Module org.neo4j.driver

Package org.neo4j.driver.internal.value

Class NullValue

java.lang.Object

org.neo4j.driver.internal.types.InternalMapAccessorWithDefaultValue

org.neo4j.driver.internal.value.ValueAdapter

org.neo4j.driver.internal.value.NullValue

All Implemented Interfaces:

org.neo4j.driver.internal.AsValue, InternalValue, MapAccessor, MapAccessorWithDefaultValue, Value

public final class NullValue
extends ValueAdapter

Field Summary

Fields

Modifier and Type	Field	Description
static final Value	NULL

Method Summary

Modifier and Type	Method	Description
Object	asObject()	This returns a java standard library representation of the underlying value, using a java type that is "sensible" given the underlying type.
String	asString()
boolean	equals(Object obj)
int	hashCode()
boolean	isNull()
String	toString()
Type	type()

Methods inherited from class org.neo4j.driver.internal.value.ValueAdapter

asBoolean, asBoolean, asByteArray, asByteArray, asDouble, asDouble, asEntity, asFloat, asFloat, asInt, asInt, asIsoDuration, asIsoDuration, asList, asList, asList, asList, asLocalDate, asLocalDate, asLocalDateTime, asLocalDateTime, asLocalTime, asLocalTime, asLong, asLong, asMap, asMap, asMap, asMap, asNode, asNumber, asOffsetDateTime, asOffsetDateTime, asOffsetTime, asOffsetTime, asPath, asPoint, asPoint, asRelationship, asString, asValue, asZonedDateTime, asZonedDateTime, computeOrDefault, containsKey, get, get, hasType, isEmpty, isFalse, isTrue, keys, size, typeConstructor, values, values

Methods inherited from class org.neo4j.driver.internal.types.InternalMapAccessorWithDefaultValue

get, get, get, get, get, get, get, get, get, get, get, get, get, get, get, get, get

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.neo4j.driver.types.MapAccessorWithDefaultValue

get, get, get, get, get, get, get, get, get, get, get, get, get, get, get, get, get

Field Details

NULL

public static final Value NULL

Method Details

isNull

public boolean isNull()

Specified by:

isNull in interface Value

Overrides:

isNull in class ValueAdapter

Returns:

true if the value is a Null, otherwise false

asObject

public Object asObject()

Description copied from interface: Value

This returns a java standard library representation of the underlying value, using a java type that is "sensible" given the underlying type. The mapping for common types is as follows:

• TypeSystem.NULL() - null
• TypeSystem.LIST() - List
• TypeSystem.MAP() - Map
• TypeSystem.BOOLEAN() - Boolean
• TypeSystem.INTEGER() - Long
• TypeSystem.FLOAT() - Double
• TypeSystem.STRING() - String
• TypeSystem.BYTES() - byte[]
• TypeSystem.DATE() - LocalDate
• TypeSystem.TIME() - OffsetTime
• TypeSystem.LOCAL_TIME() - LocalTime
• TypeSystem.DATE_TIME() - ZonedDateTime
• TypeSystem.LOCAL_DATE_TIME() - LocalDateTime
• TypeSystem.DURATION() - IsoDuration
• TypeSystem.POINT() - Point
• TypeSystem.NODE() - Node
• TypeSystem.RELATIONSHIP() - Relationship
• TypeSystem.PATH() - Path

Note that the types in TypeSystem refers to the Neo4j type system where TypeSystem.INTEGER() and TypeSystem.FLOAT() are both 64-bit precision. This is why these types return java Long and Double, respectively.

Specified by:

asObject in interface Value

Overrides:

asObject in class ValueAdapter

Returns:

the value as a Java Object.

asString

public String asString()

Specified by:

asString in interface Value

Overrides:

asString in class ValueAdapter

Returns:

the value as a Java String, if possible.

type

public Type type()

Returns:

The type of this value as defined in the Neo4j type system

equals

public boolean equals(Object obj)

Specified by:

equals in interface Value

Specified by:

equals in class ValueAdapter

hashCode

public int hashCode()

Specified by:

hashCode in interface Value

Specified by:

hashCode in class ValueAdapter

toString

public String toString()

Specified by:

toString in interface Value

Specified by:

toString in class ValueAdapter