## Uses of Class
org.eclipse.rdf4j.query.algebra.Union

- Packages that use Union
  Package | Description
  --- | ---
  org.eclipse.rdf4j.federated.optimizer |
  org.eclipse.rdf4j.federated.util |
  org.eclipse.rdf4j.query.algebra | Abstract Query Algebra model.
  org.eclipse.rdf4j.query.algebra.evaluation.impl |
  org.eclipse.rdf4j.query.algebra.helpers |
  org.eclipse.rdf4j.queryrender.sparql |
  org.eclipse.rdf4j.sail.federation.evaluation |
  org.eclipse.rdf4j.sail.federation.optimizers |

- - ### Uses of Union in org.eclipse.rdf4j.federated.optimizer

    Methods in org.eclipse.rdf4j.federated.optimizer with parameters of type Union
    Modifier and Type | Method and Description
    --- | ---
    `protected void` | UnionOptimizer.`handleUnionArgs(Union union, List<TupleExpr> args)` Add the union arguments to the args list, includes a recursion step for nested unions.
    `void` | UnionOptimizer.`meet(Union union)`
    `void` | GenericInfoOptimizer.`meet(Union union)`

  - ### Uses of Union in org.eclipse.rdf4j.federated.util

    Methods in org.eclipse.rdf4j.federated.util that return Union
    Modifier and Type | Method and Description
    --- | ---
    `protected static Union` | QueryAlgebraUtil.`constructInnerUnion(StatementPattern stmt, int outerID, Set<String> varNames, List<BindingSet> bindings)`

  - ### Uses of Union in org.eclipse.rdf4j.query.algebra

    Methods in org.eclipse.rdf4j.query.algebra that return Union
    Modifier and Type | Method and Description
    --- | ---
    `Union` | Union.`clone()`

    Methods in org.eclipse.rdf4j.query.algebra with parameters of type Union
    Modifier and Type | Method and Description
    --- | ---
    `void` | QueryModelVisitor.`meet(Union node)`

  - ### Uses of Union in org.eclipse.rdf4j.query.algebra.evaluation.impl

    Methods in org.eclipse.rdf4j.query.algebra.evaluation.impl with parameters of type Union
    Modifier and Type | Method and Description
    --- | ---
    `CloseableIteration<BindingSet,QueryEvaluationException>` | StrictEvaluationStrategy.`evaluate(Union union, BindingSet bindings)`
    `void` | QueryModelNormalizer.`meet(Union union)`
    `void` | QueryModelPruner.TreeSanitizer.`meet(Union union)`
    `void` | IterativeEvaluationOptimizer.IEOVisitor.`meet(Union union)`
    `void` | FilterOptimizer.FilterRelocator.`meet(Union union)`

  - ### Uses of Union in org.eclipse.rdf4j.query.algebra.helpers

    Methods in org.eclipse.rdf4j.query.algebra.helpers with parameters of type Union
    Modifier and Type | Method and Description
    --- | ---
    `void` | AbstractQueryModelVisitor.`meet(Union node)`

  - ### Uses of Union in org.eclipse.rdf4j.queryrender.sparql

    Methods in org.eclipse.rdf4j.queryrender.sparql with parameters of type Union
    Modifier and Type | Method and Description
    --- | ---
    `void` | SparqlTupleExprRenderer.`meet(Union theOp)`
    `void` | ContextCollector.`meet(Union theOp)`

  - ### Uses of Union in org.eclipse.rdf4j.sail.federation.evaluation

    Methods in org.eclipse.rdf4j.sail.federation.evaluation with parameters of type Union
    Modifier and Type | Method and Description
    --- | ---
    `CloseableIteration<BindingSet,QueryEvaluationException>` | FederationStrategy.`evaluate(Union union, BindingSet bindings)`

  - ### Uses of Union in org.eclipse.rdf4j.sail.federation.optimizers

    Methods in org.eclipse.rdf4j.sail.federation.optimizers with parameters of type Union
    Modifier and Type | Method and Description
    --- | ---
    `void` | QueryModelPruner.TreeSanitizer.`meet(Union union)`
    `void` | FederationJoinOptimizer.`meet(Union node)` Deprecated.

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