosHeaders {
+public final class AtmosHeaders {

   public static final String SIGNATURE = "x-emc-signature";
   public static final String LISTABLE_META = "x-emc-listable-meta";
@ -34,5 +34,8 @@ public interface AtmosHeaders {
   public static final String UID = "x-emc-uid";
   public static final String TOKEN = "x-emc-token";
   public static final String CHECKSUM = "x-emc-wschecksum";
-   
+
+   private AtmosHeaders() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/apis/cloudstack/src/main/java/org/jclouds/cloudstack/config/CloudStackProperties.java
+++ b/apis/cloudstack/src/main/java/org/jclouds/cloudstack/config/CloudStackProperties.java
@ -20,7 +20,7 @@ package org.jclouds.cloudstack.config;
 /**
 * Configuration properties and constants used in CloudStack connections.
 */
-public interface CloudStackProperties {
+public final class CloudStackProperties {

   /**
    * Type of credentials specified during {@link ComputeServiceContextBuilder#overrides}. If
@ -45,4 +45,8 @@ public interface CloudStackProperties {
    * delete the keypair(s) when the last node in the group is destroyed.
    */
   public static final String AUTO_GENERATE_KEYPAIRS = "jclouds.cloudstack.auto-generate-keypairs";
+
+   private CloudStackProperties() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/apis/cloudwatch/src/main/java/org/jclouds/cloudwatch/domain/Namespaces.java
+++ b/apis/cloudwatch/src/main/java/org/jclouds/cloudwatch/domain/Namespaces.java
@ -21,7 +21,7 @@ package org.jclouds.cloudwatch.domain;
 *
 * @see <a href="http://docs.amazonwebservices.com/AmazonCloudWatch/latest/DeveloperGuide/CW_Support_For_AWS.html#aws-namespaces" />
 */
-public interface Namespaces {
+public final class Namespaces {

   public static final String AUTO_SCALING = "AWS/AutoScaling";
   public static final String DYNAMODB = "AWS/DynamoDB";
@ -34,4 +34,7 @@ public interface Namespaces {
   public static final String SQS = "AWS/SQS";
   public static final String STORAGE_GATEWAY = "AWS/StorageGateway";

+   private Namespaces() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/apis/ec2/src/main/java/org/jclouds/ec2/domain/Tag.java
+++ b/apis/ec2/src/main/java/org/jclouds/ec2/domain/Tag.java
@ -37,7 +37,7 @@ public class Tag {
   /**
    * Describes the well-known resource types that can be tagged.
    */
-   public interface ResourceType {
+   public static final class ResourceType {
      public static final String CUSTOMER_GATEWAY = "customer-gateway";
      public static final String DHCP_OPTIONS = "dhcp-options";
      public static final String IMAGE = "image";
@ -54,6 +54,10 @@ public class Tag {
      public static final String VPC = "vpc";
      public static final String VPN_CONNECTION = "vpn-connection";
      public static final String VPN_GATEWAY = "vpn-gateway";
+
+      private ResourceType() {
+         throw new AssertionError("intentionally unimplemented");
+      }
   }
   
   public static Builder builder() {
--- a/apis/openstack-keystone/src/main/java/org/jclouds/openstack/keystone/v2_0/config/KeystoneProperties.java
+++ b/apis/openstack-keystone/src/main/java/org/jclouds/openstack/keystone/v2_0/config/KeystoneProperties.java
@ -19,7 +19,7 @@ package org.jclouds.openstack.keystone.v2_0.config;
 /**
 * Configuration properties and constants used in Keystone connections.
 */
-public interface KeystoneProperties {
+public final class KeystoneProperties {

   /**
    * Type of credentials used to log into the auth service.
@ -68,4 +68,8 @@ public interface KeystoneProperties {
    * @see ServiceType
    */
   public static final String SERVICE_TYPE = "jclouds.keystone.service-type";
+
+   private KeystoneProperties() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/apis/openstack-keystone/src/main/java/org/jclouds/openstack/keystone/v2_0/extensions/ExtensionNamespaces.java
+++ b/apis/openstack-keystone/src/main/java/org/jclouds/openstack/keystone/v2_0/extensions/ExtensionNamespaces.java
@ -21,9 +21,13 @@ package org.jclouds.openstack.keystone.v2_0.extensions;
 *
 * @see <a href= "http://docs.openstack.org/developer/keystone/extension_development.html" />
 */
-public interface ExtensionNamespaces {
+public final class ExtensionNamespaces {
   /**
    * OpenStack Keystone Admin Support
    */
   public static final String OS_KSADM = "http://docs.openstack.org/identity/api/ext/OS-KSADM/v1.0";
+
+   private ExtensionNamespaces() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/apis/openstack-keystone/src/main/java/org/jclouds/openstack/v2_0/reference/AuthHeaders.java
+++ b/apis/openstack-keystone/src/main/java/org/jclouds/openstack/v2_0/reference/AuthHeaders.java
@ -16,10 +16,13 @@
 */
 package org.jclouds.openstack.v2_0.reference;

-public interface AuthHeaders {
+public final class AuthHeaders {

   public static final String AUTH_USER = "X-Auth-User";
   public static final String AUTH_KEY = "X-Auth-Key";
   public static final String AUTH_TOKEN = "X-Auth-Token";

+   private AuthHeaders() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/apis/openstack-nova/src/main/java/org/jclouds/openstack/nova/v2_0/extensions/ExtensionNamespaces.java
+++ b/apis/openstack-nova/src/main/java/org/jclouds/openstack/nova/v2_0/extensions/ExtensionNamespaces.java
@ -21,7 +21,7 @@ package org.jclouds.openstack.nova.v2_0.extensions;
 *
 * @see <a href= "http://nova.openstack.org/api_ext/" />
 */
-public interface ExtensionNamespaces {
+public final class ExtensionNamespaces {
   /**
    * Keypair Support
    */
@ -110,4 +110,8 @@ public interface ExtensionNamespaces {
    * Consoles extension
    */
   public static final String CONSOLES = "http://docs.openstack.org/compute/ext/os-consoles/api/v2";
+
+   private ExtensionNamespaces() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/apis/s3/src/main/java/org/jclouds/s3/domain/AccessControlList.java
+++ b/apis/s3/src/main/java/org/jclouds/s3/domain/AccessControlList.java
@ -247,12 +247,16 @@ public class AccessControlList {
   // Class and Enum declarations to represent Grants, Grantees and Permissions //
   // /////////////////////////////////////////////////////////////////////////////

-   public interface Permission {
+   public static final class Permission {
      public static final String READ = "READ";
      public static final String WRITE = "WRITE";
      public static final String READ_ACP = "READ_ACP";
      public static final String WRITE_ACP = "WRITE_ACP";
      public static final String FULL_CONTROL = "FULL_CONTROL";
+
+      private Permission() {
+         throw new AssertionError("intentionally unimplemented");
+      }
   };

   public static class Grant implements Comparable<Grant> {
@ -417,11 +421,15 @@ public class AccessControlList {
      }
   }

-   public interface GroupGranteeURI {
+   public static final class GroupGranteeURI {
      public static final URI ALL_USERS = URI.create("http://acs.amazonaws.com/groups/global/AllUsers");
      public static final URI AUTHENTICATED_USERS = URI
               .create("http://acs.amazonaws.com/groups/global/AuthenticatedUsers");
      public static final URI LOG_DELIVERY = URI.create("http://acs.amazonaws.com/groups/s3/LogDelivery");
+
+      private GroupGranteeURI() {
+         throw new AssertionError("intentionally unimplemented");
+      }
   }

   public static class GroupGrantee extends Grantee {
--- a/apis/s3/src/main/java/org/jclouds/s3/reference/S3Headers.java
+++ b/apis/s3/src/main/java/org/jclouds/s3/reference/S3Headers.java
@ -23,7 +23,7 @@ package org.jclouds.s3.reference;
 *      href="http://docs.amazonwebservices.com/AmazonS3/latest/index.html?RESTAuthentication.html"
 *      />
 */
-public interface S3Headers {
+public final class S3Headers {

   /**
    * Amazon S3 has clones, which often replace this with their particular tag.
@ -126,4 +126,8 @@ public interface S3Headers {
    * Instruction file header to be placed in the metadata of instruction files
    */
   public static final String CRYPTO_INSTRUCTION_FILE = HEADER_PREFIX + "crypto-instr-file";
+
+   private S3Headers() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/apis/sqs/src/main/java/org/jclouds/sqs/config/SQSProperties.java
+++ b/apis/sqs/src/main/java/org/jclouds/sqs/config/SQSProperties.java
@ -20,7 +20,7 @@ package org.jclouds.sqs.config;
 /**
 * Configuration properties and constants used in SQS connections.
 */
-public interface SQSProperties {
+public final class SQSProperties {

   /**
    * Integer property.
@ -41,4 +41,7 @@ public interface SQSProperties {
    */
   public static final String CREATE_QUEUE_RETRY_INTERVAL = "jclouds.sqs.create-queue.retry-interval";

+   private SQSProperties() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/apis/sqs/src/main/java/org/jclouds/sqs/domain/Attribute.java
+++ b/apis/sqs/src/main/java/org/jclouds/sqs/domain/Attribute.java
@ -24,7 +24,7 @@ package org.jclouds.sqs.domain;
 *      "http://docs.amazonwebservices.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/acp-overview.html#PermissionTypes"
 *      />
 */
-public interface Attribute {
+public final class Attribute {

   /**
    * approximate number of visible messages in a queue.
@ -82,4 +82,8 @@ public interface Attribute {
    * delayed.
    */
   public static final String DELAY_SECONDS = "DelaySeconds";
+
+   private Attribute() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/apis/sqs/src/main/java/org/jclouds/sqs/reference/SQSParameters.java
+++ b/apis/sqs/src/main/java/org/jclouds/sqs/reference/SQSParameters.java
@ -22,7 +22,7 @@ package org.jclouds.sqs.reference;
 * @see <a href="http://docs.amazonwebservices.com/AWSSimpleQueueService/2011-10-01/APIReference/Query_QueryParams.html"
 *      />
 */
-public interface SQSParameters {
+public final class SQSParameters {

   /**
    * The action to perform. For example: CreateQueue.
@ -67,4 +67,8 @@ public interface SQSParameters {
    * For more information, see Query Request Authentication in the Amazon SQS Developer Guide.
    */
   public static final String SIGNATURE_VERSION = "SignatureVersion";
+
+   private SQSParameters() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/apis/sts/src/main/java/org/jclouds/aws/reference/FormParameters.java
+++ b/apis/sts/src/main/java/org/jclouds/aws/reference/FormParameters.java
@ -21,7 +21,7 @@ package org.jclouds.aws.reference;
 * 
 * @see <a href="http://docs.amazonwebservices.com/AWSEC2/latest/APIReference/Query-Common-Parameters.html"/>
 */
-public interface FormParameters {
+public final class FormParameters {

   /**
    * Indicates the action to perform. Example: RunInstances
@ -72,4 +72,8 @@ public interface FormParameters {
    * 
    */
   public static final String SIGNATURE_VERSION = "SignatureVersion";
+
+   private FormParameters() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/apis/vcloud/src/main/java/org/jclouds/vcloud/VCloudMediaType.java
+++ b/apis/vcloud/src/main/java/org/jclouds/vcloud/VCloudMediaType.java
@ -23,7 +23,7 @@ import javax.ws.rs.core.MediaType;
 * 
 * @see MediaType
 */
-public interface VCloudMediaType {
+public final class VCloudMediaType {
   /**
    * "application/vnd.vmware.vcloud.error+xml"
    */
@ -209,4 +209,7 @@ public interface VCloudMediaType {
    */
   public static final MediaType RASDITEM_XML_TYPE = new MediaType("application", "vnd.vmware.vcloud.rasdItem+xml");

+   private VCloudMediaType() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/common/azure/src/main/java/org/jclouds/azure/storage/reference/AzureStorageHeaders.java
+++ b/common/azure/src/main/java/org/jclouds/azure/storage/reference/AzureStorageHeaders.java
@ -21,10 +21,13 @@ package org.jclouds.azure.storage.reference;
 * 
 * @see <a href="http://msdn.microsoft.com/en-us/library/dd179357.aspx" />
 */
-public interface AzureStorageHeaders {
+public final class AzureStorageHeaders {

   public static final String USER_METADATA_PREFIX = "x-ms-meta-";
   public static final String REQUEST_ID = "x-ms-request-id";
   public static final String VERSION = "x-ms-version";

+   private AzureStorageHeaders() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/common/openstack/src/main/java/org/jclouds/openstack/reference/AuthHeaders.java
+++ b/common/openstack/src/main/java/org/jclouds/openstack/reference/AuthHeaders.java
@ -21,7 +21,7 @@ package org.jclouds.openstack.reference;
 * 
 * @see <a href="http://docs.rackspacecloud.com/servers/api/cs-devguide-latest.pdf" />
 */
-public interface AuthHeaders {
+public final class AuthHeaders {

   public static final String AUTH_USER = "X-Auth-User";
   public static final String AUTH_KEY = "X-Auth-Key";
@ -34,4 +34,7 @@ public interface AuthHeaders {
   public static final String SERVER_MANAGEMENT_URL = "X-Server-Management" + URL_SUFFIX;
   public static final String STORAGE_URL = "X-Storage" + URL_SUFFIX;

+   private AuthHeaders() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/compute/src/main/java/org/jclouds/compute/config/ComputeServiceProperties.java
+++ b/compute/src/main/java/org/jclouds/compute/config/ComputeServiceProperties.java
@ -16,7 +16,7 @@
 */
 package org.jclouds.compute.config;

-public interface ComputeServiceProperties {
+public final class ComputeServiceProperties {
   public static final String RESOURCENAME_PREFIX = "jclouds.compute.resourcename-prefix";
   public static final String RESOURCENAME_DELIMITER = "jclouds.compute.resourcename-delimiter";

@ -109,4 +109,7 @@ public interface ComputeServiceProperties {
    */
   public static final String SOCKET_FINDER_ALLOWED_INTERFACES = "jclouds.compute.socket-finder-allowed-interfaces";

+   private ComputeServiceProperties() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/providers/gogrid/src/main/java/org/jclouds/gogrid/reference/GoGridHeaders.java
+++ b/providers/gogrid/src/main/java/org/jclouds/gogrid/reference/GoGridHeaders.java
@ -16,6 +16,10 @@
 */
 package org.jclouds.gogrid.reference;

-public interface GoGridHeaders {
+public final class GoGridHeaders {
    public static final String VERSION = "v";
+
+   private GoGridHeaders() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/providers/gogrid/src/main/java/org/jclouds/gogrid/reference/GoGridQueryParams.java
+++ b/providers/gogrid/src/main/java/org/jclouds/gogrid/reference/GoGridQueryParams.java
@ -16,7 +16,7 @@
 */
 package org.jclouds.gogrid.reference;

-public interface GoGridQueryParams {
+public final class GoGridQueryParams {

   public static final String ID_KEY = "id";
   public static final String NAME_KEY = "name";
@ -60,4 +60,8 @@ public interface GoGridQueryParams {
   public static final String IMAGE_DESCRIPTION_KEY = "description";

   public static final String LOOKUP_LIST_KEY = "lookup";
+
+   private GoGridQueryParams() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }
--- a/providers/softlayer/src/main/java/org/jclouds/softlayer/reference/SoftLayerConstants.java
+++ b/providers/softlayer/src/main/java/org/jclouds/softlayer/reference/SoftLayerConstants.java
@ -19,7 +19,7 @@ package org.jclouds.softlayer.reference;
 /**
 * Configuration properties and constants used in SoftLayer connections.
 */
-public interface SoftLayerConstants {
+public final class SoftLayerConstants {

   public static final String SOFTLAYER_PROVIDER_NAME = "softlayer";

@ -40,4 +40,7 @@ public interface SoftLayerConstants {
    */
   public static final String PROPERTY_SOFTLAYER_INCLUDE_PUBLIC_IMAGES = "jclouds.softlayer.include_public_images";

+   private SoftLayerConstants() {
+      throw new AssertionError("intentionally unimplemented");
+   }
 }