de.mhus.lib.core

Class MSql

java.lang.Object

de.mhus.lib.core.MSql

public class MSql
extends Object

MSql class.

Version:

$Id: $Id

Author:

mikehummel

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MSql.SqlTranslator

Constructor Summary

Constructors

Constructor and Description
MSql()

Method Summary

Modifier and Type	Method and Description
static String	encode(String string, boolean notNull) Prepare a string to use it in a sql query.
static String	escape(String in) Escape all single quots to double single quots.
static String	escape(String in, int truncateSize) Escape single quots and truncates the string is needed.
static void	executeUpdateQueries(Statement sth, String sql) Executes a bundle of queries, separated by semicolon.
static void	fillProperties(ResultSet res, MProperties prop) fillProperties.
static void	fillProperties(ResultSet res, MProperties prop, MSql.SqlTranslator translator) fillProperties.
static String	quoteSQL(String sql) used to prepare SQL string literals by doubling each embedded ' and wrapping in ' at each end.
static String	toSqlLabel(String in, Connection con) Removes all non standard characters.
static String	unescape(String in) Remove all double single quots.

Methods inherited from class java.lang.Object

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

Constructor Detail

MSql

public MSql()

Method Detail

encode

public static String encode(String string,
                            boolean notNull)

Prepare a string to use it in a sql query. It will also append the quots. A null string will be represented as one space of NULL

Parameters:

string - a String object.

notNull - Set to true will return a single space instead of the string NULL

Returns:

a String object.

escape

public static String escape(String in)

Escape all single quots to double single quots.

Parameters:

in - a String object.

Returns:

a String object.

unescape

public static String unescape(String in)

Remove all double single quots.

Parameters:

in - a String object.

Returns:

a String object.

escape

public static String escape(String in,
                            int truncateSize)

Escape single quots and truncates the string is needed.

Parameters:

in - a String object.

truncateSize - a int.

Returns:

a String object.

executeUpdateQueries

public static void executeUpdateQueries(Statement sth,
                                        String sql)
                                 throws SQLException

Executes a bundle of queries, separated by semicolon.

Parameters:

sth - a Statement object.

sql - a String object.

Throws:

SQLException - if any.

quoteSQL

public static String quoteSQL(String sql)

used to prepare SQL string literals by doubling each embedded ' and wrapping in ' at each end. Further quoting is required to use the results in Java String literals. If you use PreparedStatement, then this method is not needed. The ' quoting is automatically handled for you.

Parameters:

sql - Raw SQL string literal

Returns:

sql String literal enclosed in '

toSqlLabel

public static String toSqlLabel(String in,
                                Connection con)

Removes all non standard characters. Currently do not validate keywords.

Parameters:

in - The string to validate

con - Optional the sql connection to validate keywords. null is possible.

Returns:

a String object.

fillProperties

public static void fillProperties(ResultSet res,
                                  MProperties prop)
                           throws SQLException,
                                  MException

fillProperties.

Parameters:

res - a ResultSet object.

prop - a MProperties object.

Throws:

SQLException - if any.

MException - if any.

fillProperties

public static void fillProperties(ResultSet res,
                                  MProperties prop,
                                  MSql.SqlTranslator translator)
                           throws SQLException,
                                  MException

fillProperties.

Parameters:

res - a ResultSet object.

prop - a MProperties object.

translator - a MSql.SqlTranslator object.

Throws:

SQLException - if any.

MException - if any.