/// <summary>
/// Makes a reader for the current input.
/// </summary>
/// <typeparam name="T">The record type of the input.</typeparam>
/// <param name="readerFactory">The reader factory.</param>
/// <returns>A reader for the current input.</returns>
public DryadLinqVertexReader <T> MakeReader <T>(DryadLinqFactory <T> readerFactory)
{
bool keepPortOrder = this.m_vertexParams.KeepInputPortOrder(this.m_nextInput);
UInt32 startPort = this.m_nextInputPort;
this.m_nextInputPort += this.m_vertexParams.InputPortCount(this.m_nextInput);
UInt32 endPort = this.m_nextInputPort;
this.m_nextInput++;
return(new DryadLinqVertexReader <T>(this, readerFactory, startPort, endPort, keepPortOrder));
}
public DryadLinqVertexWriter(VertexEnv denv, DryadLinqFactory <T> writerFactory, UInt32 portNum)
{
this.m_dvertexEnv = denv;
this.m_nativeHandle = denv.NativeHandle;
this.m_startPort = portNum;
this.m_numberOfOutputs = 1;
this.m_writerFactory = writerFactory;
Int32 buffSize = this.m_dvertexEnv.GetWriteBuffSize();
DryadLinqRecordWriter <T> writer = writerFactory.MakeWriter(this.m_nativeHandle, portNum, buffSize);
this.m_writers = new DryadLinqRecordWriter <T>[] { writer };
}
public DryadLinqVertexReader(VertexEnv denv, DryadLinqFactory <T> readerFactory, UInt32 portNum)
{
this.m_dvertexEnv = denv;
this.m_nativeHandle = denv.NativeHandle;
this.m_readerFactory = readerFactory;
this.m_startPort = portNum;
this.m_numberOfInputs = 1;
this.m_keepInputPortOrder = false;
this.m_portPermArray = new UInt32[] { 0 };
DryadLinqRecordReader <T> reader = readerFactory.MakeReader(this.m_nativeHandle, portNum);
this.m_readers = new DryadLinqRecordReader <T>[] { reader };
this.m_isUsed = false;
}
/// <summary>
/// Make a writer for the current output.
/// </summary>
/// <typeparam name="T">The record type of the output.</typeparam>
/// <param name="writerFactory">The writer factory.</param>
/// <returns>A writer for the current output.</returns>
public DryadLinqVertexWriter <T> MakeWriter <T>(DryadLinqFactory <T> writerFactory)
{
if (this.m_nextOutputPort + 1 < this.m_vertexParams.OutputArity)
{
UInt32 portNum = this.m_nextOutputPort++;
return(new DryadLinqVertexWriter <T>(this, writerFactory, portNum));
}
else
{
UInt32 startPort = this.m_nextOutputPort;
UInt32 endPort = this.NumberOfOutputs;
return(new DryadLinqVertexWriter <T>(this, writerFactory, startPort, endPort));
}
}
public DryadLinqVertexWriter(VertexEnv denv, DryadLinqFactory <T> writerFactory, UInt32 startPort, UInt32 endPort)
{
this.m_dvertexEnv = denv;
this.m_nativeHandle = denv.NativeHandle;
this.m_startPort = startPort;
this.m_numberOfOutputs = endPort - startPort;
this.m_writerFactory = writerFactory;
this.m_writers = new DryadLinqRecordWriter <T> [this.m_numberOfOutputs];
Int32 buffSize = this.m_dvertexEnv.GetWriteBuffSize();
for (UInt32 i = 0; i < this.m_numberOfOutputs; i++)
{
this.m_writers[i] = writerFactory.MakeWriter(this.m_nativeHandle, i + startPort, buffSize);
}
}
public DryadLinqVertexReader(VertexEnv denv,
DryadLinqFactory <T> readerFactory,
UInt32 startPort,
UInt32 endPort,
bool keepInputPortOrder)
{
this.m_dvertexEnv = denv;
this.m_nativeHandle = denv.NativeHandle;
this.m_readerFactory = readerFactory;
this.m_startPort = startPort;
this.m_numberOfInputs = endPort - startPort;
this.m_keepInputPortOrder = keepInputPortOrder;
this.m_portPermArray = new UInt32[this.NumberOfInputs];
for (UInt32 i = 0; i < this.NumberOfInputs; i++)
{
this.m_portPermArray[i] = i;
}
if (!keepInputPortOrder)
{
Random rdm = new Random(System.Diagnostics.Process.GetCurrentProcess().Id);
Int32 max = (Int32)this.NumberOfInputs;
for (UInt32 i = 1; i < this.NumberOfInputs; i++)
{
int idx = rdm.Next(max);
UInt32 n = this.m_portPermArray[max - 1];
this.m_portPermArray[max - 1] = this.m_portPermArray[idx];
this.m_portPermArray[idx] = n;
max--;
}
}
this.m_readers = new DryadLinqRecordReader <T> [this.NumberOfInputs];
for (UInt32 i = 0; i < this.NumberOfInputs; i++)
{
this.m_readers[i] = this.m_readerFactory.MakeReader(this.m_nativeHandle, startPort + i);
}
this.m_isUsed = false;
}
