use build vars

Author: lriggs

.github/workflows/jarbuild.yml

@@ -109,16 +109,16 @@ jobs:
       - name: Extract source archive
         run: |
           tar -xf apache-arrow-java-*.tar.gz --strip-components=1
-      - name: Download the latest Apache Arrow C++
-        if: github.event_name != 'schedule'
-        run: |
-          ci/scripts/download_cpp.sh
+      # - name: Download the latest Apache Arrow C++
+      #   if: github.event_name != 'schedule'
+      #   run: |
+      #     ci/scripts/download_cpp.sh
       - name: Checkout Apache Arrow C++
-        if: github.event_name == 'schedule'
+        # if: github.event_name == 'schedule'
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
-          repository: ${arrow_repo}
-          ref: ${arrow_branch}
+          repository: ${{github.event.inputs.arrow_repo}}
+          ref: ${{github.event.inputs.arrow_branch}}
           path: arrow
       - name: Checkout apache/arrow-testing
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
@@ -177,16 +177,16 @@ jobs:
       - name: Extract source archive
         run: |
           tar -xf apache-arrow-java-*.tar.gz --strip-components=1
-      - name: Download the latest Apache Arrow C++
-        if: github.event_name != 'schedule'
-        run: |
-          ci/scripts/download_cpp.sh
+      # - name: Download the latest Apache Arrow C++
+      #   if: github.event_name != 'schedule'
+      #   run: |
+      #     ci/scripts/download_cpp.sh
       - name: Checkout Apache Arrow C++
-        if: github.event_name == 'schedule'
+        # if: github.event_name == 'schedule'
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
-          repository: ${arrow_repo}
-          ref: ${arrow_branch}
+          repository: ${{github.event.inputs.arrow_repo}}
+          ref: ${{github.event.inputs.arrow_branch}}
           path: arrow
       - name: Checkout apache/arrow-testing
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
@@ -312,8 +312,8 @@ jobs:
         # if: github.event_name == 'schedule'
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
-          repository: ${arrow_repo}
-          ref: ${arrow_branch}
+          repository: ${{github.event.inputs.arrow_repo}}
+          ref: ${{github.event.inputs.arrow_branch}}
           path: arrow
       - name: Set up Java
         uses: actions/setup-java@7a6d8a8234af8eb26422e24e3006232cccaa061b # v4.6.0