Package org.apache.arrow.vector.types.pojo

Class Field

java.lang.Object
org.apache.arrow.vector.types.pojo.Field
public class Field extends Object
A POJO abstraction for the Flatbuffer description of Vector Type.

  • Constructor Details

    • Field

      public Field(String name, FieldType fieldType, List<Field> children)
      Constructs a new Field object.
      Parameters:
      name - name of the field
      fieldType - type of the field
      children - child fields, if any

  • Method Details

    • nullablePrimitive

      public static Field nullablePrimitive(String name, ArrowType.PrimitiveType type)

    • nullable

      public static Field nullable(String name, ArrowType type)

    • notNullable

      public static Field notNullable(String name, ArrowType type)

    • createVector

      public FieldVector createVector(BufferAllocator allocator)
      Construct a new vector of this type using the given allocator.

    • convertField

      public static Field convertField(Field field)
      Constructs a new instance from a flatbuffer representation of the field.

    • getField

      public int getField(com.google.flatbuffers.FlatBufferBuilder builder)
      Puts this object into builder and returns the length of the serialized flatbuffer.

    • getName

      public String getName()

    • isNullable

      public boolean isNullable()

    • getType

      public ArrowType getType()

    • getFieldType

      public FieldType getFieldType()

    • getDictionary

      public DictionaryEncoding getDictionary()

    • getChildren

      public List<Field> getChildren()

    • getMetadata

      public Map<String,String> getMetadata()

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • equals

      public boolean equals(Object obj)
      Overrides:
      equals in class Object

    • toString

      public String toString()
      Overrides:
      toString in class Object