org.aspectj.org.eclipse.jdt.internal.core.nd.java

Class FileFingerprint

java.lang.Object

org.aspectj.org.eclipse.jdt.internal.core.nd.java.FileFingerprint

public class FileFingerprint
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FileFingerprint.FingerprintTestResult

Field Summary

Fields

Modifier and Type	Field and Description
static long	NEVER_MODIFIED Sentinel value for time indicating a nonexistent fingerprint.
static long	UNKNOWN Sentinel value for time indicating that the timestamp was not recorded as part of the fingerprint.

Constructor Summary

Constructors

Constructor and Description
FileFingerprint(long time, long size, long hash)

Method Summary

Modifier and Type	Method and Description
static FileFingerprint	create(IPath path, IProgressMonitor monitor)
boolean	equals(java.lang.Object obj)
boolean	fileExists() Returns true iff the file existed at the time the fingerprint was computed.
static FileFingerprint	getEmpty()
long	getHash()
long	getSize()
long	getTime()
int	hashCode()
FileFingerprint.FingerprintTestResult	test(IPath path, IProgressMonitor monitor) Compares the given File with the receiver.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

NEVER_MODIFIED

public static final long NEVER_MODIFIED

Sentinel value for time indicating a nonexistent fingerprint. This is used for the timestamp of nonexistent files and for the getEmpty() singleton.

See Also:

Constant Field Values

UNKNOWN

public static final long UNKNOWN

Sentinel value for time indicating that the timestamp was not recorded as part of the fingerprint. This is normally used to indicate that the file's timestamp was so close to the current system time at the time the fingerprint was computed that subsequent changes in the file might not be detected. In such cases, timestamps are an unreliable method for determining if the file has changed and so are not included as part of the fingerprint.

See Also:

Constant Field Values

Constructor Detail

FileFingerprint

public FileFingerprint(long time,
                       long size,
                       long hash)

Method Detail

getEmpty

public static final FileFingerprint getEmpty()

create

public static final FileFingerprint create(IPath path,
                                           IProgressMonitor monitor)
                                    throws CoreException

Throws:

CoreException

getTime

public long getTime()

getHash

public long getHash()

getSize

public long getSize()

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

fileExists

public boolean fileExists()

Returns true iff the file existed at the time the fingerprint was computed.

Returns:

true iff the file existed at the time the fingerprint was computed.

test

public FileFingerprint.FingerprintTestResult test(IPath path,
                                                  IProgressMonitor monitor)
                                           throws CoreException

Compares the given File with the receiver. If the fingerprint matches (ie: the file

Throws:

CoreException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object