ResultSetTemplate.java

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package org.apache.cayenne.test.jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

abstract class ResultSetTemplate<T> {

	DBHelper parent;

	public ResultSetTemplate(DBHelper parent) {
		this.parent = parent;
	}

	abstract T readResultSet(ResultSet rs, String sql) throws SQLException;

	T execute(String sql) throws SQLException {
		UtilityLogger.log(sql);

		try (Connection c = parent.getConnection();) {

			try (PreparedStatement st = c.prepareStatement(sql);) {

				try (ResultSet rs = st.executeQuery();) {

					return readResultSet(rs, sql);
				}
			}
		}
	}
}