Hello all. I am building a web portal application where each user has their
own cloud environment. I am representing user's cloud environment as a tree
structure. When user login, I prepare their tree based on what ever cloud
resources they have. *Once user select leaf in tree, new page opens up but
Tree automatically resets to unexpanded. If I go back to previous page, it
automatically expands. It almost seems that Tree is querying Page-Session
and not Application-session.* Here is how my code look like. Please notice
that I have used correct java annotation @SessionState on (private
ValueWrapper valueWrapper) in UserSessionManagement. I am using in
PortalAccessTree component in Layout component. Layout is what is used to
render all Pages on my site.
Can you please tell me what I am doing wrong? I can't store valueWrapper as
static member as it is different for each logged in user. My Tree component
goes to unexpanded state, as soon as i click page link, which has never
visited before.
public abstract class UserSessionManagement {
@SessionState
private User user;
private boolean userExists;
public User getUser() {
return user;
}
protected void setUser(User user) {
this.user = user;
}
public boolean isUserExists() {
return userExists;
}
@SessionState
private ValueWrapper valueWrapper;
private boolean valueWrapperExists;
public ValueWrapper getValueWrapper() {
return valueWrapper;
}
public void setValueWrapper(ValueWrapper valueWrapper) {
this.valueWrapper = valueWrapper;
}
public boolean isValueWrapperExists() {
return valueWrapperExists;
}
public boolean isLoggedIn() {
return getPrimaryUser() != null &&
getPrimaryUser().isLoggedIn();
}
public PrimaryUser getPrimaryUser() {
return userExists ? user.getPrimaryUser() : null;
}
}
public class PortalAccessTree extends UserSessionManagement {
@InjectComponent
private Tree tree;
/**
* Always initialize component using @SetupRender annotation.
* @throws VCloudException
*/
@SetupRender
void initializeValue() throws VCloudException
{
if(getUser().getRootNode().getChildren().size() == 0) {
TreePreprationHelperUtil.prepareAccessTree(getUser().getRootNode(),
getUser().getPrimaryUser().getCloudDirectorUsers());
}
}
public TreeModel<ValueWrapper> getValueWrapperModel() {
ValueEncoder<ValueWrapper> encoder = new
ValueEncoder<ValueWrapper>() {
public String toClient(ValueWrapper value) {
return value.getUuid();
}
public ValueWrapper toValue(String clientValue) {
return getUser().getRootNode().seek(clientValue);
}
};
return new DefaultTreeModel<ValueWrapper>(encoder, new
ValueWrapperTreeModelAdapter(), getUser().getRootNode().getChildren());
}
/**
* Clear Action link on PortalAccessTree.tml invokes this method.
*/
void onActionFromClear() {
tree.clearExpansions();
}
}
PortalAccessTree.tml
-----------------------
<t:container xmlns:t="http://tapestry.apache.org/schema/tapestry_5_3.xsd";
xmlns:p="tapestry:parameter">
*${primaryUser.portalUsername}'s cloud environments*
<t:tree t:id="tree" model="valueWrapperModel"
value="valueWrapper"
label="block:renderTreeNodeLabel"/>
<t:block id="renderTreeNodeLabel">
<t:if test="valueWrapper.leaf">
# ${valueWrapper.label}
<p:else>
${valueWrapper.label}
</p:else>
</t:if>
</t:block>
<t:actionlink t:id="clear">clear
expansions</t:actionlink>
<br/>
<div style="clear:both;"/>
</div>
</t:container>
Layout.tml
-------------
<html xmlns="http://www.w3.org/1999/xhtml";
xmlns:t="http://tapestry.apache.org/schema/tapestry_5_3.xsd";
xmlns:p="tapestry:parameter">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<link rel="shortcut icon" href="/ilandPortal/favicon.ico"
type="image/x-icon" />
<title t:type="if" test="title">${title}</title>
<title t:type="if" test="altTitle">${altTitle}</title>
</head>
<body>
<div class="page">
<t:delegate to="case"/>
</div>
<t:block t:id="loggedInMemberContainer">
<t:portalAccessTree/>
<t:body/>
</t:block>
<t:block t:id="visitorContainer">
<t:body/>
</t:block>
</body>
</html>
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