Package software.amazon.awssdk.services.glue.model

Class Mapping

    • 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, }] }

      • 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

      • 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)