org.tec.webapp.jdbc.entity.support.IdentifierCallback.java Source code

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Here is the source code for org.tec.webapp.jdbc.entity.support.IdentifierCallback.java

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/*******************************************************************************
 * Copyright 2014 org.tec
 *
 * 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.tec.webapp.jdbc.entity.support;

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

import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.PreparedStatementCallback;

/**
 * prepared statement callback for inserts that return identity assumes flag
 * Statement.RETURN_GENERATED_KEYS is set when creating statement
 */
public class IdentifierCallback implements PreparedStatementCallback<Long> {

    /** {@inheritDoc} */
    @Override()
    public Long doInPreparedStatement(PreparedStatement ps) throws SQLException, DataAccessException {
        ResultSet generatedKeys = null;
        try {
            ps.execute();

            generatedKeys = ps.getGeneratedKeys();

            if (generatedKeys.next()) {
                return Long.valueOf(generatedKeys.getLong(1));
            } else {
                throw new SQLException("Unable to insert new record " + ps.toString());
            }
        } finally {
            if (generatedKeys != null) {
                generatedKeys.close();
            }
        }
    }
}