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

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

代码示例来源：origin: apache/jena

@Override
public void visitOrderBy(Query query)
{
  if ( query.getOrderBy() != null )
    x ^= query.getOrderBy().hashCode() ;
}

代码示例来源：origin: apache/jena

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

代码示例来源：origin: apache/jena

@Override
public void visitOrderBy(Query query) {
  if (query.hasOrderBy()) {
    for (SortCondition sc : query.getOrderBy())
      newQuery.addOrderBy(sc);
  }
}

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

@Override
public void visitOrderBy(Query query) {
  if ( query.hasOrderBy() ) {
    for (SortCondition sc : query.getOrderBy())
      newQuery.addOrderBy(sc) ;
  }
}

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

/**
   * <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">
   * <head>
   *  <variable name="s"/>
   *  <variable name="p"/>
   *  <variable name="o"/>
   * </head>
   * <results distinct="false" ordered="true">
   * @see org.springframework.batch.item.file.FlatFileHeaderCallback#writeHeader(java.io.Writer)
   */
  @Override
  public void writeHeader(Writer writer) throws IOException {
    PrintWriter pw = new PrintWriter(writer);
    pw.println("<?xml version=\"1.0\"?>") ;
    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\">");
    pw.println(" <head>") ;
    List<String> varNames = query.getResultVars();
    for(String varName : varNames) {
      pw.println("  <variable name=\"" + varName + "\" />") ;
    }
    pw.println(" </head>") ;
    pw.print(" <results distinct=\"" + query.isDistinct() + "\" " + "ordered=\"" + !CollectionUtils.isEmpty(query.getOrderBy()) + "\">");
    pw.flush();
  }
});

代码示例来源：origin: apache/jena

@Override
public void setVars(Map<Var, Node> values) {
  if (values.isEmpty()) {
    return;
  }
  ExprRewriter exprRewriter = new ExprRewriter(values);
  ExprList having = exprRewriter.rewrite(new ExprList(query
      .getHavingExprs()));
  List<SortCondition> orderBy = exprRewriter
      .rewriteSortConditionList(query.getOrderBy());
  VarExprList groupBy = exprRewriter.rewrite(query.getGroupBy());
  query.getHavingExprs().clear();
  query.getHavingExprs().addAll(having.getList());
  if (orderBy != null) {
    if (query.getOrderBy() == null) {
      for (SortCondition sc : orderBy) {
        query.addOrderBy(sc);
      }
    } else {
      query.getOrderBy().clear();
      query.getOrderBy().addAll(orderBy);
    }
  }
  query.getGroupBy().clear();
  query.getGroupBy().addAll(groupBy); 
}

代码示例来源：origin: apache/jena

/** Find the variables needed out of this query.
 * If we don't do sorting in-DB, then we need the ORDER BY variables as well. 
 * @param query
 */
public static List<Var> queryOutVars(Query query)
{
  // If part query, need all variables. 
  
  // Project variables
  List<Var> vars = toList(map(query.getResultVars().iterator(), Var::alloc)) ;
  
  // Add the ORDER BY variables
  List<SortCondition> orderConditions = query.getOrderBy() ;
  if ( orderConditions != null )
  {
    for ( SortCondition sc : orderConditions )
    {
      Set<Var> x = sc.getExpression().getVarsMentioned() ;
      for ( Var v :  x )
      {
        if ( ! vars.contains(v) )
          vars.add(v) ;
      }
    }
  }
  return vars ;
}

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

@Override
public void setVars(Map<Var, Node> values) {
  if (values.isEmpty()) {
    return;
  }
  ExprRewriter exprRewriter = new ExprRewriter(values);
  ExprList having = exprRewriter.rewrite(new ExprList(query
      .getHavingExprs()));
  List<SortCondition> orderBy = exprRewriter
      .rewriteSortConditionList(query.getOrderBy());
  VarExprList groupBy = exprRewriter.rewrite(query.getGroupBy());
  query.getHavingExprs().clear();
  query.getHavingExprs().addAll(having.getList());
  if (orderBy != null) {
    if (query.getOrderBy() == null) {
      for (SortCondition sc : orderBy) {
        query.addOrderBy(sc);
      }
    } else {
      query.getOrderBy().clear();
      query.getOrderBy().addAll(orderBy);
    }
  }
  query.getGroupBy().clear();
  query.getGroupBy().addAll(groupBy); 
}

代码示例来源：origin: apache/jena

@Override
public void visitOrderBy(Query query)
{
  if ( query.hasOrderBy() )
  {
    out.print("ORDER BY ") ;
    boolean first = true ;
    for (SortCondition sc : query.getOrderBy())
    {
      if ( ! first )
        out.print(" ") ;
      sc.format(fmtExpr, out) ;
      first = false ;
    }
    out.println() ;
  }
}

代码示例来源：origin: apache/jena

/**
 * Copy all the modifications from the Solution Modifier argument
 * @param solutionModifier The solution modifier to copy from.
 */
public void addAll(SolutionModifierHandler solutionModifier) {
  List<SortCondition> lst = solutionModifier.query.getOrderBy();
  if (lst != null) {
    for (SortCondition sc : lst) {
      query.addOrderBy(sc);
    }
  }
  query.getGroupBy().addAll(solutionModifier.query.getGroupBy());
  query.getHavingExprs().addAll(solutionModifier.query.getHavingExprs());
  query.setLimit(solutionModifier.query.getLimit());
  query.setOffset(solutionModifier.query.getOffset());
}

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

/**
 * Copy all the modifications from the Solution Modifier argument
 * @param solutionModifier The solution modifier to copy from.
 */
public void addAll(SolutionModifierHandler solutionModifier) {
  List<SortCondition> lst = solutionModifier.query.getOrderBy();
  if (lst != null) {
    for (SortCondition sc : lst) {
      query.addOrderBy(sc);
    }
  }
  query.getGroupBy().addAll(solutionModifier.query.getGroupBy());
  query.getHavingExprs().addAll(solutionModifier.query.getHavingExprs());
  query.setLimit(solutionModifier.query.getLimit());
  query.setOffset(solutionModifier.query.getOffset());
}

代码示例来源：origin: apache/jena

/** Transform a query using {@link ElementTransform} and {@link ExprTransform}.
 *  It is the responsibility of these transforms to transform to a legal SPARQL query.
 */ 
public static Query transform(Query query, ElementTransform transform, ExprTransform exprTransform) {
  Query q2 = QueryTransformOps.shallowCopy(query);
  // "Shallow copy with transform."
  transformVarExprList(q2.getProject(), exprTransform);
  transformVarExprList(q2.getGroupBy(), exprTransform);
  transformExprList(q2.getHavingExprs(), exprTransform);
  if (q2.getOrderBy() != null) {
    transformSortConditions(q2.getOrderBy(), exprTransform);
  }
  // ?? DOES NOT WORK: transformExprListAgg(q2.getAggregators(), exprTransform) ; ??
  // if ( q2.hasHaving() ) {}
  // if ( q2.hasAggregators() ) {}
  Element el = q2.getQueryPattern();
  Element el2 = ElementTransformer.transform(el, transform, exprTransform);
  // Top level is always a group.
  if (!(el2 instanceof ElementGroup)) {
    ElementGroup eg = new ElementGroup();
    eg.addElement(el2);
    el2 = eg;
  }
  q2.setQueryPattern(el2);
  return q2;
}

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

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

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

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

代码示例来源：origin: Galigator/openllet

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

代码示例来源：origin: Galigator/openllet

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

代码示例来源：origin: apache/jena

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

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