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IDProjectCategoryView StatusDate SubmittedLast Update
0037643Openbravo ERPA. Platformpublic2018-01-15 18:242018-02-22 18:18
ReporterAugustoMauch 
Assigned ToAugustoMauch 
PrioritynormalSeverityminorReproducibilityhave not tried
StatusclosedResolutionfixed 
PlatformOS5OS Version
Product Version 
Target VersionFixed in Version3.0PR18Q2 
Merge Request Status
Review Assigned Tocaristu
OBNetwork customerNo
Web browser
ModulesCore
Support ticket
Regression level
Regression date
Regression introduced in release
Regression introduced by commit
Triggers an Emergency PackNo
Summary0037643: Improve the use of the ScriptEngine by reusing engine instance
DescriptionCurrently, each time that we want to eval a javascript expression using the ScriptEngine, we are create a new ScriptEngineManager and a new ScriptEngine instance. Then the bindings are set to the instance, and the expression is evaluated.

This can be improved by sharing a single instance of the Script, since creating the ScriptEngine can sometimes be expensive, and the class is thread safe (see [1])

[1] https://stackoverflow.com/a/30159424 [^]
Steps To Reproduce-
Proposed SolutionInstead of creating a new ScriptEngine instance each time a javascript expression needs to be evaluated, reuse the same one and set the bindings to each evaluation, instead of to the engine itself.
Additional Information
TagsPerformance
Relationships
Attached Files
Issue History
Date ModifiedUsernameFieldChange
2018-01-15 18:24AugustoMauchNew Issue
2018-01-15 18:24AugustoMauchAssigned To => AugustoMauch
2018-01-15 18:24AugustoMauchOBNetwork customer => No
2018-01-15 18:24AugustoMauchModules => Core
2018-01-15 18:24AugustoMauchTriggers an Emergency Pack => No
2018-01-16 17:17hgbotCheckin
2018-01-16 17:17hgbotNote Added: 0101727
2018-01-16 17:17hgbotStatusnew => resolved
2018-01-16 17:17hgbotResolutionopen => fixed
2018-01-16 17:17hgbotFixed in SCM revision => http://code.openbravo.com/erp/devel/pi/rev/120a6a75f9b757f20a7434d5cbb9d0cfe271a831 [^]
2018-01-16 18:16caristuReview Assigned To => caristu
2018-01-19 07:59alostaleTag Attached: Performance
2018-01-19 14:33hgbotCheckin
2018-01-19 14:33hgbotNote Added: 0101796
2018-01-19 14:34caristuNote Added: 0101797
2018-01-19 14:34caristuStatusresolved => closed
2018-01-19 14:34caristuFixed in Version => 3.0PR18Q1
2018-01-22 11:17caristuFixed in Version3.0PR18Q1 => 3.0PR18Q2
2018-02-22 18:18hudsonbotCheckin
2018-02-22 18:18hudsonbotNote Added: 0102659
2018-02-22 18:18hudsonbotCheckin
2018-02-22 18:18hudsonbotNote Added: 0102667

Notes
(0101727)
hgbot   
2018-01-16 17:17   
Repository: erp/devel/pi
Changeset: 120a6a75f9b757f20a7434d5cbb9d0cfe271a831
Author: Augusto Mauch <augusto.mauch <at> openbravo.com>
Date: Tue Jan 16 17:16:51 2018 +0100
URL: http://code.openbravo.com/erp/devel/pi/rev/120a6a75f9b757f20a7434d5cbb9d0cfe271a831 [^]

Fixes issue 37643: OBScriptEngine can be used to evaluate javascript scripts

There were four classes that were creating a new instance of ScriptEngine each time they needed to evaluate a javascript script. This was not the better way
to do it, since creating a ScriptEngine instance can be expensive, and that class is thread safety if properly used (i.e. by setting the bindings to each
evaluation instead of to the script engine itself).

A new singleton class has been added, OBScriptEngine, that is now used by all the classes that need to evaluate javascript scripts.

---
M modules/org.openbravo.client.application/src/org/openbravo/client/application/ParameterUtils.java
M modules/org.openbravo.client.application/src/org/openbravo/client/application/window/OBViewFieldHandler.java
M modules/org.openbravo.userinterface.selector/src/org/openbravo/userinterface/selector/SelectorDefaultFilterActionHandler.java
M src/org/openbravo/base/expression/Evaluator.java
A src/org/openbravo/base/expression/OBScriptEngine.java
---
(0101796)
hgbot   
2018-01-19 14:33   
Repository: erp/devel/pi
Changeset: 8dbb68df297c6ae5ad18149c9389ff399252b422
Author: Carlos Aristu <carlos.aristu <at> openbravo.com>
Date: Fri Jan 19 14:15:15 2018 +0100
URL: http://code.openbravo.com/erp/devel/pi/rev/8dbb68df297c6ae5ad18149c9389ff399252b422 [^]

related to issue 37643: avoid definining getInstance() method as synchronized

  The instance variable is now initialized on first class load instead.

---
M src/org/openbravo/base/expression/OBScriptEngine.java
---
(0101797)
caristu   
2018-01-19 14:34   
Code reviewed + tested OK.
(0102659)
hudsonbot   
2018-02-22 18:18   
A changeset related to this issue has been promoted main and to the
Central Repository, after passing a series of tests.

Promotion changeset: https://code.openbravo.com/erp/devel/main/rev/980a6ad5bbf5 [^]
Maturity status: Test
(0102667)
hudsonbot   
2018-02-22 18:18   
A changeset related to this issue has been promoted main and to the
Central Repository, after passing a series of tests.

Promotion changeset: https://code.openbravo.com/erp/devel/main/rev/980a6ad5bbf5 [^]
Maturity status: Test