Interface SchemaNode

All Known Implementing Classes:
SchemaNode.GroupNode, SchemaNode.PrimitiveNode
public sealed interface SchemaNode permits SchemaNode.PrimitiveNode, SchemaNode.GroupNode
Tree-based representation of Parquet schema for nested data support. Each node represents either a primitive column or a group (struct/list/map).
See Also:

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Interface
    Description
    static final record 
    SchemaNode.GroupNode
    Group node representing a struct, list, or map.
    static final record 
    SchemaNode.PrimitiveNode
    Primitive leaf node representing an actual data column.

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    maxDefinitionLevel()
    Returns the maximum definition level, computed from the schema hierarchy.
    int
    maxRepetitionLevel()
    Returns the maximum repetition level, computed from the schema hierarchy.
    String
    name()
    Returns the field name.
    RepetitionType
    repetitionType()
    Returns the repetition type (required, optional, or repeated).

  • Method Details

    • name

      String name()
      Returns the field name.

    • repetitionType

      RepetitionType repetitionType()
      Returns the repetition type (required, optional, or repeated).

    • maxDefinitionLevel

      int maxDefinitionLevel()
      Returns the maximum definition level, computed from the schema hierarchy.

    • maxRepetitionLevel

      int maxRepetitionLevel()
      Returns the maximum repetition level, computed from the schema hierarchy.