[jsf primefaces在页面加载时加载过滤后的值

Question

我正在尝试创建默认的过滤值数据表。页面加载时如何为过滤器/数据表设置默认值？

试图在中添加filterValue =“ BMW”>

<p:column
    headerText="Car Type"
    sortBy="#{car}"
    filterBy="#{car}" 
filterValue="BMW" id="carTypeColumn">
    <h:outputText id="car"
                  value="#{carResultsRow.car.type}" />
</p:column> 
<p:dataTable id="carResults"
value="#{carMB.car}" var="carResultsRow"
rows="20" paginator="true" widgetVar="carResultsVar"
paginatorTemplate="{CurrentPageReport}  {FirstPageLink} {PreviousPageLink} 
{PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
style="margin-bottom:20px" rowIndexVar="rowIndex"
lazy="true" sortOrder="DESCENDING"
currentPageReportTemplate="(Displaying {startRecord} - {endRecord} of 
{totalRecords})"
rowStyleClass="#{(rowIndex mod 2) eq 0 ? 'highlight1' : 'highlight2'}"
emptyMessage="No results found for search."
reflow="true">

<p:column
    headerText="Car Type"
    sortBy="#{car}"
    filterBy="#{car}" id="carTypeColumn">
    <h:outputText id="car"
                  value="#{carResultsRow.car.type}" />
</p:column> 


<p:dataTable id="carResults2" ............
<p:dataTable id="carResults3" ...........
以下数据表产生结果-

实际结果

ID          Year    Type   Color  Status    Price

adff7ca0    1974    BMW     Blue    Sale    $14,160.00
50f83d04    1998    Renault Silver  Sale    $43,645.00
27b7be8d    1995    Merc    Red     Sold    $80,627.00
b35c4322    2006    BMW     Orange  Sold    $16,051.00
7888e692    1997    Fiat    Red     Sale    $4,508.00
adbf1199    2004    Audi    Brown   Sale    $37,511.00
8eb3e5a9    1985    Honda   Black   Sold    $46,729.00
fed0821c    1990    BMW     Red     Sale    $88,185.00
85d2282f    1967    Honda   Orange  Sold    $33,674.00
bc34ed49    1972    BMW     Blue    Sale    $81,567.00      
预期结果数据表1

adff7ca0    1974    BMW     Blue    Sale    $14,160.00  
b35c4322    2006    BMW     Orange  Sold    $16,051.00
fed0821c    1990    BMW     Red     Sale    $88,185.00          
bc34ed49    1972    BMW     Blue    Sale    $81,567.00  
数据表2

85d2282f    1967    Honda   Orange  Sold    $33,674.00
8eb3e5a9    1985    Honda   Black   Sold    $46,729.00
数据表3

50f83d04    1998    Renault Silver  Sale    $43,645.00
27b7be8d    1995    Merc    Red     Sold    $80,627.00
如何在页面加载时为过滤器/数据表设置默认值？

发布解决方案的结果

 filterBy="#{carMB.filterBy}"  filterBy = singletonList(new FilterState(

ID          Year    Type   Color  Status    Price
                   BMW -------------- Appeared in the filter header
dff7ca0    1974    BMW     Blue    Sale    $14,160
f83d04    1998    Renault Silver  Sale    $43,640
7be8d    1995    Merc    Red     Sold    $80,627
5c4322    2006    BMW     Orange  Sold    $16,051
88e692    1997    Fiat    Red     Sale    $4,508
bf1199    2004    Audi    Brown   Sale    $37,511
3e5a9    1985    Honda   Black   Sold    $46,729
0821c    1990    BMW     Red     Sale    $88,185
2282f    1967    Honda   Orange  Sold    $33,674
4ed49    1972    BMW     Blue    Sale    $81,567

我正在尝试创建默认的过滤值数据表。页面加载时如何为过滤器/数据表设置默认值？尝试在