[jboss-jira] [JBoss JIRA] (DROOLS-3056) [DMN Designer] Data Types - List View Performance - The view items take 100ms to be instantiated

[Guilherme Carreiro (JIRA)]

Guilherme Carreiro created DROOLS-3056:
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             Summary: [DMN Designer] Data Types - List View Performance - The view items take 100ms to be instantiated
                 Key: DROOLS-3056
                 URL: https://issues.jboss.org/browse/DROOLS-3056
             Project: Drools
          Issue Type: Enhancement
          Components: DMN Editor
            Reporter: Guilherme Carreiro
            Assignee: Guilherme Carreiro


The creation of a new `DataTypeListItem` [here|https://github.com/kiegroup/kie-wb-common/blob/7f9a51f866fca11f7e7b10bc74a1d86591a7bf9c/kie-wb-common-dmn/kie-wb-common-dmn-client/src/main/java/org/kie/workbench/common/dmn/client/editors/types/listview/DataTypeList.java#L110] takes 100ms. This impacts the load time of the Data Types dialog when the user has many data types (e.g. more than 50).

To solve this problem, we can pre-instantiate a poll of views and re-use them or take new views from this pool. I just validate this idea with a PoC, and I could reduce 70% of the load time.




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