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SQL Parser and Optimizer

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/*
 * 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 com.hazelcast.org.apache.calcite.sql;

/**
 * The VALUES operator.
 */
public class SqlValuesOperator extends SqlSpecialOperator {
  //~ Constructors -----------------------------------------------------------

  public SqlValuesOperator() {
    super("VALUES", SqlKind.VALUES);
  }

  //~ Methods ----------------------------------------------------------------

  @Override public void unparse(
      SqlWriter writer,
      SqlCall call,
      int leftPrec,
      int rightPrec) {
    final SqlWriter.Frame frame =
        writer.startList(SqlWriter.FrameTypeEnum.VALUES, "VALUES", "");
    for (SqlNode operand : call.getOperandList()) {
      writer.sep(",");
      operand.unparse(writer, 0, 0);
    }
    writer.endList(frame);
  }
}