/*
* Copyright 2004-2015 the Seasar Foundation and the Others.
*
* 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 org.seasar.extension.jdbc.query;
import java.util.List;
import org.seasar.extension.jdbc.AutoBatchDelete;
import org.seasar.extension.jdbc.AutoBatchUpdate;
import org.seasar.extension.jdbc.ConditionType;
import org.seasar.extension.jdbc.PropertyMeta;
import org.seasar.extension.jdbc.WhereClause;
import org.seasar.extension.jdbc.manager.JdbcManagerImplementor;
import org.seasar.framework.util.FieldUtil;
/**
* {@link AutoBatchUpdate}の実装クラスです。
*
* @author koichik
* @param <T>
* エンティティの型です。
*/
public class AutoBatchDeleteImpl<T> extends
AbstractAutoBatchUpdate<T, AutoBatchDelete<T>> implements
AutoBatchDelete<T> {
/** DELETE文 */
protected static final String DELETE_STATEMENT = "delete from ";
/** バージョンプロパティを無視して削除する場合<code>true</code> */
protected boolean ignoreVersion;
/** where句 */
protected final WhereClause whereClause = new WhereClause();
/**
* @param jdbcManager
* 内部的なJDBCマネージャ
* @param entities
* エンティティのリスト
*/
public AutoBatchDeleteImpl(final JdbcManagerImplementor jdbcManager,
final List<T> entities) {
super(jdbcManager, entities);
}
public AutoBatchDelete<T> ignoreVersion() {
ignoreVersion = true;
return this;
}
public AutoBatchDelete<T> suppresOptimisticLockException() {
suppresOptimisticLockException = true;
return this;
}
@Override
protected void prepare(final String methodName) {
prepareCallerClassAndMethodName(methodName);
prepareWhereClause();
prepareSql();
}
/**
* where句の準備をします。
*/
protected void prepareWhereClause() {
for (final PropertyMeta propertyMeta : entityMeta
.getIdPropertyMetaList()) {
whereClause.addAndSql(ConditionType.EQ.getCondition(propertyMeta
.getColumnMeta().getName(), null));
}
if (!ignoreVersion && entityMeta.hasVersionPropertyMeta()) {
final PropertyMeta propertyMeta = entityMeta
.getVersionPropertyMeta();
whereClause.addAndSql(ConditionType.EQ.getCondition(propertyMeta
.getColumnMeta().getName(), null));
}
}
@Override
protected void prepareParams(final T entity) {
for (final PropertyMeta propertyMeta : entityMeta
.getIdPropertyMetaList()) {
final Object value = FieldUtil.get(propertyMeta.getField(), entity);
addParam(value, propertyMeta);
}
if (!ignoreVersion && entityMeta.hasVersionPropertyMeta()) {
final PropertyMeta propertyMeta = entityMeta
.getVersionPropertyMeta();
final Object value = FieldUtil.get(propertyMeta.getField(), entity);
addParam(value, propertyMeta);
}
}
/**
* SQLに変換します。
*
* @return SQL
*/
@Override
protected String toSql() {
final String tableName = entityMeta.getTableMeta().getFullName();
final StringBuilder buf = new StringBuilder(DELETE_STATEMENT.length()
+ tableName.length() + whereClause.getLength());
return new String(buf.append(DELETE_STATEMENT).append(tableName)
.append(whereClause.toSql()));
}
@Override
protected boolean isOptimisticLock() {
return !ignoreVersion && entityMeta.hasVersionPropertyMeta();
}
}