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Java Source Code / Java Documentation » Net » lucene connector » org.apache.lucene.document

Source Cross Reference

Class Diagram

Java Document (Java Doc)

java.lang .Object

org.apache.lucene.document .NumberTools

NumberTools

public class NumberTools (Code)

Provides support for converting longs to Strings, and back again. The strings are structured so that lexicographic sorting order is preserved.

That is, if l1 is less than l2 for any two longs l1 and l2, then NumberTools.longToString(l1) is lexicographically less than NumberTools.longToString(l2). (Similarly for "greater than" and "equals".)

This class handles all long values (unlike org.apache.lucene.document.DateField ).

Field Summary
final public static String	MAX_STRING_VALUE
final public static String	MIN_STRING_VALUE
final public static int	STR_SIZE

Method Summary
public static String	longToString(long l) Converts a long to a String suitable for indexing.
public static long	stringToLong(String str) Converts a String that was returned by NumberTools.longToString back to a long.

Field Detail

MAX_STRING_VALUE
final public static String MAX_STRING_VALUE(Code)
	Equivalent to longToString(Long.MAX_VALUE)

MIN_STRING_VALUE
final public static String MIN_STRING_VALUE(Code)
	Equivalent to longToString(Long.MIN_VALUE)

STR_SIZE
final public static int STR_SIZE(Code)
	The length of (all) strings returned by NumberTools.longToString

Method Detail

longToString
public static String longToString(long l)(Code)
	Converts a long to a String suitable for indexing.

stringToLong
public static long stringToLong(String str)(Code)
	Converts a String that was returned by NumberTools.longToString back to a long. throws: IllegalArgumentException - if the input is null throws: NumberFormatException - if the input does not parse (it was not a String returned bylongToString()).

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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