I can reproduce this locally, and offhand looks like a scala compiler bug (this
should never have compiled).
I have to run right now, but I'll look at in ~2-4 hours and hopefully figure it
out for you.
-Ross
On Mar 4, 2010, at 1:28 PM, Craig Blake wrote:
> To test further, I've created a simple test project with only one dependency,
> lift-couchdb, and this code:
>
> object Settings extends Settings with CouchMetaRecord[ Settings]
> class Settings extends CouchRecord[ Settings] {
> def meta = Settings
> object updated extends JSONDateTimeField( this)
> }
>
> object Testing {
>
> def main( args: Array[ String]) {
> import CouchDB.defaultDatabase
> defaultDatabase = new Database( :/( "localhost", 5984) as_! (
> "username", "password"), "database")
>
> val settings = Settings.createRecord
> settings.updated( Calendar.getInstance( TimeZone.getTimeZone(
> "UTC")))
> settings.save
> }
> }
>
> I get the same error:
>
> java.lang.AbstractMethodError:
> test.Settings$updated$.encode(Ljava/lang/Object;)Ljava/lang/String;
>
> I've also put the test code in Github in case anyone might be able to
> reproduce it locally:
>
> [email protected]:craigwblake/lift-couchdb-test.git
>
>
> Thanks,
> Craig
>
>
> On Mar 3, 2010, at 9:54 PM, Naftoli Gugenheim wrote:
>
>> AbstractMethodError means you need to do a clean build and make sure you
>> don't have multiple scala versions.
>>
>> -------------------------------------
>> Craig Blake<[email protected]> wrote:
>>
>> Just took a minor change to compile (didn't like ?~) and I'll let you know
>> how it goes soon. I'm running into one more problem, this time a runtime
>> exception saving a document:
>>
>> java.lang.AbstractMethodError:
>> test.Settings$updated$.encode(Ljava/lang/Object;)Ljava/lang/String;
>> at
>> net.liftweb.couchdb.JSONEncodedStringFieldMixin$$anonfun$asJValue$6.apply(JSONRecord.scala:319)
>> at
>> net.liftweb.couchdb.JSONEncodedStringFieldMixin$$anonfun$asJValue$6.apply(JSONRecord.scala:319)
>> at net.liftweb.common.Full.map(Box.scala:330)
>> at net.liftweb.couchd...
>>
>>
>> The field is defined as:
>>
>> object updated extends JSONDateTimeField( this)
>>
>> Surely something else I missed?
>>
>> Craig
>>
>> On Mar 3, 2010, at 8:39 PM, Ross Mellgren wrote:
>>
>>> Try this:
>>>
>>> /** Enum data field for JSON records. Encodes as JString */
>>> class JSONEnumNameField[OwnerType <: JSONRecord[OwnerType], EnumType <:
>>> Enumeration]
>>> (rec: OwnerType, enum: EnumType)(implicit
>>> enumValueType: Manifest[EnumType#Value])
>>> extends EnumField[OwnerType, EnumType](rec, enum) with JSONField
>>> {
>>> def this(rec: OwnerType, enum: EnumType, value: EnumType#Value)(implicit
>>> enumValueType: Manifest[EnumType#Value]) = {
>>> this(rec, enum)
>>> set(value)
>>> }
>>>
>>> def this(rec: OwnerType, enum: EnumType, value:
>>> Box[EnumType#Value])(implicit enumValueType: Manifest[EnumType#Value]) = {
>>> this(rec, enum)
>>> setBox(value)
>>> }
>>>
>>> def asJValue: JValue = valueBox.map(v => JString(v.toString)) openOr
>>> (JNothing: JValue)
>>> def fromJValue(jvalue: JValue): Box[EnumType#Value] = jvalue match {
>>> case JNothing|JNull if optional_? => setBox(Empty)
>>> case JString(s) => setBox(enum.valueOf(s) ?~ ("Unknown
>>> value \"" + s + "\""))
>>> case other => setBox(expectedA("JString", other))
>>> }
>>> }
>>>
>>> Let me know if it works for you. If so, I'll start the process of getting
>>> it into master as soon as I can.
>>>
>>> -Ross
>>>
>>> On Mar 3, 2010, at 8:12 PM, Craig Blake wrote:
>>>
>>>> Sure, will do. The only thing I think I'll need to figure out is how to
>>>> persist an enumeration by name rather than ordinal value, but I imagine
>>>> that it should be pretty straight-forward to add a new field type in my
>>>> app to handle it.
>>>>
>>>> Thanks,
>>>> Craig
>>>>
>>>> On Mar 3, 2010, at 7:45 PM, Ross Mellgren wrote:
>>>>
>>>>> It's no problem, as I mentioned the compiler error is practically useless.
>>>>>
>>>>> Hope you get along well, let me know if you have any other issues.
>>>>>
>>>>> -Ross
>>>>>
>>>>> On Mar 3, 2010, at 7:29 PM, Craig Blake wrote:
>>>>>
>>>>>> Yep, that seems to be better. Sorry for the noise, I don't know why I
>>>>>> didn't think to check that.
>>>>>>
>>>>>> Thanks for the quick answer.
>>>>>>
>>>>>> Craig
>>>>>>
>>>>>> On Mar 3, 2010, at 4:44 PM, Ross Mellgren wrote:
>>>>>>
>>>>>>> Unfortunately the compiler error is bizarre (due to some of the type
>>>>>>> shuffling involved), but the underlying problem you're experiencing is
>>>>>>> that DateTimeFields (and therefore JSONDateTimeFields) have a storage
>>>>>>> type of Calendar, and you're trying to assign a Date to them. Try
>>>>>>> Calendar.getInstance instead of new Date() and see if that resolves it
>>>>>>> for you?
>>>>>>>
>>>>>>> -Ross
>>>>>>>
>>>>>>> On Mar 3, 2010, at 4:32 PM, Craig Blake wrote:
>>>>>>>
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> I am getting familiar with the lift-couchdb module, and trying to put
>>>>>>>> together a sample based on the tests in the module. Trying to create
>>>>>>>> a record, based on this test code:
>>>>>>>>
>>>>>>>> def testRec1: Person = Person.createRecord.name("Alice").age(25)
>>>>>>>>
>>>>>>>> this is what I have:
>>>>>>>>
>>>>>>>> class Account extends CouchRecord[Account] {
>>>>>>>> def meta = Account
>>>>>>>> object created extends JSONDateTimeField(this)
>>>>>>>> }
>>>>>>>> object Account extends Account with CouchMetaRecord[Account]
>>>>>>>>
>>>>>>>> ...
>>>>>>>>
>>>>>>>> val account = Account.createRecord.created(new Date())
>>>>>>>>
>>>>>>>>
>>>>>>>> I get a compilation error:
>>>>>>>>
>>>>>>>> [WARNING] Test.scala:44: error: overloaded method value apply with
>>>>>>>> alternatives ((net.liftweb.common.Box[_12.MyType])test.Account)
>>>>>>>> forSome { val _12: object test.Account#created } <and>
>>>>>>>> ((_13.MyType)test.Account) forSome { val _13: object
>>>>>>>> test.Account#created } cannot be applied to (java.util.Date)
>>>>>>>> [WARNING] val account = Account.createRecord.created( new
>>>>>>>> Date())
>>>>>>>>
>>>>>>>>
>>>>>>>> I'm sure that I am just missing something obvious. Any ideas what?
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>> Craig
>>>>>>>>
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