public int BlocksAccessed()
{
var recordsPerBlock = _blockSize / _tableInfo.RecordLength;
int blocksCount = _statInfo.RecordsOutput / recordsPerBlock;
return(BTreeIndex.SearchCost(blocksCount, recordsPerBlock));
}
public void CanCreateBTreeIndex()
{
Assert.DoesNotThrow(() =>
{
index = new BTreeIndex("id", schema, transaction);
});
}
public void CanWriteAndRestoreFromBinary()
{
var index = new BTreeIndex <string, bool, bool>(10);
foreach (var s in strings)
{
index.EnsureValue(s);
}
using (var stream = new MemoryStream()){
using (var sw = new BinaryWriter(stream, Encoding.UTF8, true)){
index.Write(sw);
sw.Flush();
}
index = new BTreeIndex <string, bool, bool>(10);
stream.Position = 0;
using (var sr = new BinaryReader(stream, Encoding.UTF8, true))
{
index.Read(sr);
}
};
foreach (var s in strings)
{
Assert.NotNull(index.Find(s));
}
}
public void CanStore()
{
var index = new BTreeIndex <string, bool, bool>(10);
foreach (var s in strings)
{
index.EnsureValue(s);
}
Console.WriteLine(index.PlainIndex.Count);
}
public void CanCountSearchCost()
{
var res = 0;
Assert.DoesNotThrow(() =>
{
var res = BTreeIndex.SearchCost(0, 0);
});
Assert.AreEqual(0, res);
}
public void CanRead()
{
var index = new BTreeIndex <string, bool, bool>(10);
foreach (var s in strings)
{
index.EnsureValue(s);
}
foreach (var s in strings)
{
Assert.NotNull(index.Find(s));
}
}
///-------------------------------------------------------------------------------------------------
/// <summary>
/// Constructor.
/// </summary>
/// <param name="graph">
/// The graph.
/// </param>
/// <param name="name">
/// The name.
/// </param>
/// <param name="metaClass">
/// The meta class.
/// </param>
/// <param name="unique">
/// true to unique.
/// </param>
/// <param name="propertyNames">
/// A list of names of the properties.
/// </param>
///-------------------------------------------------------------------------------------------------
public IndexDefinition(IHyperGraph graph, string name, ISchemaElement metaClass, bool unique, params string[] propertyNames)
{
DebugContract.Requires(graph);
DebugContract.RequiresNotEmpty(name);
DebugContract.Requires(metaClass);
if (propertyNames.Length > 0)
{
PropertyNames = new string[propertyNames.Length];
for (var i = 0; i < propertyNames.Length; i++)
{
PropertyNames[i] = propertyNames[i];
}
}
MetaClass = metaClass;
Index = new BTreeIndex(graph, name, unique);
}
private void Write(BTreeIndex <string, bool, bool> index)
{
Console.WriteLine();
foreach (var b in index.PlainIndex.Values)
{
Console.WriteLine(b.Id);
foreach (var value in b.Values)
{
Console.Write(value.ToString());
}
Console.WriteLine();
Console.WriteLine("------------------------------------------");
}
Console.WriteLine("===================================================");
}