Date: 2004-05-11T19:24:10
Editor: 69.240.50.229 <>
Wiki: Jakarta Lucene Wiki
Page: SearchNumericalFields
URL: http://wiki.apache.org/jakarta-lucene/SearchNumericalFields
no comment
Change Log:
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@@ -67,11 +67,11 @@
You can use a multiplier to make sure you don't have decimals if they cause
problems.(comment by sv)
- == Handling positive and negitive numbers. ==
+ == Handling positive and negative numbers. ==
- If you want a numerical field that may contain positive and negitive numbers, you
still need to format them as strings. What you must ensure is that for any numbers a
and b, if a<b then format(a)<format(b). The problem cases are
+ If you want a numerical field that may contain positive and negative numbers, you
still need to format them as strings. What you must ensure is that for any numbers a
and b, if a<b then format(a)<format(b). The problem cases are
* when one number is negative and the other is positve
- * when both are negitive, ie; -200 is less than -1, even though "-200" is
lexocographically '''greater''' than "-1"
+ * when both are negative, ie; -200 is less than -1, even though "-200" is
lexocographically '''greater''' than "-1"
The "trick" to handle these problems are:
* use a prefix char for positive and negative numbers so that a negative string is
always less than positive. '-' and '0' are suitable for this
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