davisusanibar commented on code in PR #13788: URL: https://github.com/apache/arrow/pull/13788#discussion_r938080263
########## docs/source/java/cdata.rst: ########## @@ -91,133 +92,381 @@ without writing JNI bindings ourselves. .. code-block:: xml - <?xml version="1.0" encoding="UTF-8"?> - <project xmlns="http://maven.apache.org/POM/4.0.0"; - xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; - xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd";> - <modelVersion>4.0.0</modelVersion> - - <groupId>org.example</groupId> - <artifactId>java-cdata-example</artifactId> - <version>1.0-SNAPSHOT</version> - - <properties> - <maven.compiler.source>8</maven.compiler.source> - <maven.compiler.target>8</maven.compiler.target> - <arrow.version>8.0.0</arrow.version> - </properties> - <dependencies> - <dependency> - <groupId>org.bytedeco</groupId> - <artifactId>javacpp</artifactId> - <version>1.5.7</version> - </dependency> - <dependency> - <groupId>org.apache.arrow</groupId> - <artifactId>arrow-c-data</artifactId> - <version>${arrow.version}</version> - </dependency> - <dependency> - <groupId>org.apache.arrow</groupId> - <artifactId>arrow-vector</artifactId> - <version>${arrow.version}</version> - </dependency> - <dependency> - <groupId>org.apache.arrow</groupId> - <artifactId>arrow-memory-core</artifactId> - <version>${arrow.version}</version> - </dependency> - <dependency> - <groupId>org.apache.arrow</groupId> - <artifactId>arrow-memory-netty</artifactId> - <version>${arrow.version}</version> - </dependency> - <dependency> - <groupId>org.apache.arrow</groupId> - <artifactId>arrow-format</artifactId> - <version>${arrow.version}</version> - </dependency> - </dependencies> - </project> + <?xml version="1.0" encoding="UTF-8"?> + <project xmlns="http://maven.apache.org/POM/4.0.0"; + xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; + xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd";> + <modelVersion>4.0.0</modelVersion> + + <groupId>org.example</groupId> + <artifactId>java-cdata-example</artifactId> + <version>1.0-SNAPSHOT</version> + + <properties> + <maven.compiler.source>8</maven.compiler.source> + <maven.compiler.target>8</maven.compiler.target> + <arrow.version>8.0.0</arrow.version> + </properties> + <dependencies> + <dependency> + <groupId>org.bytedeco</groupId> + <artifactId>javacpp</artifactId> + <version>1.5.7</version> + </dependency> + <dependency> + <groupId>org.apache.arrow</groupId> + <artifactId>arrow-c-data</artifactId> + <version>${arrow.version}</version> + </dependency> + <dependency> + <groupId>org.apache.arrow</groupId> + <artifactId>arrow-vector</artifactId> + <version>${arrow.version}</version> + </dependency> + <dependency> + <groupId>org.apache.arrow</groupId> + <artifactId>arrow-memory-core</artifactId> + <version>${arrow.version}</version> + </dependency> + <dependency> + <groupId>org.apache.arrow</groupId> + <artifactId>arrow-memory-netty</artifactId> + <version>${arrow.version}</version> + </dependency> + <dependency> + <groupId>org.apache.arrow</groupId> + <artifactId>arrow-format</artifactId> + <version>${arrow.version}</version> + </dependency> + </dependencies> + </project> .. code-block:: java - import org.bytedeco.javacpp.annotation.Platform; - import org.bytedeco.javacpp.annotation.Properties; - import org.bytedeco.javacpp.tools.InfoMap; - import org.bytedeco.javacpp.tools.InfoMapper; - - @Properties( - target = "CDataJavaToCppExample", - value = @Platform( - include = { - "CDataCppBridge.h" - }, - compiler = {"cpp11"}, - linkpath = {"/arrow/cpp/build/debug/"}, - link = {"arrow"} - ) - ) - public class CDataJavaConfig implements InfoMapper { - - @Override - public void map(InfoMap infoMap) { - } - } + import org.bytedeco.javacpp.annotation.Platform; + import org.bytedeco.javacpp.annotation.Properties; + import org.bytedeco.javacpp.tools.InfoMap; + import org.bytedeco.javacpp.tools.InfoMapper; + + @Properties( + target = "CDataJavaToCppExample", + value = @Platform( + include = { + "CDataCppBridge.h" + }, + compiler = {"cpp11"}, + linkpath = {"/arrow/cpp/build/debug/"}, + link = {"arrow"} + ) + ) + public class CDataJavaConfig implements InfoMapper { + + @Override + public void map(InfoMap infoMap) { + } + } .. code-block:: shell - # Compile our Java code - $ javac -cp javacpp-1.5.7.jar CDataJavaConfig.java + # Compile our Java code + $ javac -cp javacpp-1.5.7.jar CDataJavaConfig.java - # Generate CDataInterfaceLibrary - $ java -jar javacpp-1.5.7.jar CDataJavaConfig.java + # Generate CDataInterfaceLibrary + $ java -jar javacpp-1.5.7.jar CDataJavaConfig.java - # Generate libjniCDataInterfaceLibrary.dylib - $ java -jar javacpp-1.5.7.jar CDataJavaToCppExample.java + # Generate libjniCDataInterfaceLibrary.dylib + $ java -jar javacpp-1.5.7.jar CDataJavaToCppExample.java - # Validate libjniCDataInterfaceLibrary.dylib created - $ otool -L macosx-x86_64/libjniCDataJavaToCppExample.dylib - macosx-x86_64/libjniCDataJavaToCppExample.dylib: - libjniCDataJavaToCppExample.dylib (compatibility version 0.0.0, current version 0.0.0) - @rpath/libarrow.800.dylib (compatibility version 800.0.0, current version 800.0.0) - /usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 1200.3.0) - /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1311.0.0) + # Validate libjniCDataInterfaceLibrary.dylib created + $ otool -L macosx-x86_64/libjniCDataJavaToCppExample.dylib + macosx-x86_64/libjniCDataJavaToCppExample.dylib: + libjniCDataJavaToCppExample.dylib (compatibility version 0.0.0, current version 0.0.0) + @rpath/libarrow.800.dylib (compatibility version 800.0.0, current version 800.0.0) + /usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 1200.3.0) + /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1311.0.0) **Java Test** Let's create a Java class to test our bridge: .. code-block:: java - import org.apache.arrow.c.ArrowArray; - import org.apache.arrow.c.ArrowSchema; - import org.apache.arrow.c.Data; - import org.apache.arrow.memory.BufferAllocator; - import org.apache.arrow.memory.RootAllocator; - import org.apache.arrow.vector.BigIntVector; - - public class TestCDataInterface { - public static void main(String[] args) { - try( - BufferAllocator allocator = new RootAllocator(); - ArrowSchema arrowSchema = ArrowSchema.allocateNew(allocator); - ArrowArray arrowArray = ArrowArray.allocateNew(allocator) - ){ - CDataJavaToCppExample.FillInt64Array( - arrowSchema.memoryAddress(), arrowArray.memoryAddress()); - try( - BigIntVector bigIntVector = (BigIntVector) Data.importVector( - allocator, arrowArray, arrowSchema, null) - ){ - System.out.println("C++-allocated array: " + bigIntVector); - } - } - } - } + import org.apache.arrow.c.ArrowArray; + import org.apache.arrow.c.ArrowSchema; + import org.apache.arrow.c.Data; + import org.apache.arrow.memory.BufferAllocator; + import org.apache.arrow.memory.RootAllocator; + import org.apache.arrow.vector.BigIntVector; + + public class TestCDataInterface { + public static void main(String[] args) { + try( + BufferAllocator allocator = new RootAllocator(); + ArrowSchema arrowSchema = ArrowSchema.allocateNew(allocator); + ArrowArray arrowArray = ArrowArray.allocateNew(allocator) + ){ + CDataJavaToCppExample.FillInt64Array( + arrowSchema.memoryAddress(), arrowArray.memoryAddress()); + try( + BigIntVector bigIntVector = (BigIntVector) Data.importVector( + allocator, arrowArray, arrowSchema, null) + ){ + System.out.println("C++-allocated array: " + bigIntVector); + } + } + } + } + +.. code-block:: shell + + C++-allocated array: [1, 2, 3, null, 5, 6, 7, 8, 9, 10] + +Share an Int32 array from Java to C++ +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +**Java Side** + +For this example, we will build a JAR with all dependencies bundled. + +.. code-block:: xml + + <?xml version="1.0" encoding="UTF-8"?> + <project xmlns="http://maven.apache.org/POM/4.0.0"; + xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; + xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd";> + <modelVersion>4.0.0</modelVersion> + <groupId>org.example</groupId> + <artifactId>cpptojava</artifactId> + <version>1.0-SNAPSHOT</version> + <properties> + <maven.compiler.source>11</maven.compiler.source> + <maven.compiler.target>11</maven.compiler.target> + <arrow.version>8.0.0</arrow.version> + </properties> + <repositories> + <repository> + <id>arrow-nightly</id> + <url>https://nightlies.apache.org/arrow/java</url> + </repository> + </repositories> + <dependencies> + <dependency> + <groupId>org.apache.arrow</groupId> + <artifactId>arrow-c-data</artifactId> + <version>${arrow.version}</version> + </dependency> + <dependency> + <groupId>org.apache.arrow</groupId> + <artifactId>arrow-memory-netty</artifactId> + <version>${arrow.version}</version> + </dependency> + </dependencies> + <build> + <plugins> + <plugin> + <groupId>org.apache.maven.plugins</groupId> + <artifactId>maven-assembly-plugin</artifactId> + <executions> + <execution> + <phase>package</phase> + <goals> + <goal>single</goal> + </goals> + <configuration> + <archive> + <manifest> + <mainClass> + ToBeCalledByCpp + </mainClass> + </manifest> + </archive> + <descriptorRefs> + <descriptorRef>jar-with-dependencies</descriptorRef> + </descriptorRefs> + </configuration> + </execution> + </executions> + </plugin> + </plugins> + </build> + </project> + +.. code-block:: java + + import org.apache.arrow.c.ArrowArray; + import org.apache.arrow.c.ArrowSchema; + import org.apache.arrow.c.Data; + import org.apache.arrow.memory.BufferAllocator; + import org.apache.arrow.memory.RootAllocator; + import org.apache.arrow.vector.FieldVector; + import org.apache.arrow.vector.IntVector; + import org.apache.arrow.vector.VectorSchemaRoot; + + import java.util.Arrays; + + public class ToBeCalledByCpp { + final static BufferAllocator allocator = new RootAllocator(); + + public static void fillVector(long schemaAddress, long arrayAddress){ + try (ArrowArray arrow_array = ArrowArray.wrap(arrayAddress); + ArrowSchema arrow_schema = ArrowSchema.wrap(schemaAddress) ) { + Data.exportVector(allocator, populateFieldVectorToExport(), null, arrow_array, arrow_schema); + } + } + + public static FieldVector populateFieldVectorToExport(){ + IntVector intVector = new IntVector("int-to-export", allocator); + intVector.allocateNew(3); + intVector.setSafe(0, 1); + intVector.setSafe(1, 2); + intVector.setSafe(2, 3); + intVector.setValueCount(3); + System.out.println("[Java] FieldVector: \n" + intVector); + return intVector; + } + + public static void fillVectorSchemaRoot(long schemaAddress, long arrayAddress){ + try (ArrowArray arrow_array = ArrowArray.wrap(arrayAddress); + ArrowSchema arrow_schema = ArrowSchema.wrap(schemaAddress) ) { + Data.exportVectorSchemaRoot(allocator, populateVectorSchemaRootToExport(), null, arrow_array, arrow_schema); + } + } + + public static VectorSchemaRoot populateVectorSchemaRootToExport(){ + IntVector intVector = new IntVector("age-to-export", allocator); + intVector.setSafe(0, 10); + intVector.setSafe(1, 20); + intVector.setSafe(2, 30); + VectorSchemaRoot root = new VectorSchemaRoot(Arrays.asList(intVector)); + root.setRowCount(3); + System.out.println("[Java] VectorSchemaRoot: \n" + root.contentToTSVString()); + return root; + } + } + +Build the JAR and copy it to the C++ project. + +.. code-block:: shell + + $ mvn clean install + $ cp target/cpptojava-1.0-SNAPSHOT-jar-with-dependencies.jar <c++ project path>/cpptojava.jar + +**C++ Side** + +This application uses JNI to call Java code, but transfers data (zero-copy) via the C Data Interface instead. + +.. code-block:: cpp + + #include <iostream> + #include <arrow/api.h> + #include <arrow/c/bridge.h> + #include <jni.h> + + JNIEnv *CreateVM(JavaVM **jvm) { + JNIEnv *env; + JavaVMInitArgs vm_args; + JavaVMOption options[2]; + options[0].optionString = "-Djava.class.path=cpptojava.jar"; // java jar name + options[1].optionString = "-DXcheck:jni:pedantic"; + vm_args.version = JNI_VERSION_1_8; + vm_args.nOptions = 2; + vm_args.options = options; + int status = JNI_CreateJavaVM(jvm, (void **) &env, &vm_args); + if (status < 0) { + std::cout << "\n<<<<< Unable to Launch JVM >>>>>\n" << std::endl; + return nullptr; + } + return env; + } + + int main() { + JNIEnv *env; + JavaVM *jvm; + env = CreateVM(&jvm); + if (env == nullptr) return EXIT_FAILURE; + jclass javaClassToBeCalledByCpp = env->FindClass("ToBeCalledByCpp"); + if (javaClassToBeCalledByCpp != nullptr) { + jmethodID fillVector = env->GetStaticMethodID(javaClassToBeCalledByCpp, + "fillVector", + "(JJ)V"); + if (fillVector != nullptr) { + struct ArrowSchema arrowSchema; + struct ArrowArray arrowArray; + std::cout << "\n<<<<< C++ to Java for Arrays >>>>>\n" << std::endl; + env->CallStaticVoidMethod(javaClassToBeCalledByCpp, fillVector, + reinterpret_cast<uintptr_t>(&arrowSchema), + reinterpret_cast<uintptr_t>(&arrowArray)); + auto resultImportArray = arrow::ImportArray(&arrowArray, &arrowSchema); + std::shared_ptr<arrow::Array> array = resultImportArray.ValueOrDie(); + std::cout << "[C++] Array: " << array->ToString() << std::endl; + } else { + std::cout << "Could not find fillVector method\n" << std::endl; + return EXIT_FAILURE; + } + jmethodID fillVectorSchemaRoot = env->GetStaticMethodID(javaClassToBeCalledByCpp, + "fillVectorSchemaRoot", + "(JJ)V"); + if (fillVectorSchemaRoot != nullptr) { + struct ArrowSchema arrowSchema; + struct ArrowArray arrowArray; + std::cout << "\n<<<<< C++ to Java for RecordBatch >>>>>\n" << std::endl; + env->CallStaticVoidMethod(javaClassToBeCalledByCpp, fillVectorSchemaRoot, + static_cast<long>(reinterpret_cast<uintptr_t>(&arrowSchema)), Review Comment: Thank you ########## docs/source/java/cdata.rst: ########## @@ -91,133 +92,381 @@ without writing JNI bindings ourselves. .. code-block:: xml - <?xml version="1.0" encoding="UTF-8"?> - <project xmlns="http://maven.apache.org/POM/4.0.0"; - xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; - xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd";> - <modelVersion>4.0.0</modelVersion> - - <groupId>org.example</groupId> - <artifactId>java-cdata-example</artifactId> - <version>1.0-SNAPSHOT</version> - - <properties> - <maven.compiler.source>8</maven.compiler.source> - <maven.compiler.target>8</maven.compiler.target> - <arrow.version>8.0.0</arrow.version> - </properties> - <dependencies> - <dependency> - <groupId>org.bytedeco</groupId> - <artifactId>javacpp</artifactId> - <version>1.5.7</version> - </dependency> - <dependency> - <groupId>org.apache.arrow</groupId> - <artifactId>arrow-c-data</artifactId> - <version>${arrow.version}</version> - </dependency> - <dependency> - <groupId>org.apache.arrow</groupId> - <artifactId>arrow-vector</artifactId> - <version>${arrow.version}</version> - </dependency> - <dependency> - <groupId>org.apache.arrow</groupId> - <artifactId>arrow-memory-core</artifactId> - <version>${arrow.version}</version> - </dependency> - <dependency> - <groupId>org.apache.arrow</groupId> - <artifactId>arrow-memory-netty</artifactId> - <version>${arrow.version}</version> - </dependency> - <dependency> - <groupId>org.apache.arrow</groupId> - <artifactId>arrow-format</artifactId> - <version>${arrow.version}</version> - </dependency> - </dependencies> - </project> + <?xml version="1.0" encoding="UTF-8"?> + <project xmlns="http://maven.apache.org/POM/4.0.0"; + xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; + xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd";> + <modelVersion>4.0.0</modelVersion> + + <groupId>org.example</groupId> + <artifactId>java-cdata-example</artifactId> + <version>1.0-SNAPSHOT</version> + + <properties> + <maven.compiler.source>8</maven.compiler.source> + <maven.compiler.target>8</maven.compiler.target> + <arrow.version>8.0.0</arrow.version> + </properties> + <dependencies> + <dependency> + <groupId>org.bytedeco</groupId> + <artifactId>javacpp</artifactId> + <version>1.5.7</version> + </dependency> + <dependency> + <groupId>org.apache.arrow</groupId> + <artifactId>arrow-c-data</artifactId> + <version>${arrow.version}</version> + </dependency> + <dependency> + <groupId>org.apache.arrow</groupId> + <artifactId>arrow-vector</artifactId> + <version>${arrow.version}</version> + </dependency> + <dependency> + <groupId>org.apache.arrow</groupId> + <artifactId>arrow-memory-core</artifactId> + <version>${arrow.version}</version> + </dependency> + <dependency> + <groupId>org.apache.arrow</groupId> + <artifactId>arrow-memory-netty</artifactId> + <version>${arrow.version}</version> + </dependency> + <dependency> + <groupId>org.apache.arrow</groupId> + <artifactId>arrow-format</artifactId> + <version>${arrow.version}</version> + </dependency> + </dependencies> + </project> .. code-block:: java - import org.bytedeco.javacpp.annotation.Platform; - import org.bytedeco.javacpp.annotation.Properties; - import org.bytedeco.javacpp.tools.InfoMap; - import org.bytedeco.javacpp.tools.InfoMapper; - - @Properties( - target = "CDataJavaToCppExample", - value = @Platform( - include = { - "CDataCppBridge.h" - }, - compiler = {"cpp11"}, - linkpath = {"/arrow/cpp/build/debug/"}, - link = {"arrow"} - ) - ) - public class CDataJavaConfig implements InfoMapper { - - @Override - public void map(InfoMap infoMap) { - } - } + import org.bytedeco.javacpp.annotation.Platform; + import org.bytedeco.javacpp.annotation.Properties; + import org.bytedeco.javacpp.tools.InfoMap; + import org.bytedeco.javacpp.tools.InfoMapper; + + @Properties( + target = "CDataJavaToCppExample", + value = @Platform( + include = { + "CDataCppBridge.h" + }, + compiler = {"cpp11"}, + linkpath = {"/arrow/cpp/build/debug/"}, + link = {"arrow"} + ) + ) + public class CDataJavaConfig implements InfoMapper { + + @Override + public void map(InfoMap infoMap) { + } + } .. code-block:: shell - # Compile our Java code - $ javac -cp javacpp-1.5.7.jar CDataJavaConfig.java + # Compile our Java code + $ javac -cp javacpp-1.5.7.jar CDataJavaConfig.java - # Generate CDataInterfaceLibrary - $ java -jar javacpp-1.5.7.jar CDataJavaConfig.java + # Generate CDataInterfaceLibrary + $ java -jar javacpp-1.5.7.jar CDataJavaConfig.java - # Generate libjniCDataInterfaceLibrary.dylib - $ java -jar javacpp-1.5.7.jar CDataJavaToCppExample.java + # Generate libjniCDataInterfaceLibrary.dylib + $ java -jar javacpp-1.5.7.jar CDataJavaToCppExample.java - # Validate libjniCDataInterfaceLibrary.dylib created - $ otool -L macosx-x86_64/libjniCDataJavaToCppExample.dylib - macosx-x86_64/libjniCDataJavaToCppExample.dylib: - libjniCDataJavaToCppExample.dylib (compatibility version 0.0.0, current version 0.0.0) - @rpath/libarrow.800.dylib (compatibility version 800.0.0, current version 800.0.0) - /usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 1200.3.0) - /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1311.0.0) + # Validate libjniCDataInterfaceLibrary.dylib created + $ otool -L macosx-x86_64/libjniCDataJavaToCppExample.dylib + macosx-x86_64/libjniCDataJavaToCppExample.dylib: + libjniCDataJavaToCppExample.dylib (compatibility version 0.0.0, current version 0.0.0) + @rpath/libarrow.800.dylib (compatibility version 800.0.0, current version 800.0.0) + /usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 1200.3.0) + /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1311.0.0) **Java Test** Let's create a Java class to test our bridge: .. code-block:: java - import org.apache.arrow.c.ArrowArray; - import org.apache.arrow.c.ArrowSchema; - import org.apache.arrow.c.Data; - import org.apache.arrow.memory.BufferAllocator; - import org.apache.arrow.memory.RootAllocator; - import org.apache.arrow.vector.BigIntVector; - - public class TestCDataInterface { - public static void main(String[] args) { - try( - BufferAllocator allocator = new RootAllocator(); - ArrowSchema arrowSchema = ArrowSchema.allocateNew(allocator); - ArrowArray arrowArray = ArrowArray.allocateNew(allocator) - ){ - CDataJavaToCppExample.FillInt64Array( - arrowSchema.memoryAddress(), arrowArray.memoryAddress()); - try( - BigIntVector bigIntVector = (BigIntVector) Data.importVector( - allocator, arrowArray, arrowSchema, null) - ){ - System.out.println("C++-allocated array: " + bigIntVector); - } - } - } - } + import org.apache.arrow.c.ArrowArray; + import org.apache.arrow.c.ArrowSchema; + import org.apache.arrow.c.Data; + import org.apache.arrow.memory.BufferAllocator; + import org.apache.arrow.memory.RootAllocator; + import org.apache.arrow.vector.BigIntVector; + + public class TestCDataInterface { + public static void main(String[] args) { + try( + BufferAllocator allocator = new RootAllocator(); + ArrowSchema arrowSchema = ArrowSchema.allocateNew(allocator); + ArrowArray arrowArray = ArrowArray.allocateNew(allocator) + ){ + CDataJavaToCppExample.FillInt64Array( + arrowSchema.memoryAddress(), arrowArray.memoryAddress()); + try( + BigIntVector bigIntVector = (BigIntVector) Data.importVector( + allocator, arrowArray, arrowSchema, null) + ){ + System.out.println("C++-allocated array: " + bigIntVector); + } + } + } + } + +.. code-block:: shell + + C++-allocated array: [1, 2, 3, null, 5, 6, 7, 8, 9, 10] + +Share an Int32 array from Java to C++ +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +**Java Side** + +For this example, we will build a JAR with all dependencies bundled. + +.. code-block:: xml + + <?xml version="1.0" encoding="UTF-8"?> + <project xmlns="http://maven.apache.org/POM/4.0.0"; + xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; + xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd";> + <modelVersion>4.0.0</modelVersion> + <groupId>org.example</groupId> + <artifactId>cpptojava</artifactId> + <version>1.0-SNAPSHOT</version> + <properties> + <maven.compiler.source>11</maven.compiler.source> + <maven.compiler.target>11</maven.compiler.target> + <arrow.version>8.0.0</arrow.version> + </properties> + <repositories> + <repository> + <id>arrow-nightly</id> + <url>https://nightlies.apache.org/arrow/java</url> Review Comment: Deleted -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
