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:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static interface DropNullFields.Builder

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static DropNullFields.Builder`	`builder()`
`boolean`	`equals(Object obj)`
`boolean`	`equalsBySdkFields(Object obj)`
`<T> Optional<T>`	`getValueForField(String fieldName, Class<T> clazz)`
`int`	`hashCode()`
`boolean`	`hasInputs()`	For responses, this returns true if the service returned a value for the Inputs property.
`boolean`	`hasNullTextList()`	For responses, this returns true if the service returned a value for the NullTextList property.
`List<String>`	`inputs()`	The data inputs identified by their node names.
`String`	`name()`	The name of the transform node.
`NullCheckBoxList`	`nullCheckBoxList()`	A structure that represents whether certain values are recognized as null values for removal.
`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.
`List<SdkField<?>>`	`sdkFields()`
`static Class<? extends DropNullFields.Builder>`	`serializableBuilderClass()`
`DropNullFields.Builder`	`toBuilder()`
`String`	`toString()`	Returns a string representation of this object.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

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

- Method Detail
  - 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()
```
    Specified by:
    
    toBuilder in interface ToCopyableBuilder<DropNullFields.Builder,DropNullFields>
  - 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)
```
    Specified by:
    
    equalsBySdkFields in interface SdkPojo
  - 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

Class DropNullFields

Nested Class Summary

Method Summary

Methods inherited from class java.lang.Object

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

Method Detail

name

hasInputs

inputs

nullCheckBoxList

hasNullTextList

nullTextList

toBuilder

builder

serializableBuilderClass

hashCode

equals

equalsBySdkFields

toString

getValueForField

sdkFields