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Datatable: Lazy Loading and sort listener in wrong call order

See original GitHub issue

Describe the defect When I use a sort listener in a datatable with lazy loading, the load method is called before the sort listener method. It works fine with a page listener.

Environment:

PF Version: 10.0
JSF + version: MyFaces 2.3.6
Affected browsers: Chrome

To Reproduce Steps to reproduce the behavior: There is no showcase. See the code below.

Expected behavior In Version 8 the sort listener was called before the load method

Example XHTML

<p:dataTable value="#{controller.lazyDataModel}"
             lazy="true"
             sortMode="multiple"
             ...>

    <p:ajax event="sort" listener="#{controller.sortListener()}" process="@this" />
    <p:ajax event="page" listener="#{controller.pageListener()}" process="@this" />

...
</p:dataTable>

Example Bean

@Named
@ViewScoped
public class Controller implements Serializable {

    ...

    public void sortListener() {
        sortEvent = true;
    }

    public void pageListener() {
        pageEvent = true;
    }
}

Issue Analytics

State:
Created 2 years ago
Comments:7 (7 by maintainers)

Top GitHub Comments

1reaction

mellowarecommented, May 18, 2021

Reproducer: pf-7164.zip

10:0.0:

LazyDataModel.load() called
TestView.sort() called

0reactions

mellowarecommented, May 18, 2021

Here is what happens when I dump the stack when the page first loads…

LazyDataModel.load() called
java.base/java.lang.Thread.getStackTrace(Thread.java:1607)
org.primefaces.test.LazyCustomerDataModel.load(LazyCustomerDataModel.java:68)
org.primefaces.component.datatable.DataTable.loadLazyData(DataTable.java:459)
org.primefaces.component.datatable.DataTableRenderer.preRender(DataTableRenderer.java:126)
org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:93)
javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:920)

But when the field is sorted you can see the “lazy” method is called in the SortFeature.

LazyDataModel.load() called
java.base/java.lang.Thread.getStackTrace(Thread.java:1607)
org.primefaces.test.LazyCustomerDataModel.load(LazyCustomerDataModel.java:68)
org.primefaces.component.datatable.DataTable.loadLazyData(DataTable.java:459)
org.primefaces.component.datatable.feature.SortFeature.decode(SortFeature.java:103)
org.primefaces.component.datatable.DataTableRenderer.decode(DataTableRenderer.java:72)
javax.faces.component.UIComponentBase.decode(UIComponentBase.java:832)
org.primefaces.component.api.UIData.processDecodes(UIData.java:117)

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