org.apache.jena.query.Query.allocAggregate()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.allocAggregate方法的一些代码示例，展示了Query.allocAggregate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.allocAggregate方法的具体详情如下：
包路径：org.apache.jena.query.Query
类名称：Query
方法名：allocAggregate

Query.allocAggregate介绍

暂无

代码示例

代码示例来源：origin: apache/jena

  1. /**
  2.  * Add and expression aggregator and variable to the mapping.
  3.  * 
  4.  * if the expr parameter is not an instance of ExprAggregator then no action is taken.
  5.  * 
  6.  * @param expr The expression to add.
  7.  * @param var The variable that it is bound to.
  8.  */
  9. public void add(Expr expr, Var var) {
  10.   if (expr instanceof ExprAggregator)
  11.   {
  12.     ExprAggregator eAgg = (ExprAggregator)expr;
  13.     Expr expr2 = query.allocAggregate( eAgg.getAggregator() );	
  14.     aggMap.put(var, (ExprAggregator)expr2);
  15.   }
  16. }

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

  1. /**
  2.  * Add and expression aggregator and variable to the mapping.
  3.  * 
  4.  * if the expr parameter is not an instance of ExprAggregator then no action is taken.
  5.  * 
  6.  * @param expr The expression to add.
  7.  * @param var The variable that it is bound to.
  8.  */
  9. public void add(Expr expr, Var var) {
  10.   if (expr instanceof ExprAggregator)
  11.   {
  12.     ExprAggregator eAgg = (ExprAggregator)expr;
  13.     Expr expr2 = query.allocAggregate( eAgg.getAggregator() );	
  14.     aggMap.put(var, (ExprAggregator)expr2);
  15.   }
  16. }

代码示例来源：origin: apache/jena

  1. /**
  2.  * Add all the aggregations from the other handler.
  3.  * @param handler The other handler.
  4.  * @return This handler for chaining.
  5.  */
  6. public AggregationHandler addAll(AggregationHandler handler)
  7. {
  8.   for (ExprAggregator agg : handler.query.getAggregators())
  9.   {
  10.     query.allocAggregate(agg.getAggregator());
  11.   }
  12.   for (Map.Entry<Var, ExprAggregator> entry : handler.aggMap.entrySet())
  13.   {
  14.     aggMap.put( entry.getKey(), entry.getValue());
  15.   }
  16.   return this;
  17. }

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

  1. /**
  2.  * Add all the aggregations from the other handler.
  3.  * @param handler The other handler.
  4.  * @return This handler for chaining.
  5.  */
  6. public AggregationHandler addAll(AggregationHandler handler)
  7. {
  8.   for (ExprAggregator agg : handler.query.getAggregators())
  9.   {
  10.     query.allocAggregate(agg.getAggregator());
  11.   }
  12.   for (Map.Entry<Var, ExprAggregator> entry : handler.aggMap.entrySet())
  13.   {
  14.     aggMap.put( entry.getKey(), entry.getValue());
  15.   }
  16.   return this;
  17. }

代码示例来源：origin: apache/jena

  1. final public Expr FunctionCall() throws ParseException {
  2.            String fname ; Args a ;
  3.  fname = iri();
  4.  a = ArgList();
  5.   if ( AggregateRegistry.isRegistered(fname) ) {
  6.     if ( ! getAllowAggregatesInExpressions() )
  7.      throwParseException("Aggregate expression not legal at this point : "+fname, -1, -1) ;
  8.     Aggregator agg = AggregatorFactory.createCustom(fname, a) ;
  9.     Expr exprAgg = getQuery().allocAggregate(agg) ;
  10.     {if (true) return exprAgg ;}
  11.   }
  12.   {if (true) return new E_Function(fname, a) ;}
  13.  throw new Error("Missing return statement in function");
  14. }

代码示例来源：origin: apache/jena

  1. final public Expr FunctionCall() throws ParseException {
  2.            String fname ; Args a ;
  3.  fname = iri();
  4.  a = ArgList();
  5.   if ( AggregateRegistry.isRegistered(fname) ) {
  6.     if ( ! getAllowAggregatesInExpressions() )
  7.      throwParseException("Aggregate expression not legal at this point : "+fname, -1, -1) ;
  8.     Aggregator agg = AggregatorFactory.createCustom(fname, a) ;
  9.     Expr exprAgg = getQuery().allocAggregate(agg) ;
  10.     {if (true) return exprAgg ;}
  11.   }
  12.   {if (true) return new E_Function(fname, a) ;}
  13.  throw new Error("Missing return statement in function");
  14. }

代码示例来源：origin: org.aksw.jena-sparql-api/jena-sparql-api-mapper

  1. expr = query.allocAggregate(agg);

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

  1. expr = query.allocAggregate(agg);

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

  1. @Override
  2. public void visit(OpGroup opGroup) {
  3.   List<ExprAggregator> a = opGroup.getAggregators();
  4.   // Aggregators are broken up in the algebra, split between a
  5.   // group and an assignment (extend or assign) using a generated var.
  6.   // We record them here and insert later.
  7.   for (ExprAggregator ea : a) {
  8.     // Substitute generated var for actual
  9.     Var givenVar = ea.getAggVar().asVar();
  10.     // Copy aggregator across (?)
  11.     Expr myAggr = query.allocAggregate(ea.getAggregator());
  12.     varExpression.put(givenVar, myAggr);
  13.   }
  14.   VarExprList b = opGroup.getGroupVars();
  15.   for (Var v : b.getVars()) {
  16.     Expr e = b.getExpr(v);
  17.     if (e != null) {
  18.       query.addGroupBy(v, e);
  19.     } else {
  20.       query.addGroupBy(v);
  21.     }
  22.   }
  23.   opGroup.getSubOp().visit(this);
  24. }

代码示例来源：origin: apache/jena

  1. final public Expr iriOrFunction() throws ParseException {
  2.             String iri ; Args a = null ;
  3.  iri = iri();
  4.  switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
  5.  case LPAREN:
  6.  case NIL:
  7.   a = ArgList();
  8.   break;
  9.  default:
  10.   jj_la1[153] = jj_gen;
  11.   ;
  12.  }
  13.  if ( a == null )
  14.    {if (true) return asExpr(createNode(iri)) ;}
  15.  if ( AggregateRegistry.isRegistered(iri) ) {
  16.     if ( ! getAllowAggregatesInExpressions() )
  17.      throwParseException("Aggregate expression not legal at this point : "+iri, -1, -1) ;
  18.     Aggregator agg = AggregatorFactory.createCustom(iri, a) ;
  19.     Expr exprAgg = getQuery().allocAggregate(agg) ;
  20.     {if (true) return exprAgg ;}
  21.   }
  22.  {if (true) return new E_Function(iri, a) ;}
  23.  throw new Error("Missing return statement in function");
  24. }

代码示例来源：origin: apache/jena

  1. final public Expr iriOrFunction() throws ParseException {
  2.             String iri ; Args a = null ;
  3.  iri = iri();
  4.  switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
  5.  case LPAREN:
  6.  case NIL:
  7.   a = ArgList();
  8.   break;
  9.  default:
  10.   jj_la1[173] = jj_gen;
  11.   ;
  12.  }
  13.  if ( a == null )
  14.    {if (true) return asExpr(createNode(iri)) ;}
  15.  if ( AggregateRegistry.isRegistered(iri) ) {
  16.     if ( ! getAllowAggregatesInExpressions() )
  17.      throwParseException("Aggregate expression not legal at this point : "+iri, -1, -1) ;
  18.     Aggregator agg = AggregatorFactory.createCustom(iri, a) ;
  19.     Expr exprAgg = getQuery().allocAggregate(agg) ;
  20.     {if (true) return exprAgg ;}
  21.   }
  22.  {if (true) return new E_Function(iri, a) ;}
  23.  throw new Error("Missing return statement in function");
  24. }

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

  1. public static Query createQueryCount(Query query, Var outputVar, Long itemLimit, Long rowLimit) {
  2.   Query subQuery = query.cloneQuery();
  3.   if(rowLimit != null) {
  4.     subQuery.setDistinct(false);
  5.     subQuery.setLimit(rowLimit);
  6.     subQuery = QueryGenerationUtils.wrapAsSubQuery(subQuery);
  7.     subQuery.setDistinct(true);
  8.   }
  9.   if(itemLimit != null) {
  10.     subQuery.setLimit(itemLimit);
  11.   }
  12.   Element esq = new ElementSubQuery(subQuery);
  13.   Query result = new Query();
  14.   Expr aggCount = result.allocAggregate(new AggCount());
  15.   result.setQuerySelectType();
  16.   result.getProject().add(outputVar, aggCount);
  17.   result.setQueryPattern(esq);
  18.   return result;
  19. }

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

  1. public static Query spoCountTemplate(Node s, Node p, Node o)
  2. {
  3.   Query query = QueryFactory.create();
  4.   query.setQuerySelectType();
  5.   Triple triple = new Triple(s, p, o);
  6.   ElementGroup group = new ElementGroup();
  7.   group.addTriplePattern(triple);
  8.   query.setQueryPattern(group);
  9.   if(s.isVariable()) {
  10.     query.getProject().add(Var.alloc(s.getName()));
  11.   }
  12.   if(p.isVariable()) {
  13.     query.getProject().add(Var.alloc(p.getName()));
  14.   }
  15.   if(o.isVariable()) {
  16.     query.getProject().add(Var.alloc(o.getName()));
  17.   }
  18.   
  19.   query.allocAggregate(new AggCount());
  20.   
  21.   return query;
  22. }

代码示例来源：origin: apache/jena

  1. throwParseException("Aggregate expression not legal at this point",
  2.               t.beginLine, t.beginColumn) ;
  3. Expr exprAgg = getQuery().allocAggregate(agg) ;
  4. {if (true) return exprAgg ;}
  5. throw new Error("Missing return statement in function");

代码示例来源：origin: apache/jena

  1. throwParseException("Aggregate expression not legal at this point",
  2.               t.beginLine, t.beginColumn) ;
  3. Expr exprAgg = getQuery().allocAggregate(agg) ;
  4. {if (true) return exprAgg ;}
  5. throw new Error("Missing return statement in function");

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