external/sql/storm-sql-core/src/jvm/org/apache/storm/sql/parser/ColumnConstraint.java

/**
 * 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.storm.sql.parser;

import org.apache.calcite.sql.SqlLiteral;
import org.apache.calcite.sql.parser.SqlParserPos;
import org.apache.calcite.sql.type.SqlTypeName;
import org.apache.calcite.sql.validate.SqlMonotonicity;

public class ColumnConstraint extends SqlLiteral {
  private ColumnConstraint(
      Object value, SqlTypeName typeName, SqlParserPos pos) {
    super(value, typeName, pos);
  }

  public static class PrimaryKey extends ColumnConstraint {
    private final SqlMonotonicity monotonicity;
    public PrimaryKey(SqlMonotonicity monotonicity, SqlParserPos pos) {
      super(SqlDDLKeywords.PRIMARY, SqlTypeName.SYMBOL, pos);
      this.monotonicity = monotonicity;
    }
    public SqlMonotonicity monotonicity() {
      return monotonicity;
    }
  }
}