Record Class SchemaElement

java.lang.Object
java.lang.Record
dev.hardwood.metadata.SchemaElement
Record Components:
name - column or group name
type - physical type of this element, or null for group nodes
typeLength - fixed byte length for PhysicalType.FIXED_LEN_BYTE_ARRAY columns, or null otherwise
repetitionType - repetition level (required, optional, or repeated)
numChildren - number of child elements for group nodes, or null for primitive nodes
convertedType - legacy converted type annotation, or null if absent
scale - decimal scale (number of digits after the decimal point), or null if not a decimal
precision - decimal precision (total number of digits), or null if not a decimal
fieldId - Thrift field id from the schema, or null if absent
logicalType - logical type annotation, or null if absent
public record SchemaElement(String name, PhysicalType type, Integer typeLength, RepetitionType repetitionType, Integer numChildren, ConvertedType convertedType, Integer scale, Integer precision, Integer fieldId, LogicalType logicalType) extends Record
Schema element in Parquet file metadata.
See Also:

  • Constructor Details

  • Method Details

    • isGroup

      public boolean isGroup()
      Returns true if this element is a group node (has no physical type).

    • isPrimitive

      public boolean isPrimitive()
      Returns true if this element is a primitive node (has a physical type).

    • toString

      public final String toString()
      Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.
      Specified by:
      toString in class Record
      Returns:
      a string representation of this object

    • hashCode

      public final int hashCode()
      Returns a hash code value for this object. The value is derived from the hash code of each of the record components.
      Specified by:
      hashCode in class Record
      Returns:
      a hash code value for this object

    • equals

      public final boolean equals(Object o)
      Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).
      Specified by:
      equals in class Record
      Parameters:
      o - the object with which to compare
      Returns:
      true if this object is the same as the o argument; false otherwise.

    • name

      public String name()
      Returns the value of the name record component.
      Returns:
      the value of the name record component

    • type

      public PhysicalType type()
      Returns the value of the type record component.
      Returns:
      the value of the type record component

    • typeLength

      public Integer typeLength()
      Returns the value of the typeLength record component.
      Returns:
      the value of the typeLength record component

    • repetitionType

      public RepetitionType repetitionType()
      Returns the value of the repetitionType record component.
      Returns:
      the value of the repetitionType record component

    • numChildren

      public Integer numChildren()
      Returns the value of the numChildren record component.
      Returns:
      the value of the numChildren record component

    • convertedType

      public ConvertedType convertedType()
      Returns the value of the convertedType record component.
      Returns:
      the value of the convertedType record component

    • scale

      public Integer scale()
      Returns the value of the scale record component.
      Returns:
      the value of the scale record component

    • precision

      public Integer precision()
      Returns the value of the precision record component.
      Returns:
      the value of the precision record component

    • fieldId

      public Integer fieldId()
      Returns the value of the fieldId record component.
      Returns:
      the value of the fieldId record component

    • logicalType

      public LogicalType logicalType()
      Returns the value of the logicalType record component.
      Returns:
      the value of the logicalType record component