proper.imp
Class Fingerprint

java.lang.Object
  proper.core.ProperObject
      proper.imp.Fingerprint

All Implemented Interfaces:

java.lang.Comparable, ProperInterface

public class Fingerprint
extends ProperObject
implements java.lang.Comparable

This class handles Fingerprints, i.e. comparing them and also taking care of NULLs.

Version:

$Revision: 1.2 $

Author:

FracPete

Field Summary

static java.lang.String	DATE
static java.lang.String	DOUBLE
static java.lang.String	INTEGER
static java.lang.String	LIST
static java.lang.String	LONG
static java.lang.String	NULL
static java.lang.String	PREDICATE
static java.lang.String	SQL_DATE
static java.lang.String	STRING

Fields inherited from interface proper.core.ProperInterface

VERSION

Constructor Summary

Fingerprint(java.lang.Object value)
initializes the object

Method Summary

int	compareTo(java.lang.Object o) compares the given object with itself
boolean	equals(java.lang.Object obj) checks whether the fingerprint is the same
java.lang.String	getSuperClass(Fingerprint fp) returns the smallest class with which this and the given object can be described
static java.lang.String	getSuperClass(Fingerprint fp1, Fingerprint fp2) returns the smallest class with which both objects can be described.
java.lang.String	getSuperClass(java.lang.Object o) returns the smallest class with which this and the given object can be described
static java.lang.String	getSuperClass(java.lang.Object o1, java.lang.Object o2) returns the smallest class with which both objects can be described.
java.lang.Object	getValue() returns the stored value
boolean	isNull() checks whether the stored value depicts a NULL value
static boolean	isNull(java.lang.Object value) checks whether the given value depicts a NULL value
static void	main(java.lang.String[] args) for testing only
java.lang.String	toString() returns the class name of the value

Methods inherited from class proper.core.ProperObject

addListener, addOutput, classInVerbose, debugprint, debugprint, debugprint, debugprint, debugprintln, debugprintln, debugprintln, debugprintln, debugprintln, getListeners, getRuntime, getVerbose, getVerboseLevel, getVerboseLevelForClass, getVerboseString, getVerboseStringForClass, notifyListener, notifyListeners, print, print, print, print, println, println, println, println, println, printMemory, removeListener, setOutput, setVerbose, setVerboseLevel, setVerboseString

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

STRING

public static final java.lang.String STRING

See Also:

Constant Field Values

INTEGER

public static final java.lang.String INTEGER

See Also:

Constant Field Values

LONG

public static final java.lang.String LONG

See Also:

Constant Field Values

DOUBLE

public static final java.lang.String DOUBLE

See Also:

Constant Field Values

DATE

public static final java.lang.String DATE

See Also:

Constant Field Values

SQL_DATE

public static final java.lang.String SQL_DATE

See Also:

Constant Field Values

LIST

public static final java.lang.String LIST

See Also:

Constant Field Values

PREDICATE

public static final java.lang.String PREDICATE

See Also:

Constant Field Values

NULL

public static final java.lang.String NULL

See Also:

Constant Field Values

Constructor Detail

Fingerprint

public Fingerprint(java.lang.Object value)

initializes the object

Parameters:

value - the object to get the fingerprint from

Method Detail

getValue

public java.lang.Object getValue()

returns the stored value

isNull

public boolean isNull()

checks whether the stored value depicts a NULL value

isNull

public static boolean isNull(java.lang.Object value)

checks whether the given value depicts a NULL value

compareTo

public int compareTo(java.lang.Object o)
              throws java.lang.ClassCastException

compares the given object with itself

Specified by:

compareTo in interface java.lang.Comparable

Throws:

java.lang.ClassCastException

equals

public boolean equals(java.lang.Object obj)

checks whether the fingerprint is the same

Overrides:

equals in class java.lang.Object

getSuperClass

public java.lang.String getSuperClass(java.lang.Object o)

returns the smallest class with which this and the given object can be described

See Also:

getSuperClass(Object, Object)

getSuperClass

public java.lang.String getSuperClass(Fingerprint fp)

returns the smallest class with which this and the given object can be described

See Also:

getSuperClass(Object, Object)

getSuperClass

public static java.lang.String getSuperClass(Fingerprint fp1,
                                             Fingerprint fp2)

returns the smallest class with which both objects can be described. E.g. for Integer and Double it is Double, or for Double and Double it is Double, but for Integer and Date it is String.

getSuperClass

public static java.lang.String getSuperClass(java.lang.Object o1,
                                             java.lang.Object o2)

returns the smallest class with which both objects can be described. E.g. for Integer and Double it is Double, or for Double and Double it is Double, but for Integer and Date it is String.

toString

public java.lang.String toString()

returns the class name of the value

Overrides:

toString in class ProperObject

main

public static void main(java.lang.String[] args)

for testing only