Thomas Mortagne created VELOCITY-924: ----------------------------------------
Summary: Bad cache handling for java.lang.Class methods Key: VELOCITY-924 URL: https://issues.apache.org/jira/browse/VELOCITY-924 Project: Velocity Issue Type: Bug Components: Engine Affects Versions: 2.2 Reporter: Thomas Mortagne Requirement: A binding $var containing an object which class (org.xwiki.MyClass) implementing a {{String getName()}} method. The following code: {code} $var.class.getName() $var.getName() {code} fail with: {noformat} Caused by: org.apache.velocity.exception.MethodInvocationException: Invocation of method 'getName' in class org.xwiki.MyClass threw exception java.lang.IllegalArgumentException: object is not an instance of declaring class at mytemplaye[line 1, column 26] at org.apache.velocity.runtime.parser.node.ASTMethod.handleInvocationException(ASTMethod.java:306) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:239) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:369) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:490) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:423) at org.apache.velocity.Template.merge(Template.java:358) at org.apache.velocity.Template.merge(Template.java:262) at org.xwiki.velocity.internal.DefaultVelocityEngine.evaluate(DefaultVelocityEngine.java:271) ... 69 more Caused by: java.lang.IllegalArgumentException: object is not an instance of declaring class at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.doInvoke(UberspectImpl.java:565) at org.apache.velocity.util.introspection.UberspectImpl$VelMethodImpl.invoke(UberspectImpl.java:548) at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:219) ... 75 more {noformat} The reason is that ClassUtils.getMethod cache does not make any difference between an instance of Class<org.xwiki.MyClass> and and instance of org.xwiki.MyClass so when ASTMethod#execute ask for the second getName() it end up with Class#getName() instead of MyClass#getName(). -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@velocity.apache.org For additional commands, e-mail: dev-h...@velocity.apache.org