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.calcite.test.catalog;
  
  import org.apache.calcite.plan.RelOptTable;
  import org.apache.calcite.rel.type.RelDataTypeFactory;
  import org.apache.calcite.rex.RexBuilder;
  import org.apache.calcite.rex.RexNode;
  import org.apache.calcite.schema.ColumnStrategy;
  import org.apache.calcite.sql.type.SqlTypeName;
  import org.apache.calcite.sql2rel.InitializerContext;
  import org.apache.calcite.sql2rel.NullInitializerExpressionFactory;
  
  import java.math.BigDecimal;
  
  /** Default values for the "EMPDEFAULTS" table. */
  class EmpInitializerExpressionFactory
      extends NullInitializerExpressionFactory {
    @Override public ColumnStrategy generationStrategy(RelOptTable table,
        int iColumn) {
      switch (iColumn) {
      case 0:
      case 1:
      case 5:
        return ColumnStrategy.DEFAULT;
      default:
        return super.generationStrategy(table, iColumn);
      }
    }
  
    @Override public RexNode newColumnDefaultValue(RelOptTable table,
        int iColumn, InitializerContext context) {
      final RexBuilder rexBuilder = context.getRexBuilder();
      final RelDataTypeFactory typeFactory = rexBuilder.getTypeFactory();
      switch (iColumn) {
      case 0:
        return rexBuilder.makeExactLiteral(new BigDecimal(123),
            typeFactory.createSqlType(SqlTypeName.INTEGER));
      case 1:
        return rexBuilder.makeLiteral("Bob");
      case 5:
        return rexBuilder.makeExactLiteral(new BigDecimal(555),
            typeFactory.createSqlType(SqlTypeName.INTEGER));
      default:
        return super.newColumnDefaultValue(table, iColumn, context);
      }
    }
  }
  