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Merge pull request #176 from eclipse/issues/1306_targetNode
sh:targetNode closes eclipse-rdf4j/rdf4j#1306
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88 changes: 88 additions & 0 deletions
88
shacl/src/main/java/org/eclipse/rdf4j/sail/shacl/AST/TargetNode.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,88 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2018 Eclipse RDF4J contributors. | ||
| * All rights reserved. This program and the accompanying materials | ||
| * are made available under the terms of the Eclipse Distribution License v1.0 | ||
| * which accompanies this distribution, and is available at | ||
| * http://www.eclipse.org/org/documents/edl-v10.php. | ||
| *******************************************************************************/ | ||
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| package org.eclipse.rdf4j.sail.shacl.AST; | ||
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| import org.eclipse.rdf4j.common.iteration.Iterations; | ||
| import org.eclipse.rdf4j.model.Resource; | ||
| import org.eclipse.rdf4j.model.Statement; | ||
| import org.eclipse.rdf4j.model.Value; | ||
| import org.eclipse.rdf4j.model.vocabulary.RDF; | ||
| import org.eclipse.rdf4j.model.vocabulary.SHACL; | ||
| import org.eclipse.rdf4j.repository.sail.SailRepositoryConnection; | ||
| import org.eclipse.rdf4j.sail.NotifyingSailConnection; | ||
| import org.eclipse.rdf4j.sail.SailConnection; | ||
| import org.eclipse.rdf4j.sail.shacl.RdfsSubClassOfReasoner; | ||
| import org.eclipse.rdf4j.sail.shacl.ShaclSailConnection; | ||
| import org.eclipse.rdf4j.sail.shacl.planNodes.ExternalTypeFilterNode; | ||
| import org.eclipse.rdf4j.sail.shacl.planNodes.LoggingNode; | ||
| import org.eclipse.rdf4j.sail.shacl.planNodes.PlanNode; | ||
| import org.eclipse.rdf4j.sail.shacl.planNodes.Select; | ||
| import org.eclipse.rdf4j.sail.shacl.planNodes.SetFilterNode; | ||
| import org.eclipse.rdf4j.sail.shacl.planNodes.TrimTuple; | ||
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| import java.util.List; | ||
| import java.util.Set; | ||
| import java.util.stream.Collectors; | ||
| import java.util.stream.Stream; | ||
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| /** | ||
| * The AST (Abstract Syntax Tree) node | ||
| * | ||
| * @author Heshan Jayasinghe | ||
| */ | ||
| public class TargetNode extends NodeShape { | ||
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| Set<Value> targetNodeList; | ||
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| TargetNode(Resource id, SailRepositoryConnection connection) { | ||
| super(id, connection); | ||
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| try (Stream<Statement> stream = Iterations.stream(connection.getStatements(id, SHACL.TARGET_NODE, null))) { | ||
| targetNodeList = stream.map(Statement::getObject).collect(Collectors.toSet()); | ||
| } | ||
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| } | ||
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| @Override | ||
| public PlanNode getPlan(ShaclSailConnection shaclSailConnection, NodeShape nodeShape, boolean printPlans, PlanNode overrideTargetNode) { | ||
| return new TrimTuple(new LoggingNode(new Select(shaclSailConnection, getQuery("?a", "?c", shaclSailConnection.getRdfsSubClassOfReasoner())), ""), 0, 1); | ||
| } | ||
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| @Override | ||
| public PlanNode getPlanAddedStatements(ShaclSailConnection shaclSailConnection, NodeShape nodeShape) { | ||
| return new TrimTuple(new LoggingNode(new Select(shaclSailConnection.getAddedStatements(), getQuery("?a", "?c", null)), ""), 0, 1); | ||
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| } | ||
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| @Override | ||
| public PlanNode getPlanRemovedStatements(ShaclSailConnection shaclSailConnection, NodeShape nodeShape) { | ||
| return new TrimTuple(new Select(shaclSailConnection.getRemovedStatements(), getQuery("?a", "?c", null)), 0, 1); | ||
| } | ||
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| @Override | ||
| public boolean requiresEvaluation(SailConnection addedStatements, SailConnection removedStatements) { | ||
| return true; | ||
| } | ||
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| @Override | ||
| public String getQuery(String subjectVariable, String objectVariable, RdfsSubClassOfReasoner rdfsSubClassOfReasoner) { | ||
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| return targetNodeList.stream() | ||
| .map(r -> "{{ select * where {BIND(<" + r + "> as " + subjectVariable + "). " + subjectVariable + " ?b1 " + objectVariable + " .}}}") | ||
| .reduce((a, b) -> a + " UNION " + b) | ||
| .get(); | ||
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| } | ||
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| @Override | ||
| public PlanNode getTargetFilter(NotifyingSailConnection shaclSailConnection, PlanNode parent) { | ||
| return new LoggingNode(new SetFilterNode(targetNodeList, parent, 0, true), "targetNode filter"); | ||
| } | ||
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| } |
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109 changes: 109 additions & 0 deletions
109
shacl/src/main/java/org/eclipse/rdf4j/sail/shacl/planNodes/SetFilterNode.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,109 @@ | ||
| package org.eclipse.rdf4j.sail.shacl.planNodes; | ||
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| import org.apache.commons.lang.StringEscapeUtils; | ||
| import org.eclipse.rdf4j.common.iteration.CloseableIteration; | ||
| import org.eclipse.rdf4j.model.Value; | ||
| import org.eclipse.rdf4j.sail.SailException; | ||
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| import java.util.Arrays; | ||
| import java.util.Set; | ||
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| public class SetFilterNode implements PlanNode { | ||
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| private Set<Value> targetNodeList; | ||
| private PlanNode parent; | ||
| private int index; | ||
| private boolean returnValid; | ||
| private boolean printed; | ||
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| public SetFilterNode(Set<Value> targetNodeList, PlanNode parent, int index, boolean returnValid) { | ||
| this.targetNodeList = targetNodeList; | ||
| this.parent = parent; | ||
| this.index = index; | ||
| this.returnValid = returnValid; | ||
| } | ||
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| @Override | ||
| public CloseableIteration<Tuple, SailException> iterator() { | ||
| return new CloseableIteration<Tuple, SailException>() { | ||
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| CloseableIteration<Tuple, SailException> iterator = parent.iterator(); | ||
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| Tuple next; | ||
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| private void calulateNext(){ | ||
| while(next == null && iterator.hasNext()){ | ||
| Tuple temp = iterator.next(); | ||
| boolean contains = targetNodeList.contains(temp.getlist().get(index)); | ||
| if(returnValid && contains){ | ||
| next = temp; | ||
| }else if (!returnValid && !contains){ | ||
| next = temp; | ||
| } | ||
| } | ||
| } | ||
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| @Override | ||
| public void close() throws SailException { | ||
| iterator.close(); | ||
| } | ||
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| @Override | ||
| public boolean hasNext() throws SailException { | ||
| calulateNext(); | ||
| return next != null; | ||
| } | ||
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| @Override | ||
| public Tuple next() throws SailException { | ||
| calulateNext(); | ||
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| Tuple temp = next; | ||
| next = null; | ||
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| return temp; | ||
| } | ||
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| @Override | ||
| public void remove() throws SailException { | ||
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| } | ||
| }; | ||
| } | ||
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| @Override | ||
| public int depth() { | ||
| return parent.depth() + 1; | ||
| } | ||
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| @Override | ||
| public void getPlanAsGraphvizDot(StringBuilder stringBuilder) { | ||
| if (printed) { | ||
| return; | ||
| } | ||
| printed = true; | ||
| stringBuilder.append(getId() + " [label=\"" + StringEscapeUtils.escapeJava(this.toString()) + "\"];").append("\n"); | ||
| stringBuilder.append(parent.getId() + " -> " + getId()).append("\n"); | ||
| parent.getPlanAsGraphvizDot(stringBuilder); | ||
| } | ||
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| @Override | ||
| public String getId() { | ||
| return System.identityHashCode(this) + ""; | ||
| } | ||
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| @Override | ||
| public IteratorData getIteratorDataType() { | ||
| return parent.getIteratorDataType(); | ||
| } | ||
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| @Override | ||
| public String toString() { | ||
| return "SetFilterNode{" + | ||
| "targetNodeList=" + Arrays.toString(targetNodeList.toArray()) + | ||
| ", index=" + index + | ||
| ", returnValid=" + returnValid + | ||
| '}'; | ||
| } | ||
| } |
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