public void connectGraph() {
// make sure I have some elements - not sure what to do otherwise
assert !streamElements.isEmpty();
// go through the list and connect it together:
ListIterator<Stream> childIter;
childIter = (ListIterator<Stream>) streamElements.iterator();
Stream source = null;
while (childIter.hasNext()) {
// advance the iterator:
Stream sink = childIter.next();
assert sink != null;
// setup the sink itself
sink.setupOperator();
if (source != null && source.getOutputChannel() != null) {
// create and connect a pass filter
ChannelConnectFilter connect = new ChannelConnectFilter();
Channel in = source.getOutputChannel();
Channel out = sink.getInputChannel();
connect.useChannels(in, out);
connect.setupOperator();
}
source = sink;
}
// set myself up with proper input and output
{
inputChannel = streamElements.getFirst().getInputChannel();
outputChannel = streamElements.getLast().getOutputChannel();
}
}
void setupBufferLengths(Scheduler buffers) {
ListIterator<Stream> childIter;
childIter = (ListIterator<Stream>) streamElements.iterator();
Stream source = null;
Stream sink = null;
// go through all the children
while (childIter.hasNext()) {
// advance the iterator:
Stream child = childIter.next();
assert child != null;
child.setupBufferLengths(buffers);
source = sink;
sink = child;
if (source != null) {
assert sink != null;
int buffSize = buffers.getBufferSizeBetween(new Iterator(source), new Iterator(sink));
assert buffSize != 0;
StreamIt.totalBuffer += buffSize;
source.getOutputChannel().makePassThrough();
sink.getInputChannel().setChannelSize(buffSize);
}
}
}