Class Classifier

java.lang.Object
software.amazon.awssdk.services.glue.model.Classifier
All Implemented Interfaces:
Serializable, SdkPojo, ToCopyableBuilder<Classifier.Builder,Classifier>
@Generated("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:

  • Method Details

    • 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.

    • sdkFieldNameToField

      public final Map<String,SdkField<?>> sdkFieldNameToField()
      Specified by:
      sdkFieldNameToField in interface SdkPojo
      Returns:
      The mapping between the field name and its corresponding field.