feat: allow Multi-Link on Input Ports by aglinxinyuan · Pull Request #4342 · apache/texera

aglinxinyuan · 2026-03-31T23:42:50Z

What changes were proposed in this PR?

Enabling multi-link support for input ports.

Before the change	After the change

Any related issues, documentation, discussions?

Closes #4329

How was this PR tested?

Tested manually.

Was this PR authored or co-authored using generative AI tooling?

No.

Copilot

Pull request overview

This PR enables multi-link support on input ports in the workflow editor, aligning input-port connection behavior with existing output-port multi-link behavior (closes #4329).

Changes:

Allows multiple links to connect to the same input port in the workflow editor connection validator.
Updates workflow validation so input ports no longer require exactly one incoming link.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 4 comments.

File	Description
frontend/src/app/workspace/service/validation/validation-workflow.service.ts	Adjusts operator connection validation logic for input ports to permit multi-link.
frontend/src/app/workspace/component/workflow-editor/workflow-editor.component.ts	Relaxes UI connection validation to allow additional links into already-connected input ports.

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frontend/src/app/workspace/service/validation/validation-workflow.service.ts

frontend/src/app/workspace/component/workflow-editor/workflow-editor.component.ts

…low.service.ts Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> Signed-off-by: Xinyuan Lin <xinyual3@uci.edu>

chenlica · 2026-04-01T07:09:16Z

@Xiao-zhen-Liu Please review it.

Xiao-zhen-Liu

Left a comment.

frontend/src/app/workspace/service/validation/validation-workflow.service.ts

aglinxinyuan · 2026-04-03T05:35:01Z

Per offline discussion, we will change the flag from "allowMultiInputs" to "disallowMultiInputs", and disallow multi-inputs on visualization operators.

Xiao-zhen-Liu

I thought we agreed on letting disallowMultiInput be false by default but true for visualization operators. Your changes do not seem to reflect that.

frontend/src/app/workspace/service/operator-metadata/mock-operator-metadata.data.ts

...tor/src/main/scala/org/apache/texera/amber/operator/metadata/OperatorMetadataGenerator.scala

This reverts commit b498313.

This reverts commit 8918de0.

Xiao-zhen-Liu

LGTM

Yicong-Huang

I left some comments. @aglinxinyuan please add some more description on the PR itself, so we know the changes in high level.

I find many unexpected changes, in my opinion they should not be in this PR, according to the current description. @chenlica please chime in on review process.

Yicong-Huang · 2026-04-11T00:40:46Z

common/config/src/main/resources/storage.conf

                uri-without-scheme = "localhost:5432/texera_iceberg_catalog"
                uri-without-scheme = ${?STORAGE_ICEBERG_CATALOG_POSTGRES_URI_WITHOUT_SCHEME}

-                username = "texera"


@aglinxinyuan @Xiao-zhen-Liu are these changes intentional? it is not mentioned in PR description.

This change is unintentional, but it has no effect since it's just a placeholder.

we should avoid this kind of unintentional change. whether it has effect or not is debatable. for example, for other developers they may have conflict when they pull the change that they need to deal with. so that's also "effect".

I totally agree. It's definitely a mistake. Besides this one, all the other changes are intentional.

Yicong-Huang · 2026-04-11T00:41:39Z

...on/workflow-operator/src/main/scala/org/apache/texera/amber/operator/dummy/DummyOpDesc.scala

          )
      }
    } else {
-      List(InputPort(PortIdentity(), allowMultiLinks = true))


I think we need to keep the PortIdentity() part. PortIdentity() returns PortIdentity(0).

It will return the same result.

I don't think so. do you have a test result to show they are equal?

PortIdentity(0) is not equal to 0 or null.

Yes. I will provide test result later. If it's not the same, the test case should fail.

Yicong-Huang · 2026-04-11T00:42:35Z

...ain/scala/org/apache/texera/amber/operator/visualization/bubbleChart/BubbleChartOpDesc.scala

      "a 3D Scatter Plot; Bubbles are graphed using x and y labels, and their sizes determined by a z-value.",
-      OperatorGroupConstants.VISUALIZATION_BASIC_GROUP,
-      inputPorts = List(InputPort()),
-      outputPorts = List(OutputPort(mode = OutputMode.SINGLE_SNAPSHOT))


why do we have those changes on the output port? I thought the PR is only about input port?

It's just a refactor. The input port and the output port is still the same. The duplicate port definition is moved to the parent class.

Let's separate refactor and feature change. even if you combine them, it will be good to annotate on the PR description. other wise this is unexpected change.

Yicong-Huang · 2026-04-11T00:42:52Z

...ain/scala/org/apache/texera/amber/operator/visualization/bulletChart/BulletChartOpDesc.scala

  @JsonSchemaTitle("Steps")
  @JsonPropertyDescription("Optional: Each step includes a start and end value e.g., 0, 100.")
-  var steps: JList[BulletChartStepDefinition] = new ArrayList[BulletChartStepDefinition]()
+  var steps: JList[BulletChartStepDefinition] = new util.ArrayList[BulletChartStepDefinition]()


why this change?

Done by formatter.

this is unnecessary change. if it is caused by formatter then we should fix the formatter. does our formatter give inconsistent results across different runs?

I also checked, it's a better practice.

aglinxinyuan · 2026-04-11T01:24:50Z

I left some comments. @aglinxinyuan please add some more description on the PR itself, so we know the changes in high level.

I find many unexpected changes, in my opinion they should not be in this PR, according to the current description. @chenlica please chime in on review process.

All the changes are intentional expect one line. That line is also a placeholder so it has no effect on the codebase. All the changes in the PR are being discussed and reviewed. Every reviewer has different standards, so it's very subjective.

Yicong-Huang · 2026-04-11T01:35:41Z

I left some comments. @aglinxinyuan please add some more description on the PR itself, so we know the changes in high level.
I find many unexpected changes, in my opinion they should not be in this PR, according to the current description. @chenlica please chime in on review process.

All the changes are intentional expect one line. That line is also a placeholder so it has no effect on the codebase. All the changes in the PR are being discussed and reviewed. Every reviewer has different standards, so it's very subjective.

Please minimize the change. even if a change has no "big effect" it should be avoided, if it is unrelated to the PR's scope. Not to mention there is indeed unintentional change included in the PR that should not have been merged.

init

0457987

aglinxinyuan requested a review from Xiao-zhen-Liu March 31, 2026 23:42

aglinxinyuan self-assigned this Mar 31, 2026

Copilot AI review requested due to automatic review settings March 31, 2026 23:42

github-actions bot added the frontend Changes related to the frontend GUI label Mar 31, 2026

Copilot started reviewing on behalf of aglinxinyuan March 31, 2026 23:43 View session

Merge branch 'main' into xinyuan-union

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Update frontend/src/app/workspace/service/validation/validation-workf…

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…low.service.ts Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> Signed-off-by: Xinyuan Lin <xinyual3@uci.edu>

fix test

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frontend/src/app/workspace/service/validation/validation-workflow.service.ts Outdated Show resolved Hide resolved

Merge branch 'main' into xinyuan-union

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aglinxinyuan marked this pull request as draft April 3, 2026 05:33

aglinxinyuan marked this pull request as ready for review April 3, 2026 05:35

aglinxinyuan marked this pull request as draft April 3, 2026 05:35

aglinxinyuan added 2 commits April 2, 2026 22:35

Merge branch 'main' into xinyuan-union

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aglinxinyuan added 4 commits April 5, 2026 17:17

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aglinxinyuan marked this pull request as ready for review April 6, 2026 02:10

update

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frontend/src/app/workspace/service/operator-metadata/mock-operator-metadata.data.ts Outdated Show resolved Hide resolved

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...tor/src/main/scala/org/apache/texera/amber/operator/metadata/OperatorMetadataGenerator.scala Outdated Show resolved Hide resolved

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...tor/src/main/scala/org/apache/texera/amber/operator/metadata/OperatorMetadataGenerator.scala Outdated Show resolved Hide resolved

aglinxinyuan added 4 commits April 6, 2026 13:05

update

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Revert "update"

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This reverts commit b498313.

Revert "update"

549ad07

This reverts commit 8918de0.

update

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aglinxinyuan added 5 commits April 8, 2026 18:06

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Merge branch 'main' into xinyuan-union

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aglinxinyuan enabled auto-merge (squash) April 9, 2026 07:02

aglinxinyuan added 7 commits April 9, 2026 15:44

Merge branch 'main' into xinyuan-union

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Merge branch 'main' into xinyuan-union

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fix fmt

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Merge remote-tracking branch 'origin/xinyuan-union' into xinyuan-union

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aglinxinyuan merged commit dffd031 into main Apr 11, 2026
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aglinxinyuan deleted the xinyuan-union branch April 11, 2026 00:03

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aglinxinyuan commented Apr 11, 2026

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aglinxinyuan commented Mar 31, 2026 •

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