jakarta.servlet.jsp.jstl.sql.ResultSupport Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jakarta.jakartaee-api Show documentation

Jakarta EE Platform API

There is a newer version: 11.0.0-M4

Show newest version

/*
 * Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
 * Copyright 2004 The Apache Software Foundation
 *
 * 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 jakarta.servlet.jsp.jstl.sql;

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

/**
 * Supports the creation of a jakarta.servlet.jsp.jstl.sql.Result object
 * from a source java.sql.ResultSet object. A Result object makes it much 
 * easier for page authors to access and manipulate the data resulting 
 * from a SQL query.
 *
 * @author Justyna Horwat
 *
 */
public class ResultSupport {


    /**
     * Converts a ResultSet object to a Result object.
     *
     * @param rs the ResultSet object
     *
     * @return The Result object created from the ResultSet
     */
    public static Result toResult(ResultSet rs) {
        try {
            return new ResultImpl(rs, -1, -1);
        } catch (SQLException ex) {
            return null;
        }
    }

    /**
     * Converts maxRows of a ResultSet object to a 
     * Result object.
     *
     * @param rs the ResultSet object
     * @param maxRows the maximum number of rows to be cached into the Result object.
     *
     * @return The Result object created from the ResultSet,
     * limited by maxRows
     */
    public static Result toResult(ResultSet rs, int maxRows) {
        try {
            return new ResultImpl(rs, -1, maxRows);
        } catch (SQLException ex) {
            return null;
        }
    }

}