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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
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* KIND, either express or implied. See the License for the
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package org.apache.cayenne.test.jdbc;
import java.sql.ResultSet;
import java.sql.SQLException;
/**
* A JDBC template for reading a single row from the database.
*/
abstract class RowTemplate<T> extends ResultSetTemplate<T> {
public RowTemplate(DBHelper parent) {
super(parent);
}
abstract T readRow(ResultSet rs, String sql) throws SQLException;
@Override
T readResultSet(ResultSet rs, String sql) throws SQLException {
if (rs.next()) {
T row = readRow(rs, sql);
if (rs.next()) {
throw new SQLException("More than one result for sql: " + sql);
}
return row;
}
else {
throw new SQLException("No results for sql: " + sql);
}
}
}