Package org.apache.flink.table.operations

Interface QueryOperationVisitor<T>

All Known Implementing Classes:

QueryOperationDefaultVisitor

@Internal
public interface QueryOperationVisitor<T>

Class that implements visitor pattern. It allows type safe logic on top of tree of QueryOperations.

Method Summary

Modifier and Type	Method	Description
T	visit(AggregateQueryOperation aggregation)
T	visit(CalculatedQueryOperation calculatedTable)
T	visit(DistinctQueryOperation distinct)
T	visit(FilterQueryOperation filter)
T	visit(JoinQueryOperation join)
T	visit(ProjectQueryOperation projection)
T	visit(QueryOperation other)
T	visit(SetQueryOperation setOperation)
T	visit(SortQueryOperation sort)
T	visit(SourceQueryOperation catalogTable)
<U> T	visit(TableSourceQueryOperation<U> tableSourceTable)
T	visit(ValuesQueryOperation values)
T	visit(WindowAggregateQueryOperation windowAggregate)

Method Details

visit

T visit(ProjectQueryOperation projection)

visit

T visit(AggregateQueryOperation aggregation)

visit

T visit(WindowAggregateQueryOperation windowAggregate)

visit

T visit(JoinQueryOperation join)

visit

T visit(SetQueryOperation setOperation)

visit

T visit(FilterQueryOperation filter)

visit

T visit(DistinctQueryOperation distinct)

visit

T visit(SortQueryOperation sort)

visit

T visit(CalculatedQueryOperation calculatedTable)

visit

T visit(SourceQueryOperation catalogTable)

visit

T visit(ValuesQueryOperation values)

visit

<U> T visit(TableSourceQueryOperation<U> tableSourceTable)

visit

T visit(QueryOperation other)