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http://issues.apache.org/bugzilla/show_bug.cgi?id=37582 Summary: Simple PUT document request results in exception on Oracle 9i Product: Slide Version: 2.1 Platform: Other OS/Version: Linux Status: NEW Severity: major Priority: P1 Component: Stores AssignedTo: [email protected] ReportedBy: [EMAIL PROTECTED] Environment Details: Linux 2.6 kernel(Suse 9.1) JDK 1.4.2_06 Oracle 9.2 DB and JDBC Driver Description: Upon executing a PUT document request, I receive the following exception(with relevant trace): java.lang.IllegalArgumentException: object is not an instance of declaring class at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.apache.slide.store.impl.rdbms.OracleRDBMSAdapter.storeContent(OracleRDBMSAdapter.java:142) Digging around the problem results from an incorrect usage of java reflection to execute a method. Specifically: In stores section, the class org.apache.slide.store.impl.rdbms.OracleRDBMSAdapter declares the following instance variable: protected Method blobGetOutStreamMethod; The constructor for the class is as follows: public OracleRDBMSAdapter(Service service, Logger logger) throws ClassNotFoundException, NoSuchMethodException { super(service, logger); Class bCls = Class.forName("oracle.sql.BLOB"); blobGetOutStreamMethod = bCls.getMethod("getBinaryOutputStream", new Class[] {}); } Later on, the Adapter attempts to retrieve the java.io.OutputStream for the Blob by making this call: os = (OutputStream) blobGetOutStreamMethod.invoke(bObj, new Object[] {}); Though syntactically correct, this code results in the above exception. In the constructor, the method is retrieved from a Class object and NOT an instance of the Class itself. According to the javadoc for the Method.invoke() call, invoke() will throw: IllegalArgumentException - if the method is an instance method and the specified object argument is not an instance of the class or interface declaring the underlying method Since the method was retrieved from a Class object and not an instance, it's not an Instance method. This is discussed on the Sun Java forums. The correct code is as follows: replace this line(line 142) os = (OutputStream) blobGetOutStreamMethod.invoke(bObj, new Object[] {}); with the following two lines: Method blobGetOutputStreamMethod = bObj.getClass().getMethod("getBinaryOutputStream",new Class[0]); os = (OutputStream) blobGetOutputStreamMethod.invoke(bObj, new Object[0]); and remove the two lines in the constructor. Thanks! -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
