http://jdbi.org/: jDBI is designed to provide convenient tabular data access in Java(tm). It uses the Java collections framework for query results, provides a convenient means of externalizing sql statements, and provides named parameter support for any database being used.
  • Brian McCallister
  • Martin Traverso
  • Henning Schmiedehausen
  • Adam Rosien
  • Thomas Dudziak
  • Steven Schlansker 
/*
 * 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.skife.jdbi.v2;

import org.skife.jdbi.v2.tweak.Argument;

import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Types;


class EnumArgument<T extends Enum<T>> implements Argument {

    private final T value;

    EnumArgument(T value) {
        this.value = value;
    }

    @Override
    public void apply(int position, PreparedStatement statement, StatementContext ctx) throws SQLException {
        if (value == null) {
            statement.setNull(position, Types.VARCHAR);
        }
        else {
            statement.setString(position, value.name());
        }
    }

    @Override
    public String toString() {
        return value != null ? value.toString() : "<null>";
    }
}