content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.cassandra.sidecar.utils;
  
  import com.datastax.driver.core.KeyspaceMetadata;
  import com.datastax.driver.core.Metadata;
  import com.datastax.driver.core.QueryOptions;
  import com.datastax.driver.core.TableMetadata;
  import org.apache.cassandra.sidecar.common.server.data.Name;
  
  /**
   * Utilities for {@link Metadata} operations
   */
  public class MetadataUtils
  {
      /**
       * Returns the metadata of a keyspace given its name.
       *
       * @param metadata the metadata object.
       * @param keyspace the name of the keyspace for which metadata should be returned.
       * @return the metadata of the requested keyspace or {@code null} if {@code keyspace} is not a
       * known keyspace. Note that the result might be stale or null if metadata was explicitly
       * disabled with {@link QueryOptions#setMetadataEnabled(boolean)}.
       */
      public static KeyspaceMetadata keyspace(Metadata metadata, Name keyspace)
      {
          return metadata.getKeyspace(keyspace.maybeQuotedName());
      }
  
      /**
       * Returns the metadata for a table contained in this keyspace.
       *
       * @param metadata the metadata object.
       * @param table    the name of table to retrieve
       * @return the metadata for table {@code name} if it exists in this keyspace, {@code null}
       * otherwise.
       */
      public static TableMetadata table(KeyspaceMetadata metadata, Name table)
      {
          return metadata.getTable(table.maybeQuotedName());
      }
  }
  