public void TestStructuresOfArrays()
{
var randomGenerator = new RandomGenerator(66707770); // make this deterministic.
var index = new MemoryMappedIndex <int[]>(new MemoryMappedStream(new MemoryStream()),
MemoryMappedDelegates.ReadFromIntArray, MemoryMappedDelegates.WriteToIntArray);
var indexRef = new Dictionary <long, int[]>();
// add the data.
var testCount = 10;
while (testCount > 0)
{
var data = randomGenerator.GenerateArray(512, 512);
indexRef.Add(index.Add(data), data);
testCount--;
}
// get the data and check.
foreach (var entry in indexRef)
{
var data = index.Get(entry.Key);
Assert.AreEqual(indexRef[entry.Key], data);
}
}
public void TestStringHuge()
{
var randomGenerator = new RandomGenerator(66707770); // make this deterministic.
var index = new MemoryMappedIndex <string>(new MemoryMappedStream(new MemoryStream()),
MemoryMappedDelegates.ReadFromString, MemoryMappedDelegates.WriteToString, 1024, false);
var indexRef = new Dictionary <long, string>();
// add the data.
var testCount = 1000;
while (testCount > 0)
{
var data = randomGenerator.GenerateString(
randomGenerator.Generate(256) + 32);
indexRef.Add(index.Add(data), data);
testCount--;
}
// get the data and check.
foreach (var entry in indexRef)
{
var data = index.Get(entry.Key);
Assert.AreEqual(indexRef[entry.Key], data);
}
}
public void TestString()
{
var randomGenerator = new RandomGenerator(66707770); // make this deterministic.
var index = new MemoryMappedIndex<string>(new MemoryMappedStream(new MemoryStream()),
MemoryMappedDelegates.ReadFromString, MemoryMappedDelegates.WriteToString);
var indexRef = new Dictionary<long, string>();
// add the data.
var testCount = 10;
while(testCount > 0)
{
var data = randomGenerator.GenerateString(
randomGenerator.Generate(256) + 32);
indexRef.Add(index.Add(data), data);
testCount--;
}
// get the data and check.
foreach(var entry in indexRef)
{
var data = index.Get(entry.Key);
Assert.AreEqual(indexRef[entry.Key], data);
}
}
/// <summary>
/// Gets the value associated with the specified key.
/// </summary>
/// <param name="key"></param>
/// <param name="value"></param>
/// <returns></returns>
public bool TryGetValue(TKey key, out TValue value)
{
long keyId, valueId, pairId;
var hash = this.Hash(key);
if (this.Get(hash, key, out keyId, out valueId, out pairId))
{ // key was found.
value = _values.Get(valueId).Value;
return(true);
}
value = default(TValue);
return(false);
}
/// <summary>
/// Sets to
/// </summary>
/// <param name="hash"></param>
/// <param name="key"></param>
/// <param name="value"></param>
private void Set(long hash, TKey key, TValue value)
{
// try an find the key.
var pairId = _hashes[hash];
while (pairId >= 0)
{
var keyId = _pairs[pairId];
var currentKey = _keys.Get(keyId).Key;
if ((_compareKey == null && currentKey.Equals(key)) ||
(_compareKey != null && _compareKey(currentKey, key) == 0))
{ // key was found.
_pairs[pairId + 1] = _values.Add(new ValueStruct()
{
Value = value
});
return;
}
pairId = _pairs[pairId + 2];
}
this.Add(hash, key, value);
}
public void TestStructuresOfArraysSerialize()
{
var randomGenerator = new RandomGenerator(66707770); // make this deterministic.
var index = new MemoryMappedIndex<int[]>(new MemoryMappedStream(new MemoryStream()),
MemoryMappedDelegates.ReadFromIntArray, MemoryMappedDelegates.WriteToIntArray);
var indexRef = new Dictionary<long, int[]>();
// add the data.
var testCount = 10;
while (testCount > 0)
{
var data = randomGenerator.GenerateArray(512, 512);
indexRef.Add(index.Add(data), data);
testCount--;
}
MemoryMappedIndex<int[]> deserializedIndex;
using (var stream = new MemoryStream())
{
var size = index.Serialize(stream);
deserializedIndex = MemoryMappedIndex<int[]>.Deserialize(stream,
MemoryMappedDelegates.ReadFromIntArray, MemoryMappedDelegates.WriteToIntArray, false);
// get the data and check.
foreach (var entry in indexRef)
{
var data = index.Get(entry.Key);
Assert.AreEqual(indexRef[entry.Key], data);
}
}
}