Module datarush.library
Package com.pervasive.datarush.tokens

Interface TokenValued

All Superinterfaces:
TokenTyped
All Known Subinterfaces:
BinaryInputField, BinaryValued, BinaryValuedIterator, BooleanInputField, BooleanValued, BooleanValuedIterator, CharInputField, CharValued, CharValuedIterator, CloseableRecordValuedIterator, DataRegister, DataToken, DateInputField, DateValued, DateValuedIterator, DoubleInputField, DoubleValued, DoubleValuedIterator, DurationInputField, DurationValued, DurationValuedIterator, FloatInputField, FloatValued, FloatValuedIterator, IntInputField, IntValued, IntValuedIterator, Ip4AddressInputField, Ip4AddressValued, Ip4AddressValuedIterator, Ip6AddressInputField, Ip6AddressValued, Ip6AddressValuedIterator, LongInputField, LongValued, LongValuedIterator, MoneyInputField, MoneyValued, MoneyValuedIterator, NumericInputField, NumericValued, NumericValuedIterator, ObjectInputField<T>, ObjectValued<O>, ObjectValuedIterator<T>, PeriodInputField, PeriodValued, PeriodValuedIterator, RecordInput, RecordValued, RecordValuedIterator, ScalarInputField, ScalarRegister, ScalarToken, ScalarValued, ScalarValuedIterator, SeekableRecordValuedIterator, SeekableScalarValuedIterator, SeekableTokenValuedIterator, SteppableRecordValued, StringInputField, StringValued, StringValuedIterator, TimeInputField, TimestampInputField, TimestampValued, TimestampValuedIterator, TimeValued, TimeValuedIterator, TokenValuedIterator
All Known Implementing Classes:
AbstractRecordValued, BinaryRegister, BinaryToken, BooleanRegister, BooleanToken, CharRegister, CharToken, CompositeValue, DatasetIterator, DateRegister, DateToken, DateTokenConverter, DoubleRegister, DoubleToken, DurationRegister, DurationToken, FloatRegister, FloatToken, IntRegister, IntToken, Ip4AddressRegister, Ip4AddressToken, Ip6AddressRegister, Ip6AddressToken, LongRegister, LongToken, MoneyRegister, MoneyToken, NullToken, NumericRegister, NumericToken, ObjectRegister, ObjectToken, PeriodRegister, PeriodToken, RecordMap.RecordMapIterator, RecordRegister, RecordToken, RecordValuedFilter, SparseRecordRegister, StringRegister, StringToken, TimeRegister, TimestampRegister, TimestampToken, TimestampTokenConverter, TimeToken
public interface TokenValued extends TokenTyped
An representation of a nullable data value. Tokens in the DataRush framework support a concept of null value analogous to SQL. Specifically, a token may not have a value assigned, in which case it is referred to as null valued. Tokens which do have a value are called non-null and contain a value appropriate to their type.

  • Method Summary

    Modifier and Type
    Method
    Description
    TokenType
    getType()
    Gets the data type of the token.
    boolean
    isNull()
    Indicates whether the token is null valued.

  • Method Details

    • getType

      TokenType getType()
      Gets the data type of the token. This type will dictate the valid values that can be contained.
      Specified by:
      getType in interface TokenTyped
      Returns:
      the token type.

    • isNull

      boolean isNull()
      Indicates whether the token is null valued. Tokens support null values analogous to SQL. Before accessing the value of the container, it is usually best to ensure it is not null valued using this method.
      Returns:
      true if the token is null valued, false otherwise