io.delta.kernel.internal.fs

Class Path

Object

io.delta.kernel.internal.fs.Path

All Implemented Interfaces:

java.io.ObjectInputValidation, java.io.Serializable, Comparable<Path>

public class Path
extends Object
implements Comparable<Path>, java.io.Serializable, java.io.ObjectInputValidation

Names a file or directory in a FileSystem. Path strings use slash as the directory separator.

Taken from https://github.com/apache/hadoop/blob/branch-3.3 .4/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/Path.java

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static String	CUR_DIR The current directory, ".".
static String	SEPARATOR The directory separator, a slash.
static char	SEPARATOR_CHAR The directory separator, a slash, as a character.
static boolean	WINDOWS Whether the current host is a Windows machine.

Constructor Summary

Constructors

Constructor and Description
Path(Path parent, Path child) Create a new Path based on the child path resolved against the parent path.
Path(Path parent, String child) Create a new Path based on the child path resolved against the parent path.
Path(String pathString) Construct a path from a String.
Path(String parent, Path child) Create a new Path based on the child path resolved against the parent path.
Path(String parent, String child) Create a new Path based on the child path resolved against the parent path.
Path(String scheme, String authority, String path) Construct a Path from components.
Path(java.net.URI aUri) Construct a path from a URI

Method Summary

Modifier and Type	Method and Description
int	compareTo(Path o)
boolean	equals(Object o)
String	getName() Returns the final component of this path.
static String	getName(String pathString)
Path	getParent() Returns the parent of a path or null if at root.
int	hashCode()
boolean	isAbsolute() Returns true if the path component (i.e.
boolean	isRoot() Returns true if and only if this path represents the root of a file system.
boolean	isUriPathAbsolute() Returns true if the path component (i.e.
String	toString()
java.net.URI	toUri() Convert this Path to a URI.
void	validateObject() Validate the contents of a deserialized Path, so as to defend against malicious object streams.

Methods inherited from class Object

getClass, notify, notifyAll, wait, wait, wait

Field Detail

SEPARATOR

public static final String SEPARATOR

The directory separator, a slash.

See Also:

Constant Field Values

SEPARATOR_CHAR

public static final char SEPARATOR_CHAR

The directory separator, a slash, as a character.

See Also:

Constant Field Values

CUR_DIR

public static final String CUR_DIR

The current directory, ".".

See Also:

Constant Field Values

WINDOWS

public static final boolean WINDOWS

Whether the current host is a Windows machine.

Constructor Detail

Path

public Path(String parent,
            String child)

Create a new Path based on the child path resolved against the parent path.

Parameters:

parent - the parent path

child - the child path

Path

public Path(Path parent,
            String child)

Create a new Path based on the child path resolved against the parent path.

Parameters:

parent - the parent path

child - the child path

Path

public Path(String parent,
            Path child)

Create a new Path based on the child path resolved against the parent path.

Parameters:

parent - the parent path

child - the child path

Path

public Path(Path parent,
            Path child)

Create a new Path based on the child path resolved against the parent path.

Parameters:

parent - the parent path

child - the child path

Path

public Path(String pathString)
     throws IllegalArgumentException

Construct a path from a String. Path strings are URIs, but with unescaped elements and some additional normalization.

Parameters:

pathString - the path string

Throws:

IllegalArgumentException

Path

public Path(java.net.URI aUri)

Construct a path from a URI

Parameters:

aUri - the source URI

Path

public Path(String scheme,
            String authority,
            String path)

Construct a Path from components.

Parameters:

scheme - the scheme

authority - the authority

path - the path

Method Detail

toUri

public java.net.URI toUri()

Convert this Path to a URI.

Returns:

this Path as a URI

isUriPathAbsolute

public boolean isUriPathAbsolute()

Returns true if the path component (i.e. directory) of this URI is absolute.

Returns:

whether this URI's path is absolute

isAbsolute

public boolean isAbsolute()

Returns true if the path component (i.e. directory) of this URI is absolute. This method is a wrapper for isUriPathAbsolute().

Returns:

whether this URI's path is absolute

isRoot

public boolean isRoot()

Returns true if and only if this path represents the root of a file system.

Returns:

true if and only if this path represents the root of a file system

getName

public String getName()

Returns the final component of this path.

Returns:

the final component of this path

getParent

public Path getParent()

Returns the parent of a path or null if at root.

Returns:

the parent of a path or null if at root

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

compareTo

public int compareTo(Path o)

Specified by:

compareTo in interface Comparable<Path>

validateObject

public void validateObject()
                    throws java.io.InvalidObjectException

Validate the contents of a deserialized Path, so as to defend against malicious object streams.

Specified by:

validateObject in interface java.io.ObjectInputValidation

Throws:

java.io.InvalidObjectException - if there's no URI

getName

public static String getName(String pathString)