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https://issues.apache.org/jira/browse/LUCENENET-602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16902555#comment-16902555
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Axel Borge commented on LUCENENET-602:
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I must admit, I only did a quick and dirty hack to verify that the problem was
in the LurchTable implementation. I have not carefully chosen an alternative,
and I'm surly not technically competent to properly compare the different
implementations out there, against the features needed in this project.
With your knowledge of the necessary features, I has hoping you could find a
propper alternative, that hopefully could support the correct frameworks. There
seems to be a few candidates according to Google: [lrucache
c#|https://www.google.com/search?client=safari&rls=en&ei=5mZLXaeJCuGErwSI-pf4AQ&q=lrucache+c%23&oq=lrucache+c%23&gs_l=psy-ab.3..0i203j0i22i30j0i8i13i30l3j0i13i5i30.21758.24036..24957...0.0..0.66.376.6......0....1..gws-wiz.......35i39j0i22i10i30j0i22i30i19j0i13i30i19j0i13j0i13i30j0i13i10i30.k5ImsuUmSJk&ved=&uact=5]
If you find one you think looks OK, I'm happy to try it on a few physical IOS
gadgets.
And, no. I haven't verified that all of the Facet tests pass...
> 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
> Priority: Blocker
> Labels: AOT, Xamarin.iOS, lucene.net.facet
> Fix For: Lucene.Net 4.8.0
>
> Attachments: AppTestLucene.zip
>
> Original Estimate: 120h
> Remaining Estimate: 120h
>
> 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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