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/*
 * Copyright 2014-2015 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.sql;

import br.com.objectos.db.ColumnOf;
import br.com.objectos.db.ParameterBinder;
import br.com.objectos.db.SqlBuilder;
import br.com.objectos.db.SqlElement;
import br.com.objectos.db.UpdatableValue;

/**
 * @author [email protected] (Marcio Endo)
 */
class UpdateValue implements UpdatableValue {

  private final SqlElement source;
  private final UpdatableValue target;

  private UpdateValue(SqlElement source, UpdatableValue target) {
    this.source = source;
    this.target = target;
  }

  public static UpdateValue of(ColumnOf column) {
    return new UpdateValue(column, column);
  }

  @Override
  public SqlBuilder accept(SqlBuilder sql) {
    return sql.accept(source).add('=').add('?');
  }

  @Override
  public void bind(ParameterBinder binder) {
    target.bind(binder);
  }

}