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org.apache.spark.sql.catalyst.expressions

FileSourceMetadataAttribute

object FileSourceMetadataAttribute

The internal representation of the FileSourceMetadataAttribute, it sets metadata_col and file_source_metadata_col to true in AttributeReference's metadata. This is a super type of FileSourceConstantMetadataAttribute and FileSourceGeneratedMetadataAttribute.

- apply() will create a file source metadata attribute reference - unapply() will check if an attribute reference is any file source metadata attribute reference

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  1. final def !=(arg0: Any): Boolean
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  2. final def ##(): Int
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  4. val FILE_SOURCE_METADATA_COL_ATTR_KEY: String
  5. def apply(name: String, dataType: DataType, nullable: Boolean = false): AttributeReference
  6. final def asInstanceOf[T0]: T0
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  7. def cleanupFileSourceMetadataInformation(attr: Attribute): Attribute

    Cleanup the internal metadata information of an attribute if it is a FileSourceConstantMetadataAttribute or FileSourceGeneratedMetadataAttribute.

  8. def clone(): AnyRef
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  9. final def eq(arg0: AnyRef): Boolean
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  19. def toString(): String
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  20. def unapply(attr: AttributeReference): Option[AttributeReference]

    Matches if attr is any File source metadata attribute (including constant and generated).

  21. final def wait(): Unit
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