com.pervasive.datarush.io

Class UnixStyleGlobbing.GlobDefinition

java.lang.Object

com.pervasive.datarush.io.UnixStyleGlobbing.GlobDefinition

Enclosing class:

UnixStyleGlobbing

public abstract static class UnixStyleGlobbing.GlobDefinition
extends Object

Provides information for performing globbing. This class parses glob patterns into a sequence of element patterns to be applied.

File systems implementations should implement a subclass of this one to provide parsing of glob patterns appropriate for their pathing syntax.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	GlobDefinition(String globPattern, String separators, String prefix) Defines a new globbing pattern.

Method Summary

Modifier and Type	Method and Description
List<String>	getElementPatterns() Gets the globbing patterns for each element.
abstract Path	getRootPath() Gets the initial path from which globbing starts.
protected String	parseDirectoryPattern(String pattern, int start, int end) Identifies the next element pattern between specified locations.
protected void	parsePattern(String pattern, List<String> directoryPatterns) Breaks a full globbing pattern into individual per-directory elements.

Methods inherited from class java.lang.Object

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

Constructor Detail

GlobDefinition

protected GlobDefinition(String globPattern,
                         String separators,
                         String prefix)

Defines a new globbing pattern.

Parameters:

globPattern - the full pattern for matching

separators - valid path element separators

prefix - a prefix to remove from the pattern, if present. Normally, this would be the file system prefix which, if removed, leaves only the hierarchical path.

Method Detail

getRootPath

public abstract Path getRootPath()

Gets the initial path from which globbing starts. Typically, this would be the root of the file system.

Returns:

the root path for applying globbing

getElementPatterns

public List<String> getElementPatterns()

Gets the globbing patterns for each element.

Returns:

parseDirectoryPattern

protected final String parseDirectoryPattern(String pattern,
                                             int start,
                                             int end)

Identifies the next element pattern between specified locations.

Parameters:

pattern - the complete globbing pattern

start - the index of the first character in the element

end - the upper bound on the element index

Returns:

the element pattern

parsePattern

protected void parsePattern(String pattern,
                            List<String> directoryPatterns)

Breaks a full globbing pattern into individual per-directory elements.

Parameters:

pattern - the pattern to parse

directoryPatterns - the container into which to store the path element patterns.