org.eclipse.rdf4j.query.algebra.Extension.<init>()方法的使用及代码示例

x33g5p2x  于2022-01-19 转载在 其他  
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本文整理了Java中org.eclipse.rdf4j.query.algebra.Extension.<init>()方法的一些代码示例，展示了Extension.<init>()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Extension.<init>()方法的具体详情如下：
包路径：org.eclipse.rdf4j.query.algebra.Extension
类名称：Extension
方法名：<init>

Extension.<init>介绍

暂无

代码示例

代码示例来源：origin: de.tudarmstadt.ukp.inception.rdf4j/rdf4j-spin

  1. private void addSourceExpressions(UnaryTupleOperator op, Collection<ProjectionElem> elems) {
  2.   Extension ext = null;
  3.   for (ProjectionElem projElem : elems) {
  4.     ExtensionElem extElem = projElem.getSourceExpression();
  5.     if (extElem != null) {
  6.       if (ext == null) {
  7.         ext = new Extension(op.getArg());
  8.         op.setArg(ext);
  9.       }
  10.       ext.addElement(extElem);
  11.     }
  12.   }
  13. }

代码示例来源：origin: de.tudarmstadt.ukp.inception.rdf4j/rdf4j-spin

  1. private void visitBind(Resource r)
  2.   throws RDF4JException
  3. {
  4.   Value expr = TripleSources.singleValue(r, SP.EXPRESSION_PROPERTY, store);
  5.   ValueExpr valueExpr = visitExpression(expr);
  6.   Value varValue = TripleSources.singleValue(r, SP.VARIABLE_PROPERTY, store);
  7.   if (!(varValue instanceof Resource)) {
  8.     throw new MalformedSpinException(
  9.         String.format("Value of %s is not a resource", SP.VARIABLE_PROPERTY));
  10.   }
  11.   String varName = getVarName((Resource)varValue);
  12.   tupleNode = new Extension(tupleNode, new ExtensionElem(valueExpr, varName));
  13. }

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-queryalgebra-evaluation

  1. if (varsBefore.contains(name)) {
  2.   UnaryTupleOperator proj = (UnaryTupleOperator)projElems.getParentNode();
  3.   Extension ext = new Extension(proj.getArg());
  4.   proj.setArg(ext);
  5.   Var lostVar = new Var(name);

代码示例来源：origin: de.tudarmstadt.ukp.inception.rdf4j/rdf4j-queryalgebra-evaluation

  1. if (varsBefore.contains(name)) {
  2.   UnaryTupleOperator proj = (UnaryTupleOperator)projElems.getParentNode();
  3.   Extension ext = new Extension(proj.getArg());
  4.   proj.setArg(ext);
  5.   Var lostVar = new Var(name);

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-queryparser-sparql

  1. @Override
  2. public TupleExpr visit(ASTDescribe node, Object data)
  3.   throws VisitorException
  4. {
  5.   TupleExpr tupleExpr = (TupleExpr)data;
  6.   if (tupleExpr == null) {
  7.     tupleExpr = new SingletonSet();
  8.   }
  9.   Extension e = new Extension();
  10.   ProjectionElemList projectionElements = new ProjectionElemList();
  11.   for (int i = 0; i < node.jjtGetNumChildren(); i++) {
  12.     ValueExpr resource = (ValueExpr)node.jjtGetChild(i).jjtAccept(this, null);
  13.     if (resource instanceof Var) {
  14.       projectionElements.addElement(new ProjectionElem(((Var)resource).getName()));
  15.     }
  16.     else {
  17.       String alias = "_describe_" + UUID.randomUUID().toString().replaceAll("-", "_");
  18.       ExtensionElem elem = new ExtensionElem(resource, alias);
  19.       e.addElement(elem);
  20.       projectionElements.addElement(new ProjectionElem(alias));
  21.     }
  22.   }
  23.   if (!e.getElements().isEmpty()) {
  24.     e.setArg(tupleExpr);
  25.     tupleExpr = e;
  26.   }
  27.   Projection p = new Projection(tupleExpr, projectionElements);
  28.   return new DescribeOperator(p);
  29. }

代码示例来源：origin: eclipse/rdf4j

  1. @Override
  2. public TupleExpr visit(ASTDescribe node, Object data)
  3.   throws VisitorException
  4. {
  5.   TupleExpr tupleExpr = (TupleExpr)data;
  6.   if (tupleExpr == null) {
  7.     tupleExpr = new SingletonSet();
  8.   }
  9.   Extension e = new Extension();
  10.   ProjectionElemList projectionElements = new ProjectionElemList();
  11.   for (int i = 0; i < node.jjtGetNumChildren(); i++) {
  12.     ValueExpr resource = (ValueExpr)node.jjtGetChild(i).jjtAccept(this, null);
  13.     if (resource instanceof Var) {
  14.       projectionElements.addElement(new ProjectionElem(((Var)resource).getName()));
  15.     }
  16.     else {
  17.       String alias = "_describe_" + UUID.randomUUID().toString().replaceAll("-", "_");
  18.       ExtensionElem elem = new ExtensionElem(resource, alias);
  19.       e.addElement(elem);
  20.       projectionElements.addElement(new ProjectionElem(alias));
  21.     }
  22.   }
  23.   if (!e.getElements().isEmpty()) {
  24.     e.setArg(tupleExpr);
  25.     tupleExpr = e;
  26.   }
  27.   Projection p = new Projection(tupleExpr, projectionElements);
  28.   return new DescribeOperator(p);
  29. }

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-client

  1. @Override
  2. public TupleExpr visit(ASTDescribe node, Object data)
  3.   throws VisitorException
  4. {
  5.   TupleExpr tupleExpr = (TupleExpr)data;
  6.   if (tupleExpr == null) {
  7.     tupleExpr = new SingletonSet();
  8.   }
  9.   Extension e = new Extension();
  10.   ProjectionElemList projectionElements = new ProjectionElemList();
  11.   for (int i = 0; i < node.jjtGetNumChildren(); i++) {
  12.     ValueExpr resource = (ValueExpr)node.jjtGetChild(i).jjtAccept(this, null);
  13.     if (resource instanceof Var) {
  14.       projectionElements.addElement(new ProjectionElem(((Var)resource).getName()));
  15.     }
  16.     else {
  17.       String alias = "_describe_" + UUID.randomUUID().toString().replaceAll("-", "_");
  18.       ExtensionElem elem = new ExtensionElem(resource, alias);
  19.       e.addElement(elem);
  20.       projectionElements.addElement(new ProjectionElem(alias));
  21.     }
  22.   }
  23.   if (!e.getElements().isEmpty()) {
  24.     e.setArg(tupleExpr);
  25.     tupleExpr = e;
  26.   }
  27.   Projection p = new Projection(tupleExpr, projectionElements);
  28.   return new DescribeOperator(p);
  29. }

代码示例来源：origin: de.tudarmstadt.ukp.inception.rdf4j/rdf4j-spin

  1. private TupleExpr visitHaving(Resource having)
  2.   throws RDF4JException
  3. {
  4.   UnaryTupleOperator op = (UnaryTupleOperator)group.getParentNode();
  5.   op.setArg(new Extension(group));
  6.   Iteration<? extends Resource, QueryEvaluationException> iter = TripleSources.listResources(having,
  7.       store);
  8.   while (iter.hasNext()) {
  9.     Resource r = iter.next();
  10.     ValueExpr havingExpr = visitExpression(r);
  11.     Filter filter = new Filter(op.getArg(), havingExpr);
  12.     op.setArg(filter);
  13.     op = filter;
  14.   }
  15.   return op;
  16. }

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-queryalgebra-evaluation

  1. private void renameVar(Var oldVar, Var newVar, Filter filter) {
  2.   filter.getArg().visit(new VarRenamer(oldVar, newVar));
  3.   // TODO: skip this step if old variable name is not used
  4.   // Replace SameTerm-filter with an Extension, the old variable name
  5.   // might still be relevant to nodes higher in the tree
  6.   Extension extension = new Extension(filter.getArg());
  7.   extension.addElement(new ExtensionElem(new Var(newVar.getName()), oldVar.getName()));
  8.   filter.replaceWith(extension);
  9. }

代码示例来源：origin: de.tudarmstadt.ukp.inception.rdf4j/rdf4j-queryalgebra-evaluation

  1. private void renameVar(Var oldVar, Var newVar, Filter filter) {
  2.   filter.getArg().visit(new VarRenamer(oldVar, newVar));
  3.   // TODO: skip this step if old variable name is not used
  4.   // Replace SameTerm-filter with an Extension, the old variable name
  5.   // might still be relevant to nodes higher in the tree
  6.   Extension extension = new Extension(filter.getArg());
  7.   extension.addElement(new ExtensionElem(new Var(newVar.getName()), oldVar.getName()));
  8.   filter.replaceWith(extension);
  9. }

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-queryparser-serql

  1. Extension extension = new Extension();
  2. ProjectionElemList projElemList = new ProjectionElemList();

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-client

  1. collector.meet(orderElem);
  2. Extension extension = new Extension();

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-queryparser-sparql

  1. collector.meet(orderElem);
  2. Extension extension = new Extension();

代码示例来源：origin: eclipse/rdf4j

  1. collector.meet(orderElem);
  2. Extension extension = new Extension();

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-client

  1. aExt = new Extension();
  2. aExt = new Extension();
  3. aExt = new Extension();

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-queryrender

  1. aExt = new Extension();
  2. aExt = new Extension();
  3. aExt = new Extension();

代码示例来源：origin: eclipse/rdf4j

  1. aExt = new Extension();
  2. aExt = new Extension();
  3. aExt = new Extension();

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-client

  1. Extension extension = new Extension();
  2. for (AggregateOperator operator : collector.getOperators()) {
  3.   Var var = createAnonVar();

代码示例来源：origin: apache/incubator-rya

  1. @Test
  2. public void testExtension() throws Exception {
  3.   QueryRoot queryTree = new QueryRoot(new Extension(
  4.       new StatementPattern(new Var("x"), constant(TAKES), new Var("c")),
  5.       new ExtensionElem(new Var("x"), "renamed"),
  6.       new ExtensionElem(new ValueConstant(TAKES), "constant")));
  7.   SparqlToPipelineTransformVisitor visitor = new SparqlToPipelineTransformVisitor(collection);
  8.   queryTree.visit(visitor);
  9.   Assert.assertTrue(queryTree.getArg() instanceof AggregationPipelineQueryNode);
  10.   AggregationPipelineQueryNode pipelineNode = (AggregationPipelineQueryNode) queryTree.getArg();
  11.   Assert.assertEquals(Sets.newHashSet("x", "c", "renamed", "constant"), pipelineNode.getAssuredBindingNames());
  12. }

代码示例来源：origin: apache/incubator-rya

  1. @Test
  2.   public void testUnsupportedExtension() throws Exception {
  3.     StatementPattern sp = new StatementPattern(new Var("x"), constant(TAKES), new Var("c"));
  4.     List<ExtensionElem> elements = Arrays.asList(new ExtensionElem(new Var("x"), "renamed"),
  5.         new ExtensionElem(new Not(new ValueConstant(VF.createLiteral(true))), "notTrue"),
  6.         new ExtensionElem(new ValueConstant(TAKES), "constant"));
  7.     Extension extensionNode = new Extension(sp, elements);
  8.     QueryRoot queryTree = new QueryRoot(extensionNode);
  9.     SparqlToPipelineTransformVisitor visitor = new SparqlToPipelineTransformVisitor(collection);
  10.     queryTree.visit(visitor);
  11.     Assert.assertTrue(queryTree.getArg() instanceof Extension);
  12.     Assert.assertEquals(elements, ((Extension) queryTree.getArg()).getElements());
  13.     TupleExpr innerQuery = ((Extension) queryTree.getArg()).getArg();
  14.     Assert.assertTrue(innerQuery instanceof AggregationPipelineQueryNode);
  15.     AggregationPipelineQueryNode pipelineNode = (AggregationPipelineQueryNode) innerQuery;
  16.     Assert.assertEquals(Sets.newHashSet("x", "c"), pipelineNode.getAssuredBindingNames());
  17.   }
  18. }

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