LantaoJin commented on code in PR #77:
URL: https://github.com/apache/datafusion-java/pull/77#discussion_r3280322316
##########
core/pom.xml:
##########
@@ -77,9 +83,34 @@ under the License.
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
-
<argLine>-Djava.library.path=${maven.multiModuleProjectDirectory}/native/target/debug
--add-opens=java.base/java.nio=ALL-UNNAMED</argLine>
+
<argLine>--add-opens=java.base/java.nio=ALL-UNNAMED</argLine>
</configuration>
</plugin>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-antrun-plugin</artifactId>
+ <executions>
+ <execution>
+ <id>copy-native-lib</id>
+ <phase>process-classes</phase>
+ <goals><goal>run</goal></goals>
+ <configuration>
+ <target>
+ <property name="datafusion.native.lib.source"
+
value="${maven.multiModuleProjectDirectory}/native/target/${datafusion.native.profile}/${datafusion.lib.filename}"/>
+ <fail message="Native library not found at
${datafusion.native.lib.source}. Run 'cd native && cargo build' (or
'make') before building the JAR.">
+ <condition><not><available
file="${datafusion.native.lib.source}"/></not></condition>
+ </fail>
Review Comment:
On Windows, none of the new native profiles defines
`datafusion.lib.filename`, `datafusion.lib.os`, or `datafusion.lib.arch`, so
this path remains unresolved and the new process-classes fail check aborts `mvn
test/package` even after `cargo build` creates
`native/target/debug/datafusion_jni.dll`. This regresses the previous
`java.library.path` flow before `NativeLibraryLoader` can fall back to
`System.loadLibrary`. One fix is adding a Windows profile mirroring the
Linux/Mac ones: `<datafusion.lib.os>windows</datafusion.lib.os>`,
`<datafusion.lib.arch>amd64</datafusion.lib.arch>`,
`<datafusion.lib.filename>datafusion_jni.dll</datafusion.lib.filename>`. Even
though no Windows binary will be bundled today, the build at least stops
failing, or skipping the copy step on unsupported platforms.
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