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

Query.isQueryResultStar介绍

[英]Answer whether the query had SELECT/DESCRIBE/CONSTRUCT
[中]回答查询是否包含SELECT/DESCRIBE/CONSTRUCT

代码示例

代码示例来源：origin: apache/tinkerpop

  1. if (!query.isQueryResultStar() && !query.hasGroupBy()) {
  2.   final String[] all = new String[vars.size()];
  3.   vars.toArray(all);

代码示例来源：origin: apache/jena

  1. @Override
  2. public void visitSelectResultForm(Query query)
  3. { 
  4.   //query.setResultVars() ;
  5.   if ( ! query.isQueryResultStar() )
  6.     x^= query.getProject().hashCode() ;
  7. }

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

  1. public static boolean isDistinctConceptVar(Query query, Var conceptVar) {
  2.   boolean isDistinct = query.isDistinct();
  3.   Collection<Var> projectVars = query.getProjectVars();
  4.   boolean hasSingleVar = !query.isQueryResultStar() && projectVars != null && projectVars.size() == 1;
  5.   boolean result = isDistinct && hasSingleVar && projectVars.iterator().next().equals(conceptVar);
  6.   return result;
  7. }

代码示例来源：origin: stackoverflow.com

  1. Query query = QueryFactory.create(queryString);
  2. query.isSelectType() && query.isQueryResultStar(); // of the form SELECT *?
  3. query.getDatasetDescription(); // FROM / FROM NAMED bits
  4. query.getQueryPattern(); // The meat of the query, the WHERE bit
  5. ...etc etc..
  6. Op op = Algebra.compile(query); // Get the algebra for the query

代码示例来源：origin: apache/jena

  1. @Override
  2. public void visitSelectResultForm(Query query1)
  3. { 
  4.   check("Not both SELECT queries", query2.isSelectType()) ;
  5.   check("DISTINCT modifier",
  6.      query1.isDistinct() == query2.isDistinct()) ;
  7.   check("SELECT *", query1.isQueryResultStar() == query2.isQueryResultStar()) ;
  8.   check("Result variables",   query1.getProject(), query2.getProject() ) ;
  9. }

代码示例来源：origin: dkuppitz/sparql-gremlin

  1. GraphTraversal<Vertex, ?> convertToGremlinTraversal(final Query query) {
  2.   final Op op = Algebra.compile(query);
  3.   OpWalker.walk(op, this);
  4.   if (!query.isQueryResultStar()) {
  5.     final List<String> vars = query.getResultVars();
  6.     switch (vars.size()) {

代码示例来源：origin: TopQuadrant/shacl

  1. @Override
  2. public void startElement(ElementSubQuery el) {
  3.   if(el.getQuery().isQueryResultStar()) {
  4.     Set<Var> queryVars = new LinkedHashSet<>() ;
  5.     PatternVars.vars(queryVars, el.getQuery().getQueryPattern()) ;
  6.     for(String varName : preBoundVars) {
  7.       if(!SH.currentShapeVar.getVarName().equals(varName) && !SH.shapesGraphVar.getVarName().equals(varName)) {
  8.         if(!queryVars.contains(Var.alloc(varName))) {
  9.           results.add("Sub-query must return all potentially pre-bound variables including $" + varName);
  10.         }
  11.       }
  12.     }
  13.   }
  14.   else {
  15.     VarExprList project = el.getQuery().getProject();
  16.     for(String varName : preBoundVars) {
  17.       if(!SH.currentShapeVar.getVarName().equals(varName) && !SH.shapesGraphVar.getVarName().equals(varName)) {
  18.         if(!project.contains(Var.alloc(varName))) {
  19.           results.add("Sub-query must return all potentially pre-bound variables including $" + varName);
  20.         }
  21.       }
  22.     }
  23.   }
  24. }

代码示例来源：origin: ch.epfl.bluebrain.nexus.org.topbraid/shacl

  1. @Override
  2. public void startElement(ElementSubQuery el) {
  3.   if(el.getQuery().isQueryResultStar()) {
  4.     Set<Var> queryVars = new LinkedHashSet<>() ;
  5.     PatternVars.vars(queryVars, el.getQuery().getQueryPattern()) ;
  6.     for(String varName : preBoundVars) {
  7.       if(!SH.currentShapeVar.getVarName().equals(varName) && !SH.shapesGraphVar.getVarName().equals(varName)) {
  8.         if(!queryVars.contains(Var.alloc(varName))) {
  9.           results.add("Sub-query must return all potentially pre-bound variables including $" + varName);
  10.         }
  11.       }
  12.     }
  13.   }
  14.   else {
  15.     VarExprList project = el.getQuery().getProject();
  16.     for(String varName : preBoundVars) {
  17.       if(!SH.currentShapeVar.getVarName().equals(varName) && !SH.shapesGraphVar.getVarName().equals(varName)) {
  18.         if(!project.contains(Var.alloc(varName))) {
  19.           results.add("Sub-query must return all potentially pre-bound variables including $" + varName);
  20.         }
  21.       }
  22.     }
  23.   }
  24. }

代码示例来源：origin: apache/jena

  1. @Override
  2. public void visitDescribeResultForm(Query query)
  3. {
  4.   out.print("DESCRIBE ") ;
  5.   
  6.   if ( query.isQueryResultStar() )
  7.     out.print("*") ;
  8.   else
  9.   {
  10.     appendVarList(query, out, query.getResultVars()) ;
  11.     if ( query.getResultVars().size() > 0 &&
  12.        query.getResultURIs().size() > 0 )
  13.       out.print(" ") ;
  14.     appendURIList(query, out, query.getResultURIs()) ;
  15.   }
  16.   out.newline() ;
  17. }

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

  1. public Op getApplicableViews(Query query)
  2. {
  3.   Op op = Algebra.compile(query);
  4.   op = Algebra.toQuadForm(op);
  5.   op = ReplaceConstants.replace(op);
  6.   //op = FilterPlacementOptimizer.optimize(op);
  7.   // Add a projection if the query contains a result star
  8.   // in order to filter out auto-generated variables
  9.   if(query.isSelectType() && query.isQueryResultStar()) {
  10.     List<Var> vars = query.getProjectVars();
  11.     op = new OpProject(op, vars);
  12.   }
  13.   System.out.println("Quad form:" + op);
  14.   //Set<OpSparqlViewPattern> result = getApplicableViews(op);
  15.   //Set<OpSparqlViewPattern> result = getApplicableViews(op);
  16.   //TransformFilterPlacement transformer = new TransformFilterPlacement();
  17.   //op.(transformer);
  18.   //op = Algebra.optimize(op);
  19.   Op augmented = _getApplicableViews(op);
  20.   //Op optimizedFilters = FilterPlacementOptimizer2.optimize(augmented);
  21.   //System.out.println(optimizedFilters);
  22.   Op result = augmented;
  23.   //Op result = optimizedFilters;
  24.   System.out.println(result);
  25.   return result;
  26.   //return getApp
  27. }

代码示例来源：origin: apache/jena

  1. if ( isQueryResultStar() )
  2.   findAndAddNamedVars() ;
  3. return ;
  4. if ( isQueryResultStar() )
  5.   findAndAddNamedVars() ;
  6. return ;

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

  1. if(query.isSelectType() && query.isQueryResultStar()) {
  2.   List<Var> vars = query.getProjectVars();
  3.   op = new OpProject(op, vars);

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. @Override
  2. public void visitSelectResultForm(Query query)
  3. {
  4.   out.print("SELECT ") ;
  5.   if ( query.isDistinct() )
  6.     out.print("DISTINCT ") ;
  7.   if ( query.isReduced() )
  8.     out.print("REDUCED ") ;
  9.   out.print(" ") ; //Padding
  10.   
  11.   if ( query.isQueryResultStar() )
  12.     out.print("*") ;
  13.   else
  14.     appendNamedExprList(query, out, query.getProject()) ;
  15.   out.newline() ;
  16. }

代码示例来源：origin: apache/jena

  1. @Override
  2. public void startVisit(Query query) {
  3.   newQuery.setSyntax(query.getSyntax());
  4.   if (query.explicitlySetBaseURI())
  5.     newQuery.setBaseURI(query.getPrologue().getResolver());
  6.   newQuery.setQueryResultStar(query.isQueryResultStar());
  7.   if (query.hasDatasetDescription()) {
  8.     DatasetDescription desc = query.getDatasetDescription();
  9.     for (String x : desc.getDefaultGraphURIs())
  10.       newQuery.addGraphURI(x);
  11.     for (String x : desc.getDefaultGraphURIs())
  12.       newQuery.addNamedGraphURI(x);
  13.   }
  14.   // Aggregators.
  15.   newQuery.getAggregators().addAll(query.getAggregators());
  16. }

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

  1. @Override
  2. public void startVisit(Query query) {
  3.   newQuery.setSyntax(query.getSyntax()) ;
  4.   if ( query.explicitlySetBaseURI() )
  5.     newQuery.setBaseURI(query.getPrologue().getResolver()) ;
  6.   newQuery.setQueryResultStar(query.isQueryResultStar()) ;
  7.   if ( query.hasDatasetDescription() ) {
  8.     DatasetDescription desc = query.getDatasetDescription() ;
  9.     for (String x : desc.getDefaultGraphURIs())
  10.       newQuery.addGraphURI(x) ;
  11.     for (String x : desc.getDefaultGraphURIs())
  12.       newQuery.addNamedGraphURI(x) ;
  13.   }
  14.   // Aggregators.
  15.   newQuery.getAggregators().addAll(query.getAggregators()) ;
  16. }

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

  1. /**
  2.  * Add all the variables from the select handler variable.
  3.  * 
  4.  * @param selectHandler
  5.  *            The select handler to copy the variables from.
  6.  */
  7. public void addAll(SelectHandler selectHandler) {
  8.   setReduced(selectHandler.query.isReduced());
  9.   setDistinct(selectHandler.query.isDistinct());
  10.   query.setQueryResultStar(selectHandler.query.isQueryResultStar());
  11.   VarExprList shProjectVars = selectHandler.query.getProject();
  12.   VarExprList qProjectVars = query.getProject();
  13.   for (Var var : shProjectVars.getVars()) {
  14.     // make sure there are no duplicates
  15.     if (!qProjectVars.contains(var)) {
  16.       qProjectVars.add(var, shProjectVars.getExpr(var));
  17.     }
  18.   }
  19.   aggHandler.addAll( selectHandler.aggHandler );
  20. }

代码示例来源：origin: tarql/tarql

  1. for (Var var: table.getVars()) {
  2.   if (query.isSelectType() && query.isQueryResultStar() 
  3.       && var.equals(TarqlQuery.ROWNUM)) continue;
  4.   tableElement.add(var);
  5. if (query.isSelectType() && query.isQueryResultStar()) {

代码示例来源：origin: apache/jena

  1. /**
  2.  * Add all the variables from the select handler variable.
  3.  * 
  4.  * @param selectHandler
  5.  *            The select handler to copy the variables from.
  6.  */
  7. public void addAll(SelectHandler selectHandler) {
  8.   setReduced(selectHandler.query.isReduced());
  9.   setDistinct(selectHandler.query.isDistinct());
  10.   query.setQueryResultStar(selectHandler.query.isQueryResultStar());
  11.   VarExprList shProjectVars = selectHandler.query.getProject();
  12.   VarExprList qProjectVars = query.getProject();
  13.   for (Var var : shProjectVars.getVars()) {
  14.     // make sure there are no duplicates
  15.     if (!qProjectVars.contains(var)) {
  16.       qProjectVars.add(var, shProjectVars.getExpr(var));
  17.     }
  18.   }
  19.   aggHandler.addAll( selectHandler.aggHandler );
  20. }

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();
  3.   boolean useCountDistinct = !needsWrapping && query.isDistinct() && query.isQueryResultStar();

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