org.thales.punch.libraries.punchlang.impl

Class PunchGrokUtils

java.lang.Object

org.thales.punch.libraries.punchlang.impl.PunchGrokUtils

public final class PunchGrokUtils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static String	SEMANTIC

Method Summary

Modifier and Type	Method and Description
static int	getIndexForSemantic(String semantic) Punch uses grok semantic string like "punch00", "punch01" etc ..
static List<String>	getRepeatedMatches(String input, String regex) Given an input string and a standard regex pattern, return the repeated matches as a list of Strings.

Methods inherited from class java.lang.Object

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

Field Detail

SEMANTIC

public static final String SEMANTIC

See Also:

Constant Field Values

Method Detail

getIndexForSemantic

public static int getIndexForSemantic(String semantic)

Punch uses grok semantic string like "punch00", "punch01" etc .. This method returns the terminated number, as an int. Watch out this must be efficient, it's called many many times

Parameters:

semantic - the semantic name inside a named regex or a grok pattern.

Returns:

the corresponding index

getRepeatedMatches

public static List<String> getRepeatedMatches(String input,
                                              String regex)

Given an input string and a standard regex pattern, return the repeated matches as a list of Strings. This method works by using the java.util.regex.Matcher.find method to repeatedly match the pattern.

Beware : say you have [abc][def] as input. If you use the regex :

 "\\[[a-z]\*\]"
 

you will get { "[abc]", "[def]" }, but with

 "\\[([a-z]*)\\]"
 

you will get { "abc", "def" }

Parameters:

input - the input String

regex - the regex to apply

Returns:

a list, potentially empty if there is no match