org.apache.flink.table.sources.tsextractors

Class ExistingField

java.lang.Object

org.apache.flink.table.sources.tsextractors.TimestampExtractor

org.apache.flink.table.sources.tsextractors.ExistingField

All Implemented Interfaces:

Serializable, org.apache.flink.table.descriptors.Descriptor, org.apache.flink.table.sources.FieldComputer<Long>

@PublicEvolving
public final class ExistingField
extends org.apache.flink.table.sources.tsextractors.TimestampExtractor

Converts an existing Long, Timestamp, or timestamp formatted java.lang.String field (e.g., "2018-05-28 12:34:56.000") into a rowtime attribute.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ExistingField(String field)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
String[]	getArgumentFields()
org.apache.flink.table.expressions.Expression	getExpression(org.apache.flink.table.expressions.ResolvedFieldReference[] fieldAccesses) Returns an Expression that casts a Long, Timestamp, or timestamp formatted String field (e.g., "2018-05-28 12:34:56.000") into a rowtime attribute.
int	hashCode()
Map<String,String>	toProperties()
void	validateArgumentFields(org.apache.flink.api.common.typeinfo.TypeInformation<?>[] argumentFieldTypes)

Methods inherited from class org.apache.flink.table.sources.tsextractors.TimestampExtractor

getReturnType

Methods inherited from class java.lang.Object

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

Constructor Detail

ExistingField

public ExistingField(String field)

Parameters:

field - The field to convert into a rowtime attribute.

Method Detail

getArgumentFields

public String[] getArgumentFields()

validateArgumentFields

public void validateArgumentFields(org.apache.flink.api.common.typeinfo.TypeInformation<?>[] argumentFieldTypes)

getExpression

public org.apache.flink.table.expressions.Expression getExpression(org.apache.flink.table.expressions.ResolvedFieldReference[] fieldAccesses)

Returns an Expression that casts a Long, Timestamp, or timestamp formatted String field (e.g., "2018-05-28 12:34:56.000") into a rowtime attribute.

toProperties

public Map<String,String> toProperties()

Specified by:

toProperties in interface org.apache.flink.table.descriptors.Descriptor

Overrides:

toProperties in class org.apache.flink.table.sources.tsextractors.TimestampExtractor

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object