Java Doc for ArraySuffix.java in  » Workflow-Engines » jbpm-jpdl-3.2.2 » org » jbpm » jpdl » el » impl » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Represents an operator that obtains a Map entry, an indexed value, a property value, or an indexed property value of an object. The following are the rules for evaluating this operator:

 Evaluating a[b] (assuming a.b == a["b"])
 a is null
 return null
 b is null
 return null
 a is Map
 !a.containsKey (b)
 return null
 a.get(b) == null
 return null
 otherwise
 return a.get(b)
 a is List or array
 coerce b to int (using coercion rules)
 coercion couldn't be performed
 error
 a.get(b) or Array.get(a, b) throws ArrayIndexOutOfBoundsException or IndexOutOfBoundsException
 return null
 a.get(b) or Array.get(a, b) throws other exception
 error
 return a.get(b) or Array.get(a, b)
 coerce b to String
 b is a readable property of a
 getter throws an exception
 error
 otherwise
 return result of getter call
 otherwise
 error