WARNING: Unable to get @MinOccurs annotation from type com.sun.xml.bind.v2.model.impl.TypeRefImpl@667de82c

[maprohu]

Hello,

I am using the jaxb2-maven-plugin to generate XML Schema from annotated Java classes. Everything seems to work fine so far, except that I get tons of warnings in the Maven logs during the build.

The Java class:

package jaxb.factets.sandbox;

import javax.xml.bind.annotation.Facets;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlType;

@XmlType(namespace="jaxb-sandbox")
@XmlAccessorType(XmlAccessType.FIELD)
public class Boo {

    @Facets(minInclusive="100")
    int someNumber;

}

The pom.xml:

<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>jaxb-facets</groupId>
    <artifactId>jaxb-facets-sandbox</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>7</source>
                    <target>7</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>jaxb2-maven-plugin</artifactId>
                <version>1.6</version>
                <dependencies>
                    <dependency>
                        <groupId>com.sun.xml.bind</groupId>
                        <artifactId>jaxb-impl</artifactId>
                        <version>2.2.6-facets-1.3.0</version>
                    </dependency>
                    <dependency>
                        <groupId>javax.xml.bind</groupId>
                        <artifactId>jaxb-api</artifactId>
                        <version>2.2.7-facets-1.0.5</version>
                    </dependency>
                    <dependency>
                        <groupId>com.sun.xml.bind</groupId>
                        <artifactId>jaxb-xjc</artifactId>
                        <version>2.2.6</version>
                        <exclusions>
                            <exclusion>
                                <groupId>javax.xml.bind</groupId>
                                <artifactId>jaxb-api</artifactId>
                            </exclusion>
                            <exclusion>
                                <groupId>com.sun.xml.bind</groupId>
                                <artifactId>jaxb-impl</artifactId>
                            </exclusion>
                        </exclusions>
                    </dependency>
                </dependencies>
                <executions>
                    <execution>
                        <id>schemagen</id>
                        <goals>
                            <goal>schemagen</goal>
                        </goals>
                        <configuration>
                            <includes>
                                <include>**/*.java</include>
                            </includes>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

    <dependencies>
        <dependency>
            <groupId>javax.xml.bind</groupId>
            <artifactId>jaxb-api</artifactId>
            <version>2.2.7-facets-1.0.5</version>
        </dependency>
    </dependencies>

    <repositories>
        <repository>
            <id>github-repo-releases</id>
            <url>https://raw.github.com/whummer/jaxb-facets/master/releases</url>
        </repository>
    </repositories>

</project>

The output log:

[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building jaxb-facets-sandbox 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ jaxb-facets-sandbox ---
[INFO] 
[INFO] --- jaxb2-maven-plugin:1.6:schemagen (schemagen) @ jaxb-facets-sandbox ---
Jan 09, 2015 5:34:12 PM at.ac.tuwien.infosys.jaxb.XmlSchemaEnhancer writeCustomOccurs
WARNING: Unable to get @MinOccurs annotation from type com.sun.xml.bind.v2.model.impl.TypeRefImpl@667de82c
java.lang.ClassCastException: com.sun.tools.javac.code.Type$ClassType cannot be cast to java.lang.Class
    at at.ac.tuwien.infosys.jaxb.XmlSchemaEnhancer.getAnnotationOfProperty(XmlSchemaEnhancer.java:908)
    at at.ac.tuwien.infosys.jaxb.XmlSchemaEnhancer.writeCustomOccurs(XmlSchemaEnhancer.java:466)
    at com.sun.xml.bind.v2.schemagen.XmlSchemaGenerator$Namespace$2.write(XmlSchemaGenerator.java:1178)
    at com.sun.xml.bind.v2.schemagen.TreeWrapper.write(TreeWrapper.java:90)
    at com.sun.xml.bind.v2.schemagen.Tree$Group.write(Tree.java:255)
    at com.sun.xml.bind.v2.schemagen.Tree.write(Tree.java:138)
    at com.sun.xml.bind.v2.schemagen.Tree.write(Tree.java:141)
    at com.sun.xml.bind.v2.schemagen.XmlSchemaGenerator$Namespace.writeClass(XmlSchemaGenerator.java:1039)
    at com.sun.xml.bind.v2.schemagen.XmlSchemaGenerator$Namespace.writeTo(XmlSchemaGenerator.java:721)
    at com.sun.xml.bind.v2.schemagen.XmlSchemaGenerator$Namespace.access$800(XmlSchemaGenerator.java:519)
    at com.sun.xml.bind.v2.schemagen.XmlSchemaGenerator.write(XmlSchemaGenerator.java:501)
    at com.sun.tools.xjc.api.impl.j2s.JAXBModelImpl.generateSchema(JAXBModelImpl.java:183)
    at com.sun.tools.jxc.ap.SchemaGenerator.process(SchemaGenerator.java:115)
    at com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:793)
    at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:722)
    at com.sun.tools.javac.processing.JavacProcessingEnvironment.access$1700(JavacProcessingEnvironment.java:97)
    at com.sun.tools.javac.processing.JavacProcessingEnvironment$Round.run(JavacProcessingEnvironment.java:1029)
    at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1163)
    at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1108)
    at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:824)
    at com.sun.tools.javac.main.Main.compile(Main.java:439)
    at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:132)
    at com.sun.tools.jxc.SchemaGenerator$Runner.compile(SchemaGenerator.java:240)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.sun.tools.jxc.SchemaGenerator.run(SchemaGenerator.java:171)
    at com.sun.tools.jxc.SchemaGenerator.run(SchemaGenerator.java:86)
    at org.codehaus.mojo.jaxb2.AbstractSchemagenMojo.execute(AbstractSchemagenMojo.java:215)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:120)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:347)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:154)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:582)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)

[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ jaxb-facets-sandbox ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ jaxb-facets-sandbox ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\dev\grails\ws\jaxb-facets-sandbox\target\classes
[INFO] 
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ jaxb-facets-sandbox ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ jaxb-facets-sandbox ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ jaxb-facets-sandbox ---
[INFO] 
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ jaxb-facets-sandbox ---
[INFO] Building jar: D:\dev\grails\ws\jaxb-facets-sandbox\target\jaxb-facets-sandbox-0.0.1-SNAPSHOT.jar
[INFO] 
[INFO] --- maven-install-plugin:2.4:install (default-install) @ jaxb-facets-sandbox ---
[INFO] Installing D:\dev\grails\ws\jaxb-facets-sandbox\target\jaxb-facets-sandbox-0.0.1-SNAPSHOT.jar to C:\Users\pappmar\.m2\repository\jaxb-facets\jaxb-facets-sandbox\0.0.1-SNAPSHOT\jaxb-facets-sandbox-0.0.1-SNAPSHOT.jar
[INFO] Installing D:\dev\grails\ws\jaxb-facets-sandbox\pom.xml to C:\Users\pappmar\.m2\repository\jaxb-facets\jaxb-facets-sandbox\0.0.1-SNAPSHOT\jaxb-facets-sandbox-0.0.1-SNAPSHOT.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.218 s
[INFO] Finished at: 2015-01-09T17:34:13+00:00
[INFO] Final Memory: 20M/226M
[INFO] ------------------------------------------------------------------------

The number of log messages depends on the number of domain classes.

The generated XML schema is fine:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<xs:schema version="1.0" targetNamespace="jaxb-sandbox" xmlns:xs="http://www.w3.org/2001/XMLSchema">

  <xs:complexType name="boo">
    <xs:sequence>
      <xs:element name="someNumber">
        <xs:simpleType>
          <xs:restriction base="xs:int">
            <xs:minInclusive value="100"/>
          </xs:restriction>
        </xs:simpleType>
      </xs:element>
    </xs:sequence>
  </xs:complexType>
</xs:schema>

It is not a blocking issue, I would just like to get rid of the warnings in the build logs. Is that possible?

Regards,
Marton

[whummer]

Thanks for reporting. Fixed in commit 9b83ec4