Package com.apple.foundationdb.relational.api.fluentsql.expression

Class UserDefinedField<T extends DataType>

java.lang.Object

com.apple.foundationdb.relational.api.fluentsql.expression.UserDefinedField<T>

Type Parameters:

T - the type of the field.

All Implemented Interfaces:

ComparableExpressionTrait<T,Expression<T>>, Expression<T>, Field<T>, ScalarExpression<T>

@API(EXPERIMENTAL)
public class UserDefinedField<T extends DataType>
extends Object
implements Field<T>

This represents a user-defined field, this allows the user to explicitly set the field name and type without resorting to any form of metadata resolution.
This could be useful for testing, and referring to qualified fields with subquery aliases for example.

Constructor Summary

Constructors

Constructor	Description
UserDefinedField(T type, Iterable<String> parts)

Method Summary

Modifier and Type	Method	Description
<R, C> R	accept(FluentVisitor<R,C> visitor, C context)
Mixins.BooleanField	asBoolean()
Mixins.DoubleField	asDouble()
Mixins.FloatField	asFloat()
Mixins.IntField	asInt()
Mixins.LongField	asLong()
Mixins.StringField	asString()
boolean	equals(Object other)
String	getName()
Iterable<String>	getParts()
T	getType()
int	hashCode()
Field<?>	subField(DataType type, String name)
Field<?>	subField(String part)
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.apple.foundationdb.relational.api.fluentsql.expression.ComparableExpressionTrait

greaterThan, greaterThanOrEquals, greatest, isEqualTo, lessThan, lessThanOrEqual, notEquals

Methods inherited from interface com.apple.foundationdb.relational.api.fluentsql.expression.Field

asBoolean, asDouble, asFloat, asInt, asLong, asString

Methods inherited from interface com.apple.foundationdb.relational.api.fluentsql.expression.ScalarExpression

isNotNull, isNull

Constructor Details

UserDefinedField

public UserDefinedField(@Nonnull
 T type,
 @Nonnull
 Iterable<String> parts)

Method Details

accept

@Nullable
public <R,
C> R accept(@Nonnull
 FluentVisitor<R,C> visitor,
 @Nonnull
 C context)

Specified by:

accept in interface Expression<T extends DataType>

getParts

@Nonnull
public Iterable<String> getParts()

Specified by:

getParts in interface Field<T extends DataType>

getType

@Nonnull
public T getType()

Specified by:

getType in interface ComparableExpressionTrait<T extends DataType,Expression<T extends DataType>>

Specified by:

getType in interface Expression<T extends DataType>

getName

@Nonnull
public String getName()

Specified by:

getName in interface Field<T extends DataType>

subField

@Nonnull
public Field<?> subField(@Nonnull
 String part)

Specified by:

subField in interface Field<T extends DataType>

subField

@Nonnull
public Field<?> subField(@Nonnull
 DataType type,
 @Nonnull
 String name)

asBoolean

@Nonnull
public Mixins.BooleanField asBoolean()

Specified by:

asBoolean in interface Field<T extends DataType>

asInt

@Nonnull
public Mixins.IntField asInt()

Specified by:

asInt in interface Field<T extends DataType>

asLong

@Nonnull
public Mixins.LongField asLong()

Specified by:

asLong in interface Field<T extends DataType>

asFloat

@Nonnull
public Mixins.FloatField asFloat()

Specified by:

asFloat in interface Field<T extends DataType>

asDouble

@Nonnull
public Mixins.DoubleField asDouble()

Specified by:

asDouble in interface Field<T extends DataType>

asString

@Nonnull
public Mixins.StringField asString()

Specified by:

asString in interface Field<T extends DataType>

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object other)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object