Enrico Caltran created LUCENENET-602:
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Summary: Error using Lucene.Net.Facet 4.8.0-beta00005 with
Xamarin.iOS
Key: LUCENENET-602
URL: https://issues.apache.org/jira/browse/LUCENENET-602
Project: Lucene.Net
Issue Type: Bug
Components: Lucene.Net.Facet
Affects Versions: Lucene.Net 4.8.0
Environment: Xamarin Forms 3.0.0.561731
Ios 10.3.3 and Higher
Lucene.Net.Facet 4.8.0-beta00005
Reporter: Enrico Caltran
Fix For: Lucene.Net 4.8.0
I'm using Lucene.Net.Facet 4.8.0-beta00005 in a big Xamarin project.
+With Xamarin.Android and Xamarin.UWP it's all right.+
*+But With Xamarin.iOS on device (Ipad)+*, i'm receiving this error:
_Attempting to JIT compile method
'Lucene.Net.Support.LurchTable2<Lucene.Net.Facet.Taxonomy.FacetLabel,
Lucene.Net.Facet.Taxonomy.Directory.DirectoryTaxonomyReader/Int32Class>:InternalInsert<Lucene.Net.Support.LurchTable2/Add2Info<Lucene.Net.Facet.Taxonomy.FacetLabel,
Lucene.Net.Facet.Taxonomy.Directory.DirectoryTaxonomyReader/Int32Class>>
(int,Lucene.Net.Facet.Taxonomy.FacetLabel,int&,Lucene.Net.Support.LurchTable`2/Add2Info<Lucene.Net.Facet.Taxonomy.FacetLabel,
Lucene.Net.Facet.Taxonomy.Directory.DirectoryTaxonomyReader/Int32Class>&)'
while running in aot-only mode. See
[https://developer.xamarin.com/guides/ios/advanced_topics/limitations/] for
more information._
_{color:#d04437}at Lucene.Net.Support.LurchTable2[TKey,TValue].Insert[T] (TKey
key, T& value) <0x2570f48 + 0x000e0> in
<063e095c95d945a4ace32ab83d1227eb#2ae0fea9ea4eacaef83bf2e9713bb8ea>:0 at
(wrapper unknown) System.Object.gsharedvt_in() at
Lucene.Net.Support.LurchTable2[TKey,TValue].AddOrUpdate (TKey key, TValue
addValue, Lucene.Net.Support.KeyValueUpdate2[TKey,TValue] fnUpdate)
<0x232824c + 0x0013b> in
<063e095c95d945a4ace32ab83d1227eb#2ae0fea9ea4eacaef83bf2e9713bb8ea>:0 at
Lucene.Net.Facet.Taxonomy.LRUHashMap2[TKey,TValue].Put (TKey key, TValue value)
<0x2c487f8 + 0x0015b> in
<79d3a7b905954d0993025c09c5d087ce#2ae0fea9ea4eacaef83bf2e9713bb8ea>:0 at
Lucene.Net.Facet.Taxonomy.Directory.DirectoryTaxonomyReader.GetOrdinal
(Lucene.Net.Facet.Taxonomy.FacetLabel cp) <0x2c51970 + 0x0019b> in
<79d3a7b905954d0993025c09c5d087ce#2ae0fea9ea4eacaef83bf2e9713bb8ea>:0 at
Lucene.Net.Facet.Taxonomy.Int32TaxonomyFacets.GetTopChildren{color}
(System.Int32 topN, System.String dim, System.String[] path) <0x2c481dc +
0x0008f> in
<79d3a7b905954d0993025c09c5d087ce#2ae0fea9ea4eacaef83bf2e9713bb8ea>:0 at
Login.MyMB.Lucene.Client.LuceneArticoliSearcher.GetListaArticoloXRicercaAvanzataConRicercaSemplice
(System.Collections.Generic.List1[T] listParametri) <0x224add0 +
0x001bb> in
<8f49891e0f0546e185aba7424d294ef7#2ae0fea9ea4eacaef83bf2e9713bb8ea>:0 at
Login.MyMB.Lucene.Client.LuceneArticoliSearcher.GetListaArticoloConRicercaSemplice
(System.Collections.Generic.List1[T] listParametri) <0x224afbc + 0x0009f> in
<8f49891e0f0546e185aba7424d294ef7#2ae0fea9ea4eacaef83bf2e9713bb8ea>:0 at
MyMB.Forms.RicercaLucene.RicercaArticoloLucene.GetListaArticoliXRicercaSemplice
(Login.MyMB.Interface.IAmbiente ambiente,
Login.MyMB.Lucene.Client.LuceneArticoliSearcher las,
System.Collections.Generic.List`1[T] ListParametri, System.Boolean
isAbilitataRicercaBarcode) <0xe47fc0 + 0x000e7> in
<f1bb3149abe145459612794f1a096634#2ae0fea9ea4eacaef83bf2e9713bb8ea>:0
..............................._
At the link
[https://docs.microsoft.com/it-it/xamarin/ios/internals/limitations] , I found
the problem cause (I suppose...):
_Value types as Dictionary Keys Using a value type as a Dictionary<TKey,
TValue> key is problematic, as the default Dictionary constructor attempts to
use EqualityComparer<TKey>.Default. EqualityComparer<TKey>.Default, in turn,
attempts to use Reflection to instantiate a new type which implements the
IEqualityComparer<TKey> interface. This works for reference types (as the
reflection+create a new type step is skipped), but for value types it crashes
and burns rather quickly once you attempt to use it on the device. Workaround:
Manually implement the IEqualityComparer<TKey> interface in a new type and
provide an instance of that type to the Dictionary<TKey, TValue>
(IEqualityComparer<TKey>) constructor._
So, what can I do? Thank you in advance, Enrico Caltran +393357485560
[enrico.calt...@timegroup.it|mailto:enrico.calt...@timegroup.it]
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