com.ibatis.sqlmap.engine.mapping.statement.RowHandlerCallback Maven / Gradle / Ivy

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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.mapping.statement;

import com.ibatis.sqlmap.client.event.RowHandler;
import com.ibatis.sqlmap.engine.mapping.result.ResultMap;
import com.ibatis.sqlmap.engine.scope.StatementScope;

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

/**
 * Class to manager row handler access
 */
public class RowHandlerCallback {

    private RowHandler rowHandler;
    private ResultMap resultMap;
    private Object resultObject;

    /**
     * Constructor
     *
     * @param resultMap
     *            - the result map
     * @param resultObject
     *            - the result object
     * @param rowHandler
     *            - the row handler object
     */
    public RowHandlerCallback(ResultMap resultMap, Object resultObject, RowHandler rowHandler) {
        this.rowHandler = rowHandler;
        this.resultMap = resultMap;
        this.resultObject = resultObject;
    }

    /**
     * Prepares the row object, and passes it to the row handler
     *
     * @param statementScope
     *            - the request scope
     * @param results
     *            - the result data
     */
    public void handleResultObject(StatementScope statementScope, Object[] results, ResultSet rs) throws SQLException {
        Object object;

        statementScope.setCurrentNestedKey(null);
        object = resultMap.resolveSubMap(statementScope, rs).setResultObjectValues(statementScope, resultObject,
            results);

        if (object != ResultMap.NO_VALUE) {
            rowHandler.handleRow(object);
        }
    }

    public RowHandler getRowHandler() {
        return rowHandler;
    }

}