ExistingField (Flink : Table : API Java 2.1.0 API)

java.lang.Object
- org.apache.flink.table.legacy.sources.tsextractors.TimestampExtractor
- - org.apache.flink.table.legacy.sources.tsextractors.ExistingField

All Implemented Interfaces:

Serializable, org.apache.flink.table.legacy.descriptors.Descriptor, org.apache.flink.table.legacy.sources.FieldComputer<Long>
```
@Deprecated
@Internal
public final class ExistingField
extends org.apache.flink.table.legacy.sources.tsextractors.TimestampExtractor
```
Deprecated.
This class will not be supported in the new source design around DynamicTableSource. See FLIP-95 for more information.

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 Description

ExistingField(String field)
Deprecated.

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`boolean`	`equals(Object o)`	Deprecated.
`String[]`	`getArgumentFields()`	Deprecated.
`org.apache.flink.table.expressions.Expression`	`getExpression(org.apache.flink.table.expressions.ResolvedFieldReference[] fieldAccesses)`	Deprecated. 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()`	Deprecated.
`Map<String,String>`	`toProperties()`	Deprecated.
`void`	`validateArgumentFields(org.apache.flink.api.common.typeinfo.TypeInformation<?>[] argumentFieldTypes)`	Deprecated.

Methods inherited from class org.apache.flink.table.legacy.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)
```
    Deprecated.
    
    Parameters:
    
    field - The field to convert into a rowtime attribute.
- Method Detail
  - getArgumentFields
```
public String[] getArgumentFields()
```
    Deprecated.
  - validateArgumentFields
```
public void validateArgumentFields(org.apache.flink.api.common.typeinfo.TypeInformation<?>[] argumentFieldTypes)
```
    Deprecated.
  - getExpression
```
public org.apache.flink.table.expressions.Expression getExpression(org.apache.flink.table.expressions.ResolvedFieldReference[] fieldAccesses)
```
    Deprecated.
    
    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()
```
    Deprecated.
    
    Specified by:
    
    toProperties in interface org.apache.flink.table.legacy.descriptors.Descriptor
    
    Overrides:
    
    toProperties in class org.apache.flink.table.legacy.sources.tsextractors.TimestampExtractor
  - equals
```
public boolean equals(Object o)
```
    Deprecated.
    
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Deprecated.
    
    Overrides:
    
    hashCode in class Object