br.com.objectos.sql.UpdateWhere Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of api Show documentation

The newest version!

/*
 * 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.Condition;
import br.com.objectos.db.Dialect;
import br.com.objectos.db.ParameterBinder;
import br.com.objectos.db.UpdatableValue;
import br.com.objectos.db.UpdateBuilder;

/**
 * @author [email protected] (Marcio Endo)
 */
abstract class UpdateWhere extends UpdateNode implements UpdateResult {

  private final T column;

  private Condition condition;

  public UpdateWhere(UpdateNode previous, T column) {
    super(previous);
    this.column = column;
  }

  @Override
  public final UpdateQuery compile(Dialect dialect) {
    condition();
    return new UpdateQuery(this, dialect);
  }

  @Override
  final ParameterBinder bind0(ParameterBinder binder) {
    column.bind(binder);
    return binder;
  }

  @Override
  final UpdateBuilder write0(UpdateBuilder sql) {
    if (condition != null) {
      sql.where(condition);
    }
    return sql;
  }

  abstract Condition conditionEq(T column);

  private void condition() {
    condition = conditionEq(column);
  }

}