@Override
public PeerItem onMasterInstance(int localPort, int masterPort, String masterAddress) {
// store information
PeerItem item = new PeerItem();
item.networkName = NETWORK;
item.isMaster = false;
item.masterName = masterAddress;
item.masterPort = masterPort;
item.distributionStrategy = DISTRIBUTION.toString();
item.port = localPort;
item.useSubgraphSubmission = withSubgraphSubmission;
// set ports and master
Map<String, Object> cfg =
P2P_QueryClient_Instanciator.getP2PImplementationConfiguration();
cfg.put(P2PNetworkCreator.P2PConfigurationConstants.cPORT, localPort);
cfg.put(P2PNetworkCreator.P2PConfigurationConstants.cMASTER_IP, masterAddress);
cfg.put(P2PNetworkCreator.P2PConfigurationConstants.cMASTER_PORT, masterPort);
P2P_QueryClient_Instanciator.setP2PImplementationConfiguration(cfg);
P2P_QueryClient_Instanciator.setSubgraphSubmission(withSubgraphSubmission);
// create instance and store instance
QueryClient qC = createInstance();
item.queryEvaluator = qC;
return item;
}
@Override
public PeerItem onQueryEvaluator(PeerItem evaluator) throws Exception {
// Here you should throw an exception, if the selected QueryEvaluator is not
// allowed, because wrong network or different distribution strategy ...
if (evaluator.queryEvaluator == null)
throw new NullPointerException("Evaluator is not existing anymore.");
if (!evaluator.networkName.equals(NETWORK)) {
throw new IllegalArgumentException("Only same P2P network can be used.");
}
if (!evaluator.distributionStrategy.equals(DISTRIBUTION.toString())) {
throw new IllegalArgumentException("Only same distribution strategy can be used.");
}
if (evaluator.useSubgraphSubmission != withSubgraphSubmission) {
QueryClient evalInstance = evaluator.queryEvaluator;
/*
* try to change the submission type, if special instance
*/
if (evalInstance instanceof P2P_SG_QueryClient_WithSubgraph) {
// update the queryclient and the table row
evaluator.useSubgraphSubmission = withSubgraphSubmission;
((P2P_SG_QueryClient_WithSubgraph) evalInstance)
.setUseSubgraphSubmission(withSubgraphSubmission);
} else
throw new IllegalArgumentException(
"Evaluator does not support changing the behavior of sending subgraphs");
}
return evaluator;
}
@Override
public PeerItem onLocalInstance(int localPort) {
/*
* store information
*/
PeerItem item = new PeerItem();
item.networkName = NETWORK;
item.isMaster = true;
item.distributionStrategy = DISTRIBUTION.toString();
item.port = localPort;
item.useSubgraphSubmission = withSubgraphSubmission;
/*
* store configuration
*/
Map<String, Object> cfg =
P2P_QueryClient_Instanciator.getP2PImplementationConfiguration();
cfg.put(P2PNetworkCreator.P2PConfigurationConstants.cPORT, localPort);
cfg.remove(P2PNetworkCreator.P2PConfigurationConstants.cMASTER_IP);
cfg.remove(P2PNetworkCreator.P2PConfigurationConstants.cMASTER_PORT);
P2P_QueryClient_Instanciator.setP2PImplementationConfiguration(cfg);
P2P_QueryClient_Instanciator.setSubgraphSubmission(withSubgraphSubmission);
// create instance and store instance
QueryClient qC = createInstance();
item.queryEvaluator = qC;
return item;
}
