boolean ret = true;
for (DataPort inPort : inputPorts) {
Port fromPort = inPort.getFromPort();
Node fromNode = inPort.getFromNode();
if (fromNode instanceof WSNode) {
WSNode fromWsNode = (WSNode) fromNode;
if (null != fromPort && fromPort instanceof DataPort) {
DataPort fromDataPort = (DataPort) fromPort;
} else {
return false;