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Provides JDBC integration mechanism for Bootique without implementing a specific DataSource. Requires an extra implementor module in runtime, such as 'bootique-jdbc-tomcat", etc.

There is a newer version: 3.0.M2

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/*
 * Licensed to ObjectStyle LLC under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ObjectStyle LLC 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
 * "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 io.bootique.jdbc;

import javax.sql.DataSource;
import java.sql.SQLException;
import java.util.Optional;

/**
 * A helper class to unwrap a decorated DataSource without exceptions.
 *
 * @since 3.0
 */
public final class DataSourceUnwrapper {

    public static  Optional unwrap(DataSource dataSource, Class desiredType) {
        try {
            return dataSource.isWrapperFor(desiredType) ? Optional.of(dataSource.unwrap(desiredType)) : Optional.empty();
        } catch (SQLException e) {
            throw new RuntimeException("Exception trying to unwrap " + desiredType.getName(), e);
        }
    }

    private DataSourceUnwrapper() {
    }
}