My bad, I had forgotten to attach my pom.xml file.
On Sun, Jul 26, 2020 at 7:47 PM Amit Mathapati <amitmathap...@gmail.com> wrote: > > > <https://stackoverflow.com/posts/63105213/timeline> > > Hello Users, > > > I am trying to modify an mvel2 library open source code dating back from < > 2010. https://github.com/mvel/mvel > > THis is a maven project. > > I recently downloaded the source code and when I tried to compile the > project, it gives an error message. > > public Class<?> defineClassX(String className, byte[] b, int off, int len) { > if (sunJVM) { > return ((Unsafe) sunUnsafe).defineClass(className, b, off, len); > } > else { > return super.defineClass(className, b, off, len); > } > } > > Error message: Error:(59,40) java: method defineClass in class > sun.misc.Unsafe cannot be applied to given types; > > mvel2 2.0.16 seems to have built with Java 1.5 but in my recent > environment it is Java 1.8 and the "defineClass" method definition has > changed. > > New Method definition in Java 1.8 : > > public native Class<?> defineClass(String var1, byte[] var2, int var3, int > var4, ClassLoader var5, ProtectionDomain var6); > > What is the workaround for this? > > Some options I tried: > > 1. > > Passing in null values for ClassLoaded and ProtectionDomain > 2. > > in pom.xml, under: > > <plugins> > <plugin> > <groupId>org.apache.maven.plugins</groupId> > <artifactId>maven-compiler-plugin</artifactId> > <version>3.6.2</version> > <configuration> > <source>1.6</source> > <target>1.6</target> > <encoding>UTF-8</encoding> > <compilerArgs> > <compilerArg>-XDignore.symbol.file</compilerArg> > </compilerArgs> > </configuration> > </plugin> > > a) I tried passing in 1.5 but it fails with same error > b) Tried the compilerArgs but no luck either? > > > 1. Tip from VGR below in the comments to remove the if(sunJVM) block > causes all test cases to fail when building the maven package. > > I feel the issue seems to be that, since the source code package was built > with Java 1.5 and now since I am building with the latest Java 1.8 version, > it is failing. > > Can someone suggest a workaround for this? >
<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/maven-v4_0_0.xsd";> <modelVersion>4.0.0</modelVersion> <groupId>org.mvel</groupId> <artifactId>mvel2</artifactId> <packaging>jar</packaging> <version>2.0.16-LKDN</version> <name>mvel</name> <url>http://mvel.codehaus.org/</url> <scm> <developerConnection>scm:svn:https://svn.codehaus.org/mvel/tags/mvel2-2.0.16</developerConnection> </scm> <pluginRepositories> <pluginRepository> <id>apache-snapshots</id> <name>Apache Snapshot Repository</name> <url>http://repository.apache.org/snapshots/</url> <snapshots> <enabled>true</enabled> </snapshots> </pluginRepository> </pluginRepositories> <build> <extensions> <extension> <groupId>org.apache.maven.wagon</groupId> <artifactId>wagon-webdav</artifactId> <version>1.0-beta-2</version> </extension> </extensions> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.3</version> <configuration> <source>1.5</source> <target>1.5</target> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <configuration> <archive> <manifest> <mainClass>org.mvel2.sh.Main</mainClass> <packageName>org.mvel2</packageName> </manifest> </archive> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-surefire-plugin</artifactId <configuration> <childDelegation>true</childDelegation> <systemProperties> <property> <name>mvel.disable.jit</name> <value>true</value> </property> <property> <name>file.encoding</name> <value>UTF-8</value> </property> </systemProperties> <includes> <include>**/*Test.java</include> <include>**/*Tests.java</include> <include>**/UsageDemos.java</include> </includes> <excludes> <exclude>**/CompiledUnitTestEx.java</exclude> <exclude>**/PerfTest.java</exclude> <exclude>**/DroolsTest.java</exclude> <exclude>**/FailureTests.java</exclude> <exclude>**/PerformanceTest.java</exclude> <exclude>**/CompiledPerformanceTests.java</exclude> <exclude>**/MVELThreadTest.java</exclude> </excludes> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-release-plugin</artifactId> <version>2.0-beta-9</version> <configuration> <tagBase>https://svn.codehaus.org/mvel/tags/</tagBase> <!-- See http://jira.codehaus.org/browse/SCM-406 --> <remoteTagging>false</remoteTagging> <!-- Further non-mandatory but useful settings... --> <preparationGoals>clean install</preparationGoals> <autoVersionSubmodules>true</autoVersionSubmodules> </configuration> </plugin> <plugin> <artifactId>maven-jar-plugin</artifactId> <configuration> <archive> <manifestFile>META-INF/MANIFEST.MF</manifestFile> </archive> </configuration> </plugin> <plugin> <groupId>org.apache.felix</groupId> <artifactId>maven-bundle-plugin</artifactId> <version>2.0.1</version> <extensions>true</extensions> <executions> <execution> <id>manifest</id> <phase>process-classes</phase> <goals> <goal>manifest</goal> </goals> </execution> </executions> <configuration> <manifestLocation>META-INF</manifestLocation> <instructions> <Bundle-SymbolicName>org.mvel2</Bundle-SymbolicName> <Bundle-Name>mvel2</Bundle-Name> </instructions> </configuration> </plugin> </plugins> </build> <reporting> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-surefire-report-plugin</artifactId> </plugin> </plugins> </reporting> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>com.thoughtworks.xstream</groupId> <artifactId>xstream</artifactId> <version>1.3.1</version> <scope>test</scope> </dependency> <!--<dependency>--> <!--<groupId>org.hibernate</groupId>--> <!--<artifactId>ejb3-persistence</artifactId>--> <!--<version>1.0.2.GA</version>--> <!--<scope>test</scope>--> <!--</dependency> --> </dependencies> <distributionManagement> <!-- use the following if you're not using a snapshot version. --> <repository> <id>codehaus.org</id> <name>Codehaus Maven Repository</name> <url>dav:https://dav.codehaus.org/repository/mvel/</url> </repository> <!-- use the following if you ARE using a snapshot version. --> <snapshotRepository> <id>codehaus.org</id> <name>Codehaus Snapshot Maven Repository</name> <url>dav:https://dav.codehaus.org/snapshots.repository/mvel/</url> <uniqueVersion>false</uniqueVersion> </snapshotRepository> </distributionManagement> </project>
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