f:table与唯一约束不兼容？

使用 <f:converter> 元素将唯一约束应用于 f:table 组件。

示例代码：

<f:converter converterId="javax.faces.Integer"> <f:attribute name="javax.faces.convert.Integer.MIN_VALUE" value="0"/> <f:attribute name="javax.faces.convert.Integer.MAX_VALUE" value="100"/> </f:converter>

<f:metadata> <f:viewParam name="id" value="#{bean.id}" required="true"/> <f:event type="preRenderView" listener="#{bean.init}"/> </f:metadata>

<f:table value="#{bean.list}" var="item" id="itemsTable" editable="true" editOn="click" sortMode="multiple" paginator="true" rows="#{bean.rowsPerPage}">

<f:facet name="header">
    <h:outputText value="Items"/>
</f:facet>

<f:column
    headerText="Id"
    sortBy="#{item.id}"
    filterBy="#{item.id}"
    filterValue="#{bean.filter.id}">
    <h:outputText value="#{item.id}"/>
</f:column>

<f:column
    headerText="Name"
    sortBy="#{item.name}"
    filterBy="#{item.name}"
    filterValue="#{bean.filter.name}">
    <f:facet name="input">
        <h:inputText value="#{item.name}" size="20"/>
    </f:facet>
    <h:outputText value="#{item.name}"/>
</f:column>

<f:column
    headerText="Description"
    sortBy="#{item.description}"
    filterBy="#{item.description}"
    filterValue="#{bean.filter.description}">
    <f:facet name="input">
        <h:inputTextarea id="itemDescriptionInput" value="#{item.description}" rows="5" cols="30"/>
    </f:facet>
    <h:outputText value="#{item.description}"/>
</f:column>

<f:column
    headerText="Price"
    sortBy="#{item.price}"
    filterBy="#{item.price}"
    filterValue="#{bean