From 5a75a1c259ec8e1853d3d0c1b1dbdf997e8499e3 Mon Sep 17 00:00:00 2001
From: chinnamatli kusumalatha
 <chinnamatlikusumalatha@chinnamatlis-MacBook-Pro.local>
Date: Thu, 20 Feb 2025 17:06:40 +0530
Subject: [PATCH] handling empty decisiontable same as default decisiontable

---
 .../DecisionTableExpression.tsx               | 57 +++++++++----------
 1 file changed, 27 insertions(+), 30 deletions(-)

diff --git a/packages/boxed-expression-component/src/expressions/DecisionTableExpression/DecisionTableExpression.tsx b/packages/boxed-expression-component/src/expressions/DecisionTableExpression/DecisionTableExpression.tsx
index 836b89e9767..1eba10a2ed5 100644
--- a/packages/boxed-expression-component/src/expressions/DecisionTableExpression/DecisionTableExpression.tsx
+++ b/packages/boxed-expression-component/src/expressions/DecisionTableExpression/DecisionTableExpression.tsx
@@ -416,6 +416,26 @@ export function DecisionTableExpression({
     widths,
   ]);
 
+  const createDefaultRule = () => {
+    const defaultRowToAdd: Normalized<DMN15__tDecisionRule> = {
+      "@_id": generateUuid(),
+      inputEntry: [
+        {
+          "@_id": generateUuid(),
+          text: { __$$text: DECISION_TABLE_INPUT_DEFAULT_VALUE },
+        },
+      ],
+      outputEntry: [
+        {
+          "@_id": generateUuid(),
+          text: { __$$text: DECISION_TABLE_OUTPUT_DEFAULT_VALUE },
+        },
+      ],
+      annotationEntry: [{ text: { __$$text: "// Your annotations here" } }],
+    };
+    return defaultRowToAdd;
+  };
+
   const beeTableRows = useMemo(() => {
     const mapRuleToRow = (rule: Normalized<DMN15__tDecisionRule>) => {
       const ruleRow = [
@@ -437,43 +457,18 @@ export function DecisionTableExpression({
     };
     const prevRules = decisionTableExpression.rule ?? [];
     if (prevRules.length === 0) {
-      const defaultRowToAdd: Normalized<DMN15__tDecisionRule> = {
-        "@_id": generateUuid(),
-        inputEntry: decisionTableExpression.input?.map(() => ({
-          "@_id": generateUuid(),
-          text: { __$$text: DECISION_TABLE_INPUT_DEFAULT_VALUE },
-        })),
-        outputEntry: decisionTableExpression.output?.map(() => ({
-          "@_id": generateUuid(),
-          text: { __$$text: DECISION_TABLE_OUTPUT_DEFAULT_VALUE },
-        })),
-        annotationEntry: [{ text: { __$$text: "// Your annotations here" } }],
-      };
-      return [mapRuleToRow(defaultRowToAdd)];
+      return [mapRuleToRow(createDefaultRule())];
     }
     return prevRules.map(mapRuleToRow);
-  }, [decisionTableExpression.rule, decisionTableExpression.output, decisionTableExpression.input, beeTableColumns]);
+  }, [decisionTableExpression.rule, decisionTableExpression.output.length, beeTableColumns]);
 
   const onCellUpdates = useCallback(
     (cellUpdates: BeeTableCellUpdate<ROWTYPE>[]) => {
       setExpression({
         setExpressionAction: (prev: Normalized<BoxedDecisionTable>) => {
           let previousExpression: Normalized<BoxedDecisionTable> = { ...prev };
-          const isDisplayOnlyRowPresent = previousExpression.rule === undefined ? true : false;
-          if (isDisplayOnlyRowPresent) {
-            const defaultRowToAdd: Normalized<DMN15__tDecisionRule> = {
-              "@_id": generateUuid(),
-              inputEntry: Array.from(new Array(prev.input?.length ?? 0)).map(() => {
-                return createInputEntry();
-              }),
-              outputEntry: Array.from(new Array(prev.output?.length ?? 0)).map(() => {
-                return createOutputEntry();
-              }),
-              annotationEntry: Array.from(new Array(prev.annotation?.length ?? 0)).map(() => {
-                return { text: { __$$text: "// Your annotations here" } };
-              }),
-            };
-            previousExpression.rule = [defaultRowToAdd];
+          if (!previousExpression.rule) {
+            previousExpression.rule = [createDefaultRule()];
           }
           cellUpdates.forEach((cellUpdate) => {
             const newRules = [...(previousExpression.rule ?? [])];
@@ -749,9 +744,11 @@ export function DecisionTableExpression({
     (args: { beforeIndex: number; rowsCount: number }) => {
       setExpression({
         setExpressionAction: (prev: Normalized<BoxedDecisionTable>) => {
+          if (!prev.rule) {
+            prev.rule = [createDefaultRule()];
+          }
           const newRules = [...(prev.rule ?? [])];
           const newItems: Normalized<DMN15__tDecisionRule>[] = [];
-
           for (let i = 0; i < args.rowsCount; i++) {
             newItems.push({
               "@_id": generateUuid(),