Java SQL Table Column resultSetToOneColumnAsCommamaSeparatedString(ResultSet rs)

Description

result Set To One Column As Commama Separated String

License

Apache License

Declaration

public static String resultSetToOneColumnAsCommamaSeparatedString(ResultSet rs) throws Exception 

Method Source Code

//package com.java2s;
/*//from ww  w . ja  v  a  2  s.c  om
 * Copyright 2012 University of Southern California
 * 
 * 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.
 */

import java.sql.ResultSet;
import java.sql.ResultSetMetaData;

public class Main {
    public static String resultSetToOneColumnAsCommamaSeparatedString(ResultSet rs) throws Exception {
        if (rs == null)
            return null;

        try {
            ResultSetMetaData metaData = rs.getMetaData();
            int numberOfColumns = metaData.getColumnCount();

            if (numberOfColumns > 1)
                return null;

            StringBuilder columnValues = new StringBuilder(numberOfColumns);
            int count = 0;
            while (rs.next()) {
                if (rs.getObject(1) == null)
                    return null;

                if (count == 0)
                    columnValues.append("'").append(rs.getString(1)).append("'");
                else
                    columnValues.append(",'").append(rs.getString(1)).append("'");
                count++;
            }
            return columnValues.toString();
        } catch (Exception e) {
            e.printStackTrace();
            throw new Exception(e);
        }
    }
}

Related

1. readString(final ResultSet resultSet, final String columnName)
2. readStringFromBlob(ResultSet resultSet, String columnLabel)
3. resultSetAsCount(ResultSet rs, String countColumn)
4. resultSetContainsColumn(ResultSet rs, String column)
5. resultSetHasColumn(ResultSet rs, String sColumnName)
6. resultSetToOneColumnAsList(ResultSet rs)
7. resultSetToStringFormat(ResultSet rs, String separator, String quote, boolean column)
8. resultSetValue(ResultSet resultSet, Class parameterClass, Object object, String columnLabel)
9. retrieveCoulmns(String tableName, String columnArray[], Statement statement, long offset, long numberOfRecords)