HBase Java Regular Expressions Support

x

The character x

\\

The backslash character

\0n

The character with octal value 0n (0 <= n <= 7)

\0nn

The character with octal value 0nn (0 <= n <= 7)

\xhh

The character with hexadecimal value 0xhh

\t

The tab character ('\u0009')

\n

The newline (line feed) character ('\u000A')

\r

The carriage-return character ('\u000D')

\f

The form-feed character ('\u000C')

\a

The alert (bell) character ('\u0007')

\e

The escape character ('\u001B')

\cx

The control character corresponding to x

[abc]

a, b, or c (simple class)

[Supported Regular Expressions in HPE Ezmeral Data Fabric Database Tables^abc]

Any character except a, b, or c (negation)

[a-zA-Z]

a through z or A through Z, inclusive (range)

.

Any character (may or may not match line terminators)

\d

A digit: [0-9]

\D

A non-digit: [Supported Regular Expressions in HPE Ezmeral Data Fabric Database Tables^0-9]

\s

A whitespace character: [ \t\n\x0B\f\r]

\S

A non-whitespace character: [Supported Regular Expressions in HPE Ezmeral Data Fabric Database Tables^\s]

\w

A word character: [a-zA-Z_0-9]

\W

A non-word character: [Supported Regular Expressions in HPE Ezmeral Data Fabric Database Tables^\w]

\p{Lu}

An uppercase letter (simple category)

\p{Sc}

A currency symbol

^

The beginning of a line

$

The end of a line

\b

A word boundary

\B

A non-word boundary

\A

The beginning of the input

\G

The end of the previous match

\Z

The end of the input but for the final terminator, if any

\z

The end of the input

X?

X, once or not at all

X*

X, zero or more times

X+

X, one or more times

X{n}

X, exactly n times

X{n,}

X, at least n times

X{n,m}

X, at least n but not more than m times

X??

X, once or not at all

X*?

X, zero or more times

X+?

X, one or more times

X{n}?

X, exactly n times

X{n,}?

X, at least n times

X{n,m}?

X, at least n but not more than m times

X?+

X, once or not at all

X*+

X, zero or more times

X++

X, one or more times

X{n}+

X, exactly n times

X{n,}+

X, at least n times

X{n,m}+

X, at least n but not more than m times

XY

X followed by Y

X|Y

Either X or Y

(X)

X, as a capturing group

\n

Whatever the nth capturing group matches

\

Nothing, but quotes the following character

\Q

Nothing, but quotes all characters until \E

\E

Nothing, but ends quoting started by \Q

(?:X)

X, as a non-capturing group

(?=X)

X, via zero-width positive lookahead

(?!X)

X, via zero-width negative lookahead

(?<=X)

X, via zero-width positive lookbehind

(?<!X)

X, via zero-width negative lookbehind

(?>X)

X, as an independent, non-capturing group