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The jBATIS persistence framework will help you to significantly reduce the amount of Java code that you normally need to access a relational database. iBATIS simply maps JavaBeans to SQL statements using a very simple XML descriptor.

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/*
 *  Copyright 2004 Clinton Begin
 *
 *  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 com.ibatis.sqlmap.engine.exchange;

import com.ibatis.sqlmap.engine.cache.CacheKey;
import com.ibatis.sqlmap.engine.mapping.parameter.ParameterMap;
import com.ibatis.sqlmap.engine.scope.StatementScope;

/**
 * Base implementation for the DataExchange interface
 */
public abstract class BaseDataExchange implements DataExchange {

    private DataExchangeFactory dataExchangeFactory;

    protected BaseDataExchange(DataExchangeFactory dataExchangeFactory) {
        this.dataExchangeFactory = dataExchangeFactory;
    }

    @Override
    public CacheKey getCacheKey(StatementScope statementScope, ParameterMap parameterMap, Object parameterObject) {
        CacheKey key = new CacheKey();
        Object[] data = getData(statementScope, parameterMap, parameterObject);
        for (int i = 0; i < data.length; i++) {
            if (data[i] != null) {
                key.update(data[i]);
            }
        }
        return key;
    }

    /**
     * Getter for the factory that created this object
     * 
     * @return - the factory
     */
    public DataExchangeFactory getDataExchangeFactory() {
        return dataExchangeFactory;
    }

}