org.eclipse.rdf4j.query.algebra.Extension类的使用及代码示例

x33g5p2x  于2022-01-19 转载在 其他  
字(9.3k)|赞(0)|评价(0)|浏览(222)

本文整理了Java中org.eclipse.rdf4j.query.algebra.Extension类的一些代码示例，展示了Extension类的具体用法。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类的具体详情如下：
包路径：org.eclipse.rdf4j.query.algebra.Extension
类名称：Extension

Extension介绍

[英]An extension operator that can be used to add bindings to solutions whose values are defined by ValueExpr.
[中]一个扩展运算符，可用于向ValueExpr定义其值的解决方案添加绑定。

代码示例

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

  1. @Override
  2. public boolean equals(Object other) {
  3.   if (other instanceof Extension && super.equals(other)) {
  4.     Extension o = (Extension)other;
  5.     return elements.equals(o.getElements());
  6.   }
  7.   return false;
  8. }

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

  1. @Override
  2. public void meet(Extension node)
  3.   throws RDFHandlerException
  4. {
  5.   if (inlineBindings != null && inlineBindings.extension == node) {
  6.     // this is the first Extension node and has already been handled
  7.     // by meetExtension()
  8.     // to produce inline bindings in SELECT so we can skip it here
  9.     node.getArg().visit(this);
  10.   }
  11.   else {
  12.     // any further Extension nodes produce BIND() clauses
  13.     node.getArg().visit(this);
  14.     for (ExtensionElem elem : node.getElements()) {
  15.       elem.visit(this);
  16.     }
  17.   }
  18. }

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: apache/incubator-rya

  1. @Override
  2. public void meet(Extension extensionNode) throws Exception {
  3.   extensionNode.visitChildren(this);
  4.   if (extensionNode.getArg() instanceof AggregationPipelineQueryNode && extensionNode.getParentNode() != null) {
  5.     AggregationPipelineQueryNode pipelineNode = (AggregationPipelineQueryNode) extensionNode.getArg();
  6.     if (pipelineNode.extend(extensionNode.getElements())) {
  7.       extensionNode.replaceWith(pipelineNode);
  8.     }
  9.   }
  10. }

代码示例来源：origin: eclipse/rdf4j

  1. @Override
  2.   public Extension clone() {
  3.     Extension clone = (Extension)super.clone();
  5.     clone.elements = new ArrayList<>(getElements().size());
  6.     for (ExtensionElem elem : getElements()) {
  7.       clone.addElement(elem.clone());
  8.     }
  10.     return clone;
  11.   }
  12. }

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: org.eclipse.rdf4j/rdf4j-client

  1. String alias = ((ASTVar)aliasNode).getName();
  2. Extension extension = new Extension();
  3. extension.addElement(new ExtensionElem(ve, alias));
  4.   extension.setArg(((Filter)arg).getArg());
  5.   ((Filter)arg).setArg(extension);
  6.   extension.setArg(arg);
  7.   result = extension;

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-sail-lucene-api

  1. @Override
  2.   public void updateQueryModelNodes(boolean hasResult) {
  3.     QueryModelNode replacementNode = hasResult ? new SingletonSet() : new EmptySet();
  4.     geoStatement.replaceWith(replacementNode);
  6.     if (hasResult) {
  7.       filter.replaceWith(filter.getArg());
  8.     }
  9.     else {
  10.       filter.replaceWith(new EmptySet());
  11.     }
  13.     if (functionParent instanceof ExtensionElem) {
  14.       Extension extension = (Extension)functionParent.getParentNode();
  15.       List<ExtensionElem> elements = extension.getElements();
  16.       if (elements.size() > 1) {
  17.         elements.remove(functionParent);
  18.       }
  19.       else {
  20.         extension.replaceWith(extension.getArg());
  21.       }
  22.     }
  23.   }
  24. }

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. }

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: de.tudarmstadt.ukp.inception.rdf4j/rdf4j-spin

  1. @Override
  2. public void meet(Extension node)
  3.   throws RDFHandlerException
  4. {
  5.   node.getArg().visit(this);
  6. }

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

  1. aExt = new Extension();
  2. aExt.addElements(new ExtensionElem(new ValueConstant(aPattern.getSubjectVar().getValue()),
  3.     aPattern.getSubjectVar().getName()));
  4.   aExt = new Extension();
  5. aExt.addElements(new ExtensionElem(new ValueConstant(aPattern.getPredicateVar().getValue()),
  6.     aPattern.getPredicateVar().getName()));
  7.   aExt = new Extension();
  8. aExt.addElements(new ExtensionElem(new ValueConstant(aPattern.getObjectVar().getValue()),
  9.     aPattern.getObjectVar().getName()));

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

  1. public void addElements(Iterable<ExtensionElem> elements) {
  2.   for (ExtensionElem pe : elements) {
  3.     addElement(pe);
  4.   }
  5. }

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

  1. public Extension(TupleExpr arg, ExtensionElem... elements) {
  2.   this(arg);
  3.   addElements(elements);
  4. }

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: org.eclipse.rdf4j/rdf4j-queryparser-sparql

  1. String alias = ((ASTVar)aliasNode).getName();
  2. Extension extension = new Extension();
  3. extension.addElement(new ExtensionElem(ve, alias));
  4.   extension.setArg(((Filter)arg).getArg());
  5.   ((Filter)arg).setArg(extension);
  6.   extension.setArg(arg);
  7.   result = extension;

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-sail-lucene-api

  1. @Override
  2. public void updateQueryModelNodes(boolean hasResult) {
  3.   QueryModelNode replacementNode = hasResult ? new SingletonSet() : new EmptySet();
  4.   geoStatement.replaceWith(replacementNode);
  5.   if (hasResult) {
  6.     filter.replaceWith(filter.getArg());
  7.   }
  8.   else {
  9.     filter.replaceWith(new EmptySet());
  10.   }
  11.   QueryModelNode functionParent = distanceFunction.getParentNode();
  12.   if (functionParent instanceof ExtensionElem) {
  13.     Extension extension = (Extension)functionParent.getParentNode();
  14.     List<ExtensionElem> elements = extension.getElements();
  15.     if (elements.size() > 1) {
  16.       elements.remove(functionParent);
  17.     }
  18.     else {
  19.       extension.replaceWith(extension.getArg());
  20.     }
  21.   }
  22. }

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. @Override
  2. public void meet(Extension node) {
  3.   if (node.getArg().getBindingNames().containsAll(filterVars)) {
  4.     node.getArg().visit(this);
  5.   }
  6.   else {
  7.     relocate(filter, node);
  8.   }
  9. }

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

  1. @Override
  2.   public Extension clone() {
  3.     Extension clone = (Extension)super.clone();
  5.     clone.elements = new ArrayList<ExtensionElem>(getElements().size());
  6.     for (ExtensionElem elem : getElements()) {
  7.       clone.addElement(elem.clone());
  8.     }
  10.     return clone;
  11.   }
  12. }

内容来源于网络，如有侵权，请联系作者删除！

Extension

相关文章

    查看更多

    热门标签

    更多
    JavaquerypythonNode开发语言requestUtil数据库Table后端算法LoggerMessageElementParser

    最新文章

    更多
    • 蜀ICP备13028337号-1 大数据知识库 https://www.saoniuhuo.com © All rights reserved
    • 本站内容来源互联网,如果侵犯您的权益请联系我们删除, 联系方式：448109455@qq.com