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/*******************************************************************************
* Copyright (c) 2010-2014, Bergmann Gabor, Istvan Rath and Daniel Varro
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-v20.html.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package tools.refinery.viatra.runtime.rete.boundary;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import java.util.stream.Stream;
import tools.refinery.viatra.runtime.matchers.context.IInputKey;
import tools.refinery.viatra.runtime.matchers.tuple.Tuple;
import tools.refinery.viatra.runtime.matchers.tuple.Tuples;
import tools.refinery.viatra.runtime.matchers.util.CollectionsFactory;
import tools.refinery.viatra.runtime.rete.network.Network;
import tools.refinery.viatra.runtime.rete.network.Node;
import tools.refinery.viatra.runtime.rete.recipes.InputFilterRecipe;
import tools.refinery.viatra.runtime.rete.recipes.InputRecipe;
import tools.refinery.viatra.runtime.rete.remote.Address;
/**
* A class responsible for connecting input nodes to the runtime context.
*
* @author Bergmann Gabor
*
*/
public final class InputConnector {
Network network;
private Map<IInputKey, Map<Tuple, Address<ExternalInputEnumeratorNode>>> externalInputRoots = CollectionsFactory.createMap();
// /*
// * arity:1 used as simple entity constraints label is the object representing the type null label means all entities
// * regardless of type (global supertype), if allowed
// */
// protected Map<Object, Address<? extends Tunnel>> unaryRoots = CollectionsFactory.getMap();
// /*
// * arity:3 (rel, from, to) used as VPM relation constraints null label means all relations regardless of type
// * (global supertype)
// */
// protected Map<Object, Address<? extends Tunnel>> ternaryEdgeRoots = CollectionsFactory.getMap();
// /*
// * arity:2 (from, to) not used over VPM; can be used as EMF references for instance label is the object representing
// * the type null label means all entities regardless of type if allowed (global supertype), if allowed
// */
// protected Map<Object, Address<? extends Tunnel>> binaryEdgeRoots = CollectionsFactory.getMap();
//
// protected Address<? extends Tunnel> containmentRoot = null;
// protected Address<? extends Supplier> containmentTransitiveRoot = null;
// protected Address<? extends Tunnel> instantiationRoot = null;
// protected Address<? extends Supplier> instantiationTransitiveRoot = null;
// protected Address<? extends Tunnel> generalizationRoot = null;
// protected Address<? extends Supplier> generalizationTransitiveRoot = null;
public InputConnector(Network network) {
super();
this.network = network;
}
public Network getNetwork() {
return network;
}
/**
* Connects a given input filter node to the external input source.
*/
public void connectInputFilter(InputFilterRecipe recipe, Node freshNode) {
final ExternalInputStatelessFilterNode inputNode = (ExternalInputStatelessFilterNode)freshNode;
IInputKey inputKey = (IInputKey) recipe.getInputKey();
inputNode.connectThroughContext(network.getEngine(), inputKey);
}
/**
* Connects a given input enumerator node to the external input source.
*/
public void connectInput(InputRecipe recipe, Node freshNode) {
final ExternalInputEnumeratorNode inputNode = (ExternalInputEnumeratorNode)freshNode;
IInputKey inputKey = (IInputKey) recipe.getInputKey();
Tuple seed = nopSeed(inputKey); // no preseeding as of now
final Address<ExternalInputEnumeratorNode> freshAddress = Address.of(inputNode);
externalInputRoots.computeIfAbsent(inputKey, k -> CollectionsFactory.createMap()).put(seed, freshAddress);
inputNode.connectThroughContext(network.getEngine(), inputKey, seed);
// final Address<Tunnel> freshAddress = Address.of((Tunnel)freshNode);
// if (recipe instanceof TypeInputRecipe) {
// final Object typeKey = ((TypeInputRecipe) recipe).getTypeKey();
//
// if (recipe instanceof UnaryInputRecipe) {
// unaryRoots.put(typeKey, freshAddress);
// new EntityFeeder(freshAddress, this, typeKey).feed();
//// if (typeObject != null && generalizationQueryDirection == GeneralizationQueryDirection.BOTH) {
//// Collection<? extends Object> subTypes = context.enumerateDirectUnarySubtypes(typeObject);
////
//// for (Object subType : subTypes) {
//// Address<? extends Tunnel> subRoot = accessUnaryRoot(subType);
//// network.connectRemoteNodes(subRoot, tn, true);
//// }
//// }
// } else if (recipe instanceof BinaryInputRecipe) {
// binaryEdgeRoots.put(typeKey, freshAddress);
// externalInputRoots.put(rowKey, columnKey, freshAddress);
// new ReferenceFeeder(freshAddress, this, typeKey).feed();
// // if (typeObject != null && generalizationQueryDirection == GeneralizationQueryDirection.BOTH) {
// // Collection<? extends Object> subTypes = context.enumerateDirectTernaryEdgeSubtypes(typeObject);
// //
// // for (Object subType : subTypes) {
// // Address<? extends Tunnel> subRoot = accessTernaryEdgeRoot(subType);
// // network.connectRemoteNodes(subRoot, tn, true);
// // }
// // }
// }
//
//
// }
}
// /**
// * fetches the entity Root node under specified label; returns null if it doesn't exist yet
// */
// public Address<? extends Tunnel> getUnaryRoot(Object label) {
// return unaryRoots.get(label);
// }
//
// public Collection<Address<? extends Tunnel>> getAllUnaryRoots() {
// return unaryRoots.values();
// }
//
// /**
// * fetches the relation Root node under specified label; returns null if it doesn't exist yet
// */
// public Address<? extends Tunnel> getTernaryEdgeRoot(Object label) {
// return ternaryEdgeRoots.get(label);
// }
//
// public Collection<Address<? extends Tunnel>> getAllTernaryEdgeRoots() {
// return ternaryEdgeRoots.values();
// }
//
// /**
// * fetches the reference Root node under specified label; returns null if it doesn't exist yet
// */
// public Address<? extends Tunnel> getBinaryEdgeRoot(Object label) {
// return binaryEdgeRoots.get(label);
// }
//
// public Collection<Address<? extends Tunnel>> getAllBinaryEdgeRoots() {
// return binaryEdgeRoots.values();
// }
//
//
// public Address<? extends Tunnel> getContainmentRoot() {
// return containmentRoot;
// }
//
//
// public Address<? extends Supplier> getContainmentTransitiveRoot() {
// return containmentTransitiveRoot;
// }
//
//
// public Address<? extends Tunnel> getInstantiationRoot() {
// return instantiationRoot;
// }
//
//
// public Address<? extends Supplier> getInstantiationTransitiveRoot() {
// return instantiationTransitiveRoot;
// }
//
//
// public Address<? extends Tunnel> getGeneralizationRoot() {
// return generalizationRoot;
// }
public Stream<Address<ExternalInputEnumeratorNode>> getAllExternalInputNodes() {
return externalInputRoots.values().stream().flatMap(map -> map.values().stream());
}
public Collection<Address<ExternalInputEnumeratorNode>> getAllExternalInputNodesForKey(IInputKey inputKey) {
return externalInputRoots.getOrDefault(inputKey, Collections.emptyMap()).values();
}
public Address<ExternalInputEnumeratorNode> getExternalInputNodeForKeyUnseeded(IInputKey inputKey) {
return externalInputRoots.getOrDefault(inputKey, Collections.emptyMap()).get(nopSeed(inputKey));
}
public Address<ExternalInputEnumeratorNode> getExternalInputNode(IInputKey inputKey, Tuple seed) {
if (seed == null) seed = nopSeed(inputKey);
return externalInputRoots.getOrDefault(inputKey, Collections.emptyMap()).get(seed);
}
Tuple nopSeed(IInputKey inputKey) {
return Tuples.flatTupleOf(new Object[inputKey.getArity()]);
}
}
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