software.amazon.awssdk.services.glue.model

Class Mapping

java.lang.Object

software.amazon.awssdk.services.glue.model.Mapping

All Implemented Interfaces:

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

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

Specifies the mapping of data property keys.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Mapping.Builder

Method Summary

Modifier and Type	Method and Description
static Mapping.Builder	builder()
List<Mapping>	children() Only applicable to nested data structures.
Boolean	dropped() If true, then the column is removed.
boolean	equals(Object obj)
boolean	equalsBySdkFields(Object obj)
List<String>	fromPath() The table or column to be modified.
String	fromType() The type of the data to be modified.
<T> Optional<T>	getValueForField(String fieldName, Class<T> clazz)
boolean	hasChildren() For responses, this returns true if the service returned a value for the Children property.
boolean	hasFromPath() For responses, this returns true if the service returned a value for the FromPath property.
int	hashCode()
List<SdkField<?>>	sdkFields()
static Class<? extends Mapping.Builder>	serializableBuilderClass()
Mapping.Builder	toBuilder()
String	toKey() After the apply mapping, what the name of the column should be.
String	toString() Returns a string representation of this object.
String	toType() The data type that the data is to be modified to.

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

toKey

public final String toKey()

After the apply mapping, what the name of the column should be. Can be the same as FromPath.

Returns:

After the apply mapping, what the name of the column should be. Can be the same as FromPath.

hasFromPath

public final boolean hasFromPath()

For responses, this returns true if the service returned a value for the FromPath 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.

fromPath

public final List<String> fromPath()

The table or column to be modified.

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 hasFromPath() method.

Returns:

The table or column to be modified.

fromType

public final String fromType()

The type of the data to be modified.

Returns:

The type of the data to be modified.

toType

public final String toType()

The data type that the data is to be modified to.

Returns:

The data type that the data is to be modified to.

dropped

public final Boolean dropped()

If true, then the column is removed.

Returns:

If true, then the column is removed.

hasChildren

public final boolean hasChildren()

For responses, this returns true if the service returned a value for the Children 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.

children

public final List<Mapping> children()

Only applicable to nested data structures. If you want to change the parent structure, but also one of its children, you can fill out this data strucutre. It is also Mapping, but its FromPath will be the parent's FromPath plus the FromPath from this structure.

For the children part, suppose you have the structure:

{ "FromPath": "OuterStructure", "ToKey": "OuterStructure", "ToType": "Struct", "Dropped": false, "Chidlren": [{ "FromPath": "inner", "ToKey": "inner", "ToType": "Double", "Dropped": false, }] }

You can specify a Mapping that looks like:

{ "FromPath": "OuterStructure", "ToKey": "OuterStructure", "ToType": "Struct", "Dropped": false, "Chidlren": [{ "FromPath": "inner", "ToKey": "inner", "ToType": "Double", "Dropped": false, }] }

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 hasChildren() method.

Returns:

Only applicable to nested data structures. If you want to change the parent structure, but also one of its children, you can fill out this data strucutre. It is also Mapping, but its FromPath will be the parent's FromPath plus the FromPath from this structure.

For the children part, suppose you have the structure:

{ "FromPath": "OuterStructure", "ToKey": "OuterStructure", "ToType": "Struct", "Dropped": false, "Chidlren": [{ "FromPath": "inner", "ToKey": "inner", "ToType": "Double", "Dropped": false, }] }

You can specify a Mapping that looks like:

{ "FromPath": "OuterStructure", "ToKey": "OuterStructure", "ToType": "Struct", "Dropped": false, "Chidlren": [{ "FromPath": "inner", "ToKey": "inner", "ToType": "Double", "Dropped": false, }] }

toBuilder

public Mapping.Builder toBuilder()

Specified by:

toBuilder in interface ToCopyableBuilder<Mapping.Builder,Mapping>

builder

public static Mapping.Builder builder()

serializableBuilderClass

public static Class<? extends Mapping.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