/*
* 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.gen.internal.desc;
import javax.persistence.UniqueConstraint;
import org.seasar.extension.jdbc.gen.desc.ColumnDesc;
import org.seasar.extension.jdbc.gen.desc.UniqueKeyDesc;
import org.seasar.extension.jdbc.gen.desc.UniqueKeyDescFactory;
import org.seasar.extension.jdbc.gen.dialect.GenDialect;
/**
* {@link UniqueKeyDescFactory}の実装クラスです。
*
* @author taedium
*/
public class UniqueKeyDescFactoryImpl implements UniqueKeyDescFactory {
/** 方言 */
protected GenDialect dialect;
/**
* インスタンスを構築します。
*
* @param dialect
* 方言
*/
public UniqueKeyDescFactoryImpl(GenDialect dialect) {
if (dialect == null) {
throw new NullPointerException("dialect");
}
this.dialect = dialect;
}
public UniqueKeyDesc getCompositeUniqueKeyDesc(
UniqueConstraint uniqueConstraint) {
UniqueKeyDesc uniqueKeyDesc = new UniqueKeyDesc();
for (String columnName : uniqueConstraint.columnNames()) {
uniqueKeyDesc.addColumnName(columnName);
}
if (uniqueKeyDesc.getColumnNameList().isEmpty()) {
return null;
}
return uniqueKeyDesc;
}
public UniqueKeyDesc getSingleUniqueKeyDesc(ColumnDesc columnDesc) {
UniqueKeyDesc uniqueKeyDesc = new UniqueKeyDesc();
if (columnDesc.isUnique()) {
String columnName = columnDesc.getName();
uniqueKeyDesc.addColumnName(columnName);
}
if (uniqueKeyDesc.getColumnNameList().isEmpty()) {
return null;
}
return uniqueKeyDesc;
}
}