Keep the jclass and the corresponding constructor jmethod inside a

scope block to prevent duplicate declaration error when multiple
variables of the same struct type are present.

Author: pidarped

src/controller/java/templates/partials/decode_value.zapt

@@ -31,28 +31,30 @@ if ({{source}}.IsNull()) {
       {{>decode_value target=(concat ../target "_" (asLowerCamelCase label)) source=(concat ../source "." (asLowerCamelCase label)) cluster=../cluster depth=(incrementDepth ../depth) omitDeclaration=false earlyReturn=../earlyReturn}}
     {{/zcl_struct_items_by_struct_and_cluster_name}}
 
-    jclass {{asLowerCamelCase type}}StructClass_{{depth}};
-    err = chip::JniReferences::GetInstance().GetLocalClassRef(env, "chip/devicecontroller/ChipStructs${{asUpperCamelCase cluster}}Cluster{{asUpperCamelCase type}}", {{asLowerCamelCase type}}StructClass_{{depth}});
-    if (err != CHIP_NO_ERROR) {
-      ChipLogError(Zcl, "Could not find class ChipStructs${{asUpperCamelCase cluster}}Cluster{{asUpperCamelCase type}}");
-      return {{earlyReturn}};
-    }
+    {
+      jclass {{asLowerCamelCase type}}StructClass_{{depth}};
+      err = chip::JniReferences::GetInstance().GetLocalClassRef(env, "chip/devicecontroller/ChipStructs${{asUpperCamelCase cluster}}Cluster{{asUpperCamelCase type}}", {{asLowerCamelCase type}}StructClass_{{depth}});
+      if (err != CHIP_NO_ERROR) {
+        ChipLogError(Zcl, "Could not find class ChipStructs${{asUpperCamelCase cluster}}Cluster{{asUpperCamelCase type}}");
+        return {{earlyReturn}};
+      }
 
-    jmethodID {{asLowerCamelCase type}}StructCtor_{{depth}};
-    err = chip::JniReferences::GetInstance().FindMethod(
-        env, {{asLowerCamelCase type}}StructClass_{{depth}}, "<init>",
-        "({{#zcl_struct_items_by_struct_and_cluster_name type cluster}}{{asJniSignature type null (asUpperCamelCase ../cluster) true}}{{/zcl_struct_items_by_struct_and_cluster_name}})V",
-        &{{asLowerCamelCase type}}StructCtor_{{depth}});
-    if (err != CHIP_NO_ERROR || {{asLowerCamelCase type}}StructCtor_{{depth}} == nullptr) {
-      ChipLogError(Zcl, "Could not find ChipStructs${{asUpperCamelCase cluster}}Cluster{{asUpperCamelCase type}} constructor");
-      return {{earlyReturn}};
-    }
+      jmethodID {{asLowerCamelCase type}}StructCtor_{{depth}};
+      err = chip::JniReferences::GetInstance().FindMethod(
+          env, {{asLowerCamelCase type}}StructClass_{{depth}}, "<init>",
+          "({{#zcl_struct_items_by_struct_and_cluster_name type cluster}}{{asJniSignature type null (asUpperCamelCase ../cluster) true}}{{/zcl_struct_items_by_struct_and_cluster_name}})V",
+          &{{asLowerCamelCase type}}StructCtor_{{depth}});
+      if (err != CHIP_NO_ERROR || {{asLowerCamelCase type}}StructCtor_{{depth}} == nullptr) {
+        ChipLogError(Zcl, "Could not find ChipStructs${{asUpperCamelCase cluster}}Cluster{{asUpperCamelCase type}} constructor");
+        return {{earlyReturn}};
+      }
 
-    {{target}} = env->NewObject({{asLowerCamelCase type}}StructClass_{{depth}}, {{asLowerCamelCase type}}StructCtor_{{depth}}
-      {{#zcl_struct_items_by_struct_and_cluster_name type cluster}}
-      , {{../target}}_{{asLowerCamelCase label}}
-      {{/zcl_struct_items_by_struct_and_cluster_name}}
-    );
+      {{target}} = env->NewObject({{asLowerCamelCase type}}StructClass_{{depth}}, {{asLowerCamelCase type}}StructCtor_{{depth}}
+        {{#zcl_struct_items_by_struct_and_cluster_name type cluster}}
+        , {{../target}}_{{asLowerCamelCase label}}
+        {{/zcl_struct_items_by_struct_and_cluster_name}}
+      );
+	}
   {{else}}
     {{#if_is_strongly_typed_chip_enum type}}
       std::string {{target}}ClassName = "{{asJniClassName type null (asUpperCamelCase cluster)}}";