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Posted to taglibs-dev@jakarta.apache.org by bu...@apache.org on 2002/10/23 10:52:36 UTC
DO NOT REPLY [Bug 13873] New: -
CacheEntry does not compute the proper size in bytes
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=13873
CacheEntry does not compute the proper size in bytes
Summary: CacheEntry does not compute the proper size in bytes
Product: Taglibs
Version: 1.0
Platform: PC
OS/Version: Other
Status: NEW
Severity: Normal
Priority: Other
Component: Cache Taglib
AssignedTo: taglibs-dev@jakarta.apache.org
ReportedBy: chevalier@mkms.xerox.com
LRUCache.CacheEntry uses String.length() to compute the size of a string in
bytes. The specification states that String.length() return the number of 16-
bit Unicode characters in the string. Unicode characters are usually
represented using two bytes. Hence the real size is actually twice as big as
the store one.
Another minor issue is that size was only registered when lifetime was superior
to zero.
Below is a modified version of the constructor:
public CacheEntry(String value) {
this.value = value;
if (lifetime > 0) {
this.expiration = (new Date()).getTime() + lifetime;
}
// Pitch's fix: String.length() return the number of 16-bit Unicode
// characters in the string. Unicode characters are usually represented
// using two bytes. For Chinese characters or new Unicode schema, we
// would be closer to reality by calling: String.getBytes().length
this.size = 2 * value.length();
}
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