Hi John,
> Am 17.07.2017 um 16:08 schrieb John Huss <[email protected]>:
>
> Expressions will work with non-modeled properties as long as the methods
> look like getters - have the "get" prefix and no arguments.
Unfortunately not:
Caused by: java.lang.IllegalArgumentException: Property
'getCustomerNameForSorting' is not readable
at org.apache.cayenne.reflect.BeanAccessor.<init>(BeanAccessor.java:92)
at
org.apache.cayenne.reflect.PropertyUtils.createSegmentAccessor(PropertyUtils.java:115)
at
org.apache.cayenne.reflect.PropertyUtils.getOrCreateSegmentAccessor(PropertyUtils.java:102)
at
org.apache.cayenne.reflect.PropertyUtils$PathAccessor.getValue(PropertyUtils.java:232)
at
org.apache.cayenne.reflect.PropertyUtils.getProperty(PropertyUtils.java:124)
at
org.apache.cayenne.CayenneDataObject.readSimpleProperty(CayenneDataObject.java:161)
at
org.apache.cayenne.CayenneDataObject.readNestedProperty(CayenneDataObject.java:127)
at
org.apache.cayenne.CayenneDataObject.readNestedProperty(CayenneDataObject.java:147)
at
org.apache.cayenne.exp.parser.ASTObjPath.evaluateNode(ASTObjPath.java:60)
at
org.apache.cayenne.exp.parser.SimpleNode.evaluate(SimpleNode.java:417)
Signature is: public String getCustomerNameForSorting()
> But I would use this:
>
> Collections.sort(list, (a,b) -> a.getSomeProp().compareTo(b.getSomeProp()));
Thought of that, but it would require me to re-implement the path segment
tokenization and everything.
Maik
> On Mon, Jul 17, 2017 at 8:08 AM Musall, Maik <[email protected]> wrote:
>
>> Hi all,
>>
>> I have a UI with a list of objects and user-configurable filters and
>> sorting criteria. Most of the sorting criteria are plain db path
>> expressions, so I can just feed them into Ordering.orderedList(objects).
>>
>> A couple of them however are path expressions with the last segment being
>> not a Property, but a method name that is supposed to be invoked, which
>> would then return a String, after which the list is to be ordered. This
>> worked fine in the past using EOF and EOSortOrdering, but Cayenne's
>> ordering throws an ExpressionException on evaluate().
>>
>> What is the usual way in Cayenne to deal with this?
>>
>> Thanks
>> Maik
>>
>>
