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RegexCapabilities.java API Doc Apache Lucene 2.2.0 1655 Sat Jun 16 22:21:10 BST 2007 org.apache.lucene.search.regex

RegexCapabilities

public interface RegexCapabilities

Defines basic operations needed by {@link RegexQuery} for a regular expression implementation.

Fields Summary
Constructors Summary
Methods Summary
public void compile(java.lang.String pattern)
Called by the constructor of {@link RegexTermEnum} allowing implementations to cache a compiled version of the regular expression pattern.
param
pattern regular expression pattern
public boolean match(java.lang.String string)
param
string
return
true if string matches the pattern last passed to {@link #compile}.
public java.lang.String prefix()
A wise prefix implementation can reduce the term enumeration (and thus performance) of RegexQuery dramatically!
return
static non-regex prefix of the pattern last passed to {@link #compile}. May return null.