From 1c3addb5f1da4709194137cafba7466fa77003d1 Mon Sep 17 00:00:00 2001
From: adityajai119 <tummalamohanaditya119@gmail.com>
Date: Sun, 8 Nov 2026 15:14:46 +0530
Subject: [PATCH] fix(dataset): print transform result with inherited header
 and dimensions. close #15557

Generated-by: Claude Opus 5.5 via OpenCode
---
 src/data/helper/transform.ts            | 36 +++++++++++++------------
 test/ut/spec/data/dataTransform.test.ts | 25 +++++++++++++++++
 2 files changed, 44 insertions(+), 17 deletions(-)

diff --git a/src/data/helper/transform.ts b/src/data/helper/transform.ts
index 62bcea0b2d..95209ae489 100644
--- a/src/data/helper/transform.ts
+++ b/src/data/helper/transform.ts
@@ -431,23 +431,7 @@ function applySingleDataTransform(
         })
     );
 
-    if (__DEV__) {
-        if (transOption.print) {
-            const printStrArr = map(resultList, extSource => {
-                const pipeIndexStr = pipeIndex != null ? ' === pipe index: ' + pipeIndex : '';
-                return [
-                    '=== dataset index: ' + infoForPrint.datasetIndex + pipeIndexStr + ' ===',
-                    '- transform result data:',
-                    makePrintable(extSource.data),
-                    '- transform result dimensions:',
-                    makePrintable(extSource.dimensions)
-                ].join('\n');
-            }).join('\n');
-            log(printStrArr);
-        }
-    }
-
-    return map(resultList, function (result, resultIndex) {
+    const resultSourceList = map(resultList, function (result, resultIndex) {
         let errMsg = '';
 
         if (!isObject(result)) {
@@ -536,6 +520,24 @@ function applySingleDataTransform(
             null
         );
     });
+
+    if (__DEV__) {
+        if (transOption.print) {
+            const printStrArr = map(resultSourceList, source => {
+                const pipeIndexStr = pipeIndex != null ? ' === pipe index: ' + pipeIndex : '';
+                return [
+                    '=== dataset index: ' + infoForPrint.datasetIndex + pipeIndexStr + ' ===',
+                    '- transform result data:',
+                    makePrintable(source.data),
+                    '- transform result dimensions:',
+                    makePrintable(map(source.dimensionsDefine, dimDef => dimDef.name))
+                ].join('\n');
+            }).join('\n');
+            log(printStrArr);
+        }
+    }
+
+    return resultSourceList;
 }
 
 function isSupportedSourceFormat(sourceFormat: SourceFormat): boolean {
diff --git a/test/ut/spec/data/dataTransform.test.ts b/test/ut/spec/data/dataTransform.test.ts
index 04cc20eae3..7cb9f5fed3 100644
--- a/test/ut/spec/data/dataTransform.test.ts
+++ b/test/ut/spec/data/dataTransform.test.ts
@@ -180,6 +180,31 @@ describe('dataTransform', function () {
         });
     });
 
+    it('print_inherited_header_and_dimensions', function () {
+        const logSpy = jest.spyOn(console, 'log').mockImplementation(() => {});
+        try {
+            const option: EChartsOption = {
+                dataset: [{
+                    source: makeDatasetSourceDetection()
+                }, {
+                    transform: { type: 'filter', config: { dimension: 'product', ne: 'BBB' }, print: true }
+                }],
+                xAxis: { type: 'category' },
+                yAxis: {},
+                series: { type: 'bar', datasetIndex: 1 }
+            };
+
+            chart.setOption(option);
+            const printed = logSpy.mock.calls.map(args => args.join(' ')).join('\n');
+            const header = JSON.stringify(['product', '2012', '2013', '2014', '2015']);
+            expect(printed).toContain('- transform result data:\n[' + header + ',');
+            expect(printed).toContain('- transform result dimensions:\n' + header);
+        }
+        finally {
+            logSpy.mockRestore();
+        }
+    });
+
 
 });