Class WeightedContextMatcher

Create a new WeightedContextMatcher instance implementing the fuzzy matching mechanism.

Constructor

class WeightedContextMatcher(radius)

Arguments:

• radius –

  Maximum radius of the fingerprint. Values greater than

  four are not recommended.

Methods

equal

WeightedContextMatcher#equal(subject, offset, value, flag)

Arguments:

• subject –
• offset –
• value –
• flag –

Return true if subject at offset is equal to the candidate value. Override this method if your values need special handling.

matchContent

WeightedContextMatcher#matchContent(subject, offset, flag)

Arguments:

• subject –
• offset –
• flag –

Return 1 if every body-item of the pattern matches the candidates exactly. Otherwise return 0.

matchContext

WeightedContextMatcher#matchContext(subject, offset, flag)

Arguments:

• subject –
• offset –
• flag –

Return a number between 0 and 1 representing the match quality of the pattern context with the candidate.

matchQuality

WeightedContextMatcher#matchQuality(offset, offset, contentflag, contextflag)

Arguments:

• offset – An integer representing the offset to the subject.
• offset –
• contentflag –
• contextflag –

Return a number between zero and one representing the match quality of the pattern.

setPattern

WeightedContextMatcher#setPattern(body, head, tail)

Arguments:

• body – Array of context elements between head and tail
• head – Array of leading context elements
• tail – Array of trailing context elements

Set the pattern consisting of the body and the context which should be matched against candidates using matchQuality method subsequently.