case class ColumnDesc(fieldName: String, fieldExtractor: String) extends Descriptor with Product with Serializable
Column Descriptor
- fieldName
the field name or method name of this column field
- fieldExtractor
the key of a ColumnExtractor instance
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new
ColumnDesc(fieldName: String, fieldExtractor: String)
- fieldName
the field name or method name of this column field
- fieldExtractor
the key of a ColumnExtractor instance
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error(v: AnyRef, e: Throwable): String
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def
extract(v: AnyRef): Seq[String]
Apply the field Extractor to the field value to extract key information we want to represents a table, column list, etc.
Apply the field Extractor to the field value to extract key information we want to represents a table, column list, etc.
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- ColumnDesc → Descriptor
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val
fieldExtractor: String
The key that points the Extractor to for the field, which extracts key information we want to represents a table, column list, etc.
The key that points the Extractor to for the field, which extracts key information we want to represents a table, column list, etc.
- Definition Classes
- ColumnDesc → Descriptor
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val
fieldName: String
Describes the field name, such as a table field name in the spark logical plan.
Describes the field name, such as a table field name in the spark logical plan.
- returns
the database object field name
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- ColumnDesc → Descriptor
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finalize(): Unit
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