Chuck,
On 15. 2. 2015, at 1:48, Chuck Hill <[email protected]> wrote:
> ===
> private static Map _lastValidPOCacheGID=[:]
> public DBPriceOffer lastValidPriceOffer { // this might happen in any EC,
> default or temporary
> if (_lastValidPOCacheGID[this.permanentGlobalID()]) {
> def gid=_lastValidPOCacheGID[this.permanentGlobalID()]
> def lvpo=this.editingContext().objectForGlobalID(gid) //1 finds
> it if exists in EC, or...
>
> Don’t do it like this. Use ec.faultForGlobalD(). This handles the three
> cases:
That was the first thing I tried, but with faultForGlobalD(), I
(a) get a fault instead of the object itself -- this is self-evidently wrong,
for the object has been added into the EC short time ago, and the documentation
says “If the object associated with globalID is already registered in this
EOEditingContext ... this method returns that object”
(b) as probably a direct result of (a), I keep getting
databaseContextFailedToFetchObject delegate calls when the fault is fired. If I
don't do anything and return false from the delegate method, I then get the
right object, but I feel something is wrong whenever
databaseContextFailedToFetchObject comes -- or is it the normal processing here?
If so, how do I distinguish in my delegate method that „this is OK“ from the
cases where there's something really amiss?
When using e.g., this code:
=== if I use this code ===
def gid=DBAuction._lastValidPOCacheGID[this.permanentGlobalID()]
println "???? about to get $gid of $this
/EC:${this.editingContext().hashCode()}"
def
lvpo=this.editingContext().faultForGlobalID(gid,this.editingContext())
println "???? got ${lvpo.hashCode()} isfault: ${lvpo.isFault()}"
println "???? -> $lvpo"
===
and, just to repeat for reference,
===
DBPriceOffer npo=new DBPriceOffer()
this.editingContext.insertObject(npo)
println "???? setting new valid PO of ${this.permanentGlobalID()}: $npo ->
${npo.permanentGlobalID()} IN.this ${this.editingContext.hashCode()} IN.po
${npo.editingContext.hashCode()}"
===
along with
===
boolean databaseContextFailedToFetchObject(EODatabaseContext ctxt, Object
object, EOGlobalID gid) {
println "SPC: failed-to-fetch $gid ($object / ${object.getClass()}),
missing ${ctxt.missingObjectGlobalIDs()}"
false
}
===
for new price order I get this result:
===
???? setting new valid PO of _EOIntegralKeyGlobalID[DBAuction
(java.lang.Integer)1000015]: <DBPriceOffer@351793642 PK:null N /EC:1655327563>
-> _EOIntegralKeyGlobalID[DBPriceOffer (java.lang.Integer)1000275] IN.this
1655327563 IN.po 1655327563
...
???? about to get _EOIntegralKeyGlobalID[DBPriceOffer
(java.lang.Integer)1000275] of <DBAuction@422562876 PK:1000015 E:2 Title:'blah'
/EC:1655327563> /EC:1655327563
???? got 1165696376 isfault: true
08:18:48.470 DEBUG === Begin Internal Transaction
08:18:48.470 DEBUG evaluateExpression:
<com.webobjects.jdbcadaptor.FrontbasePlugIn$FrontbaseExpression: "SELECT
t0."C_AMOUNT", t0."C_AUCTION_ID", t0."C_COMM_PARTNER_ID", t0."C_CREATION_DATE",
t0."C_CREATOR_ID", t0."C_PRICE", t0."C_PT_ID", t0."C_SHEET_CONFIRMED",
t0."C_UID", t0."C_VALID_OFFER" FROM "T_PRICE_OFFER" t0 WHERE t0."C_UID" =
1000275" withBindings: >
08:18:48.471 DEBUG 0 row(s) processed
08:18:48.473 DEBUG === Commit Internal Transaction
SPC: failed-to-fetch _EOIntegralKeyGlobalID[DBPriceOffer
(java.lang.Integer)1000275] (<DBPriceOffer@1165696376 PK:1000275
/EC:1655327563> / class model.DBPriceOffer), missing []
???? -> <DBPriceOffer@1165696376 PK:1000275 /EC:1655327563>
===
> ???? setting new valid PO of [DBAuction.1000015]: <DBPriceOffer@34841915
> PK:null N /EC:73728309> -> [DBPriceOffer.1000206] IN.this 73728309 IN.po
> 73728309
>
> Why does it say PK:null? If a permanent GID has been assigned, should be PK
> not have a value? And it is null, then null is getting cached here
> _lastValidPOCacheGID[this.permanentGlobalID()]=npo.permanentGlobalID()
> Which I think explains why it is neither found in the EC or fetched?
Well search me. Perhaps this is the gist of the problem? I thought it is normal
for the PK to be null until saved to DB; anyway, if I fall back from
faultForGlobalID to my hack[*], then this code:
===
println "po PK:${po.primaryKeyNumericValue()} / WPK:${po.primaryKey()}"
println "po perm: ${po.permanentGlobalID()}"
println "po PK:${po.primaryKeyNumericValue()} / WPK:${po.primaryKey()}"
println "???? setting found last valid PO of ${this.permanentGlobalID()}: $po
-> ${po.permanentGlobalID()} IN ${po.editingContext.hashCode()}"
===
logs out these results:
===
???? setting new valid PO of _EOIntegralKeyGlobalID[DBAuction
(java.lang.Integer)1000015]: <DBPriceOffer@522270846 PK:null N /EC:813009222>
-> _EOIntegralKeyGlobalID[DBPriceOffer (java.lang.Integer)1000277] IN.this
813009222 IN.po 813009222
08:51:26.236 DEBUG === Begin Internal Transaction //log:NSLog
[WorkerThread0]
08:51:26.236 DEBUG evaluateExpression:
<com.webobjects.jdbcadaptor.FrontbasePlugIn$FrontbaseExpression: "SELECT
t0."C_AMOUNT", t0."C_AUCTION_ID", t0."C_COMM_PARTNER_ID", t0."C_CREATION_DATE",
t0."C_CREATOR_ID", t0."C_PRICE", t0."C_PT_ID", t0."C_SHEET_CONFIRMED",
t0."C_UID", t0."C_VALID_OFFER" FROM "T_PRICE_OFFER" t0 WHERE t0."C_UID" =
1000277" withBindings: > //log:NSLog [WorkerThread0]
08:51:26.245 DEBUG 0 row(s) processed //log:NSLog [WorkerThread0]
08:51:26.443 DEBUG === Commit Internal Transaction //log:NSLog
[WorkerThread0]
???? fetched valid PO of _EOIntegralKeyGlobalID[DBAuction
(java.lang.Integer)1000015]: _EOIntegralKeyGlobalID[DBPriceOffer
(java.lang.Integer)1000277] -> null IN 813009222
po PK:-2 / WPK:null
po perm: _EOIntegralKeyGlobalID[DBPriceOffer (java.lang.Integer)1000277]
po PK:-2 / WPK:null
???? setting found last valid PO of _EOIntegralKeyGlobalID[DBAuction
(java.lang.Integer)1000015]: <DBPriceOffer@522270846 PK:null N /EC:813009222>
-> _EOIntegralKeyGlobalID[DBPriceOffer (java.lang.Integer)1000277] IN 813009222
===
where PK/primaryKeyNumericValue is my ancient pre-Wonder primary key code,
which I have re-surrected for reference:
===
int primaryKeyNumericValue {
EOEditingContext ec=editingContext();
if (ec==nil) return -1; // not yet inserted
EOGlobalID gid=ec.globalIDForObject(this);
if (gid==nil || gid.isTemporary()) return -2; // not yet assigned
NSArray kvs=((EOKeyGlobalID)gid).keyValuesArray();
if (kvs==nil || kvs.count()!=1) return -3; // not single PK, never
happens in my model
Object k=kvs.objectAtIndex(0);
if (!(k instanceof Integer)) return -3; // not integer PK, never
happens in my model
return ((Integer)k).intValue();
}
===
Thanks for any isight,
OC
[*] the hack:
===
def lvpo=this.editingContext().objectForGlobalID(gid) // finds it
if exists in EC, or...
if (!lvpo) {
lvpo=ERXEOGlobalIDUtilities.fetchObjectWithGlobalID(this.editingContext(),gid)
// ... fetches if does not
println "???? fetched valid PO of ${this.permanentGlobalID()}:
${gid} -> ${lvpo} IN ${this.editingContext.hashCode()}"
} else println "???? found valid PO of ${this.permanentGlobalID()}:
${gid} -> ${lvpo} IN ${this.editingContext.hashCode()}".toString()
===
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