if (is != null) {
            log.debugf("Using schema %s", localPathToSchema);
            return is;
         }
         if (log.isDebugEnabled()) {
            log.debugf("Could not find schema on path %s, resolving %s to %s",
                       localPathToSchema, SCHEMA_SYSTEM_PROPERTY, schemaPath());
         }

 <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>exec-maven-plugin</artifactId>
            <version>1.1</version>
            <executions>
               <execution>
                  <phase>process-classes</phase>
                  <goals>
                     <goal>java</goal>
                  </goals>
               </execution>
            </executions>
            <configuration>
               <mainClass>org.infinispan.util.JaxbSchemaGenerator</mainClass>
               <arguments>
                  <argument>${basedir}/src/main/resources/schema</argument>
               </arguments>
            </configuration>
         </plugin>

<plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>exec-maven-plugin</artifactId>
            <executions>
               <execution>
                  <phase>process-resources</phase>
                  <goals>
                     <goal>java</goal>
                  </goals>
               </execution>
            </executions>
            <configuration>
               <mainClass>net.sf.xframe.xsddoc.Main</mainClass>
               <arguments>
                  <argument>-q</argument>
                  <argument>-s</argument>
                  <argument>-t</argument>
                  <argument>"XML Schema for Infinispan"</argument>
                  <argument>-o</argument>
                  <argument>${project.build.directory}/xsd_doc</argument>
                  <argument>${basedir}/src/main/resources/infinispan-5.1.xsd</argument>
               </arguments>
            </configuration>
         </plugin>

2012-02-01 16:14:40,552 DEBUG [org.infinispan.config.InfinispanConfiguration] (main) Could not find schema on path schema/infinispan-config-5.1.xsd, resolving infinispan.config.schema to http://www.infinispan.org/schemas/infinispan-config-5.1.xsd
2012-02-01 16:15:45,115 WARN  [org.infinispan.config.InfinispanConfiguration] (main) ISPN000139: Infinispan configuration schema could not be resolved locally nor fetched from URL. Local path=null, schema path=schema/infinispan-config-5.1.xsd, schema URL=http://www.infinispan.org/schemas/infinispan-config-5.1.xsd