private bool AddFull(T Record, Node add, bool check = false, Record tmpRec = null)
{
if (check && this.FindAddress(Record, add) >= 0)
{
return(false);
}
Block <T> block = new Block <T>(this.BlockSize, Record, -1);
if (add.Next.LastOrDefault() == null || add.Next.Last().BlockSize == this.BlockSize) // if node has not any another blocks
{ // or block is full
add.Next.AddLast(new Node(0, this.LastPosition)); // alloc position for new block
this.LastPosition += block.GetSize();
}
if (add.Next.Last().BlockSize > 0)
{
this.LoadBlock(ref block, add.Next.Last().Address);
}
if (tmpRec == null)
{
this.RemoveAddEvent();
block.Add(new Record(ObjectReader.Add(Record), Record.GetKey()));
this.AddAddEvent();
}
else
{
block.Add(tmpRec);
}
add.Next.Last().BlockSize = block.Records.Count; // set blockSize
bw.Seek(add.Next.Last().Address, SeekOrigin.Begin);
bw.Write(block.ToByteArray()); // write to file
return(true);
}
public void RecordExample()
{
// To create a record that implement IDataRecord we start with a record set definition.
RecordSetDefinition recordSetDefinition = new RecordSetDefinition(
new ColumnDefinition("ID", SqlDbType.Int),
new ColumnDefinition("Name", SqlDbType.Char, 50),
new ColumnDefinition("Description", SqlDbType.NVarChar),
// This column is not nullable so defaults to true
new ColumnDefinition("Active", SqlDbType.Bit, isNullable: false, defaultValue: true)
);
// Now we can create a record
IObjectRecord dataRecord = new ObjectRecord(recordSetDefinition, 1, "Test", "This is my test record");
// Or we can create one with random values
IObjectRecord randomRecord = new ObjectRecord(recordSetDefinition, true);
// To create a record that throws an exception we first create a SqlException
// We can't do this directly, but we can use our prototypes to construct one.
// SqlExceptions are made from a collection of SqlErrors - which can make like this :
SqlErrorCollection errorCollection = new SqlErrorCollectionPrototype
{
new SqlErrorPrototype(
1000,
80,
17,
"MyFakeServer",
"Connection Timeout.",
"spMySproc",
54)
};
SqlException sqlException = new SqlExceptionPrototype(errorCollection, "9.0.0.0", Guid.NewGuid());
IObjectRecord exceptionRecord = new ExceptionRecord(sqlException);
// We can stick these records into a recordset
// Note the records must have the same RecordSetDefinition (unless it's an exception record)
// The final record will through an exception when reached!
ObjectSet recordSet = new ObjectSet(recordSetDefinition)
{
dataRecord,
randomRecord,
//exceptionRecord
};
// We can add recordsets to an ObjectReader
ObjectReader reader = new ObjectReader
{
recordSet
};
// We can also add random record sets - this one has the same definition as the first.
reader.Add(new RandomSet(recordSetDefinition));
// We can also fix certain rows values using the column generators arry, a null indicates
// that the column should us a random value, otherwise a lambda can be supplied - in this case
// it sets the row to the row number (1 - indexed).
reader.Add(
new RandomSet(
recordSetDefinition,
columnGenerators: new Func <int, object>[] { null, row => "Row #" + row }));
// Whereas this one has a random set of columns (with random types).
reader.Add(new RandomSet(10));
// Now that we have a reader we can use it like a normal reader - it even simulates disposal.
using (IDataReader dataReader = reader)
{
int recordset = 1;
do
{
Trace.Write("Recordset #" + recordset);
int rows = 0;
while (dataReader.Read())
{
rows++;
}
Trace.WriteLine(" - " + rows + " rows.");
recordset++;
} while (dataReader.NextResult());
}
}
public void RecordExample()
{
// To create a record that implement IDataRecord we start with a record set definition.
RecordSetDefinition recordSetDefinition = new RecordSetDefinition(
new ColumnDefinition("ID", SqlDbType.Int),
new ColumnDefinition("Name", SqlDbType.Char, 50),
new ColumnDefinition("Description", SqlDbType.NVarChar),
// This column is not nullable so defaults to true
new ColumnDefinition("Active", SqlDbType.Bit, isNullable: false, defaultValue: true)
);
// Now we can create a record
IObjectRecord dataRecord = new ObjectRecord(recordSetDefinition, 1, "Test", "This is my test record");
// Or we can create one with random values
IObjectRecord randomRecord = new ObjectRecord(recordSetDefinition, true);
// To create a record that throws an exception we first create a SqlException
// We can't do this directly, but we can use our prototypes to construct one.
// SqlExceptions are made from a collection of SqlErrors - which can make like this :
SqlErrorCollection errorCollection = new SqlErrorCollectionPrototype
{
new SqlErrorPrototype(
1000,
80,
17,
"MyFakeServer",
"Connection Timeout.",
"spMySproc",
54)
};
SqlException sqlException = new SqlExceptionPrototype(errorCollection, "9.0.0.0", Guid.NewGuid());
IObjectRecord exceptionRecord = new ExceptionRecord(sqlException);
// We can stick these records into a recordset
// Note the records must have the same RecordSetDefinition (unless it's an exception record)
// The final record will through an exception when reached!
ObjectSet recordSet = new ObjectSet(recordSetDefinition)
{
dataRecord,
randomRecord,
//exceptionRecord
};
// We can add recordsets to an ObjectReader
ObjectReader reader = new ObjectReader
{
recordSet
};
// We can also add random record sets - this one has the same definition as the first.
reader.Add(new RandomSet(recordSetDefinition));
// We can also fix certain rows values using the column generators arry, a null indicates
// that the column should us a random value, otherwise a lambda can be supplied - in this case
// it sets the row to the row number (1 - indexed).
reader.Add(
new RandomSet(
recordSetDefinition,
columnGenerators: new Func<int, object>[] { null, row => "Row #" + row }));
// Whereas this one has a random set of columns (with random types).
reader.Add(new RandomSet(10));
// Now that we have a reader we can use it like a normal reader - it even simulates disposal.
using (IDataReader dataReader = reader)
{
int recordset = 1;
do
{
Trace.Write("Recordset #" + recordset);
int rows = 0;
while (dataReader.Read())
rows++;
Trace.WriteLine(" - " + rows + " rows.");
recordset++;
} while (dataReader.NextResult());
}
}
private bool Add(T Record, Record tmpRec = null, bool check = true)
{
Block <T> block = new Block <T>(BlockSize, Record);
BitArray recordHash = Record.GetHash(this.MaxDepth);
Node add = Trie.Find(recordHash, out int depth);
if (add == null || // add is null only on first insert
(depth < this.MaxDepth && add.BlockSize <= this.BlockSize) || // split or add
(depth == this.MaxDepth && add.BlockSize < this.BlockSize)) // just add
{
if (add == null || add.BlockSize < 0)
{
if (tmpRec == null)
{
this.RemoveAddEvent();
block.Add(new Record(ObjectReader.Add(Record), Record.GetKey()));
this.AddAddEvent();
}
else
{
block.Add(tmpRec);
}
if (add == null)
{
Trie.Add(recordHash, this.LastPosition, 1);
}
else
{
add.BlockSize = 1;
add.Address = this.LastPosition;
}
bw.Seek(this.LastPosition, SeekOrigin.Begin);
bw.Write(block.ToByteArray());
this.LastPosition += block.GetSize();
}
else
{
if (check && this.FindAddress(Record, add) >= 0)
{
return(false);
}
if (tmpRec == null)
{
this.RemoveAddEvent();
tmpRec = new Record(ObjectReader.Add(Record), Record.GetKey());
this.AddAddEvent();
}
this.LoadBlock(ref block, add.Address);
if (add.BlockSize == BlockSize)
{
Block <T> blockNew = block.Split(Record, this.MaxDepth, tmpRec.Address);
if (blockNew == null)
{
return(this.AddFull(Record, add, false, tmpRec));
}
Node nodeNew = Trie.Add(recordHash, this.LastPosition, blockNew.Depth, true);
nodeNew.Right.BlockSize = blockNew.Records.Count;
nodeNew.Left.BlockSize = block.Records.Count;
nodeNew.Left.Address = add.Address;
if (add.Next.Count > 0)
{
nodeNew.Left.Next = new LinkedList <Node>(add.Next);
add.Next.Clear();
}
add.BlockSize = -1;
add.Address = -1;
bw.Seek(nodeNew.Right.Address, SeekOrigin.Begin);
bw.Write(blockNew.ToByteArray());
this.LastPosition += block.GetSize();
add = nodeNew.Left;
}
else
{
block.Add(tmpRec);
add.BlockSize++;
}
bw.Seek(add.Address, SeekOrigin.Begin);
bw.Write(block.ToByteArray());
}
}
else
{
return(this.AddFull(Record, add, tmpRec == null, tmpRec));
}
return(true);
}
