Dear Tapestry users,
I do not understand what @InjectPage actually does, can somebody please help me.
I've expected that @InjectPage should return a fresh page from the
pool, so that I can use it e.g. for creating page links with needed
parameters.
But if I try to inject a page in the same page class, it actually
injects "this" instead of a fresh page instance.
Example:
Say we have a Product page showing some product details.
It also shows links to related products (link to the same page but
with different parameter).
public class Product {
private String name;
void onActivate(String param) {
this.name = param;
}
Object[] onPassivate() {
return new Object[] { name };
}
@InjectPage
private Product productPage;
// in real life this method could be in a separate component
public Object[] getPageLinkContext() {
System.out.println("this=" + this);
System.out.println("productPage=" + productPage);
productPage.setName("another");
return productPage.onPassivate();
}
public void setName(String name) {
this.name = name;
}
public String getName() {
return name;
}
}
Product.tml:
<html t:type="layout" title="MyPage"
xmlns:t="http://tapestry.apache.org/schema/tapestry_5_1_0.xsd";
xmlns:p="tapestry:parameter">
This product = ${name}
<t:pagelink page="Product" context="pageLinkContext">related
product</t:pagelink>
This product = ${name}
</html>
What I expect is that value of "name" should not change after PageLink
component have called the getPageLinkContext() method.
But actual generated HTML is (for http://localhost:8080/myapp/product/initial):
This product = initial
<a href="/myapp/product/another">related product</a>
This product = another
System output shows that the "productPage" is the same instance as "this":
this=com.example.pages.prod...@90e1b2
productpage=com.example.pages.prod...@90e1b2
Is it the correct @InjectPage behaviour ?
Am I doing something lame ?
Thanks in advance,
Albert
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