Package net.hironico.minisql.utils

Class DbUtils

java.lang.Object

net.hironico.minisql.utils.DbUtils

public class DbUtils
extends Object

Constructor Summary

Constructors

Constructor	Description
DbUtils()

Method Summary

Modifier and Type	Method	Description
static String	getJsonResultSet(DbConfig dbConfig, String sql)	Utility to get the result of an SQL qeury into JSON formatted string.
static List<Map<String,Properties>>	getPropertiesResultSet(DbConfig dbConfig, String sql, String propSeparator, String kvSeparator)	Convert the rows returned by the result set into a list of map associated properties.
static List<Map<String,Object>>	serialize(ResultSet rs)	Serialize a resultset object into a List of Maps.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DbUtils

public DbUtils()

Method Details

getJsonResultSet

public static String getJsonResultSet(DbConfig dbConfig,
 String sql)
                               throws SQLException

Utility to get the result of an SQL qeury into JSON formatted string. JSON properties are deduced from the meta data produced by the result of the query. This method works only if the sqlk query is actually returning data as a result, that is, update queries will not work (most propbably).

Parameters:

dbConfig - the database config to use for running the provided query

sql - the query to get the JSON result from

Returns:

the JSON formatted result of the common query

Throws:

SQLException

Since:

2.18.x

getPropertiesResultSet

public static List<Map<String,Properties>> getPropertiesResultSet(DbConfig dbConfig,
 String sql,
 String propSeparator,
 String kvSeparator)
                                                           throws Exception

Convert the rows returned by the result set into a list of map associated properties. Each key is the column name and the value is converted as a set of properties if possible. this works only if the values are text based and parsed using the given string : propSeparator is used to identifies key/value pairs and kvSeparator is used to identifies key and value.

Parameters:

dbConfig - the config to connect to

sql - the common to get result from

propSeparator - used to split properties (aka key value pairs)

kvSeparator - used to split key and value for each property

Returns:

list of mapped properties to a column

Throws:

Exception - in case of any problem

serialize

public static List<Map<String,Object>> serialize(ResultSet rs)
                                          throws SQLException

Serialize a resultset object into a List of Maps. Each map represent a row of the resultset wich key/value pairs are column names with their values. DATE, TIME and TIMESTAMP objects are formatted using the date format defined statically in this class. Please note that if passed a resultset object, then the resultset is NOT closed by this method.

Throws:

SQLException

See Also:

• dateTimeFormat
• timeFormat