org.sakaiproject.util.DbSingleStorageReader.java Source code

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Here is the source code for org.sakaiproject.util.DbSingleStorageReader.java

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/**********************************************************************************
 * $URL: https://source.sakaiproject.org/svn/kernel/trunk/kernel-util/src/main/java/org/sakaiproject/util/DbSingleStorageReader.java $
 * $Id: DbSingleStorageReader.java 51317 2008-08-24 04:38:02Z csev@umich.edu $
 ***********************************************************************************
 *
 * Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008 Sakai Foundation
 *
 * Licensed under the Educational Community 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.opensource.org/licenses/ECL-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.sakaiproject.util;

import java.sql.ResultSet;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.sakaiproject.db.api.SqlReader;

/**
 * @author ieb
 */
public class DbSingleStorageReader implements SqlReader {

    private static final Log log = LogFactory.getLog(DbSingleStorageReader.class);

    private DbSingleStorage storage;

    public DbSingleStorageReader(DbSingleStorage storage) {
        this.storage = storage;

    }

    /*
     * (non-Javadoc)
     * 
     * @see org.sakaiproject.db.api.SqlReader#readSqlResultRecord(java.sql.ResultSet)
     */
    public Object readSqlResultRecord(ResultSet result) {
        try {
            if (storage instanceof BaseDbBinarySingleStorage) {
                return ((BaseDbBinarySingleStorage) storage).readResource(result.getBytes(1));
            } else if (storage instanceof BaseDbDualSingleStorage) {
                return ((BaseDbDualSingleStorage) storage).readResource(result.getString(1), result.getBytes(2));
            } else {
                return ((BaseDbSingleStorage) storage).readResource(result.getString(1));
            }
        } catch (Exception ex) {
            log.error("Failed to read entity Record ");
        }
        return null;
    }
}