private IEnumerable <StoredPartialIndexFilterInfo> GetPartialIndexes()
{
if (!services.ProviderInfo.Supports(ProviderFeatures.PartialIndexes))
{
return(Enumerable.Empty <StoredPartialIndexFilterInfo>());
}
var metadata = context.Metadata;
if (metadata == null)
{
return(Enumerable.Empty <StoredPartialIndexFilterInfo>());
}
var extensions = metadata.Extensions.Where(e => e.Name == WellKnown.PartialIndexDefinitionsExtensionName);
var result = new List <StoredPartialIndexFilterInfo>();
foreach (var extension in extensions)
{
var items = StoredPartialIndexFilterInfoCollection.Deserialize(extension.Value).Items;
if (items != null)
{
result.AddRange(items);
}
}
return(result);
}
private ExtensionMetadata GetPartialIndexes(Domain domain, IEnumerable <TypeInfo> types)
{
if (!domain.StorageProviderInfo.Supports(ProviderFeatures.PartialIndexes))
{
return(null);
}
var compiler = UpgradeContext.Services.IndexFilterCompiler;
var handlers = domain.Handlers;
var indexes = types
.SelectMany(type => type.Indexes
.Where(i => i.IsPartial && !i.IsVirtual && !i.IsAbstract)
.Select(i => new { Type = type, Index = i }))
.Select(item => new StoredPartialIndexFilterInfo {
Database = item.Type.MappingDatabase,
Schema = item.Type.MappingSchema,
Table = item.Type.MappingName,
Name = item.Index.MappingName,
Filter = compiler.Compile(handlers, item.Index)
})
.ToArray();
if (indexes.Length == 0)
{
return(null);
}
var items = new StoredPartialIndexFilterInfoCollection {
Items = indexes
};
return(new ExtensionMetadata(WellKnown.PartialIndexDefinitionsExtensionName, items.Serialize()));
}
