[hibernate-issues] [Hibernate-JIRA] Issue Comment Edited: (HHH-7254) Using Eclipse's JarResrcLoader, an exception occurs: java.lang.StringIndexOutOfBoundsException: String index out of range: -1

Using Eclipse's JarResrcLoader, an exception occurs: java.lang.StringIndexOutOfBoundsException: String index out of range: -1 ----------------------------------------------------------------------------------------------------------------------------- Key: HHH-7254 URL: https://hibernate.onjira.com/browse/HHH-7254 Project: Hibernate ORM Issue Type: Bug Components: entity-manager Affects Versions: 3.6.10, 4.1.1 Environment: Hibernate Core 3.6.10, Windows 7 Enterprise, Java SE 1.6.31, DB: Oracle 11.2.0.2, IDE: Eclipse Indigo Reporter: Thomas Siegbert Labels: JarResrcLoader, hibernate, jar Attachments: export_jar_in_jar.jar, export_libs_outside.rar, JarVisitorFactoryTest.java, JarVisitorFactoryTest.java, log.txt, log.txt Original Estimate: 8h Remaining Estimate: 8h We have a project with a lot of jars. For delivering, we want to pack all jars and the binary code in one executable jar. To build this executable jar, we use the export-functionality from Eclipse. In the wizard in Eclipse, we use the following option for "Library handling": "Package required libraries into generated JAR". If I call this generated executable jar, I will get the following exception: {quote} Exception in thread "main" java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:58) Caused by: javax.persistence.PersistenceException: Unable to configure EntityManagerFactory at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:378) at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:56) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47) at my.project.Main.main(Main.java:20) ... 5 more Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: -1 at java.lang.String.substring(Unknown Source) at org.hibernate.ejb.packaging.JarVisitorFactory.getJarURLFromURLEntry(JarVisitorFactory.java:55) at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java: 344) ... 9 more {quote} If I do not pack all jars in one jar (instead, I use a sub-folder outside the jar containing all libs), the program works fine. Probably, I have already identified the issue: In the method "_org.hibernate.ejb.packaging.JarVisitorFactory.getJarURLFromURLEntry_" there is the following code line: {quote} file = file.substring( 0, file.length() - entry.length() ); {quote} This works fine, if _file.length()_ is equal or greater than _entry.length()_. In my case ("Jars-in-Jar") the variables in this method got the following content: {quote} file := META-INF/persistence.xml entry := /META-INF/persistence.xml url.toString := rsrc:META-INF/persistence.xml {quote} Thus, _file.length()_ < _entry.length()_ and the exception will be raised. In our project, we fixed it as follows: {quote} file = file.substring( 0, *Math.max( 0, file.length() - entry.length() )* ); {quote} But this is only a suggestion and we cannot foresee any side effects (especially, we do not use an application server). I attached the following files: * JarVisitorFactoryTest.java -> Unit-Tests (which fails using 3.6.10) * export_jar_in_jar.jar -> For reproduction (exception will raised). It is a small project. * export_libs_outside.rar -> Please unpack. This version works fine, because the libs are not within the jar. * log.txt -> stacktrace of the exception.