本文整理了Java中org.apache.jena.sparql.engine.binding.Binding.contains()方法的一些代码示例，展示了Binding.contains()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。Binding.contains()方法的具体详情如下：
包路径：org.apache.jena.sparql.engine.binding.Binding
类名称：Binding
方法名：contains

Binding.contains介绍

[英]Test whether a variable is bound to some object
[中]测试变量是否绑定到某个对象

代码示例

代码示例来源：origin: apache/jena

@Override
public boolean contains(Var var)
{
  return binding.contains(var) ;
}

代码示例来源：origin: apache/jena

private boolean hasCommonVars(Binding left, Binding right)
{
  for ( Var v: commonVars )
  {
    if ( left.contains(v) && right.contains(v) )
      return true ;
  }
  return false;
}

代码示例来源：origin: apache/jena

private static boolean needVars(List<Var> vars, Binding binding)
{
  if ( vars == null ) return true ;
  for ( Var v : vars )
  {
    if ( ! binding.contains(v) )
      return true ;
  }
  return false ;
}

代码示例来源：origin: apache/jena

public QueryIterExtendByVar(Binding binding, Var var, Iterator<Node> members, ExecutionContext execCxt) {
  super(execCxt);
  if ( true ) { // Assume not too costly.
    if ( binding.contains(var) )
      throw new ARQInternalErrorException("Var " + var + " already set in " + binding);
  }
  this.binding = binding;
  this.var = var;
  this.members = members;
}

代码示例来源：origin: apache/jena

@Override
protected boolean _contains(String varName)
{
  return binding.contains(Var.alloc(varName)) ;
}

代码示例来源：origin: apache/jena

public static boolean disjoint(Binding binding1, Binding binding2)
  {
    Iterator<Var> iterVar1 = binding1.vars() ;
    for ( ; iterVar1.hasNext() ; )
    {
      Var v = iterVar1.next() ; 
      if ( binding2.contains(v) )
        return false ;
    }
    return true ;
  }
}

代码示例来源：origin: apache/jena

/** Test whether a name is bound to some object */
@Override
public boolean contains(Var var) {
  if ( contains1(var) )
    return true;
  if ( parent == null )
    return false;
  return parent.contains(var);
}

代码示例来源：origin: apache/jena

@Override
protected boolean contains1(Var var) {
  return accept(var) && binding.contains(var) ;
}

代码示例来源：origin: rdfhdt/hdt-java

private List<Var> calcVars()
{
  List<Var> vars = new ArrayList<>(4) ;
  // Only if not in parent.
  // A (var/value) binding may have been copied down to record it's HDTId.  
  
  Binding b = idBinding.getParentBinding() ;
  
  for ( Var v : idBinding )
  {
    if ( b == null || ! b.contains(v) )
      vars.add(v) ;
  }
  return vars ;
}

代码示例来源：origin: apache/jena

private List<Var> calcVars()
{
  List<Var> vars = new ArrayList<>(4) ;
  // Only if not in parent.
  // A (var/value) binding may have been copied down to record it's NodeId.  
  
  Binding b = idBinding.getParentBinding() ;
  
  Iterator<Var> iter = idBinding.iterator() ;
  for ( Var v : idBinding )
  {
    if ( b == null || ! b.contains(v) )
      vars.add(v) ;
  }
  return vars ;
}

代码示例来源：origin: apache/jena

private List<Var> calcVars()
{
  List<Var> vars = new ArrayList<>(4) ;
  // Only if not in parent.
  // A (var/value) binding may have been copied down to record it's NodeId.  
  
  Binding b = idBinding.getParentBinding() ;
  
  Iterator<Var> iter = idBinding.iterator() ;
  for ( Var v : idBinding )
  {
    if ( b == null || ! b.contains(v) )
      vars.add(v) ;
  }
  return vars ;
}

代码示例来源：origin: apache/jena

public static Binding merge(Binding bindingLeft, Binding bindingRight)
{
  // Test to see if compatible: Iterate over variables in left
  boolean matches = compatible(bindingLeft, bindingRight) ;
  
  if ( ! matches ) 
    return null ;
  
  // If compatible, merge. Iterate over variables in right but not in left.
  BindingMap b = BindingFactory.create(bindingLeft) ;
  for ( Iterator<Var> vIter = bindingRight.vars() ; vIter.hasNext() ; )
  {
    Var v = vIter.next();
    Node n = bindingRight.get(v) ;
    if ( ! bindingLeft.contains(v) )
      b.add(v, n) ;
  }
  return b ;
}

代码示例来源：origin: apache/jena

@Override
public Binding accept(Binding binding) {
  if ( binding.contains(var) ) {
    if ( mustBeNewVar )
      throw new QueryExecException("Already set: " + var);
    Node n2 = binding.get(var) ;
    if ( ! n2.equals(node) )
      // And filter out.
      return null ;
    else
      // Already in the binding with the value -> nothing to do. 
      return binding ;
  }
  return BindingFactory.binding(binding, var, node) ;
}

代码示例来源：origin: apache/jena

@Override
public Expr copySubstitute(Binding binding)
{
  Var v = varNode ;  
  if ( binding == null || !binding.contains(v) )
    return new ExprVar(v) ;
  Node v2 = binding.get(v);
  return v2.isVariable() ? new ExprVar(v2) : eval(binding, null) ;
}

代码示例来源：origin: SmartDataAnalytics/Sparqlify

Set<Var> exprVars = expr.getVarsMentioned();
for(Var var : exprVars) {
  if(!binding.contains(var)) {
    allBound = false;
    break;

代码示例来源：origin: apache/jena

@Override
public NodeValue evalSpecial(Binding binding, FunctionEnv env) { 
  // See alse ExprLib.evalOrNull.
  // This code predates that; it handles exceptions 
  // slightly differently (VariableNotBoundException not
  // a general ExprEvalException).
  
  if ( expr.isConstant() )
    // The case of the variable having been substituted for a constant.
    // Note: this has often been optimized away by constant folding 
    // (ExprTransformConstantFold) which called eval(NodeValue x) -> TRUE.
    return NodeValue.TRUE ;
  
  if ( expr.isVariable() )
    // The case of the expr being a single variable. 
    return NodeValue.booleanReturn(binding.contains(expr.asVar())) ; 
  
  // General expression. This case can't be written in SPARQL
  // but we keep the code general in case some optimziation rewrite
  // or algebra expression uses the generalized feature.
  try {
    expr.eval(binding, env) ;
    return NodeValue.TRUE ;
  } catch (VariableNotBoundException ex) {
    return NodeValue.FALSE ;
  }
}

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

if(expr != null && (!expr.isVariable() || binding.contains(expr.asVar()))) {
  NodeValue x = expr.eval(binding, env);
  if(x != null) {

代码示例来源：origin: apache/jena

private void testErr(String qsAgg, DatasetGraph ds, Syntax syntax) {
  Query query = buildGroupBy(qsAgg, syntax) ;
  try ( QueryExecution qExec = QueryExecutionFactory.create(query, DatasetFactory.wrap(ds)) ) {
    ResultSet rs = qExec.execSelect() ;
    assertTrue(rs.getResultVars().contains("X")) ;
    Binding b = rs.nextBinding() ;
    assertFalse(b.contains(Var.alloc("X"))) ;
  }
}

代码示例来源：origin: apache/jena

@Override
public QueryIterator exec(Binding binding, Node name, ExprList args, ExecutionContext execCxt)
{
  // Eval if possible.
  ExprList evalArgs = new ExprList() ;
  for (Expr e : args)
  {
    if ( e.isVariable() )
    {
      Var v = e.getExprVar().asVar() ;
      // Special case - allow unevaluated variables.
      if ( binding.contains(v) )
        evalArgs.add(e.eval(binding, execCxt)) ;
      else
        evalArgs.add(e) ;
    }
    else
    {
      NodeValue x = e.eval(binding, execCxt) ;
      evalArgs.add(x) ;
    }
  }
  return execEval(binding, evalArgs, execCxt) ;
}

代码示例来源：origin: apache/jena

private void testEmptyNoGroupBy(String qsAgg, DatasetGraph ds, Syntax syntax) {
  Query query = buildNoGroupBy(qsAgg, syntax) ;
  try ( QueryExecution qExec = QueryExecutionFactory.create(query, DatasetFactory.wrap(ds)) ) {
    ResultSet rs = qExec.execSelect() ;
    assertTrue(rs.hasNext()) ;
    assertTrue(rs.getResultVars().contains("X")) ;
    Binding b = rs.nextBinding() ;
    assertFalse(b.contains(Var.alloc("X"))) ;
  }
}