本文整理了Java中org.openrdf.query.algebra.Group类的一些代码示例，展示了Group类的具体用法。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。Group类的具体详情如下：
包路径：org.openrdf.query.algebra.Group
类名称：Group

Group介绍

[英]A tuple operator that groups tuples that have a specific set of equivalent variable bindings, and that can apply aggregate functions on the grouped results.
[中]一种元组运算符，用于对具有一组特定等效变量绑定的元组进行分组，并且可以对分组结果应用聚合函数。

代码示例

代码示例来源：origin: org.openrdf.sesame/sesame-queryalgebra-model

@Override
public Set<String> getAssuredBindingNames() {
  Set<String> bindingNames = new LinkedHashSet<String>();
  bindingNames.addAll(getGroupBindingNames());
  bindingNames.retainAll(getArg().getAssuredBindingNames());
  return bindingNames;
}

代码示例来源：origin: org.openrdf.sesame/sesame-queryalgebra-model

@Override
public boolean equals(Object other) {
  if (other instanceof Group && super.equals(other)) {
    Group o = (Group)other;
    return groupBindings.equals(o.getGroupBindingNames())
        && groupElements.equals(o.getGroupElements());
  }
  return false;
}

代码示例来源：origin: org.openrdf.sesame/sesame-queryalgebra-model

@Override
public Group clone() {
  Group clone = (Group)super.clone();
  clone.groupBindings = new LinkedHashSet<String>(getGroupBindingNames());
  clone.groupElements = new ArrayList<GroupElem>(getGroupElements().size());
  for (GroupElem ge : getGroupElements()) {
    clone.addGroupElement(ge.clone());
  }
  return clone;
}

代码示例来源：origin: org.openrdf.sesame/sesame-queryalgebra-model

@Override
public Set<String> getBindingNames() {
  Set<String> bindingNames = new LinkedHashSet<String>();
  bindingNames.addAll(getGroupBindingNames());
  bindingNames.addAll(getAggregateBindingNames());
  return bindingNames;
}

代码示例来源：origin: org.apache.rya/rya.pcj.fluo.app

final TupleExpr child = group.getArg();
final String childNodeId = nodeIds.getOrMakeId( child );
if(!group.getGroupBindingNames().isEmpty()) {
  groupByVariableOrder = new VariableOrder(group.getGroupBindingNames());
} else {
  groupByVariableOrder = new VariableOrder();
for(final GroupElem groupElem : group.getGroupElements()) {

代码示例来源：origin: apache/marmotta

@Override
public void meet(Group node) throws RuntimeException {
  for(String g : node.getGroupBindingNames()) {
    if(g.equals(needle)) {
      found = true;
    }
  }
  // don't recurse to the children, as this would project non-grouped elements
}

代码示例来源：origin: org.openrdf.sesame/sesame-spin

@Override
public void meet(Group node)
  throws RDFHandlerException
{
  // skip over GroupElem - leave this to the GroupVisitor later
  node.getArg().visit(this);
  hasGroup = true;
}

代码示例来源：origin: org.openrdf.sesame/sesame-queryparser-sparql

TupleExpr arg = group.getArg();
  group.setArg(extension);

代码示例来源：origin: org.openrdf.sesame/sesame-queryalgebra-evaluation

private Map<String, Aggregate> getAggregates()
  throws ValueExprEvaluationException, QueryEvaluationException
{
  if (this.aggregates == null) {
    this.aggregates = new LinkedHashMap<String, Aggregate>();
    for (GroupElem ge : group.getGroupElements()) {
      Aggregate create = create(ge.getOperator());
      if (create != null) {
        aggregates.put(ge.getName(), create);
      }
    }
  }
  return this.aggregates;
}

代码示例来源：origin: org.openrdf.sesame/sesame-spin

projElem.setAggregateOperatorInExpression(true);
if (group == null) {
  group = new Group();
  group.addGroupElement(new GroupElem(projName, op));

代码示例来源：origin: org.openrdf.elmo/elmo-repository

@Override
public void meet(Group node) {
  if (predicate.equals(SeRQO.GROUPNAMES)) {
    node.setGroupBindingNames((List<String>) model.get(object));
  } else if (predicate.equals(SeRQO.ELEMENTS)) {
    node.setGroupElements((List<GroupElem>) model.get(object));
  } else {
    super.meet(node);
  }
}

代码示例来源：origin: org.openrdf.sesame/sesame-queryparser-sparql

group = new Group(result);
        group.addGroupElement(new GroupElem(alias, operator));
        extension.setArg(group);
        group.addGroupElement(new GroupElem(anonVar.getName(), operator));
for (ProjectionElem elem : projElemList.getElements()) {
  if (!elem.hasAggregateOperatorInExpression()) {
    Set<String> groupNames = group.getBindingNames();

代码示例来源：origin: org.openrdf.sesame/sesame-queryparser-sparql

@Override
public Group visit(ASTGroupClause node, Object data)
  throws VisitorException
{
  TupleExpr tupleExpr = (TupleExpr)data;
  Group g = new Group(tupleExpr);
  int childCount = node.jjtGetNumChildren();
  List<String> groupBindingNames = new ArrayList<String>();
  for (int i = 0; i < childCount; i++) {
    String name = (String)node.jjtGetChild(i).jjtAccept(this, g);
    groupBindingNames.add(name);
  }
  g.setGroupBindingNames(groupBindingNames);
  return g;
}

代码示例来源：origin: org.openrdf.sesame/sesame-queryalgebra-model

public Group(TupleExpr arg, Iterable<String> groupBindingNames) {
  this(arg);
  setGroupBindingNames(groupBindingNames);
}

代码示例来源：origin: org.openrdf.sesame/sesame-queryparser-sparql

if (group == null) {
  group = new Group(tupleExpr);
if (group == null) {
  group = new Group(tupleExpr);

代码示例来源：origin: org.openrdf.sesame/sesame-spin

private void visitGroupBy(Resource groupby)
  throws OpenRDFException
{
  if (group == null) {
    group = new Group();
  }
  Iteration<? extends Resource, QueryEvaluationException> iter = Statements.listResources(groupby,
      store);
  while (iter.hasNext()) {
    Resource r = iter.next();
    ValueExpr groupByExpr = visitExpression(r);
    if (!(groupByExpr instanceof Var)) {
      // TODO
      // have to create an intermediate Var/Extension for the
      // expression
      throw new UnsupportedOperationException("TODO!");
    }
    group.addGroupBindingName(((Var)groupByExpr).getName());
  }
}

代码示例来源：origin: org.openrdf.sesame/sesame-queryparser-sparql

group.addGroupElement(ge);

代码示例来源：origin: org.openrdf.sesame/sesame-spin

group.setArg(projection.getArg());
projection.setArg(group);

代码示例来源：origin: org.openrdf.sesame/sesame-queryalgebra-evaluation

public Key(BindingSet bindingSet) {
  this.bindingSet = bindingSet;
  for (String name : group.getGroupBindingNames()) {
    Value value = bindingSet.getValue(name);
    if (value != null) {
      this.hash ^= value.hashCode();
    }
  }
}

代码示例来源：origin: org.openrdf.sesame/sesame-queryalgebra-evaluation

iter = strategy.evaluate(group.getArg(), parentBindings);