DataTable - Lazy

DataTable has built-in support to deal with huge datasets. In order to enable lazy loading, a LazyDataModel needs to be implemented to query the datasource when pagination, sorting, filtering or live scrolling happens. This example uses an in-memory list to mimic a real datasource like a database.

In a real application, loading should be executed with the query built using the information passed to the load method.

Documentation
IdYearBrandColor
1b0e30071999BMWSilver
bd8fa00e1991VolvoSilver
c91440452001VolvoOrange
c9e49db71992VolkswagenMaroon
f1abebea1991VolkswagenBlack
25203b512002FiatGreen
68ce8db71963MercedesMaroon
c9179a1d1990BMWSilver
029a5f541995JaguarBlue
b4cf567b1991FiatOrange
Car Detail
<h:form id="form">
    <p:dataTable var="car" value="#{dtLazyView.lazyModel}" paginator="true" rows="10"
                 paginatorTemplate="{RowsPerPageDropdown} {FirstPageLink} {PreviousPageLink} {CurrentPageReport} {NextPageLink} {LastPageLink}"
                 rowsPerPageTemplate="5,10,15" selectionMode="single" selection="#{dtLazyView.selectedCar}" id="carTable" lazy="true">
        <p:ajax event="rowSelect" listener="#{dtLazyView.onRowSelect}" update=":form:carDetail" oncomplete="PF('carDialog').show()" />
        <p:column headerText="Id" sortBy="#{car.id}" filterBy="#{car.id}">
            <h:outputText value="#{car.id}" />
        </p:column>
        <p:column headerText="Year" sortBy="#{car.year}" filterBy="#{car.year}">
            <h:outputText value="#{car.year}" />
        </p:column>
        <p:column headerText="Brand" sortBy="#{car.brand}" filterBy="#{car.brand}">
            <h:outputText value="#{car.brand}" />
        </p:column>
        <p:column headerText="Color" sortBy="#{car.color}" filterBy="#{car.color}">
            <h:outputText value="#{car.color}" />
        </p:column>
    </p:dataTable>

    <p:dialog header="Car Detail" widgetVar="carDialog" modal="true" showEffect="fade" hideEffect="fade" resizable="false">
        <p:outputPanel id="carDetail" style="text-align:center;">
            <p:panelGrid  columns="2" rendered="#{not empty dtLazyView.selectedCar}" columnClasses="label,value">
                <f:facet name="header">
                    <p:graphicImage name="demo/images/car/#{dtLazyView.selectedCar.brand}-big.gif"/>
                </f:facet>

                <h:outputText value="Id:" />
                <h:outputText value="#{dtLazyView.selectedCar.id}" />

                <h:outputText value="Year" />
                <h:outputText value="#{dtLazyView.selectedCar.year}" />

                <h:outputText value="Color:" />
                <h:outputText value="#{dtLazyView.selectedCar.color}" style="color:#{dtLazyView.selectedCar.color}"/>

                <h:outputText value="Price:" />
                <h:outputText value="#{dtLazyView.selectedCar.price}">
                    <f:convertNumber type="currency" currencySymbol="$" />
                </h:outputText>
            </p:panelGrid>
        </p:outputPanel>
    </p:dialog>
</h:form>

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