NullToken (Dataflow Library Distribution Project 6.6.0-111 API)

java.lang.Object
- com.pervasive.datarush.tokens.scalar.NullToken

All Implemented Interfaces:

DataToken, BinaryValued, BooleanValued, CharValued, DateValued, DoubleValued, FloatValued, IntValued, LongValued, NumericValued, ScalarToken, ScalarValued, StringValued, TimestampValued, TimeValued, TokenValued, ScalarTyped, TokenTyped, Serializable, Comparable<NullToken>
```
public class NullToken
extends Object
implements ScalarToken, Comparable<NullToken>, BinaryValued, BooleanValued, CharValued, DateValued, IntValued, StringValued, TimeValued, TimestampValued
```
An null token.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field and Description

static NullToken NULL
A null valued NullToken
- Fields inherited from interface com.pervasive.datarush.tokens.scalar.NumericValued
  MAX_INFINITY, MIN_INFINITY

Fields
Modifier and Type	Field and Description
`static NullToken`	`NULL` A null valued `NullToken`

Constructor Summary

Constructors
Modifier Constructor and Description

protected NullToken()

Constructors
Modifier	Constructor and Description
`protected`	`NullToken()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`BigDecimal`	`asBigDecimal()` Gets the contained numeric value.
`byte[]`	`asBinary()` Gets the contained binary value.
`byte[]`	`asBinaryRef()` Gets a reference to the contained binary value.
`boolean`	`asBoolean()` Gets the contained boolean value.
`CalendarDate`	`asCalendarDate()` Gets the contained date value.
`char`	`asChar()` Gets the contained character value.
`Date`	`asDate()` Gets the contained date value as a `java.sql.Date` relative to the default time zone.
`Date`	`asDate(TimeZone tz)` Gets the contained date value as a `java.sql.Date` relative to the given time zone.
`int`	`asDayMillis()` Gets the contained time value as the number of milliseconds elapsed since midnight.
`double`	`asDouble()` Gets the contained double value.
`long`	`asEpochDays()` Gets the contained date value as the number of days since Java epoch (January 1, 1970).
`long`	`asEpochSecs()` Gets the contained timestamp value as the number of seconds since Java epoch (January 1, 1970 00:00:00 GMT).
`float`	`asFloat()` Gets the contained float value.
`int`	`asInt()` Gets the contained integer value.
`long`	`asLong()` Gets the contained long value.
`String`	`asString()` Gets the contained string value.
`TimeOfDay`	`asTimeOfDay()` Gets the contained time value.
`Timestamp`	`asTimestamp()` Gets the contained timestamp value as a `java.sql.Timestamp` relative to the default time zone.
`int`	`compareTo(NullToken o)`
`boolean`	`equals(Object obj)` Indicates whether another object is equal to this token.
`ScalarTokenType`	`getType()` Gets the data type of the token.
`int`	`hashCode()` Returns a hash code for the token.
`boolean`	`isNull()` Indicates whether the token is null valued.
`boolean`	`isZero()` Indicates whether the value is the zero value for the type.
`int`	`offsetSecs()` Gets the time zone and daylight saving time offset of the contained timestamp value, in seconds.
`int`	`subsecNanos()` Gets the subsecond portion of the contained timestamp value.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.pervasive.datarush.tokens.DataToken
toString

Methods inherited from interface com.pervasive.datarush.tokens.TokenValued
isNull

- Field Detail
  - NULL
```
public static final NullToken NULL
```
    A null valued NullToken
- Constructor Detail
  - NullToken
```
protected NullToken()
```
- Method Detail
  - compareTo
```
public int compareTo(NullToken o)
```
    Specified by:
    
    compareTo in interface Comparable<NullToken>
  - equals
```
public boolean equals(Object obj)
```
    Description copied from interface: DataToken
    
    Indicates whether another object is equal to this token. Two null valued tokens are considered equal. This differs from the behavior of TokenComparator.equal(TokenValued,TokenValued) but makes it possible to store DataTokens in Maps.
    
    Specified by:
    
    equals in interface DataToken
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    
    obj - the object to compare
    
    Returns:
    
    true if the other object is a token of the same type and contains the same value, false otherwise.
  - hashCode
```
public int hashCode()
```
    Description copied from interface: DataToken
    
    Returns a hash code for the token. This value is guaranteed to be consistent with that returned by TokenConverter.asHashCode(TokenValued).
    
    Specified by:
    
    hashCode in interface DataToken
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    
    a hash code value for the token
  - getType
```
public ScalarTokenType getType()
```
    Description copied from interface: TokenValued
    
    Gets the data type of the token. This type will dictate the valid values that can be contained.
    
    Specified by:
    
    getType in interface ScalarValued
    
    Specified by:
    
    getType in interface TokenValued
    
    Specified by:
    
    getType in interface ScalarTyped
    
    Specified by:
    
    getType in interface TokenTyped
    
    Returns:
    
    the token type.
  - isZero
```
public boolean isZero()
```
    Description copied from interface: ScalarValued
    
    Indicates whether the value is the zero value for the type. Zero values are not stored in sparse representation formats.
    
    Specified by:
    
    isZero in interface ScalarValued
    
    Returns:
    
    true if the value is the zero value, false otherwise.
  - asDouble
```
public double asDouble()
```
    Description copied from interface: DoubleValued
    
    Gets the contained double value.
    
    Specified by:
    
    asDouble in interface DoubleValued
    
    Returns:
    
    the contained value as a double. If null valued, as indicated by TokenValued.isNull(), Double.NaN is returned.
  - asBigDecimal
```
public BigDecimal asBigDecimal()
```
    Description copied from interface: NumericValued
    
    Gets the contained numeric value.
    
    Specified by:
    
    asBigDecimal in interface NumericValued
    
    Returns:
    
    the contained value as a java.math.BigDecimal. If null valued, as indicated by TokenValued.isNull(), null is returned.
  - asLong
```
public long asLong()
```
    Description copied from interface: LongValued
    
    Gets the contained long value.
    
    Specified by:
    
    asLong in interface LongValued
    
    Returns:
    
    the contained value as a long. If null valued, as indicated by TokenValued.isNull(), 0 is returned.
  - asFloat
```
public float asFloat()
```
    Description copied from interface: FloatValued
    
    Gets the contained float value.
    
    Specified by:
    
    asFloat in interface FloatValued
    
    Returns:
    
    the contained value as a float. If null valued, as indicated by TokenValued.isNull(), Float.NaN is returned.
  - asTimestamp
```
public Timestamp asTimestamp()
```
    Description copied from interface: TimestampValued
    
    Gets the contained timestamp value as a java.sql.Timestamp relative to the default time zone. The time zone used by TimeZone#getDefault() is used.
    
    Specified by:
    
    asTimestamp in interface TimestampValued
    
    Returns:
    
    the contained value as a java.sql.Timestamp. If null valued, as indicated by TokenValued.isNull(), null is returned.
  - asEpochSecs
```
public long asEpochSecs()
```
    Description copied from interface: TimestampValued
    
    Gets the contained timestamp value as the number of seconds since Java epoch (January 1, 1970 00:00:00 GMT). Timestamp values support nanosecond precision, although this method does not expose it. To access this level of detail, use subsecNanos() in conjunction with this method.
    
    Specified by:
    
    asEpochSecs in interface TimestampValued
    
    Returns:
    
    the contained value as days since Java epoch. If null valued, as indicated by TokenValued.isNull(), 0 is returned.
    
    See Also:
    
    TimestampValued.subsecNanos()
  - subsecNanos
```
public int subsecNanos()
```
    Description copied from interface: TimestampValued
    
    Gets the subsecond portion of the contained timestamp value. The value returned is relative to the seconds value returned by asEpochSecs(). Thus the value asEpochSecs() * 1000000000 + subsecNanos() represents the number of nanoseconds since Java epoch.
    
    Specified by:
    
    subsecNanos in interface TimestampValued
    
    Returns:
    
    the subsecond portion of the contained value, in nanoseconds. If null valued, as indicated by TokenValued.isNull(), 0 is returned.
    
    See Also:
    
    TimestampValued.asEpochSecs()
  - offsetSecs
```
public int offsetSecs()
```
    Description copied from interface: TimestampValued
    
    Gets the time zone and daylight saving time offset of the contained timestamp value, in seconds.
    
    Specified by:
    
    offsetSecs in interface TimestampValued
    
    Returns:
    
    the time zone and daylight saving time offset of the contained value, in seconds. If null valued, as indicated by TokenValued.isNull(), 0 is returned.
    
    See Also:
    
    TimestampValued.asEpochSecs()
  - asDayMillis
```
public int asDayMillis()
```
    Description copied from interface: TimeValued
    
    Gets the contained time value as the number of milliseconds elapsed since midnight.
    
    Specified by:
    
    asDayMillis in interface TimeValued
    
    Returns:
    
    the contained value as milliseconds since midnight. If null valued, as indicated by TokenValued.isNull(), 0 is returned.
  - asTimeOfDay
```
public TimeOfDay asTimeOfDay()
```
    Description copied from interface: TimeValued
    
    Gets the contained time value. This value represents the timezone free time portion of a timestamp.
    
    Specified by:
    
    asTimeOfDay in interface TimeValued
    
    Returns:
    
    the contained value. If null valued, as indicated by TokenValued.isNull(), null is returned.
  - asString
```
public String asString()
```
    Description copied from interface: StringValued
    
    Gets the contained string value.
    
    Specified by:
    
    asString in interface StringValued
    
    Returns:
    
    the contained value as a String. If null valued, as indicated by TokenValued.isNull(), the empty string ("") is returned.
  - asInt
```
public int asInt()
```
    Description copied from interface: IntValued
    
    Gets the contained integer value.
    
    Specified by:
    
    asInt in interface IntValued
    
    Returns:
    
    the contained value as an int. If null valued, as indicated by TokenValued.isNull(), 0 is returned.
  - asDate
```
public Date asDate()
```
    Description copied from interface: DateValued
    
    Gets the contained date value as a java.sql.Date relative to the default time zone. The time zone used by TimeZone.getDefault() is used.
    
    Specified by:
    
    asDate in interface DateValued
    
    Returns:
    
    the contained value as a java.sql.Date. If null valued, as indicated by TokenValued.isNull(), null is returned.
  - asDate
```
public Date asDate(TimeZone tz)
```
    Description copied from interface: DateValued
    
    Gets the contained date value as a java.sql.Date relative to the given time zone.
    
    Specified by:
    
    asDate in interface DateValued
    
    Parameters:
    
    tz - the time zone in which to interpret the date
    
    Returns:
    
    the contained value as a java.sql.Date. If null valued, as indicated by TokenValued.isNull(), null is returned.
  - asEpochDays
```
public long asEpochDays()
```
    Description copied from interface: DateValued
    
    Gets the contained date value as the number of days since Java epoch (January 1, 1970).
    
    Specified by:
    
    asEpochDays in interface DateValued
    
    Returns:
    
    the contained value as days since Java epoch. If null valued, as indicated by TokenValued.isNull(), 0 is returned.
  - asCalendarDate
```
public CalendarDate asCalendarDate()
```
    Description copied from interface: DateValued
    
    Gets the contained date value. This value represents the timezone free date portion of a timestamp.
    
    Specified by:
    
    asCalendarDate in interface DateValued
    
    Returns:
    
    the contained value as a calendar date. If null valued, as indicated by TokenValued.isNull(), null is returned.
  - asChar
```
public char asChar()
```
    Description copied from interface: CharValued
    
    Gets the contained character value.
    
    Specified by:
    
    asChar in interface CharValued
    
    Returns:
    
    the contained value as a char. If null valued, as indicated by TokenValued.isNull(), Character.MAX_VALUE is returned.
  - asBoolean
```
public boolean asBoolean()
```
    Description copied from interface: BooleanValued
    
    Gets the contained boolean value.
    
    Specified by:
    
    asBoolean in interface BooleanValued
    
    Returns:
    
    the contained value as a boolean. If null valued, as indicated by TokenValued.isNull(), false is returned.
  - asBinary
```
public byte[] asBinary()
```
    Description copied from interface: BinaryValued
    
    Gets the contained binary value.
    The array returned is a copy of the binary data contained in the object. To avoid this overhead, use BinaryValued.asBinaryRef() instead.
    
    Specified by:
    
    asBinary in interface BinaryValued
    
    Returns:
    
    the contained value as a byte[]. If null valued, as indicated by TokenValued.isNull(), null is returned.
  - asBinaryRef
```
public byte[] asBinaryRef()
```
    Description copied from interface: BinaryValued
    
    Gets a reference to the contained binary value.
    While this call avoids the overhead seen with BinaryValued.asBinary(), the caller must guarantee that the returned array will not be modified. Failure to comply may result in the dataflow exhibiting unexpected behavior, as other operators may (or may not) see the modified value.
    
    Specified by:
    
    asBinaryRef in interface BinaryValued
    
    Returns:
    
    a reference to the byte[] holding the contained value. If null valued, as indicated by TokenValued.isNull(), null is returned.
  - isNull
```
public final boolean isNull()
```
    Description copied from interface: TokenValued
    
    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.
    
    Specified by:
    
    isNull in interface TokenValued
    
    Returns:
    
    true if the token is null valued, false otherwise

Class NullToken

Field Summary

Fields inherited from interface com.pervasive.datarush.tokens.scalar.NumericValued

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface com.pervasive.datarush.tokens.DataToken

Methods inherited from interface com.pervasive.datarush.tokens.TokenValued

Field Detail

NULL

Constructor Detail

NullToken

Method Detail

compareTo

equals

hashCode

getType

isZero

asDouble

asBigDecimal

asLong

asFloat

asTimestamp

asEpochSecs

subsecNanos

offsetSecs

asDayMillis

asTimeOfDay

asString

asInt

asDate

asDate

asEpochDays

asCalendarDate

asChar

asBoolean

asBinary

asBinaryRef

isNull