1 Reply Latest reply on Apr 13, 2009 9:05 AM by oguzyalcin.oguzhanyalcin.gazi.edu.tr

descriptions instead values

mhdez Apr 10, 2009 5:49 PM

In my database table configIp I have a field named mask(subnet mask).

A mask value can be:

128.0.0.0 (equivalent to 1)

192.0.0.0 (equivalent to 2)

224.0.0.0 (equivalent to 3)

...and so on.

Then, in my xhtml form I have a selectOneMenu to pick the mask

<h:selectOneMenu id="mask" value="#{configIp.mask}">
        <f:selectItem itemValue="-" itemLabel=""/>
        <f:selectItem itemValue="128.0.0.0" itemLabel="1"/>
        <f:selectItem itemValue="192.0.0.0" itemLabel="2"/>
        <f:selectItem itemValue="224.0.0.0" itemLabel="3"/>
        <f:selectItem itemValue="240.0.0.0" itemLabel="4"/>
        <f:selectItem itemValue="248.0.0.0" itemLabel="5"/>
        <f:selectItem itemValue="252.0.0.0" itemLabel="6"/>
        <f:selectItem itemValue="254.0.0.0" itemLabel="7"/>
        <f:selectItem itemValue="255.0.0.0" itemLabel="8"/>
</h:selectOneMenu>

When I pick up, for example, 3 from de combobox the 224.0.0.0 value is writen in the field mask in the db table, and its fine.
I have another xhtml form to list the table values in a rich:dataTable component like this:

<rich:dataTable id="accessList" value="#{configIpList}" var="access" 
        rows="10" columnsWidth="200,20,300">
        <a4j:support event="onRowClick" reRender="edit,remove"
                action="#{accessView.dataTableObtenerSele(access)}"
                onsubmit="select(this,'#e6e6e6','#{a4jSkin.tableBackgroundColor}')"/>
        <rich:column>
                <f:facet name="header">Ip</f:facet>
                        <h:outputText value="#{access.ip}" styleClass="mytext"/>
        </rich:column>
        <rich:column>
                <f:facet name="header">Mask</f:facet>
                        <h:outputText value="#{access.mask}" styleClass="mytext"/>
        </rich:column>
</rich:dataTable>

Well just I need to show the equivalent value(3) instead mask value (224.0.0.0) in the Mask rich:column of the rich:dataTable. How can I do that?

1. Re: descriptions instead values

oguzyalcin.oguzhanyalcin.gazi.edu.tr Apr 13, 2009 9:05 AM (in response to mhdez)

Hi,
It will be a better practice to store those ip ranges in a lookup table in db. By giving a foreign key relation your problem can be solved easily. But in your case, you can simply use <c:choose>
and <c:when> for converting your ip values to int values like:

<rich:dataTable id="accessList" value="#{configIpList}" var="access" 
        rows="10" columnsWidth="200,20,300">
        <a4j:support event="onRowClick" reRender="edit,remove"
                action="#{accessView.dataTableObtenerSele(access)}"
                onsubmit="select(this,'#e6e6e6','#{a4jSkin.tableBackgroundColor}')"/>
        <rich:column>
                <f:facet name="header">Ip</f:facet>
                        <h:outputText value="#{access.ip}" styleClass="mytext"/>
        </rich:column>
        <rich:column>
                <f:facet name="header">Mask</f:facet>
        <c:choose>
            <c:when test="#{access.mask == '128.0.0.0'}">
                        <h:outputText value="1" styleClass="mytext"/>
            </c:when>
            <c:when test="#{access.mask == '192.0.0.0'}">
                        <h:outputText value="2" styleClass="mytext"/>
            </c:when>
            ...
        </c:choose>
        </rich:column>
</rich:dataTable>