Package org.apache.jackrabbit.oak.plugins.document

Class Path

java.lang.Object

org.apache.jackrabbit.oak.plugins.document.Path

All Implemented Interfaces:

Comparable<Path>, CacheValue

public final class Path
extends Object
implements CacheValue, Comparable<Path>

The Path class is closely modeled after the semantics of PathUtils in oak-commons. Corresponding methods in this class can be used as a replacement for the methods in PathUtils on Path objects.

Field Summary

Fields

Modifier and Type	Field	Description
static Path	ROOT

Constructor Summary

Constructors

Constructor	Description
Path(@NotNull String name)	Creates a relative path with a single name element.
Path(@NotNull Path parent, @NotNull String name)	Creates a new Path from the given parent Path.

Method Summary

Modifier and Type	Method	Description
int	compareTo(@NotNull Path other)
@NotNull Iterable<String>	elements()	Returns the names of the path elements with increasing getDepth() starting at depth 1.
boolean	equals(Object obj)
static @NotNull Path	fromString(@NotNull String path)	Creates a Path from a String.
@NotNull Path	getAncestor(int nth)	Get the nth ancestor of a path.
int	getDepth()	The depth of this path.
int	getMemory()	The estimated amount of memory used by this object, in bytes.
@NotNull String	getName()	Returns the name of this path.
@Nullable Path	getParent()	The parent of this path or null if this path does not have a parent.
int	hashCode()
boolean	isAbsolute()
boolean	isAncestorOf(@NotNull Path other)	Return true if this path is an ancestor of the other path, otherwise false.
boolean	isRoot()	Returns true if this is the ROOT path; false otherwise.
int	length()
String	toString()
@NotNull StringBuilder	toStringBuilder(@NotNull StringBuilder sb)	Appends the String representation of this Path to the passed StringBuilder.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

ROOT

public static final Path ROOT

Constructor Detail

Path

public Path(@NotNull
            @NotNull Path parent,
            @NotNull
            @NotNull String name)

Creates a new Path from the given parent Path. The name of the new Path cannot be the empty String.

Parameters:

parent - the parent Path.

name - the name of the new Path.

Throws:

IllegalArgumentException - if the name is empty.

Path

public Path(@NotNull
            @NotNull String name)

Creates a relative path with a single name element. The name cannot be the empty String.

Parameters:

name - the name of the first path element.

Throws:

IllegalArgumentException - if the name is empty.

Method Detail

getName

@NotNull
public @NotNull String getName()

Returns the name of this path. The ROOT is the only path with an empty name. That is a String with length zero.

Returns:

the name of this path.

elements

@NotNull
public @NotNull Iterable<String> elements()

Returns the names of the path elements with increasing getDepth() starting at depth 1.

Returns:

the names of the path elements.

isRoot

public boolean isRoot()

Returns true if this is the ROOT path; false otherwise.

Returns:

whether this is the ROOT path.

getParent

@Nullable
public @Nullable Path getParent()

The parent of this path or null if this path does not have a parent. The ROOT path and the first path element of a relative path do not have a parent.

Returns:

the parent of this path or null if this path does not have a parent.

length

public int length()

Returns:

the number of characters of the String representation of this path.

getDepth

public int getDepth()

The depth of this path. The ROOT has a depth of 0. The path /foo/bar as well as bar/baz have depth 2.

Returns:

the depth of the path.

getAncestor

@NotNull
public @NotNull Path getAncestor(int nth)

Get the nth ancestor of a path. The 1st ancestor is the parent path, 2nd ancestor the grandparent path, and so on...

If nth <= 0, then this path is returned.

Parameters:

nth - indicates the ancestor level for which the path should be calculated.

Returns:

the ancestor path

isAncestorOf

public boolean isAncestorOf(@NotNull
                            @NotNull Path other)

Return true if this path is an ancestor of the other path, otherwise false.

Parameters:

other - the other path.

Returns:

whether this path is an ancestor of the other path.

isAbsolute

public boolean isAbsolute()

Returns:

true if this is an absolute path; false otherwise.

fromString

@NotNull
public static @NotNull Path fromString(@NotNull
                                       @NotNull String path)
                                throws IllegalArgumentException

Creates a Path from a String.

Parameters:

path - the String to parse.

Returns:

the Path from the String.

Throws:

IllegalArgumentException - if the path is the empty String.

toStringBuilder

@NotNull
public @NotNull StringBuilder toStringBuilder(@NotNull
                                              @NotNull StringBuilder sb)

Appends the String representation of this Path to the passed StringBuilder. See also toString().

Parameters:

sb - the StringBuilder this Path is appended to.

Returns:

the passed StringBuilder.

getMemory

public int getMemory()

Description copied from interface: CacheValue

The estimated amount of memory used by this object, in bytes.

Specified by:

getMemory in interface CacheValue

Returns:

the estimated number of bytes

compareTo

public int compareTo(@NotNull
                     @NotNull Path other)

Specified by:

compareTo in interface Comparable<Path>

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object