[apache#1838] feat(client): Add Java client support for fileset

clients/client-java/src/main/java/com/datastrato/gravitino/client/GravitinoFilesetCatalog.java

@@ -0,0 +1,105 @@
+/*
+ * Copyright 2023 Datastrato Pvt Ltd.
+ * This software is licensed under the Apache License version 2.
+ */
+package com.datastrato.gravitino.client;
+
+import com.datastrato.gravitino.NameIdentifier;
+import com.datastrato.gravitino.Namespace;
+import com.datastrato.gravitino.dto.AuditDTO;
+import com.datastrato.gravitino.dto.CatalogDTO;
+import com.datastrato.gravitino.exceptions.FilesetAlreadyExistsException;
+import com.datastrato.gravitino.exceptions.NoSuchCatalogException;
+import com.datastrato.gravitino.exceptions.NoSuchFilesetException;
+import com.datastrato.gravitino.exceptions.NoSuchSchemaException;
+import com.datastrato.gravitino.exceptions.NonEmptySchemaException;
+import com.datastrato.gravitino.exceptions.SchemaAlreadyExistsException;
+import com.datastrato.gravitino.file.Fileset;
+import com.datastrato.gravitino.file.FilesetCatalog;
+import com.datastrato.gravitino.file.FilesetChange;
+import com.datastrato.gravitino.rel.Schema;
+import com.datastrato.gravitino.rel.SchemaChange;
+import com.datastrato.gravitino.rel.SupportsSchemas;
+
+import java.util.Map;
+
+/**
+ * Fileset catalog is a catalog implementation that supports fileset like metadata
+ * operations, for example, schemas and filesets list, creation, update and deletion. A Fileset
+ * catalog is under the metalake.
+ */
+public class GravitinoFilesetCatalog extends CatalogDTO implements FilesetCatalog, SupportsSchemas {
+
+    private final RESTClient restClient;
+
+    public GravitinoFilesetCatalog(String name,
+                                   Type type,
+                                   String provider,
+                                   String comment,
+                                   Map<String, String> properties,
+                                   AuditDTO auditDTO,
+                                   RESTClient restClient) {
+        super(name, type, provider, comment, properties, auditDTO);
+        this.restClient = restClient;
+    }
+
+    @Override
+    public SupportsSchemas asSchemas() throws UnsupportedOperationException {
+        return this;
+    }
+
+    @Override
+    public FilesetCatalog asFilesetCatalog() throws UnsupportedOperationException {
+        return this;
+    }
+
+    @Override
+    public NameIdentifier[] listFilesets(Namespace namespace) throws NoSuchSchemaException {
+        return new NameIdentifier[0];
+    }
+
+    @Override
+    public Fileset loadFileset(NameIdentifier ident) throws NoSuchFilesetException {
+        return null;
+    }
+
+    @Override
+    public Fileset createFileset(NameIdentifier ident, String comment, Fileset.Type type, String storageLocation, Map<String, String> properties) throws NoSuchSchemaException, FilesetAlreadyExistsException {
+        return null;
+    }
+
+    @Override
+    public Fileset alterFileset(NameIdentifier ident, FilesetChange... changes) throws NoSuchFilesetException, IllegalArgumentException {
+        return null;
+    }
+
+    @Override
+    public boolean dropFileset(NameIdentifier ident) {
+        return false;
+    }
+
+    @Override
+    public NameIdentifier[] listSchemas(Namespace namespace) throws NoSuchCatalogException {
+        return new NameIdentifier[0];
+    }
+
+    @Override
+    public Schema createSchema(NameIdentifier ident, String comment, Map<String, String> properties) throws NoSuchCatalogException, SchemaAlreadyExistsException {
+        return null;
+    }
+
+    @Override
+    public Schema loadSchema(NameIdentifier ident) throws NoSuchSchemaException {
+        return null;
+    }
+
+    @Override
+    public Schema alterSchema(NameIdentifier ident, SchemaChange... changes) throws NoSuchSchemaException {
+        return null;
+    }
+
+    @Override
+    public boolean dropSchema(NameIdentifier ident, boolean cascade) throws NonEmptySchemaException {
+        return false;
+    }
+}