com.speedment.runtime.typemapper.doubles

Class DoubleToFloatMapper

java.lang.Object

com.speedment.runtime.typemapper.doubles.DoubleToFloatMapper

All Implemented Interfaces:

TypeMapper<Double,Float>

public final class DoubleToFloatMapper
extends Object
implements TypeMapper<Double,Float>

Maps between Double and Float values by simply casting to lower precision.

Since:

3.0.2

Author:

Emil Forslund

Nested Class Summary

Nested classes/interfaces inherited from interface com.speedment.runtime.typemapper.TypeMapper

TypeMapper.Category, TypeMapper.Ordering

Field Summary

Fields inherited from interface com.speedment.runtime.typemapper.TypeMapper

COMPARATOR

Constructor Summary

Constructors

Constructor and Description
DoubleToFloatMapper()

Method Summary

Modifier and Type	Method and Description
Type	getJavaType(Column column) Returns a type describing the resulting java type when this mapper is applied to a database result.
String	getLabel() Returns the label for this mapper that should appear to the end user.
TypeMapper.Ordering	getOrdering() Returns how the TypeMapper.Ordering of mapped and un-mapped types relate to each other.
Double	toDatabaseType(Float value) Converts a value from the java domain to the database domain.
Float	toJavaType(Column column, Class<?> entityType, Double value) Converts a value from the database domain to the java domain.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.speedment.runtime.typemapper.TypeMapper

getJavaTypeCategory, identity, primitive

Constructor Detail

DoubleToFloatMapper

public DoubleToFloatMapper()

Method Detail

getLabel

public String getLabel()

Description copied from interface: TypeMapper

Returns the label for this mapper that should appear to the end user.

Specified by:

getLabel in interface TypeMapper<Double,Float>

Returns:

the label

getJavaType

public Type getJavaType(Column column)

Description copied from interface: TypeMapper

Returns a type describing the resulting java type when this mapper is applied to a database result.

Specified by:

getJavaType in interface TypeMapper<Double,Float>

Parameters:

column - the column that is being mapped

Returns:

the resulting java type

toJavaType

public Float toJavaType(Column column,
                        Class<?> entityType,
                        Double value)

Description copied from interface: TypeMapper

Converts a value from the database domain to the java domain.

Specified by:

toJavaType in interface TypeMapper<Double,Float>

Parameters:

column - the column that is being mapped

entityType - the entity type that the mapping is for

value - the value to convert

Returns:

the converted value

toDatabaseType

public Double toDatabaseType(Float value)

Description copied from interface: TypeMapper

Converts a value from the java domain to the database domain.

Specified by:

toDatabaseType in interface TypeMapper<Double,Float>

Parameters:

value - the value to convert

Returns:

the converted value

getOrdering

public TypeMapper.Ordering getOrdering()

Description copied from interface: TypeMapper

Returns how the TypeMapper.Ordering of mapped and un-mapped types relate to each other.

Speedment is using this method to determine if certain optimizations of streams can be made. Make sure to implicitly specify the Ordering in any custom TypeMapper to allow maximum execution speed.

Specifying TypeMapper.Ordering.UNSPECIFIED prevents some optimizations so if possible, write a TypeMapper that RETAINS ordering.

Specified by:

getOrdering in interface TypeMapper<Double,Float>

Returns:

the ordering

See Also:

TypeMapper.Ordering.RETAIN, TypeMapper.Ordering.INVERT, TypeMapper.Ordering.UNSPECIFIED