Java SQL Table Column getColumnValue(String column, String defaultValue, Map columnIndexMap, ResultSet res)

Description

get Column Value

License

Apache License

Declaration

private static String getColumnValue(String column, String defaultValue, Map<String, Integer> columnIndexMap,
            ResultSet res) 

Method Source Code

//package com.java2s;
/**//  ww  w.  j  a  v  a  2  s .  c  om
 * Copyright ? 2016-2018 The Thingsboard Authors
 *
 * 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.*;

import java.util.Map;

public class Main {
    private static String getColumnValue(String column, String defaultValue, Map<String, Integer> columnIndexMap,
            ResultSet res) {
        int index = columnIndexMap.containsKey(column.toUpperCase()) ? columnIndexMap.get(column.toUpperCase())
                : -1;
        if (index > -1) {
            String str;
            try {
                Object obj = res.getObject(index);
                if (obj == null) {
                    return null;
                } else {
                    str = obj.toString();
                }
            } catch (Exception e) {
                str = "";
            }
            return str;
        } else {
            return defaultValue;
        }
    }
}

Related

1. getColumnType(ResultSet resultSet, int i, Map typeCache)
2. getColumnType(ResultSetMetaData rsm)
3. getColumnType(ResultSetMetaData rsmd, int idx)
4. getColumnTypes(ResultSet rs)
5. getColumnValue(ResultSet rs, ResultSetMetaData rsmd, int colIndex)
6. getColumnValueFromResultSet(int columnIndex, int argType, ResultSet rs)
7. getColunmNames(ResultSetMetaData rsmd)
8. getIndexColumns(Connection connection, String schema, String table, String indexName)
9. getIndexName(Connection conn, String table, String column)