org.apache.flink.api.table.plan

Class Filter

java.lang.Object

org.apache.flink.api.table.trees.TreeNode<PlanNode>

org.apache.flink.api.table.plan.PlanNode

org.apache.flink.api.table.plan.Filter

All Implemented Interfaces:

Serializable, scala.Equals, scala.Product

public class Filter
extends PlanNode
implements scala.Product, scala.Serializable

Operation that filters out elements that do not match the predicate expression.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Filter(PlanNode input, Expression predicate)

Method Summary

Modifier and Type	Method and Description
scala.collection.Seq<PlanNode>	children() List of child nodes that should be considered when doing transformations.
PlanNode	input()
scala.collection.Seq<scala.Tuple2<String,TypeInformation<?>>>	outputFields()
Expression	predicate()
String	toString()

Methods inherited from class org.apache.flink.api.table.trees.TreeNode

exists, fastEquals, makeCopy, transformChildrenPost, transformChildrenPre, transformPost, transformPre

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface scala.Product

productArity, productElement, productIterator, productPrefix

Methods inherited from interface scala.Equals

canEqual, equals

Constructor Detail

Filter

public Filter(PlanNode input,
              Expression predicate)

Method Detail

input

public PlanNode input()

predicate

public Expression predicate()

children

public scala.collection.Seq<PlanNode> children()

Description copied from class: TreeNode

List of child nodes that should be considered when doing transformations. Other values in the Product will not be transformed, only handed through.

Specified by:

children in class TreeNode<PlanNode>

outputFields

public scala.collection.Seq<scala.Tuple2<String,TypeInformation<?>>> outputFields()

Specified by:

outputFields in class PlanNode

toString

public String toString()

Overrides:

toString in class Object