com.feedzai.commons.sql.abstraction.util

Class StringUtils

java.lang.Object

com.feedzai.commons.sql.abstraction.util.StringUtils

public class StringUtils
extends Object

String Utilities.

Since:

2.0.0

Author:

Rui Vilao (rui.vilao@feedzai.com)

Constructor Summary

Constructors

Constructor and Description
StringUtils()

Method Summary

Modifier and Type	Method and Description
static String	escapeSql(String str) Apache Commons-Lang 2.X contained StringEscapeUtils#escapeSql, but this method was removed in 3.X as discussed here: https://commons.apache.org/proper/commons-lang/article3_0.html#StringEscapeUtils.escapeSql For this reason, the source code has been copied from 2.X to here so that we can continue to use the logic and possibly build on it in the future.
static String	md5(String message) Generates the MD5 checksum for the specified message.
static String	md5(String message, int nchar) Generates de MD5 checksum for the specified message.
static String	quotize(String s) Puts quotes around a String.
static String	quotize(String s, String quoteChar) Puts quotes around a String.
static String	readString(InputStream stream) Reads a string from the input stream.
static String	singleQuotize(String s) Puts single quotes around a string.

Methods inherited from class java.lang.Object

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

Constructor Detail

StringUtils

public StringUtils()

Method Detail

quotize

public static String quotize(String s)

Puts quotes around a String.

Parameters:

s - the string to be 'quotized'

Returns:

a the string with quotes

quotize

public static String quotize(String s,
                             String quoteChar)

Puts quotes around a String.

Parameters:

s - the string to be 'quotized'

Returns:

a the string with quotes

singleQuotize

public static String singleQuotize(String s)

Puts single quotes around a string.

Parameters:

s - the string to be single 'quotized'

Returns:

a string with single quotes

md5

public static String md5(String message)

Generates the MD5 checksum for the specified message.

Parameters:

message - The message.

Returns:

The hexadecimal checksum.

md5

public static String md5(String message,
                         int nchar)

Generates de MD5 checksum for the specified message.

Parameters:

message - The message.

nchar - The maximum number of chars for the result hash.

Returns:

The hexadecimal checksum with the specified maximum number of chars.

readString

public static String readString(InputStream stream)
                         throws IOException

Reads a string from the input stream.

Parameters:

stream - The stream.

Returns:

The string from that stream.

Throws:

IOException - If an I/O error occurs.

escapeSql

public static String escapeSql(String str)

Apache Commons-Lang 2.X contained StringEscapeUtils#escapeSql, but this method was removed in 3.X as discussed here: https://commons.apache.org/proper/commons-lang/article3_0.html#StringEscapeUtils.escapeSql For this reason, the source code has been copied from 2.X to here so that we can continue to use the logic and possibly build on it in the future. ***************** Copied from commons-lang:commons-lang:2.6 ****************

Escapes the characters in a String to be suitable to pass to an SQL query.

For example,

statement.executeQuery("SELECT * FROM MOVIES WHERE TITLE='" +
   StringEscapeUtils.escapeSql("McHale's Navy") +
   "'");

At present, this method only turns single-quotes into doubled single-quotes ("McHale's Navy" => "McHale''s Navy"). It does not handle the cases of percent (%) or underscore (_) for use in LIKE clauses.

see http://www.jguru.com/faq/view.jsp?EID=8881

Parameters:

str - the string to escape, may be null

Returns:

a new String, escaped for SQL, null if null string input