org.apache.jena.query.Query.getOrderBy()方法的使用及代码示例

x33g5p2x  于2022-01-28 转载在 其他  
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本文整理了Java中org.apache.jena.query.Query.getOrderBy方法的一些代码示例，展示了Query.getOrderBy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。Query.getOrderBy方法的具体详情如下：
包路径：org.apache.jena.query.Query
类名称：Query
方法名：getOrderBy

Query.getOrderBy介绍

暂无

代码示例

代码示例来源：origin: apache/tinkerpop

  1. /**
  2.  * Extracts any {@code SortCondition} instances from the SPARQL query and holds them in an index of their keys
  3.  * where the value is that keys sorting direction.
  4.  */
  5. private static Map<String, Order> createOrderIndexFromQuery(final Query query) {
  6.   final Map<String, Order> orderingIndex = new HashMap<>();
  7.   if (query.hasOrderBy()) {
  8.     final List<SortCondition> sortingConditions = query.getOrderBy();
  9.     for (SortCondition sortCondition : sortingConditions) {
  10.       final Expr expr = sortCondition.getExpression();
  11.       // by default, the sort will be ascending. getDirection() returns -2 if the DESC/ASC isn't
  12.       // supplied - weird
  13.       orderingIndex.put(expr.getVarName(), sortCondition.getDirection() == -1 ? Order.decr : Order.incr);
  14.     }
  15.   }
  16.   return orderingIndex;
  17. }

代码示例来源：origin: apache/jena

  1. @Override
  2. public void visitOrderBy(Query query)
  3. {
  4.   if ( query.getOrderBy() != null )
  5.     x ^= query.getOrderBy().hashCode() ;
  6. }

代码示例来源：origin: apache/jena

  1. @Override
  2. public void visitOrderBy(Query query1)
  3.  {
  4.    check("ORDER BY", query1.getOrderBy(), query2.getOrderBy() ) ;
  5.  }

代码示例来源：origin: apache/jena

  1. @Override
  2. public void visitOrderBy(Query query) {
  3.   if (query.hasOrderBy()) {
  4.     for (SortCondition sc : query.getOrderBy())
  5.       newQuery.addOrderBy(sc);
  6.   }
  7. }

代码示例来源：origin: SmartDataAnalytics/jena-sparql-api

  1. @Override
  2. public void visitOrderBy(Query query) {
  3.   if ( query.hasOrderBy() ) {
  4.     for (SortCondition sc : query.getOrderBy())
  5.       newQuery.addOrderBy(sc) ;
  6.   }
  7. }

代码示例来源：origin: SmartDataAnalytics/jena-sparql-api

  1. /**
  2.    * <sparql xmlns="http://www.w3.org/2005/sparql-results#" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.w3.org/2001/sw/DataAccess/rf1/result2.xsd">
  3.    * <head>
  4.    *  <variable name="s"/>
  5.    *  <variable name="p"/>
  6.    *  <variable name="o"/>
  7.    * </head>
  8.    * <results distinct="false" ordered="true">
  9.    * @see org.springframework.batch.item.file.FlatFileHeaderCallback#writeHeader(java.io.Writer)
  10.    */
  11.   @Override
  12.   public void writeHeader(Writer writer) throws IOException {
  13.     PrintWriter pw = new PrintWriter(writer);
  14.     pw.println("<?xml version=\"1.0\"?>") ;
  15.     pw.println("<sparql xmlns=\"http://www.w3.org/2005/sparql-results#\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.w3.org/2001/sw/DataAccess/rf1/result2.xsd\">");
  16.     pw.println(" <head>") ;
  17.     List<String> varNames = query.getResultVars();
  18.     for(String varName : varNames) {
  19.       pw.println("  <variable name=\"" + varName + "\" />") ;
  20.     }
  21.     pw.println(" </head>") ;
  22.     pw.print(" <results distinct=\"" + query.isDistinct() + "\" " + "ordered=\"" + !CollectionUtils.isEmpty(query.getOrderBy()) + "\">");
  23.     pw.flush();
  24.   }
  25. });

代码示例来源：origin: apache/jena

  1. @Override
  2. public void setVars(Map<Var, Node> values) {
  3.   if (values.isEmpty()) {
  4.     return;
  5.   }
  6.   ExprRewriter exprRewriter = new ExprRewriter(values);
  7.   ExprList having = exprRewriter.rewrite(new ExprList(query
  8.       .getHavingExprs()));
  9.   List<SortCondition> orderBy = exprRewriter
  10.       .rewriteSortConditionList(query.getOrderBy());
  11.   VarExprList groupBy = exprRewriter.rewrite(query.getGroupBy());
  12.   query.getHavingExprs().clear();
  13.   query.getHavingExprs().addAll(having.getList());
  14.   if (orderBy != null) {
  15.     if (query.getOrderBy() == null) {
  16.       for (SortCondition sc : orderBy) {
  17.         query.addOrderBy(sc);
  18.       }
  19.     } else {
  20.       query.getOrderBy().clear();
  21.       query.getOrderBy().addAll(orderBy);
  22.     }
  23.   }
  24.   query.getGroupBy().clear();
  25.   query.getGroupBy().addAll(groupBy); 
  26. }

代码示例来源：origin: apache/jena

  1. /** Find the variables needed out of this query.
  2.  * If we don't do sorting in-DB, then we need the ORDER BY variables as well. 
  3.  * @param query
  4.  */
  5. public static List<Var> queryOutVars(Query query)
  6. {
  7.   // If part query, need all variables. 
  8.   
  9.   // Project variables
  10.   List<Var> vars = toList(map(query.getResultVars().iterator(), Var::alloc)) ;
  11.   
  12.   // Add the ORDER BY variables
  13.   List<SortCondition> orderConditions = query.getOrderBy() ;
  14.   if ( orderConditions != null )
  15.   {
  16.     for ( SortCondition sc : orderConditions )
  17.     {
  18.       Set<Var> x = sc.getExpression().getVarsMentioned() ;
  19.       for ( Var v :  x )
  20.       {
  21.         if ( ! vars.contains(v) )
  22.           vars.add(v) ;
  23.       }
  24.     }
  25.   }
  26.   return vars ;
  27. }

代码示例来源：origin: org.apache.jena/jena-querybuilder

  1. @Override
  2. public void setVars(Map<Var, Node> values) {
  3.   if (values.isEmpty()) {
  4.     return;
  5.   }
  6.   ExprRewriter exprRewriter = new ExprRewriter(values);
  7.   ExprList having = exprRewriter.rewrite(new ExprList(query
  8.       .getHavingExprs()));
  9.   List<SortCondition> orderBy = exprRewriter
  10.       .rewriteSortConditionList(query.getOrderBy());
  11.   VarExprList groupBy = exprRewriter.rewrite(query.getGroupBy());
  12.   query.getHavingExprs().clear();
  13.   query.getHavingExprs().addAll(having.getList());
  14.   if (orderBy != null) {
  15.     if (query.getOrderBy() == null) {
  16.       for (SortCondition sc : orderBy) {
  17.         query.addOrderBy(sc);
  18.       }
  19.     } else {
  20.       query.getOrderBy().clear();
  21.       query.getOrderBy().addAll(orderBy);
  22.     }
  23.   }
  24.   query.getGroupBy().clear();
  25.   query.getGroupBy().addAll(groupBy); 
  26. }

代码示例来源：origin: apache/jena

  1. @Override
  2. public void visitOrderBy(Query query)
  3. {
  4.   if ( query.hasOrderBy() )
  5.   {
  6.     out.print("ORDER BY ") ;
  7.     boolean first = true ;
  8.     for (SortCondition sc : query.getOrderBy())
  9.     {
  10.       if ( ! first )
  11.         out.print(" ") ;
  12.       sc.format(fmtExpr, out) ;
  13.       first = false ;
  14.     }
  15.     out.println() ;
  16.   }
  17. }

代码示例来源：origin: apache/jena

  1. /**
  2.  * Copy all the modifications from the Solution Modifier argument
  3.  * @param solutionModifier The solution modifier to copy from.
  4.  */
  5. public void addAll(SolutionModifierHandler solutionModifier) {
  6.   List<SortCondition> lst = solutionModifier.query.getOrderBy();
  7.   if (lst != null) {
  8.     for (SortCondition sc : lst) {
  9.       query.addOrderBy(sc);
  10.     }
  11.   }
  12.   query.getGroupBy().addAll(solutionModifier.query.getGroupBy());
  13.   query.getHavingExprs().addAll(solutionModifier.query.getHavingExprs());
  14.   query.setLimit(solutionModifier.query.getLimit());
  15.   query.setOffset(solutionModifier.query.getOffset());
  16. }

代码示例来源：origin: org.apache.jena/jena-querybuilder

  1. /**
  2.  * Copy all the modifications from the Solution Modifier argument
  3.  * @param solutionModifier The solution modifier to copy from.
  4.  */
  5. public void addAll(SolutionModifierHandler solutionModifier) {
  6.   List<SortCondition> lst = solutionModifier.query.getOrderBy();
  7.   if (lst != null) {
  8.     for (SortCondition sc : lst) {
  9.       query.addOrderBy(sc);
  10.     }
  11.   }
  12.   query.getGroupBy().addAll(solutionModifier.query.getGroupBy());
  13.   query.getHavingExprs().addAll(solutionModifier.query.getHavingExprs());
  14.   query.setLimit(solutionModifier.query.getLimit());
  15.   query.setOffset(solutionModifier.query.getOffset());
  16. }

代码示例来源：origin: apache/jena

  1. /** Transform a query using {@link ElementTransform} and {@link ExprTransform}.
  2.  *  It is the responsibility of these transforms to transform to a legal SPARQL query.
  3.  */ 
  4. public static Query transform(Query query, ElementTransform transform, ExprTransform exprTransform) {
  5.   Query q2 = QueryTransformOps.shallowCopy(query);
  6.   // "Shallow copy with transform."
  7.   transformVarExprList(q2.getProject(), exprTransform);
  8.   transformVarExprList(q2.getGroupBy(), exprTransform);
  9.   transformExprList(q2.getHavingExprs(), exprTransform);
  10.   if (q2.getOrderBy() != null) {
  11.     transformSortConditions(q2.getOrderBy(), exprTransform);
  12.   }
  13.   // ?? DOES NOT WORK: transformExprListAgg(q2.getAggregators(), exprTransform) ; ??
  14.   // if ( q2.hasHaving() ) {}
  15.   // if ( q2.hasAggregators() ) {}
  16.   Element el = q2.getQueryPattern();
  17.   Element el2 = ElementTransformer.transform(el, transform, exprTransform);
  18.   // Top level is always a group.
  19.   if (!(el2 instanceof ElementGroup)) {
  20.     ElementGroup eg = new ElementGroup();
  21.     eg.addElement(el2);
  22.     el2 = eg;
  23.   }
  24.   q2.setQueryPattern(el2);
  25.   return q2;
  26. }

代码示例来源：origin: com.github.galigator.openllet/openllet-jena

  1. final List<SortCondition> sortConditions = _query.getOrderBy();
  2. if (sortConditions != null && !sortConditions.isEmpty())
  3.   results = new SortedResultSet(results, sortConditions);

代码示例来源：origin: SmartDataAnalytics/jena-sparql-api

  1. if(query.getOrderBy() == null) {
  2.   query.addOrderBy(sc);
  3. } else {
  4.   query.getOrderBy().add(0, sc);

代码示例来源：origin: Galigator/openllet

  1. final List<SortCondition> sortConditions = _query.getOrderBy();
  2. if (sortConditions != null && !sortConditions.isEmpty())
  3.   results = new SortedResultSet(results, sortConditions);

代码示例来源：origin: Galigator/openllet

  1. final List<SortCondition> sortConditions = _query.getOrderBy();
  2. if (sortConditions != null && !sortConditions.isEmpty())
  3.   results = new SortedResultSet(results, sortConditions);

代码示例来源：origin: apache/jena

  1. if ( query.getOrderBy() != null )
  2.   for ( SortCondition sc : query.getOrderBy() )

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