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.cql3.ast;
  
  import java.util.Objects;
  import java.util.Optional;
  
  import org.apache.cassandra.schema.TableMetadata;
  
  public class TableReference implements Element
  {
      public final Optional<String> keyspace;
      public final String name;
  
      public TableReference(String name)
      {
          this(Optional.empty(), name);
      }
  
      public TableReference(Optional<String> keyspace, String name)
      {
          this.keyspace = Objects.requireNonNull(keyspace);
          this.name = Objects.requireNonNull(name);
      }
  
      public static TableReference from(TableMetadata metadata)
      {
          return new TableReference(Optional.of(metadata.keyspace), metadata.name);
      }
  
      @Override
      public void toCQL(StringBuilder sb, CQLFormatter formatter)
      {
          if (keyspace.isPresent())
          {
              Symbol.maybeQuote(sb, keyspace.get());
              sb.append('.');
          }
          Symbol.maybeQuote(sb, name);
      }
  }
  