I often have lists of things that need to be formatted, but the list items are actually pieces of data that are not already in an object. I need ST to do something like:
Ter=3432
Tom=32234
....
using template:
$items:{it.name$=$it.type$}$
This example will call getName() on the objects in items attribute, but
what if they aren't objects? I have perhaps two parallel arrays
instead of a single array of objects containing two fields. One
solution is allow Maps to be handled like properties so that it.name
would fail getName() but then see that it's a Map and do
it.get("name") instead.
This very clean approach is espoused by some, but the problem is that it's a hole in my separation rules. People can put the logic in the view because you could say: "go get bob's data" in the view:
Bob's Phone: $db.bob.phone$
A view should not be part of the program and hence should never be able to go ask for a specific person's data.
After much thought, I finally decided on a simple solution. I've
added setAttribute variants that pass in multiple property values,
with the property names specified as part of the name using a special
attribute name syntax: "name.{propName1,propName2,...}". This
object is a special kind of HashMap that hopefully prevents people
from passing a subclass or other variant that they have created as
it would be a loophole. Anyway, the AggregateModelAdaptor#getProperty
method looks for Aggregate as a special case and does a get instead
of getPropertyName.
| Access | Constructor and Description |
|---|---|
| public |
| properties | back to summary |
|---|---|
| public HashMap<String, Object> properties | |
| Aggregate | back to summary |
|---|---|
| public Aggregate() | |
| get | back to summary |
|---|---|
| public Object get(String propName) | |
| put | back to summary |
|---|---|
| protected void put(String propName, Object propValue) Allow StringTemplate to add values, but prevent the end user from doing so. | |
| toString | back to summary |
|---|---|
| public String toString() Overrides java. Doc from java. Returns a string representation of the object. | |