Package com.bazaarvoice.jolt.common.pathelement

Class StarDoublePathElement

java.lang.Object

com.bazaarvoice.jolt.common.pathelement.BasePathElement

com.bazaarvoice.jolt.common.pathelement.StarDoublePathElement

All Implemented Interfaces:

MatchablePathElement, PathElement, StarPathElement

public class StarDoublePathElement
extends BasePathElement
implements StarPathElement

PathElement for the a double "*" wildcard such as tag-*-*. In this case we can avoid doing any regex work by doing String begins, ends and mid element exists.

Field Summary

Fields

Modifier and Type	Field	Description
private java.lang.String	mid
private java.lang.String	prefix
private java.lang.String	suffix

Constructor Summary

Constructors

Constructor	Description
StarDoublePathElement(java.lang.String key)	+

Method Summary

Modifier and Type	Method	Description
private int	finMidIndex(java.lang.String literal)	The assumption here is: * means 1 or more characters.
java.lang.String	getCanonicalForm()	Get the canonical form of this PathElement.
MatchedElement	match(java.lang.String dataKey, WalkedPath walkedPath)	See if this PathElement matches the given dataKey.
boolean	stringMatch(java.lang.String literal)	Method to see if a candidate key would match this PathElement.

Methods inherited from class com.bazaarvoice.jolt.common.pathelement.BasePathElement

getRawKey, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.bazaarvoice.jolt.common.pathelement.PathElement

getRawKey

Field Detail

prefix

private final java.lang.String prefix

suffix

private final java.lang.String suffix

mid

private final java.lang.String mid

Constructor Detail

StarDoublePathElement

public StarDoublePathElement(java.lang.String key)

+

Parameters:

key - : should be a String with two "*" elements.

Method Detail

stringMatch

public boolean stringMatch(java.lang.String literal)

Description copied from interface: StarPathElement

Method to see if a candidate key would match this PathElement.

Specified by:

stringMatch in interface StarPathElement

Parameters:

literal - test to see if the provided string will match this Element's regex

Returns:

true if the provided literal will match this Element's regex

finMidIndex

private int finMidIndex(java.lang.String literal)

The assumption here is: * means 1 or more characters. So, if we can find the mid 1 char after the prefix ends and 1 char before the suffix starts, we have found a mid match. Also, it will be the first occurrence of the mid in the literal, so we are not 'greedy' to capture as much as in the '*'

match

public MatchedElement match(java.lang.String dataKey,
                            WalkedPath walkedPath)

Description copied from interface: MatchablePathElement

See if this PathElement matches the given dataKey. If it does not match, this method returns null. If this PathElement does match, it returns a LiteralPathElement with subKeys filled in.

Specified by:

match in interface MatchablePathElement

Parameters:

dataKey - String key value from the input data

walkedPath - "up the tree" list of LiteralPathElements, that may be used by this key as it is computing its match

Returns:

null or a matched LiteralPathElement

getCanonicalForm

public java.lang.String getCanonicalForm()

Description copied from interface: PathElement

Get the canonical form of this PathElement. Really only interesting for the Reference Path element, where it will expand "&" to "&0(0)".

Specified by:

getCanonicalForm in interface PathElement

Returns:

canonical String version of this PathElement