software.amazon.awssdk.services.glue.model

Class Classifier

java.lang.Object

software.amazon.awssdk.services.glue.model.Classifier

All Implemented Interfaces:

Serializable, SdkPojo, ToCopyableBuilder<Classifier.Builder,Classifier>

@Generated(value="software.amazon.awssdk:codegen")
public final class Classifier
extends Object
implements SdkPojo, Serializable, ToCopyableBuilder<Classifier.Builder,Classifier>

Classifiers are triggered during a crawl task. A classifier checks whether a given file is in a format it can handle. If it is, the classifier creates a schema in the form of a StructType object that matches that data format.

You can use the standard classifiers that Glue provides, or you can write your own classifiers to best categorize your data sources and specify the appropriate schemas to use for them. A classifier can be a grok classifier, an XML classifier, a JSON classifier, or a custom CSV classifier, as specified in one of the fields in the Classifier object.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Classifier.Builder

Method Summary

Modifier and Type	Method and Description
static Classifier.Builder	builder()
CsvClassifier	csvClassifier() A classifier for comma-separated values (CSV).
boolean	equals(Object obj)
boolean	equalsBySdkFields(Object obj) Indicates whether some other object is "equal to" this one by SDK fields.
<T> Optional<T>	getValueForField(String fieldName, Class<T> clazz)
GrokClassifier	grokClassifier() A classifier that uses grok.
int	hashCode()
JsonClassifier	jsonClassifier() A classifier for JSON content.
List<SdkField<?>>	sdkFields()
static Class<? extends Classifier.Builder>	serializableBuilderClass()
Classifier.Builder	toBuilder() Take this object and create a builder that contains all of the current property values of this object.
String	toString() Returns a string representation of this object.
XMLClassifier	xmlClassifier() A classifier for XML content.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface software.amazon.awssdk.utils.builder.ToCopyableBuilder

copy

Method Detail

grokClassifier

public final GrokClassifier grokClassifier()

A classifier that uses grok.

Returns:

A classifier that uses grok.

xmlClassifier

public final XMLClassifier xmlClassifier()

A classifier for XML content.

Returns:

A classifier for XML content.

jsonClassifier

public final JsonClassifier jsonClassifier()

A classifier for JSON content.

Returns:

A classifier for JSON content.

csvClassifier

public final CsvClassifier csvClassifier()

A classifier for comma-separated values (CSV).

Returns:

A classifier for comma-separated values (CSV).

toBuilder

public Classifier.Builder toBuilder()

Description copied from interface: ToCopyableBuilder

Take this object and create a builder that contains all of the current property values of this object.

Specified by:

toBuilder in interface ToCopyableBuilder<Classifier.Builder,Classifier>

Returns:

a builder for type T

builder

public static Classifier.Builder builder()

serializableBuilderClass

public static Class<? extends Classifier.Builder> serializableBuilderClass()

hashCode

public final int hashCode()

Overrides:

hashCode in class Object

equals

public final boolean equals(Object obj)

Overrides:

equals in class Object

equalsBySdkFields

public final boolean equalsBySdkFields(Object obj)

Description copied from interface: SdkPojo

Indicates whether some other object is "equal to" this one by SDK fields. An SDK field is a modeled, non-inherited field in an SdkPojo class, and is generated based on a service model.

If an SdkPojo class does not have any inherited fields, equalsBySdkFields and equals are essentially the same.

Specified by:

equalsBySdkFields in interface SdkPojo

Parameters:

obj - the object to be compared with

Returns:

true if the other object equals to this object by sdk fields, false otherwise.

toString

public final String toString()

Returns a string representation of this object. This is useful for testing and debugging. Sensitive data will be redacted from this string using a placeholder value.

Overrides:

toString in class Object

getValueForField

public final <T> Optional<T> getValueForField(String fieldName,
                                              Class<T> clazz)

sdkFields

public final List<SdkField<?>> sdkFields()

Specified by:

sdkFields in interface SdkPojo

Returns:

List of SdkField in this POJO. May be empty list but should never be null.