public void DeleteTable(string name)
{
var tableTree = ReadTree(name, RootObjectType.Table);
var writtenSchemaData = tableTree.DirectRead(TableSchema.SchemasSlice);
var writtenSchemaDataSize = tableTree.GetDataSize(TableSchema.SchemasSlice);
var schema = TableSchema.ReadFrom(Allocator, writtenSchemaData, writtenSchemaDataSize);
var table = OpenTable(schema, name);
// delete table data
table.DeleteByPrimaryKey(Slices.BeforeAllKeys, x =>
{
if (schema.Key.IsGlobal)
{
return(table.IsOwned(x.Reader.Id));
}
return(true);
});
if (schema.Key.IsGlobal == false)
{
var pkTree = table.GetTree(schema.Key);
DeleteTree(pkTree, isInRoot: false);
tableTree.Delete(pkTree.Name);
}
// index trees should be already removed but just in case let's go over them and ensure they're really deleted
foreach (var indexDef in schema.Indexes.Values)
{
if (indexDef.IsGlobal) // must not delete global indexes
{
continue;
}
if (tableTree.Read(indexDef.Name) == null)
{
continue;
}
var indexTree = table.GetTree(indexDef);
DeleteTree(indexTree, isInRoot: false);
tableTree.Delete(indexTree.Name);
}
foreach (var indexDef in schema.FixedSizeIndexes.Values)
{
if (indexDef.IsGlobal) // must not delete global indexes
{
continue;
}
if (tableTree.Read(indexDef.Name) == null)
{
continue;
}
var index = table.GetFixedSizeTree(indexDef);
DeleteFixedTree(index, isInRoot: false);
tableTree.Delete(index.Name);
}
// raw data sections
table.ActiveDataSmallSection.FreeRawDataSectionPages();
if (tableTree.Read(TableSchema.ActiveCandidateSectionSlice) != null)
{
using (var it = table.ActiveCandidateSection.Iterate())
{
if (it.Seek(long.MinValue))
{
var sectionPageNumber = it.CurrentKey;
var section = new ActiveRawDataSmallSection(this, sectionPageNumber);
section.FreeRawDataSectionPages();
}
}
DeleteFixedTree(table.ActiveCandidateSection, isInRoot: false);
}
if (tableTree.Read(TableSchema.InactiveSectionSlice) != null)
{
DeleteFixedTree(table.InactiveSections, isInRoot: false);
}
DeleteTree(name);
using (Slice.From(Allocator, name, ByteStringType.Immutable, out var nameSlice))
{
_tables.Remove(nameSlice);
}
}