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

x33g5p2x  于2022-01-28 转载在 其他  
字(7.3k)|赞(0)|评价(0)|浏览(176)

本文整理了Java中org.apache.jena.query.Query.getGroupBy方法的一些代码示例，展示了Query.getGroupBy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.getGroupBy方法的具体详情如下：
包路径：org.apache.jena.query.Query
类名称：Query
方法名：getGroupBy

Query.getGroupBy介绍

暂无

代码示例

代码示例来源：origin: apache/tinkerpop

  1. final VarExprList lstExpr = query.getGroupBy();
  2. String grpVar = "";
  3. for (Var expr : lstExpr.getVars()) {

代码示例来源：origin: apache/jena

  1. @Override
  2. public void visitGroupBy(Query query1)
  3. {
  4.   check("GROUP BY", query1.getGroupBy(), query2.getGroupBy()) ;
  5. }

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

  1. public static boolean isGroupedOnlyByVar(Query query, Var groupVar) {
  2.   boolean result = false;
  3.   boolean hasOneGroup = query.getGroupBy().size() == 1;
  4.   if(hasOneGroup) {
  5.     Expr expr = query.getGroupBy().getExprs().values().iterator().next();
  6.     if(expr instanceof ExprVar) {
  7.       Var v = expr.asVar();
  8.       result = v.equals(groupVar);
  9.     }
  10.   }
  11.   return result;
  12. }

代码示例来源：origin: apache/jena

  1. @Override
  2. public void visitGroupBy(Query query)
  3. {
  4.   if ( query.hasGroupBy() )
  5.     x ^= query.getGroupBy().hashCode() ;
  6. }

代码示例来源：origin: apache/jena

  1. @Override
  2. public void visitGroupBy(Query query)
  3. {
  4.   if ( query.hasGroupBy() )
  5.   {
  6.     // Can have an empty GROUP BY list if the groupin gis implicit
  7.     // by use of an aggregate in the SELECT clause.
  8.     if ( ! query.getGroupBy().isEmpty() )
  9.     {
  10.       out.print("GROUP BY ") ;
  11.       appendNamedExprList(query, out, query.getGroupBy()) ;
  12.       out.println();
  13.     }
  14.   }
  15. }

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: 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: 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. @Override
  2. public void visitGroupBy(Query query) {
  3.   if (query.hasGroupBy()) {
  4.     VarExprList x = query.getGroupBy();
  5.     for (Var v : x.getVars()) {
  6.       Expr expr = x.getExpr(v);
  7.       if (expr == null)
  8.         newQuery.addGroupBy(v);
  9.       else
  10.         newQuery.addGroupBy(v, expr);
  11.     }
  12.   }
  13. }

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: SmartDataAnalytics/jena-sparql-api

  1. @Override
  2. public void visitGroupBy(Query query) {
  3.   if ( query.hasGroupBy() ) {
  4.     VarExprList x = query.getGroupBy() ;
  5.     for (Var v : x.getVars()) {
  6.       Expr expr = x.getExpr(v) ;
  7.       if ( expr == null )
  8.         newQuery.addGroupBy(v) ;
  9.       else
  10.         newQuery.addGroupBy(v, expr) ;
  11.     }
  12.   }
  13. }

代码示例来源：origin: apache/jena

  1. VarExprList groupKey = query.getGroupBy() ;

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

  1. public static Query transform(Query query, ElementTransform transform, ExprTransform exprTransform) {
  2.   Query q2 = QueryTransformOps.shallowCopy(query) ;
  3.   transformVarExprList(q2.getProject(), exprTransform) ;
  4.   transformVarExprList(q2.getGroupBy(), exprTransform) ;
  5.   // Nothing to do about ORDER BY - leave to sort by that variable.
  6.   Element el = q2.getQueryPattern() ;
  7.   Element el2 = ElementTransformer.transform(el, transform, exprTransform) ;
  8.   // Top level is always a group.
  9.   if ( ! ( el2 instanceof ElementGroup ) ) {
  10.     ElementGroup eg = new ElementGroup() ;
  11.     eg.addElement(el2);
  12.     el2 = eg ;
  13.   }
  14.   q2.setQueryPattern(el2) ;
  15.   return q2 ;
  16. }

代码示例来源：origin: apache/jena

  1. private static void check(Query query, Collection<Var> vars)
  2. {
  3.   // Check any expressions are assigned to fresh variables.
  4.   checkExprListAssignment(vars, query.getProject()) ;
  5.   
  6.   // Check for SELECT * GROUP BY
  7.   // Legal in ARQ, not in SPARQL 1.1
  8.   if ( ! Syntax.syntaxARQ.equals(query.getSyntax()) )
  9.   {
  10.     if ( query.isQueryResultStar() && query.hasGroupBy() )
  11.       throw new QueryParseException("SELECT * not legal with GROUP BY", -1 , -1) ;
  12.   }
  13.   
  14.   // Check any variable in an expression is in scope (if GROUP BY) 
  15.   checkExprVarUse(query) ;
  16.   
  17.   // Check GROUP BY AS 
  18.   // ENABLE
  19.   if ( false && query.hasGroupBy() )
  20.   {
  21.     VarExprList exprList2 = query.getGroupBy() ;
  22.     checkExprListAssignment(vars, exprList2) ;
  23.   // CHECK 
  24.   }
  25.   
  26. }

代码示例来源：origin: apache/jena

  1. query.getGroupBy().addAll(level.opGroup.getGroupVars()) ;
  2. level.opGroup.getAggregators().forEach(eAgg -> {
  3.   ExprVar v = eAgg.getAggVar() ;

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: SmartDataAnalytics/jena-sparql-api

  1. public static long countQuery(Query query, QueryExecutionFactory qef) {
  2.   boolean needsWrapping = !query.getGroupBy().isEmpty() || !query.getAggregators().isEmpty();

代码示例来源：origin: apache/jena

  1. op = OpGroup.create(op, query.getGroupBy(), query.getAggregators()) ;

代码示例来源：origin: rdfhdt/hdt-java

  1. if(ag==null || !query.getHavingExprs().isEmpty() || !query.getGroupBy().isEmpty() || query.hasLimit() || query.hasOffset() || !( (ag instanceof AggCount) || (ag instanceof AggCountVar) || (ag instanceof AggCountDistinct) || (ag instanceof AggCountVarDistinct)) ) {
  2.   return null;

内容来源于网络，如有侵权，请联系作者删除！

query

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

    Query类方法

    • 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