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/*
 * Copyright 2014 Objectos, Fábrica de Software LTDA.
 *
 * Licensed 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 br.com.objectos.way.sql;

import br.com.objectos.way.core.auto.AutoFunctional;

import com.google.common.base.Preconditions;

/**
 * @author [email protected] (Marcio Endo)
 */
public abstract class ColumnRef {

  private CanBuildColumnInfo builder;

  ColumnRef() {
  }

  ColumnInfo get() {
    return builder.get();
  }

  @AutoFunctional
  IndexColumnInfo toIndexColumnInfo() {
    ColumnInfo columnInfo = builder.get();
    return IndexColumnInfo.fixed()
        .columnInfo(columnInfo)
        .build();
  }

  void bind(CanBuildColumnInfo builder) {
    Preconditions.checkArgument(this.builder == null, "Re-bind is not allowed.");
    this.builder = builder;
  }

}