io.cdap.wrangler.dq

Class ConvertString

java.lang.Object

io.cdap.wrangler.dq.ConvertString

public class ConvertString
extends Object

Useful String conversion operations.

Field Summary

Fields

Modifier and Type	Field and Description
static String[]	WHITESPACE_CHARS

Constructor Summary

Constructors

Constructor and Description
ConvertString() This constructor is used to some cases but except removing a specify repeated String removeRepeatedChar(String).
ConvertString(String repeatStr) This constructor is used to remove a specify repeated String removeRepeatedChar(String) .

Method Summary

Modifier and Type	Method and Description
String	removeRepeatedChar(String input) Remove consecutive repeated characters by a specified char.
String	removeRepeatedWhitespaces(String input) Remove all repeated white spaces which include all strings in WHITESPACE_CHARS like as " ","\n","\r","\t".
String	removeTrailingAndLeading(String input) Remove trailing and leading characters and the remove Character is whitespace only.
String	removeTrailingAndLeading(String input, String character) Remove trailing and leading characters.
String	removeTrailingAndLeadingWhitespaces(String input) Remove trailing and leading characters which may be empty string, space string,\t,\n,\r,\f...any space, break related characters.

Methods inherited from class java.lang.Object

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

Field Detail

WHITESPACE_CHARS

public static final String[] WHITESPACE_CHARS

Constructor Detail

ConvertString

public ConvertString()

This constructor is used to some cases but except removing a specify repeated String removeRepeatedChar(String).

ConvertString

public ConvertString(String repeatStr)

This constructor is used to remove a specify repeated String removeRepeatedChar(String) .

Parameters:

repeatStr - it is a repeat String

Method Detail

removeTrailingAndLeadingWhitespaces

public String removeTrailingAndLeadingWhitespaces(String input)

Remove trailing and leading characters which may be empty string, space string,\t,\n,\r,\f...any space, break related characters.

Parameters:

input - - the input text.

Returns:

String

removeTrailingAndLeading

public String removeTrailingAndLeading(String input)

Remove trailing and leading characters and the remove Character is whitespace only.

Note: this is not equals input.trim() for example:
when the input is ("\t" + "abc "), this method will return ("\t" + "abc"),
but for trim method will return "abc"

Parameters:

input - - the input text.

Returns:

String

removeTrailingAndLeading

public String removeTrailingAndLeading(String input,
                                       String character)

Remove trailing and leading characters.

Parameters:

input - - the input text.

character - - the remove character.

Returns:

String.

removeRepeatedChar

public String removeRepeatedChar(String input)

Remove consecutive repeated characters by a specified char.

Parameters:

input - the source String

Returns:

the string with the source string removed if found

removeRepeatedWhitespaces

public String removeRepeatedWhitespaces(String input)

Remove all repeated white spaces which include all strings in WHITESPACE_CHARS like as " ","\n","\r","\t".

 removeRepeatedWhitespaces(null) = null
 removeRepeatedWhitespaces("")   = ""
 removeRepeatedWhitespaces("a  back\t\t\td") = "a back\td"
 

Parameters:

input - input the source String

Returns:

the string removed all whiteSpaces