GZIPOutInterceptor compiles Patterns constantly; they should be compiled once
and reused
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Key: CXF-4134
URL: https://issues.apache.org/jira/browse/CXF-4134
Project: CXF
Issue Type: Improvement
Components: JAX-RS
Affects Versions: 2.5.2
Environment: Any
Reporter: Matt Bishop
Priority: Minor
GZIPOutInterceptor (lines 193 to 195) use two regular expressions to search for
a pattern in a string. They compile the regex on every call, and on every pass
through a loop:
Pattern zeroQ = Pattern.compile(";\\s*q=0(?:\\.0+)?$");
for (String headerLine : acceptEncodingHeader) {
String[] encodings = headerLine.trim().split("[,\\s]*,\\s*");
Compiling patterns is not cheap; please move these patterns (including the
String.split() pattern) into the constructor or a static member so we don't
keep recompiling the pattern.
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