org.apache.flink.table.expressions

Class TableReferenceExpression

java.lang.Object

org.apache.flink.table.expressions.TableReferenceExpression

All Implemented Interfaces:

Expression, ResolvedExpression

@PublicEvolving
public final class TableReferenceExpression
extends Object
implements ResolvedExpression

Expression that references another table.

This is a pure API expression that is translated into uncorrelated sub-queries by the planner.

Method Summary

Modifier and Type	Method and Description
<R> R	accept(ExpressionVisitor<R> visitor)
String	asSummaryString() Returns a string that summarizes this expression for printing to a console.
boolean	equals(Object o)
List<Expression>	getChildren()
String	getName()
DataType	getOutputDataType() Returns the data type of the computation result.
QueryOperation	getQueryOperation()
List<ResolvedExpression>	getResolvedChildren()
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.flink.table.expressions.ResolvedExpression

asSerializableString

Method Detail

getName

public String getName()

getQueryOperation

public QueryOperation getQueryOperation()

getOutputDataType

public DataType getOutputDataType()

Description copied from interface: ResolvedExpression

Returns the data type of the computation result.

Specified by:

getOutputDataType in interface ResolvedExpression

getResolvedChildren

public List<ResolvedExpression> getResolvedChildren()

Specified by:

getResolvedChildren in interface ResolvedExpression

asSummaryString

public String asSummaryString()

Description copied from interface: Expression

Returns a string that summarizes this expression for printing to a console. An implementation might skip very specific properties.

Specified by:

asSummaryString in interface Expression

Returns:

summary string of this expression for debugging purposes

getChildren

public List<Expression> getChildren()

Specified by:

getChildren in interface Expression

accept

public <R> R accept(ExpressionVisitor<R> visitor)

Specified by:

accept in interface Expression

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object