[dom4j-user] Ordered insert based on DTD

[Vishy Kasar]

Hi,   I am dealing with J2EE web app XML web.xml based on the the DTD which defines the top level element as   <!ELEMENT web-app (icon?, display-name?, description?, distributable?, context-param*, filter*, filter-mapping*, listener*, servlet*, servlet-mapping*, session-config?, mime-mapping*, welcome-file-list?, error-page*, taglib*, resource-env-ref*, resource-ref*, security-constraint*, login-config?, security-role*, env-entry*, ejb-ref*,  ejb-local-ref*)>   I have the web.xml in memory as a dom4j tree. When user asks me to insert a node, I can not simply append it but insert it at a point dictated by DTD. If I simply append it, the document is invalid as per DTD.   Is there any API that will let me insert an element at the right spot based on the order dictated by DTD?   Without such APIs, if some user asks me to insert servlet-mapping, then I will have to search for any existing servlet-mapping and insert after them. If there are no servlet-mapping, then search if there are any servlet then insert after them, If no servlets ..., you get the idea.   Even if there is no API in dom4j, this seem like such a common problem, I am sure somebody has already written generic code that I could use. Please pass me any info you may have on that.