Question

我想显示数据库中的数据但不能重复相同的配置文件，只需在现有配置文件中添加位置即可。上面的例子变得清晰：

+-------------------+---------------+---------------+
|   PROFILE         |   LOCATION    |   STATUS      |
+-------------------+---------------+---------------+
+-------------------+---------------+---------------+
|   Admin           |   Chief       |   OK          |
+-------------------+---------------+---------------+
|   Director        |   Supervision |   OK          |
+-------------------+---------------+---------------+
|   Secretary       |   Supervision |   OK          |
+-------------------+---------------+---------------+
|                   |   Admin       |   OK          |
|                   |   Chief       |   OK          |
|   Chief-accessor  |   Director    |   OK          |
|                   |   Secretary   |   OK          |
|                   |   Supervision |   OK          |
+-------------------+---------------+---------------+

使用这段代码作为我的数据表，我只能重复它们，但我不能将它们分组：

<rich:panel header="User location info" style="margin: 20px 0 !important;">
    <h:dataTable id="userLocationList"
        value="#{userLocation.list()}" var="row"
        styleClass="rich-table"
        headerClass="rich-table-subheader rich-table-subheadercell rich-table-thead"
        rowClasses="rich-table-row"
        columnClasses="rich-table-cell,rich-table-cell,rich-table-cell">
        <h:column>
            <f:facet name="header">
                <h:outputText value="Profile" />
            </f:facet>
            <center>
                <h:outputText value="#{row.profile}" />
            </center>
        </h:column>
        <h:column>
            <f:facet name="header">
                <h:outputText value="Location" />
            </f:facet>
            <h:outputText value="#{row.location}" />
        </h:column>
        <h:column>
            <f:facet name="header">
                <h:outputText value="Status" />
            </f:facet>
            <center>
                <h:outputText value="#{row.profile.status ? 'OK' : 'Inactive'}" />
            </center>
        </h:column>
    </h:dataTable>
</rich:panel>

像这样：

+-------------------+---------------+---------------+
|   PROFILE         |   LOCATION    |   STATUS      |
+-------------------+---------------+---------------+
+-------------------+---------------+---------------+
|   Admin           |   Chief       |   OK          |
+-------------------+---------------+---------------+
|   Director        |   Supervision |   OK          |
+-------------------+---------------+---------------+
|   Secretary       |   Supervision |   OK          |
+-------------------+---------------+---------------+
|   Chief-accessor  |   Admin       |   OK          |
+-------------------+---------------+---------------+
|   Chief-accessor  |   Chief       |   OK          |
+-------------------+---------------+---------------+
|   Chief-accessor  |   Director    |   OK          |
+-------------------+---------------+---------------+
|   Chief-accessor  |   Secretary   |   OK          |
+-------------------+---------------+---------------+
|   Chief-accessor  |   Supervision |   OK          |
+-------------------+---------------+---------------+

来自list()的{{1}}方法只是UserLocation中的select：

table_user_location

我试图在StackOverflow中按照一些答案来说明将数据表放在另一个数据表中，但我可以重复所有没有组配置文件的位置，例如：

select userLoc from UserLocation userLoc where userLoc.user.id = :userId

我怀疑是我正在做的通用查询，所以表中的重复内容。有没有人对此操作有所了解？

显示嵌套数据表而不重复原始数据

1 个答案: