fix redundant Checkstyle

hugegraph-api/src/main/java/com/baidu/hugegraph/api/auth/AccessAPI.java

@@ -21,7 +21,6 @@
 
 import java.util.List;
 
-import io.swagger.annotations.Api;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.ws.rs.Consumes;
 import jakarta.ws.rs.DELETE;

hugegraph-api/src/main/java/com/baidu/hugegraph/api/gremlin/CypherAPI.java

@@ -28,7 +28,6 @@ public class CypherAPI extends GremlinQueryAPI {
 
     private static final Logger LOG = Log.logger(CypherAPI.class);
 
-
     @GET
     @Timed
     @CompressInterceptor.Compress(buffer = (1024 * 40))
@@ -63,11 +62,11 @@ private Response queryByCypher(String graph,
         LOG.debug("translated gremlin is {}", gremlin);
 
         String auth = headers.getHeaderString(HttpHeaders.AUTHORIZATION);
-        String request = "{"
-                         + "\"gremlin\":\"" + gremlin + "\","
-                         + "\"bindings\":{},"
-                         + "\"language\":\"gremlin-groovy\","
-                         + "\"aliases\":{\"g\":\"__g_" + graph + "\"}}";
+        String request = "{" +
+                         "\"gremlin\":\"" + gremlin + "\"," +
+                         "\"bindings\":{}," +
+                         "\"language\":\"gremlin-groovy\"," +
+                         "\"aliases\":{\"g\":\"__g_" + graph + "\"}}";
 
         Response response = this.client().doPostRequest(auth, request);
         return transformResponseIfNeeded(response);

hugegraph-api/src/main/java/com/baidu/hugegraph/api/gremlin/GremlinAPI.java

@@ -19,9 +19,6 @@
 
 package com.baidu.hugegraph.api.gremlin;
 
-import java.util.Map;
-import java.util.Set;
-
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.ws.rs.Consumes;
 import jakarta.ws.rs.GET;
@@ -30,22 +27,15 @@
 import jakarta.ws.rs.Produces;
 import jakarta.ws.rs.core.Context;
 import jakarta.ws.rs.core.HttpHeaders;
-import jakarta.ws.rs.core.MediaType;
 import jakarta.ws.rs.core.MultivaluedMap;
 import jakarta.ws.rs.core.Response;
 import jakarta.ws.rs.core.UriInfo;
 
-import com.baidu.hugegraph.api.API;
 import com.baidu.hugegraph.api.filter.CompressInterceptor.Compress;
 import com.baidu.hugegraph.config.HugeConfig;
-import com.baidu.hugegraph.config.ServerOptions;
-import com.baidu.hugegraph.exception.HugeGremlinException;
 import com.baidu.hugegraph.metrics.MetricsUtil;
 import com.codahale.metrics.Histogram;
 import com.codahale.metrics.annotation.Timed;
-import com.google.common.collect.ImmutableMap;
-import com.google.common.collect.ImmutableSet;
-import jakarta.inject.Provider;
 import jakarta.inject.Singleton;
 
 @Path("gremlin")
@@ -58,7 +48,6 @@ public class GremlinAPI extends GremlinQueryAPI {
     private static final Histogram GREMLIN_OUTPUT_HISTOGRAM =
             MetricsUtil.registerHistogram(GremlinAPI.class, "gremlin-output");
 
-
     @POST
     @Timed
     @Compress

hugegraph-api/src/main/java/com/baidu/hugegraph/api/traversers/JaccardSimilarityAPI.java

@@ -86,8 +86,8 @@ public String get(@Context GraphManager manager,
         double similarity;
         try (JaccardSimilarTraverser traverser =
                                      new JaccardSimilarTraverser(g)) {
-             similarity = traverser.jaccardSimilarity(sourceId, targetId, dir,
-                                                      edgeLabel, maxDegree);
+            similarity = traverser.jaccardSimilarity(sourceId, targetId, dir,
+                                                     edgeLabel, maxDegree);
         }
         return JsonUtil.toJson(ImmutableMap.of("jaccard_similarity",
                                                similarity));

hugegraph-api/src/main/java/com/baidu/hugegraph/auth/HugeAuthenticator.java

@@ -43,36 +43,33 @@
 
 public interface HugeAuthenticator extends Authenticator {
 
-    public static final String KEY_USERNAME =
-                               CredentialGraphTokens.PROPERTY_USERNAME;
-    public static final String KEY_PASSWORD =
-                               CredentialGraphTokens.PROPERTY_PASSWORD;
-    public static final String KEY_TOKEN = "token";
-    public static final String KEY_ROLE = "role";
-    public static final String KEY_ADDRESS = "address";
-    public static final String KEY_PATH = "path";
+    String KEY_USERNAME = CredentialGraphTokens.PROPERTY_USERNAME;
+    String KEY_PASSWORD = CredentialGraphTokens.PROPERTY_PASSWORD;
+    String KEY_TOKEN = "token";
+    String KEY_ROLE = "role";
+    String KEY_ADDRESS = "address";
+    String KEY_PATH = "path";
 
-    public static final String USER_SYSTEM = "system";
-    public static final String USER_ADMIN = "admin";
-    public static final String USER_ANONY = AuthenticatedUser.ANONYMOUS_USERNAME;
+    String USER_SYSTEM = "system";
+    String USER_ADMIN = "admin";
+    String USER_ANONY = AuthenticatedUser.ANONYMOUS_USERNAME;
 
-    public static final RolePermission ROLE_NONE = RolePermission.none();
-    public static final RolePermission ROLE_ADMIN = RolePermission.admin();
+    RolePermission ROLE_NONE = RolePermission.none();
+    RolePermission ROLE_ADMIN = RolePermission.admin();
 
-    public static final String VAR_PREFIX = "$";
-    public static final String KEY_OWNER = VAR_PREFIX + "owner";
-    public static final String KEY_DYNAMIC = VAR_PREFIX + "dynamic";
-    public static final String KEY_ACTION = VAR_PREFIX + "action";
+    String VAR_PREFIX = "$";
+    String KEY_OWNER = VAR_PREFIX + "owner";
+    String KEY_DYNAMIC = VAR_PREFIX + "dynamic";
+    String KEY_ACTION = VAR_PREFIX + "action";
 
-    public void setup(HugeConfig config);
+    void setup(HugeConfig config);
 
-    public UserWithRole authenticate(String username, String password,
-                                     String token);
+    UserWithRole authenticate(String username, String password, String token);
 
-    public AuthManager authManager();
+    AuthManager authManager();
 
     @Override
-    public default void setup(final Map<String, Object> config) {
+    default void setup(final Map<String, Object> config) {
         E.checkState(config != null,
                      "Must provide a 'config' in the 'authentication'");
         String path = (String) config.get("tokens");
@@ -83,7 +80,7 @@ public default void setup(final Map<String, Object> config) {
     }
 
     @Override
-    public default User authenticate(final Map<String, String> credentials)
+    default User authenticate(final Map<String, String> credentials)
                                      throws AuthenticationException {
         HugeGraphAuthProxy.resetContext();
 
@@ -115,21 +112,21 @@ public default User authenticate(final Map<String, String> credentials)
     }
 
     @Override
-    public default boolean requireAuthentication() {
+    default boolean requireAuthentication() {
         return true;
     }
 
-    public default boolean verifyRole(RolePermission role) {
+    default boolean verifyRole(RolePermission role) {
         if (role == ROLE_NONE || role == null) {
             return false;
         } else {
             return true;
         }
     }
 
-    public void initAdminUser(String password) throws Exception;
+    void initAdminUser(String password) throws Exception;
 
-    public static HugeAuthenticator loadAuthenticator(HugeConfig conf) {
+    static HugeAuthenticator loadAuthenticator(HugeConfig conf) {
         String authClass = conf.get(ServerOptions.AUTHENTICATOR);
         if (authClass.isEmpty()) {
             return null;
@@ -150,7 +147,7 @@ public static HugeAuthenticator loadAuthenticator(HugeConfig conf) {
         return authenticator;
     }
 
-    public static class User extends AuthenticatedUser {
+    class User extends AuthenticatedUser {
 
         public static final User ADMIN = new User(USER_ADMIN, ROLE_ADMIN);
         public static final User ANONYMOUS = new User(USER_ANONY, ROLE_ADMIN);
@@ -255,7 +252,7 @@ public static class UserJson {
         }
     }
 
-    public static class RolePerm {
+    class RolePerm {
 
         @JsonProperty("roles") // graph -> action -> resource
         private Map<String, Map<HugePermission, Object>> roles;
@@ -395,7 +392,7 @@ public static boolean match(Object role, RolePermission grant,
         }
     }
 
-    public static class RequiredPerm {
+    class RequiredPerm {
 
         @JsonProperty("owner")
         private String owner;

hugegraph-api/src/main/java/com/baidu/hugegraph/auth/HugeGraphAuthProxy.java

@@ -1764,17 +1764,17 @@ public String toString() {
     private static final ThreadLocal<Context> CONTEXTS =
                                               new InheritableThreadLocal<>();
 
-    protected static final Context setContext(Context context) {
+    protected static Context setContext(Context context) {
         Context old = CONTEXTS.get();
         CONTEXTS.set(context);
         return old;
     }
 
-    protected static final void resetContext() {
+    protected static void resetContext() {
         CONTEXTS.remove();
     }
 
-    protected static final Context getContext() {
+    protected static Context getContext() {
         // Return task context first
         String taskContext = TaskManager.getContext();
         User user = User.fromJson(taskContext);
@@ -1785,15 +1785,15 @@ protected static final Context getContext() {
         return CONTEXTS.get();
     }
 
-    protected static final String getContextString() {
+    protected static String getContextString() {
         Context context = getContext();
         if (context == null) {
             return null;
         }
         return context.user().toJson();
     }
 
-    protected static final void logUser(User user, String path) {
+    protected static void logUser(User user, String path) {
         LOG.info("User '{}' login from client [{}] with path '{}'",
                  user.username(), user.client(), path);
     }

hugegraph-api/src/main/java/com/baidu/hugegraph/auth/WsAndHttpBasicAuthHandler.java

@@ -150,10 +150,10 @@ public void channelRead(ChannelHandlerContext ctx, Object msg) {
             }
         }
 
-        private void sendError(ChannelHandlerContext ctx, Object msg) {
+        private void sendError(ChannelHandlerContext context, Object msg) {
             // Close the connection as soon as the error message is sent.
-            ctx.writeAndFlush(new DefaultFullHttpResponse(HTTP_1_1, UNAUTHORIZED))
-               .addListener(ChannelFutureListener.CLOSE);
+            context.writeAndFlush(new DefaultFullHttpResponse(HTTP_1_1, UNAUTHORIZED))
+                   .addListener(ChannelFutureListener.CLOSE);
             ReferenceCountUtil.release(msg);
         }
     }

hugegraph-api/src/main/java/com/baidu/hugegraph/define/Checkable.java

@@ -2,9 +2,9 @@
 
 public interface Checkable {
 
-    public void checkCreate(boolean isBatch);
+    void checkCreate(boolean isBatch);
 
-    public default void checkUpdate() {
+    default void checkUpdate() {
         this.checkCreate(false);
     }
 }

hugegraph-api/src/main/java/com/baidu/hugegraph/serializer/Serializer.java

@@ -42,65 +42,61 @@
 
 public interface Serializer {
 
-    public String writeMap(Map<?, ?> map);
+    String writeMap(Map<?, ?> map);
 
-    public String writeList(String label, Collection<?> list);
+    String writeList(String label, Collection<?> list);
 
-    public String writePropertyKey(PropertyKey propertyKey);
+    String writePropertyKey(PropertyKey propertyKey);
 
-    public String writePropertyKeys(List<PropertyKey> propertyKeys);
+    String writePropertyKeys(List<PropertyKey> propertyKeys);
 
-    public String writeVertexLabel(VertexLabel vertexLabel);
+    String writeVertexLabel(VertexLabel vertexLabel);
 
-    public String writeVertexLabels(List<VertexLabel> vertexLabels);
+    String writeVertexLabels(List<VertexLabel> vertexLabels);
 
-    public String writeEdgeLabel(EdgeLabel edgeLabel);
+    String writeEdgeLabel(EdgeLabel edgeLabel);
 
-    public String writeEdgeLabels(List<EdgeLabel> edgeLabels);
+    String writeEdgeLabels(List<EdgeLabel> edgeLabels);
 
-    public String writeIndexlabel(IndexLabel indexLabel);
+    String writeIndexlabel(IndexLabel indexLabel);
 
-    public String writeIndexlabels(List<IndexLabel> indexLabels);
+    String writeIndexlabels(List<IndexLabel> indexLabels);
 
-    public String writeTaskWithSchema(SchemaElement.TaskWithSchema tws);
+    String writeTaskWithSchema(SchemaElement.TaskWithSchema tws);
 
-    public String writeVertex(Vertex v);
+    String writeVertex(Vertex v);
 
-    public String writeVertices(Iterator<Vertex> vertices, boolean paging);
+    String writeVertices(Iterator<Vertex> vertices, boolean paging);
 
-    public String writeEdge(Edge e);
+    String writeEdge(Edge e);
 
-    public String writeEdges(Iterator<Edge> edges, boolean paging);
+    String writeEdges(Iterator<Edge> edges, boolean paging);
 
-    public String writeIds(List<Id> ids);
+    String writeIds(List<Id> ids);
 
-    public String writeAuthElement(AuthElement elem);
+    String writeAuthElement(AuthElement elem);
 
-    public <V extends AuthElement> String writeAuthElements(String label,
-                                                            List<V> users);
+    <V extends AuthElement> String writeAuthElements(String label, List<V> users);
 
-    public String writePaths(String name, Collection<HugeTraverser.Path> paths,
+    String writePaths(String name, Collection<HugeTraverser.Path> paths,
                              boolean withCrossPoint, Iterator<Vertex> vertices);
 
-    public default String writePaths(String name,
+    default String writePaths(String name,
                                      Collection<HugeTraverser.Path> paths,
                                      boolean withCrossPoint) {
         return this.writePaths(name, paths, withCrossPoint, null);
     }
 
-    public String writeCrosspoints(CrosspointsPaths paths,
+    String writeCrosspoints(CrosspointsPaths paths,
                                    Iterator<Vertex> iterator, boolean withPath);
 
-    public String writeSimilars(SimilarsMap similars,
-                                Iterator<Vertex> vertices);
+    String writeSimilars(SimilarsMap similars, Iterator<Vertex> vertices);
 
-    public String writeWeightedPath(NodeWithWeight path,
-                                    Iterator<Vertex> vertices);
+    String writeWeightedPath(NodeWithWeight path, Iterator<Vertex> vertices);
 
-    public String writeWeightedPaths(WeightedPaths paths,
-                                     Iterator<Vertex> vertices);
+    String writeWeightedPaths(WeightedPaths paths, Iterator<Vertex> vertices);
 
-    public String writeNodesWithPath(String name, List<Id> nodes, long size,
+    String writeNodesWithPath(String name, List<Id> nodes, long size,
                                      Collection<HugeTraverser.Path> paths,
                                      Iterator<Vertex> vertices);
 }

hugegraph-core/src/main/java/com/baidu/hugegraph/analyzer/Analyzer.java

@@ -23,5 +23,5 @@
 
 public interface Analyzer {
 
-    public Set<String> segment(String text);
+    Set<String> segment(String text);
 }

hugegraph-core/src/main/java/com/baidu/hugegraph/backend/Transaction.java

@@ -21,13 +21,13 @@
 
 public interface Transaction {
 
-    public void commit() throws BackendException;
+    void commit() throws BackendException;
 
-    public void commitIfGtSize(int size) throws BackendException;
+    void commitIfGtSize(int size) throws BackendException;
 
-    public void rollback() throws BackendException;
+    void rollback() throws BackendException;
 
-    public boolean autoCommit();
+    boolean autoCommit();
 
-    public void close();
+    void close();
 }