<p:datatable> partial process does not reflect changes immediately - jsf-2

Question

I have a code like:
<p:dataTable style="padding-top: 5px" var="leaveDetails" value="#{userLeaveBean.leaveDetails}" id="leaveDataTable" editable="true">
<p:column headerText="Leave Starts on" width="230">
<p:calendar valueChangeListener="#{userLeaveBean.handleFromDateChanege}" value="#{leaveDetails.dtLeaveFromDate}" pattern="dd-MMM-yyyy" size="16" showOn="button" id="editFrom">
<p:ajax event="dateSelect"/>
</p:calendar>
<h:selectOneRadio value="#{leaveDetails.strStartTiming}" valueChangeListener="#{userLeaveBean.handleRadioFirstValueChange}">
<f:selectItem itemValue="morning" itemLabel="Morning"/>
<f:selectItem itemValue="afternoon" itemLabel="Afternoon" />
<p:ajax event="click"/>
</h:selectOneRadio>
</p:column>
<p:column headerText="Leave Ends on" width="230">
<p:calendar valueChangeListener="#{userLeaveBean.handleToDateChanege}" value="#{leaveDetails.dtLeaveToDate}" pattern="dd-MMM-yyyy" size="16" showOn="button" id="editTo">
<p:ajax event="dateSelect"/>
</p:calendar>
<h:selectOneRadio value="#{leaveDetails.strEndTiming}" valueChangeListener="#{userLeaveBean.handleRadioSecondValueChange}">
<f:selectItem itemValue="noon" itemLabel="Noon"/>
<f:selectItem itemValue="endofday" itemLabel="End Of Day"/>
<p:ajax event="click"/>
</h:selectOneRadio>
</p:column>
<p:column headerText="Days" width="40" id="total">
<h:outputText value="#{leaveDetails.totalLeaveDays}"/>
</p:column>
<p:column headerText="Creation" width="100">
<h:outputText value="#{leaveDetails.dtApplicationDate}">
<f:convertDateTime pattern="EEEE,dd-MMM-yyyy"/>
</h:outputText>
</p:column>
<p:column headerText="Status" width="100">
<h:outputText value="#{leaveDetails.strLeaveStatus}"/>
</p:column>
<p:column headerText="Edit" width="40" rendered="#{leaveDetails.strLeaveStatus == 'Canceled' or leaveDetails.strLeaveStatus == 'Availed'}">
<p:commandLink actionListener="#{userLeaveBean.editAppliedLeave}" title="Edit" disabled="true" update="leaveDataTable" immediate="true" partialSubmit="true">
<h:graphicImage url="resources/images/edit.JPG"/>
<f:attribute name="userId" value="#{employee.name}"/>
<f:attribute name="editFirstHalf" value="#{leaveDetails.strStartTiming}"/>
<f:attribute name="editSecondHalf" value="#{leaveDetails.strEndTiming}"/>
<f:attribute name="editFrom" value="#{leaveDetails.dtLeaveFromDate}"/>
<f:attribute name="editTo" value="#{leaveDetails.dtLeaveToDate}"/>
<f:attribute name="leaveId" value="#{leaveDetails.strLeaveId}"/>
</p:commandLink>
</p:column>
<p:column headerText="Edit" width="40" rendered="#{leaveDetails.strLeaveStatus != 'Canceled'}">
<p:commandLink actionListener="#{userLeaveBean.editAppliedLeave}" title="Edit" disabled="false" update="leaveDataTable" immediate="true" process="#this" >
<h:graphicImage url="resources/images/edit.JPG"/>
<f:attribute name="userId" value="#{employee.name}"/>
<f:attribute name="editFirstHalf" value="#{leaveDetails.strStartTiming}"/>
<f:attribute name="editSecondHalf" value="#{leaveDetails.strEndTiming}"/>
<f:attribute name="editFrom" value="#{leaveDetails.dtLeaveFromDate}"/>
<f:attribute name="editTo" value="#{leaveDetails.dtLeaveToDate}"/>
<f:attribute name="leaveId" value="#{leaveDetails.strLeaveId}"/>
</p:commandLink>
</p:column>
<p:column headerText="Cancel" width="60" rendered="#{leaveDetails.strLeaveStatus == 'Canceled' or leaveDetails.strLeaveStatus == 'Availed'}">
<p:commandLink actionListener="#{userLeaveBean.cancelForLeave}" title="Cancel Request" disabled="true" process="#this" update="leaveDataTable" immediate="false">
<h:graphicImage url="resources/images/cancel.gif"/>
<f:attribute name="userId" value="#{employee.name}"/>
<f:attribute name="leaveId" value="#{leaveDetails.strLeaveId}"/>
</p:commandLink>
</p:column>
<p:column headerText="Cancel" width="60" rendered="#{leaveDetails.strLeaveStatus != 'Canceled'}">
<p:commandLink actionListener="#{userLeaveBean.cancelForLeave}" title="Cancel Request" disabled="false" process="#this" update="leaveDataTable" immediate="false" ajax="true">
<h:graphicImage url="resources/images/cancel.gif"/>
<f:attribute name="userId" value="#{employee.name}"/>
<f:attribute name="leaveId" value="#{leaveDetails.strLeaveId}"/>
</p:commandLink>
</p:column>
</p:dataTable>
This part of code is written in a <p:datatable>.That means Row operation of a <p:datatable>.On clicking the <p:commandLink> some execution is happened, and I want it to reflect on the <p:datatable> immediatley. But it does not happen.
If I refresh the page, then the changes reflects for the row of the <p:datatable>. How can I modify my code to reflect the changes immediately.
Working on JSF2.0, primefaces 3.4.2, Jboss As7.1.1final and JDK6.0.
Bean is in #ViewScoped.
Please suggest.
Thanks in advance.