(brooklyn-server) branch master updated: remove unnecessary template model wrapping

[heneveld]

This is an automated email from the ASF dual-hosted git repository.

heneveld pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/brooklyn-server.git


The following commit(s) were added to refs/heads/master by this push:
     new 351e1d0639 remove unnecessary template model wrapping
351e1d0639 is described below

commit 351e1d06390cb5c7ac211ed55a6740f5ea180587
Author: Alex Heneveld <a...@cloudsoft.io>
AuthorDate: Thu Apr 11 10:52:19 2024 +0100

    remove unnecessary template model wrapping
    
    as it confuses some unwrapping, causing surprising lookups and errors
---
 .../brooklyn/util/core/text/TemplateProcessor.java | 22 ++++------------------
 1 file changed, 4 insertions(+), 18 deletions(-)

diff --git 
a/core/src/main/java/org/apache/brooklyn/util/core/text/TemplateProcessor.java 
b/core/src/main/java/org/apache/brooklyn/util/core/text/TemplateProcessor.java
index 3777c322f4..b620ca11ef 100644
--- 
a/core/src/main/java/org/apache/brooklyn/util/core/text/TemplateProcessor.java
+++ 
b/core/src/main/java/org/apache/brooklyn/util/core/text/TemplateProcessor.java
@@ -99,6 +99,7 @@ public class TemplateProcessor {
     static CrossTaskThreadLocalStack<Boolean> IS_FOR_WORKFLOW = new 
CrossTaskThreadLocalStack<>();
 
     public interface UnwrappableTemplateModel {
+        // could make sense to distinguish 'unwrappable as result' from 
'unwrappable for alternative lookup'
         Maybe<Object> unwrap();
     }
 
@@ -441,7 +442,7 @@ public class TemplateProcessor {
      * Freemarker will only do this when in inside bracket notation in an 
outer map, as in <code>${outer['a.b.']}</code>;
      * as a result this is intended only for use by {@link 
EntityAndMapTemplateModel} where
      * a caller has used bracked notation, as in 
<code>${mgmt['key.subkey']}</code>. */
-    protected static final class EntityConfigTemplateModel implements 
TemplateHashModel, UnwrappableTemplateModel {
+    protected static final class EntityConfigTemplateModel implements 
TemplateHashModel {
         protected final EntityInternal entity;
         protected final ManagementContext mgmt;
 
@@ -450,11 +451,6 @@ public class TemplateProcessor {
             this.mgmt = entity.getManagementContext();
         }
 
-        @Override
-        public Maybe<Object> unwrap() {
-            return Maybe.of(entity);
-        }
-
         @Override
         public boolean isEmpty() { return false; }
 
@@ -524,7 +520,7 @@ public class TemplateProcessor {
      * Freemarker will only do this when in inside bracket notation in an 
outer map, as in <code>${outer['a.b.']}</code>;
      * as a result this is intended only for use by {@link 
LocationAndMapTemplateModel} where
      * a caller has used bracked notation, as in 
<code>${mgmt['key.subkey']}</code>. */
-    protected static final class LocationConfigTemplateModel implements 
TemplateHashModel, UnwrappableTemplateModel {
+    protected static final class LocationConfigTemplateModel implements 
TemplateHashModel {
         protected final LocationInternal location;
         protected final ManagementContext mgmt;
 
@@ -533,11 +529,6 @@ public class TemplateProcessor {
             this.mgmt = location.getManagementContext();
         }
 
-        @Override
-        public Maybe<Object> unwrap() {
-            return Maybe.of(location);
-        }
-
         @Override
         public boolean isEmpty() { return false; }
 
@@ -597,15 +588,10 @@ public class TemplateProcessor {
         throw new TemplateModelException(msg+": 
"+Exceptions.collapseText(cause), cause);
     }
 
-    protected final static class EntityAttributeTemplateModel implements 
TemplateHashModel, UnwrappableTemplateModel {
+    protected final static class EntityAttributeTemplateModel implements 
TemplateHashModel {
         protected final EntityInternal entity;
         private final SensorResolutionMode mode;
 
-        @Override
-        public Maybe<Object> unwrap() {
-            return Maybe.of(entity);
-        }
-
         enum SensorResolutionMode { SENSOR_DEFINITION,
             ATTRIBUTE_VALUE,
             ATTRIBUTE_WHEN_READY_FOR_TEMPLATES,