Fix json path issue in Mediators

Fix issue with Enrich mediator and foreach meadiator after Json Path Upgrade Fix wso2/product-micro-integrator#3116
wso2 · Feb 15, 2024 · cb0fde9 · cb0fde9
1 parent 564af81
commit cb0fde9
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Showing 2 changed files with 14 additions and 3 deletions.
diff --git a/modules/core/src/main/java/org/apache/synapse/mediators/builtin/ForEachMediator.java b/modules/core/src/main/java/org/apache/synapse/mediators/builtin/ForEachMediator.java
@@ -129,6 +129,11 @@ public boolean mediate(MessageContext synCtx) {
                         + " is not a valid JSON array", synCtx);
             }
             JsonArray iterableJsonArray = iterableChildElements.getAsJsonArray();
+            // If the iterableJsonArray is empty, then no need to continue the mediation
+            if (iterableJsonArray.isEmpty()){
+                log.info("No elements found for the JSONPath : " + expression);
+                return true;
+            }
             if (synLog.isTraceOrDebugEnabled()) {
                 synLog.traceOrDebug("Splitting with JSONPath : " + expression + " resulted in " +
                         iterableJsonArray.size() + " elements.");

diff --git a/modules/core/src/main/java/org/apache/synapse/mediators/elementary/Target.java b/modules/core/src/main/java/org/apache/synapse/mediators/elementary/Target.java
@@ -527,9 +527,15 @@ private String removeJSONFromString(MessageContext synCtx, String inputString, S
                 if (path.equals("$") || path.equals("$.")) {
                     result = "";
                 } else {
-                    DocumentContext doc = JsonPath.parse(result);
-                    doc.delete(path);
-                    result = doc.jsonString();
+                    Object list = JsonPath.compile(path).read(result);
+                    if (!((JsonArray) list).isEmpty()) {
+                        DocumentContext doc = JsonPath.parse(result);
+                        doc.delete(path);
+                        result = doc.jsonString();
+                    } else {
+                        log.warn("No matching elements were found for the given JSONPath: " + path + ". Therefore, " +
+                                "no elements were removed.");
+                    }
                 }
             }
         }