Class DropNullFields

java.lang.Object
software.amazon.awssdk.services.glue.model.DropNullFields
All Implemented Interfaces:
Serializable, SdkPojo, ToCopyableBuilder<DropNullFields.Builder,DropNullFields>
@Generated("software.amazon.awssdk:codegen") public final class DropNullFields extends Object implements SdkPojo, Serializable, ToCopyableBuilder<DropNullFields.Builder,DropNullFields>

Specifies a transform that removes columns from the dataset if all values in the column are 'null'. By default, Glue Studio will recognize null objects, but some values such as empty strings, strings that are "null", -1 integers or other placeholders such as zeros, are not automatically recognized as nulls.

See Also:

  • Method Details

    • name

      public final String name()

      The name of the transform node.

      Returns:
      The name of the transform node.

    • hasInputs

      public final boolean hasInputs()
      For responses, this returns true if the service returned a value for the Inputs property. This DOES NOT check that the value is non-empty (for which, you should check the isEmpty() method on the property). This is useful because the SDK will never return a null collection or map, but you may need to differentiate between the service returning nothing (or null) and the service returning an empty collection or map. For requests, this returns true if a value for the property was specified in the request builder, and false if a value was not specified.

    • inputs

      public final List<String> inputs()

      The data inputs identified by their node names.

      Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.

      This method will never return null. If you would like to know whether the service returned this field (so that you can differentiate between null and empty), you can use the hasInputs() method.

      Returns:
      The data inputs identified by their node names.

    • nullCheckBoxList

      public final NullCheckBoxList nullCheckBoxList()

      A structure that represents whether certain values are recognized as null values for removal.

      Returns:
      A structure that represents whether certain values are recognized as null values for removal.

    • hasNullTextList

      public final boolean hasNullTextList()
      For responses, this returns true if the service returned a value for the NullTextList property. This DOES NOT check that the value is non-empty (for which, you should check the isEmpty() method on the property). This is useful because the SDK will never return a null collection or map, but you may need to differentiate between the service returning nothing (or null) and the service returning an empty collection or map. For requests, this returns true if a value for the property was specified in the request builder, and false if a value was not specified.

    • nullTextList

      public final List<NullValueField> nullTextList()

      A structure that specifies a list of NullValueField structures that represent a custom null value such as zero or other value being used as a null placeholder unique to the dataset.

      The DropNullFields transform removes custom null values only if both the value of the null placeholder and the datatype match the data.

      Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.

      This method will never return null. If you would like to know whether the service returned this field (so that you can differentiate between null and empty), you can use the hasNullTextList() method.

      Returns:
      A structure that specifies a list of NullValueField structures that represent a custom null value such as zero or other value being used as a null placeholder unique to the dataset.

      The DropNullFields transform removes custom null values only if both the value of the null placeholder and the datatype match the data.

    • toBuilder

      public DropNullFields.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<DropNullFields.Builder,DropNullFields>
      Returns:
      a builder for type T

    • builder

      public static DropNullFields.Builder builder()

    • serializableBuilderClass

      public static Class<? extends DropNullFields.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.