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DefaultDialogParameterHandler (Quasar Client Building Blicks API)
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com.sdm.quasar.client.jsf.dialog</FONT>
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Class DefaultDialogParameterHandler</H2>
<PRE>
java.lang.Object
  <IMG SRC="../../../../../../resources/inherit.gif" ALT="extended by"><B>com.sdm.quasar.client.jsf.dialog.DefaultDialogParameterHandler</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandler.html" title="interface in com.sdm.quasar.client.jsf.dialog">DialogParameterHandler</A></DD>
</DL>
<DL>
<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../../../../com/sdm/quasar/client/showcase/jsf/application/ShowcaseDialogParameterHandler.html" title="class in com.sdm.quasar.client.showcase.jsf.application">ShowcaseDialogParameterHandler</A></DD>
</DL>
<HR>
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<DT>public class <B>DefaultDialogParameterHandler</B><DT>extends java.lang.Object<DT>implements <A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandler.html" title="interface in com.sdm.quasar.client.jsf.dialog">DialogParameterHandler</A></DL>

<P>
Default implementation of the <A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandler.html" title="interface in com.sdm.quasar.client.jsf.dialog"><CODE>DialogParameterHandler</CODE></A> interface
<P>

<P>
<DL>
<DT><B>Author:</B></DT>
  <DD>Martin Haft <martin.haft@sdm.de>, sd&m AG, Carsten Lucke <clucke@sdm.de>, sd&m AG</DD>
</DL>
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<TD><B>Fields inherited from interface com.sdm.quasar.client.jsf.dialog.<A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandler.html" title="interface in com.sdm.quasar.client.jsf.dialog">DialogParameterHandler</A></B></TD>
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<TD><CODE><A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandler.html#DIALOG_PARAMETER_HANDLER_CONFIG_KEY">DIALOG_PARAMETER_HANDLER_CONFIG_KEY</A></CODE></TD>
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<TD><CODE><B><A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DefaultDialogParameterHandler.html#DefaultDialogParameterHandler()">DefaultDialogParameterHandler</A></B>()</CODE>

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<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DefaultDialogParameterHandler.html#checkIsAjaxRequest(HttpServletRequest, ServletResponse)">checkIsAjaxRequest</A></B>(HttpServletRequest&nbsp;request,
                   ServletResponse&nbsp;response)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The indication of an AJAX request depends on the concrete ajax framework.
 </TD>
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<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DefaultDialogParameterHandler.html#handleInvalidSequenceNumber(HttpServletRequest, ServletResponse, com.sdm.quasar.client.core.dialog.DialogControl, com.sdm.quasar.client.core.dialog.DialogInstanceId, java.lang.String, com.sdm.quasar.client.jsf.dialog.DialogParameterHandlerCallback)">handleInvalidSequenceNumber</A></B>(HttpServletRequest&nbsp;request,
                            ServletResponse&nbsp;response,
                            <A HREF="../../../../../../com/sdm/quasar/client/core/dialog/DialogControl.html" title="interface in com.sdm.quasar.client.core.dialog">DialogControl</A>&nbsp;sessionDialogControl,
                            <A HREF="../../../../../../com/sdm/quasar/client/core/dialog/DialogInstanceId.html" title="class in com.sdm.quasar.client.core.dialog">DialogInstanceId</A>&nbsp;dialogInstanceId,
                            java.lang.String&nbsp;webPageUrl,
                            <A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandlerCallback.html" title="interface in com.sdm.quasar.client.jsf.dialog">DialogParameterHandlerCallback</A>&nbsp;callback)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The sequence number is invalid: the request was from a dialog in an old state 
 or a double submit of the same request.
 </TD>
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<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DefaultDialogParameterHandler.html#handleMissingDialogParameters(HttpServletRequest, ServletResponse, com.sdm.quasar.client.core.dialog.DialogControl, com.sdm.quasar.client.jsf.dialog.DialogParameterHandlerCallback)">handleMissingDialogParameters</A></B>(HttpServletRequest&nbsp;request,
                              ServletResponse&nbsp;response,
                              <A HREF="../../../../../../com/sdm/quasar/client/core/dialog/DialogControl.html" title="interface in com.sdm.quasar.client.core.dialog">DialogControl</A>&nbsp;sessionDialogControl,
                              <A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandlerCallback.html" title="interface in com.sdm.quasar.client.jsf.dialog">DialogParameterHandlerCallback</A>&nbsp;callback)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This method is called when the dialog parameters,
 i.e. the dialog id or the dialog instance id, are incomplete.
 This may be a request to enter the application, 
 a request from a bookmark or a request from a dialog
 that is closed and should not be recreated automatically.</TD>
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<A NAME="DefaultDialogParameterHandler()"><!-- --></A><H3>
DefaultDialogParameterHandler</H3>
<PRE>
public <B>DefaultDialogParameterHandler</B>()</PRE>
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<A NAME="handleMissingDialogParameters(HttpServletRequest, ServletResponse, com.sdm.quasar.client.core.dialog.DialogControl, com.sdm.quasar.client.jsf.dialog.DialogParameterHandlerCallback)"><!-- --></A><H3>
handleMissingDialogParameters</H3>
<PRE>
public boolean <B>handleMissingDialogParameters</B>(HttpServletRequest&nbsp;request,
                                             ServletResponse&nbsp;response,
                                             <A HREF="../../../../../../com/sdm/quasar/client/core/dialog/DialogControl.html" title="interface in com.sdm.quasar.client.core.dialog">DialogControl</A>&nbsp;sessionDialogControl,
                                             <A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandlerCallback.html" title="interface in com.sdm.quasar.client.jsf.dialog">DialogParameterHandlerCallback</A>&nbsp;callback)</PRE>
<DL>
<DD>This method is called when the dialog parameters,
 i.e. the dialog id or the dialog instance id, are incomplete.
 This may be a request to enter the application, 
 a request from a bookmark or a request from a dialog
 that is closed and should not be recreated automatically.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandler.html#handleMissingDialogParameters(HttpServletRequest, ServletResponse, com.sdm.quasar.client.core.dialog.DialogControl, com.sdm.quasar.client.jsf.dialog.DialogParameterHandlerCallback)">handleMissingDialogParameters</A></CODE> in interface <CODE><A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandler.html" title="interface in com.sdm.quasar.client.jsf.dialog">DialogParameterHandler</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true if the response is completed e.g. due to a 
 redirect to a determined dialog. The servlet filter chain will 
 not be processed further, but the redirect will be performed immediately.<DT><B>See Also:</B><DD><CODE>When no dialog context could be reconstructed we bypass as default. 
 Overwrite this method for three cases 
 <ul>
 <li>direct entry: define the URLs your application will be entered 
 and create corresponding dialog</li>
 <li>bookmarkable dialogs: reconize bookmarked urls, 
 if this is an url of an bookmarkable dialog, 
 create this dialog and pass parameters. 
 Caution: If bookmarked dialog is a subdialog you have to reconstruct 
 all super dialogs as well! Or redirect to an entry page.</li>
 <li>back navigation to a closed dialog: if the url is from the browser history 
 and the corresponding dialog is closed you may create a new instance of this dialog
 or show an error dialog instead.</li>
 </ul></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="handleInvalidSequenceNumber(HttpServletRequest, ServletResponse, com.sdm.quasar.client.core.dialog.DialogControl, com.sdm.quasar.client.core.dialog.DialogInstanceId, java.lang.String, com.sdm.quasar.client.jsf.dialog.DialogParameterHandlerCallback)"><!-- --></A><H3>
handleInvalidSequenceNumber</H3>
<PRE>
public boolean <B>handleInvalidSequenceNumber</B>(HttpServletRequest&nbsp;request,
                                           ServletResponse&nbsp;response,
                                           <A HREF="../../../../../../com/sdm/quasar/client/core/dialog/DialogControl.html" title="interface in com.sdm.quasar.client.core.dialog">DialogControl</A>&nbsp;sessionDialogControl,
                                           <A HREF="../../../../../../com/sdm/quasar/client/core/dialog/DialogInstanceId.html" title="class in com.sdm.quasar.client.core.dialog">DialogInstanceId</A>&nbsp;dialogInstanceId,
                                           java.lang.String&nbsp;webPageUrl,
                                           <A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandlerCallback.html" title="interface in com.sdm.quasar.client.jsf.dialog">DialogParameterHandlerCallback</A>&nbsp;callback)</PRE>
<DL>
<DD>The sequence number is invalid: the request was from a dialog in an old state 
 or a double submit of the same request.
 Thus we throw an Exception to avoid double submit or request based on old data.
 You can override this to display your own dialog.
 For example see the implementation of this method in the showcase.
 If you do not use sequence numbers, just return.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandler.html#handleInvalidSequenceNumber(HttpServletRequest, ServletResponse, com.sdm.quasar.client.core.dialog.DialogControl, com.sdm.quasar.client.core.dialog.DialogInstanceId, java.lang.String, com.sdm.quasar.client.jsf.dialog.DialogParameterHandlerCallback)">handleInvalidSequenceNumber</A></CODE> in interface <CODE><A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandler.html" title="interface in com.sdm.quasar.client.jsf.dialog">DialogParameterHandler</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>dialogInstanceId</CODE> - <A HREF="../../../../../../com/sdm/quasar/client/core/dialog/DialogInstanceId.html" title="class in com.sdm.quasar.client.core.dialog"><CODE>DialogInstanceId</CODE></A> of the dialog that is out of sequence<DD><CODE>webPageUrl</CODE> - an URL for the corresponding dialog in its actual state
<DT><B>Returns:</B><DD>true if the response is completed e.g. due to a 
 redirect to a determined dialog. The servlet filter chain will 
 not be processed further, but the redirect will be performed immediately.<DT><B>See Also:</B><DD><CODE>com.sdm.quasar.client.jsf.dialog.DialogParameterHandler#handleInvalidSequenceNumber(ServiceProvider, DialogRequestParameters)</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="checkIsAjaxRequest(HttpServletRequest, ServletResponse)"><!-- --></A><H3>
checkIsAjaxRequest</H3>
<PRE>
public boolean <B>checkIsAjaxRequest</B>(HttpServletRequest&nbsp;request,
                                  ServletResponse&nbsp;response)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandler.html" title="interface in com.sdm.quasar.client.jsf.dialog">DialogParameterHandler</A></CODE></B></DD>
<DD>The indication of an AJAX request depends on the concrete ajax framework.
 Please take a look at the request parameters
 to tell us if we are dealing with an AJAX request.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandler.html#checkIsAjaxRequest(HttpServletRequest, ServletResponse)">checkIsAjaxRequest</A></CODE> in interface <CODE><A HREF="../../../../../../com/sdm/quasar/client/jsf/dialog/DialogParameterHandler.html" title="interface in com.sdm.quasar.client.jsf.dialog">DialogParameterHandler</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true, if the given request is an AJAX request.</DL>
</DD>
</DL>
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