<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><DIV>Hello Everyone</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>We are trying to implement a dynamic tree with zope.app.tree.</DIV><DIV>We want to fetch a list of objects from a database and display them [as a link for example].</DIV><DIV>When this object is selected, we want to fetch the children an display them.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>We haven't been able to find any example save the browser/cookie.py of the zope menu which seems to use a static tree implementation.</DIV><DIV>It also relies on the fact that the displayed objects are persistent in the ZODB. </DIV><DIV>If we had to prefetch all the potentially displayed objects for the 5 levels we wish to traverse, it could lead to truely many objects.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>We've tried to implement adaptors for the IChildObjects interface but we are not sure how to tie them into the system.</DIV><DIV>But maybe that's the wrong approach anyway.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Could someone point us to a usefull How-To or in the right direction?</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>thanks</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>wfg</DIV><DIV><SPAN class="Apple-tab-span" style="white-space:pre"> </SPAN>peter fuereder</DIV><DIV><DIV><DIV><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><DIV><BR class="khtml-block-placeholder"></DIV><DIV>--------------------------------------</DIV><DIV>Proclos</DIV><DIV>CTO</DIV><DIV>Peter Füreder</DIV><DIV><A href="mailto:peter.fuereder@proclos.com">peter.fuereder@proclos.com</A></DIV><DIV><A href="http://proclos.com">http://proclos.com</A></DIV><BR class="Apple-interchange-newline"></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN> </DIV><BR></DIV><DIV><BR class="khtml-block-placeholder"></DIV></DIV></BODY></HTML>