Package org.apache.flink.types

Class ColumnList

java.lang.Object

org.apache.flink.types.ColumnList

All Implemented Interfaces:

Serializable

@PublicEvolving
public final class ColumnList
extends Object
implements Serializable

Represents a list of columns.

This type is the return type of calls to DESCRIPTOR(`c0`, `c1`). The type is intended to be used in arguments of ProcessTableFunctions.

See Also:

• DataTypes.DESCRIPTOR()
• Serialized Form

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
List<DataType>	getDataTypes()	Returns a list of data types (if available).
List<String>	getNames()	Returns a list of column names.
int	hashCode()
static ColumnList	of(String... names)
static ColumnList	of(List<String> names)
static ColumnList	of(List<String> names, List<DataType> dataTypes)
String	toString()

Methods inherited from class java.lang.Object

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

Method Details

of

public static ColumnList of(List<String> names,
 List<DataType> dataTypes)

of

public static ColumnList of(List<String> names)

of

public static ColumnList of(String... names)

getNames

public List<String> getNames()

Returns a list of column names.

For example, it returns [a, b, c] for function calls like DESCRIPTOR(a INT, b STRING, c BOOLEAN) or DESCRIPTOR(a, b, c).

getDataTypes

public List<DataType> getDataTypes()

Returns a list of data types (if available).

For example, it returns [INT, STRING, BOOLEAN] for function calls like DESCRIPTOR(a INT, b STRING, c BOOLEAN).

Note: The list might be empty if only names were passed to the descriptor function like DESCRIPTOR(a, b, c). Thus, the list is either empty or has the same number of elements as getNames().

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object