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| Summary: | use precompiled XPath queries (where it makes sense) | ||
|---|---|---|---|
| Product: | uml | Reporter: | Viktor Lapitski <lvv> |
| Component: | General | Assignee: | issues@uml <issues> |
| Status: | NEW --- | ||
| Severity: | blocker | CC: | issues |
| Priority: | P3 | Keywords: | PERFORMANCE |
| Version: | 6.x | ||
| Hardware: | All | ||
| OS: | All | ||
| Issue Type: | TASK | Exception Reporter: | |
| Bug Depends on: | |||
| Bug Blocks: | 102410 | ||
this is placeholder for record purposes. Using precompiled XPath statements can, supposedly in cases where the query is executed frequently enough to provide a valid reason for a trade-off with increased, even when temporary, memory storage by precompiled query size amount, significantly improve performance time-wise (as well as possibly memory-wise by reducing memory thrashing). An experiment with replacing of simple query ("/XMI/XMI.content/UML:Project") by precompiled version (Dom4jXPath) of it in the very frequently executed getProject() method in uml/core/src/org/netbeans/modules/uml/core/metamodel/core/foundation/UMLXMLManip.java brought about 20+% improvement alone on 10 minute long webreport.