/// <summary>
/// Get the shard id corresponding to an indexKey
/// </summary>
/// <param name="aIndexKey">An IndexKey</param>
/// <returns>The shard id</returns>
private int GetIndexShardID(IndexKey aIndexKey)
{
//stupid... might be solved by constant hashing or sth like that
return Math.Abs(aIndexKey.GetHashCode()) % AttributeIdxShards;
}
/// <summary>
/// Get the shard id corresponding to an indexKey
/// </summary>
/// <param name="aIndexKey">An IndexKey</param>
/// <returns>The shard id</returns>
public int GetIndexShardID(IndexKey aIndexKey, UInt16 shardCount)
{
//stupid... might be solved by constant hashing or sth like that
return Math.Abs(aIndexKey.GetHashCode()) % shardCount;
}
/// <summary>
/// Instantiates a new IndexKey on the base of another one. Additionally a AADBBaseObject is added.
/// </summary>
/// <param name="myStartingIndexKey">The base of the new IndexKey</param>
/// <param name="myAttributeUUID">AttributeUUID corresponding to the ADBBaseObject</param>
/// <param name="myIndexKeyPayload">The ADBBaseObject that is going to be added</param>
/// <param name="myIndexDefinition">The corresponding IndexKeyDefinition</param>
public IndexKey(IndexKey myStartingIndexKey, AttributeUUID myAttributeUUID, ADBBaseObject myIndexKeyPayload, IndexKeyDefinition myIndexDefinition)
{
_hashCode = myStartingIndexKey.GetHashCode();
_indexKeyValues.AddRange(myStartingIndexKey.IndexKeyValues);
if (!myIndexDefinition.IndexKeyAttributeUUIDs.Contains(myAttributeUUID))
{
throw new GraphDBException(new Error_IndexKeyCreationError(myAttributeUUID, myIndexKeyPayload, myIndexDefinition));
}
else
{
AddAAKey(myAttributeUUID, myIndexKeyPayload);
}
}
/// <summary>
/// Instantiates a new IndexKey on the base of another one. Additionally a AADBBaseObject is added.
/// </summary>
/// <param name="myStartingIndexKey">The base of the new IndexKey</param>
/// <param name="myAttributeUUID">AttributeUUID corresponding to the ADBBaseObject</param>
/// <param name="myIndexKeyPayload">The ADBBaseObject that is going to be added</param>
/// <param name="myIndexDefinition">The corresponding IndexKeyDefinition</param>
public IndexKey(IndexKey myStartingIndexKey, AttributeUUID myAttributeUUID, ADBBaseObject myIndexKeyPayload, IndexKeyDefinition myIndexDefinition)
{
_hashCode = myStartingIndexKey.GetHashCode();
#region IEstimable
_estimatedSize = GetBaseSize();
foreach (var aADBBaseObject in myStartingIndexKey.IndexKeyValues)
{
_indexKeyValues.Add(aADBBaseObject);
_estimatedSize += aADBBaseObject.GetEstimatedSize();
}
#endregion
if (!myIndexDefinition.IndexKeyAttributeUUIDs.Contains(myAttributeUUID))
{
throw new GraphDBException(new Error_IndexKeyCreationError(myAttributeUUID, myIndexKeyPayload, myIndexDefinition));
}
else
{
AddAAKey(myAttributeUUID, myIndexKeyPayload);
}
}