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

Query.isDistinct介绍

暂无

代码示例

代码示例来源：origin: apache/tinkerpop

  1. final String[] all = new String[vars.size()];
  2. vars.toArray(all);
  3. if (query.isDistinct()) {
  4.   traversal = traversal.dedup(all);

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: 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: dkuppitz/sparql-gremlin

  1. throw new IllegalStateException();
  2.   case 1:
  3.     if (query.isDistinct()) {
  4.       traversal = traversal.dedup(vars.get(0));
  5.     break;
  6.   case 2:
  7.     if (query.isDistinct()) {
  8.       traversal = traversal.dedup(vars.get(0), vars.get(1));
  9.     final String[] all = new String[vars.size()];
  10.     vars.toArray(all);
  11.     if (query.isDistinct()) {
  12.       traversal = traversal.dedup(all);
  13. if (query.isDistinct()) {
  14.   traversal = traversal.dedup();

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

  1. /**
  2.  * Constructor.
  3.  * 
  4.  * @param aggHandler The aggregate handler that wraps the query we want to handle.
  5.  */
  6. public SelectHandler(AggregationHandler aggHandler) {
  7.   this.query = aggHandler.getQuery();
  8.   this.aggHandler = aggHandler;
  9.   setDistinct(query.isDistinct());
  10.   setReduced(query.isReduced());
  11. }

代码示例来源：origin: apache/jena

  1. /**
  2.  * Constructor.
  3.  * 
  4.  * @param aggHandler The aggregate handler that wraps the query we want to handle.
  5.  */
  6. public SelectHandler(AggregationHandler aggHandler) {
  7.   this.query = aggHandler.getQuery();
  8.   this.aggHandler = aggHandler;
  9.   setDistinct(query.isDistinct());
  10.   setReduced(query.isReduced());
  11. }

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: apache/jena

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

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

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

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

  1. return parse(triples, sparql.getResultVars(), kb, sparql.isDistinct());

代码示例来源：origin: Galigator/openllet

  1. return parse(triples, sparql.getResultVars(), kb, sparql.isDistinct());

代码示例来源：origin: Galigator/openllet

  1. return parse(triples, sparql.getResultVars(), kb, sparql.isDistinct());

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

  1. boolean isDistinct = rawQuery.isDistinct();

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

  1. boolean isDistinct = rawQuery.isDistinct();

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. /**
  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: 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: 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();

代码示例来源：origin: apache/jena

  1. if ( query.isDistinct() )
  2.   op = OpDistinct.create(op) ;

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