org.apache.parquet.glob

Class GlobExpander

java.lang.Object

org.apache.parquet.glob.GlobExpander

public final class GlobExpander
extends Object

Implementation of Strings.expandGlob(String)

Method Summary

Modifier and Type	Method and Description
static List<String>	expand(String globPattern) Expands a string with braces ("{}") into all of its possible permutations.

Methods inherited from class java.lang.Object

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

Method Detail

expand

public static List<String> expand(String globPattern)

Expands a string with braces ("{}") into all of its possible permutations. We call anything inside of {} braces a "one-of" group.

The only special characters in this glob syntax are '}', '{' and ','

The top-level pattern must not contain any commas, but a "one-of" group separates its elements with commas, and a one-of group may contain sub one-of groups.

For example: start{a,b,c}end -> startaend, startbend, startcend start{a,{b,c},d} -> startaend, startbend, startcend, startdend {a,b,c} -> a, b, c start{a, b{x,y}} -> starta, startbx, startby

Parameters:

globPattern - a string in the format described above

Returns:

a list of all the strings that would satisfy globPattern, including duplicates