[CAY-1519] Application deadlock trying to guess static constant fields

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 3.1M1
• Fix Version/s: 3.1M2
• Component/s: Core Library
• Environment: java version "1.6.0_20"; Java(TM) SE Runtime Environment (build 1.6.0_20-b02); Java HotSpot(TM) Server VM (build 16.3-b01, mixed mode); SunOS pa-app01 5.10 Generic_142901-12 i86pc i386 i86pc
• Assignee: Andrus Adamchik
• Reporter: Andrus Adamchik
• Created: 30/Nov/10 09:51
• Updated: 30/Jan/11 01:35
• Resolved: 30/Jan/11 01:35

Description

Per CAY-1213 we are trying to guess if a String constant in an expression is a path or an enum or a constant. This code deadlocks the app for me under load on Java 6:

java.lang.Thread.State: BLOCKED (on object monitor)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.apache.cayenne.util.Util.getJavaClass(Util.java:663)
at org.apache.cayenne.util.Util.getClassFieldValue(Util.java:763)
at org.apache.cayenne.exp.parser.ASTObjPath.evaluateNode(ASTObjPath.java:58)
at org.apache.cayenne.exp.parser.SimpleNode.evaluate(SimpleNode.java:335)
at org.apache.cayenne.exp.parser.SimpleNode.evaluateChild(SimpleNode.java:323)
at org.apache.cayenne.exp.parser.ASTEqual.evaluateNode(ASTEqual.java:66)
at org.apache.cayenne.exp.parser.SimpleNode.evaluate(SimpleNode.java:335)
at org.apache.cayenne.exp.Expression.match(Expression.java:367)
at org.apache.cayenne.exp.Expression.filter(Expression.java:389)
at org.apache.cayenne.exp.Expression.filterObjects(Expression.java:378)

I had to locally unroll the following SVN revs to clear the problem: 998620, 1001040, 1001041

Sub-Tasks

• Undo CAY-1213: Closed
• Cayenne should support enum types in qualifier statements/expression handling: Closed