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

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

代码示例来源：origin: apache/jena

@Override
public void visitSelectResultForm(Query query)
{ 
  //query.setResultVars() ;
  if ( ! query.isQueryResultStar() )
    x^= query.getProject().hashCode() ;
}

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

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

代码示例来源：origin: stackoverflow.com

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

代码示例来源：origin: apache/jena

@Override
public void visitSelectResultForm(Query query1)
{ 
  check("Not both SELECT queries", query2.isSelectType()) ;
  check("DISTINCT modifier",
     query1.isDistinct() == query2.isDistinct()) ;
  check("SELECT *", query1.isQueryResultStar() == query2.isQueryResultStar()) ;
  check("Result variables",   query1.getProject(), query2.getProject() ) ;
}

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

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

代码示例来源：origin: TopQuadrant/shacl

@Override
public void startElement(ElementSubQuery el) {
  if(el.getQuery().isQueryResultStar()) {
    Set<Var> queryVars = new LinkedHashSet<>() ;
    PatternVars.vars(queryVars, el.getQuery().getQueryPattern()) ;
    for(String varName : preBoundVars) {
      if(!SH.currentShapeVar.getVarName().equals(varName) && !SH.shapesGraphVar.getVarName().equals(varName)) {
        if(!queryVars.contains(Var.alloc(varName))) {
          results.add("Sub-query must return all potentially pre-bound variables including $" + varName);
        }
      }
    }
  }
  else {
    VarExprList project = el.getQuery().getProject();
    for(String varName : preBoundVars) {
      if(!SH.currentShapeVar.getVarName().equals(varName) && !SH.shapesGraphVar.getVarName().equals(varName)) {
        if(!project.contains(Var.alloc(varName))) {
          results.add("Sub-query must return all potentially pre-bound variables including $" + varName);
        }
      }
    }
  }
}

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

@Override
public void startElement(ElementSubQuery el) {
  if(el.getQuery().isQueryResultStar()) {
    Set<Var> queryVars = new LinkedHashSet<>() ;
    PatternVars.vars(queryVars, el.getQuery().getQueryPattern()) ;
    for(String varName : preBoundVars) {
      if(!SH.currentShapeVar.getVarName().equals(varName) && !SH.shapesGraphVar.getVarName().equals(varName)) {
        if(!queryVars.contains(Var.alloc(varName))) {
          results.add("Sub-query must return all potentially pre-bound variables including $" + varName);
        }
      }
    }
  }
  else {
    VarExprList project = el.getQuery().getProject();
    for(String varName : preBoundVars) {
      if(!SH.currentShapeVar.getVarName().equals(varName) && !SH.shapesGraphVar.getVarName().equals(varName)) {
        if(!project.contains(Var.alloc(varName))) {
          results.add("Sub-query must return all potentially pre-bound variables including $" + varName);
        }
      }
    }
  }
}

代码示例来源：origin: apache/jena

@Override
public void visitDescribeResultForm(Query query)
{
  out.print("DESCRIBE ") ;
  
  if ( query.isQueryResultStar() )
    out.print("*") ;
  else
  {
    appendVarList(query, out, query.getResultVars()) ;
    if ( query.getResultVars().size() > 0 &&
       query.getResultURIs().size() > 0 )
      out.print(" ") ;
    appendURIList(query, out, query.getResultURIs()) ;
  }
  out.newline() ;
}

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

public Op getApplicableViews(Query query)
{
  Op op = Algebra.compile(query);
  op = Algebra.toQuadForm(op);
  op = ReplaceConstants.replace(op);
  //op = FilterPlacementOptimizer.optimize(op);
  // Add a projection if the query contains a result star
  // in order to filter out auto-generated variables
  if(query.isSelectType() && query.isQueryResultStar()) {
    List<Var> vars = query.getProjectVars();
    op = new OpProject(op, vars);
  }
  System.out.println("Quad form:" + op);
  //Set<OpSparqlViewPattern> result = getApplicableViews(op);
  //Set<OpSparqlViewPattern> result = getApplicableViews(op);
  //TransformFilterPlacement transformer = new TransformFilterPlacement();
  //op.(transformer);
  //op = Algebra.optimize(op);
  Op augmented = _getApplicableViews(op);
  //Op optimizedFilters = FilterPlacementOptimizer2.optimize(augmented);
  //System.out.println(optimizedFilters);
  Op result = augmented;
  //Op result = optimizedFilters;
  System.out.println(result);
  return result;
  //return getApp
}

代码示例来源：origin: apache/jena

if ( isQueryResultStar() )
  findAndAddNamedVars() ;
return ;
if ( isQueryResultStar() )
  findAndAddNamedVars() ;
return ;

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

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

代码示例来源：origin: apache/jena

private static void check(Query query, Collection<Var> vars)
{
  // Check any expressions are assigned to fresh variables.
  checkExprListAssignment(vars, query.getProject()) ;
  
  // Check for SELECT * GROUP BY
  // Legal in ARQ, not in SPARQL 1.1
  if ( ! Syntax.syntaxARQ.equals(query.getSyntax()) )
  {
    if ( query.isQueryResultStar() && query.hasGroupBy() )
      throw new QueryParseException("SELECT * not legal with GROUP BY", -1 , -1) ;
  }
  
  // Check any variable in an expression is in scope (if GROUP BY) 
  checkExprVarUse(query) ;
  
  // Check GROUP BY AS 
  // ENABLE
  if ( false && query.hasGroupBy() )
  {
    VarExprList exprList2 = query.getGroupBy() ;
    checkExprListAssignment(vars, exprList2) ;
  // CHECK 
  }
  
}

代码示例来源：origin: apache/jena

@Override
public void visitSelectResultForm(Query query)
{
  out.print("SELECT ") ;
  if ( query.isDistinct() )
    out.print("DISTINCT ") ;
  if ( query.isReduced() )
    out.print("REDUCED ") ;
  out.print(" ") ; //Padding
  
  if ( query.isQueryResultStar() )
    out.print("*") ;
  else
    appendNamedExprList(query, out, query.getProject()) ;
  out.newline() ;
}

代码示例来源：origin: apache/jena

@Override
public void startVisit(Query query) {
  newQuery.setSyntax(query.getSyntax());
  if (query.explicitlySetBaseURI())
    newQuery.setBaseURI(query.getPrologue().getResolver());
  newQuery.setQueryResultStar(query.isQueryResultStar());
  if (query.hasDatasetDescription()) {
    DatasetDescription desc = query.getDatasetDescription();
    for (String x : desc.getDefaultGraphURIs())
      newQuery.addGraphURI(x);
    for (String x : desc.getDefaultGraphURIs())
      newQuery.addNamedGraphURI(x);
  }
  // Aggregators.
  newQuery.getAggregators().addAll(query.getAggregators());
}

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

@Override
public void startVisit(Query query) {
  newQuery.setSyntax(query.getSyntax()) ;
  if ( query.explicitlySetBaseURI() )
    newQuery.setBaseURI(query.getPrologue().getResolver()) ;
  newQuery.setQueryResultStar(query.isQueryResultStar()) ;
  if ( query.hasDatasetDescription() ) {
    DatasetDescription desc = query.getDatasetDescription() ;
    for (String x : desc.getDefaultGraphURIs())
      newQuery.addGraphURI(x) ;
    for (String x : desc.getDefaultGraphURIs())
      newQuery.addNamedGraphURI(x) ;
  }
  // Aggregators.
  newQuery.getAggregators().addAll(query.getAggregators()) ;
}

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

/**
 * Add all the variables from the select handler variable.
 * 
 * @param selectHandler
 *            The select handler to copy the variables from.
 */
public void addAll(SelectHandler selectHandler) {
  setReduced(selectHandler.query.isReduced());
  setDistinct(selectHandler.query.isDistinct());
  query.setQueryResultStar(selectHandler.query.isQueryResultStar());
  VarExprList shProjectVars = selectHandler.query.getProject();
  VarExprList qProjectVars = query.getProject();
  for (Var var : shProjectVars.getVars()) {
    // make sure there are no duplicates
    if (!qProjectVars.contains(var)) {
      qProjectVars.add(var, shProjectVars.getExpr(var));
    }
  }
  aggHandler.addAll( selectHandler.aggHandler );
}

代码示例来源：origin: tarql/tarql

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

代码示例来源：origin: apache/jena

/**
 * Add all the variables from the select handler variable.
 * 
 * @param selectHandler
 *            The select handler to copy the variables from.
 */
public void addAll(SelectHandler selectHandler) {
  setReduced(selectHandler.query.isReduced());
  setDistinct(selectHandler.query.isDistinct());
  query.setQueryResultStar(selectHandler.query.isQueryResultStar());
  VarExprList shProjectVars = selectHandler.query.getProject();
  VarExprList qProjectVars = query.getProject();
  for (Var var : shProjectVars.getVars()) {
    // make sure there are no duplicates
    if (!qProjectVars.contains(var)) {
      qProjectVars.add(var, shProjectVars.getExpr(var));
    }
  }
  aggHandler.addAll( selectHandler.aggHandler );
}

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

public static long countQuery(Query query, QueryExecutionFactory qef) {
  boolean needsWrapping = !query.getGroupBy().isEmpty() || !query.getAggregators().isEmpty();
  boolean useCountDistinct = !needsWrapping && query.isDistinct() && query.isQueryResultStar();

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