Package com.gpudb

Class TypeObjectMap.ConvertingFieldHandler

java.lang.Object

com.gpudb.TypeObjectMap.ConvertingFieldHandler

All Implemented Interfaces:

TypeObjectMap.Accessor, TypeObjectMap.Mutator

Enclosing class:

TypeObjectMap<T>

public static final class TypeObjectMap.ConvertingFieldHandler
extends Object
implements TypeObjectMap.Accessor, TypeObjectMap.Mutator

A combined TypeObjectMap.Accessor and TypeObjectMap.Mutator that provides access to a specified field using reflection, converting the value to and from the data type of a specified GPUdb column.

Constructor Summary

Constructors

Constructor	Description
ConvertingFieldHandler(Field field, Type.Column column)	Creates a TypeObjectMap.ConvertingFieldHandler for the specified field and GPUdb column.

Method Summary

Modifier and Type	Method	Description
Object	get(Object o)	Returns the value of the field specified in the constructor from the specified object, converting it to the data type of the GPUdb column specified in the constructor.
void	set(Object o, Object value)	Sets the value of the field specified in the constructor in the specified object after converting it from the data type of the GPUdb column specified in the constructor.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConvertingFieldHandler

public ConvertingFieldHandler(Field field,
                              Type.Column column)

Creates a TypeObjectMap.ConvertingFieldHandler for the specified field and GPUdb column. Field values will be converted to and from the data type of the column.

Parameters:

field - the field

column - the column

Throws:

IllegalArgumentException - if the field does not have a data type that is supported for conversion

Method Detail

get

public Object get(Object o)

Returns the value of the field specified in the constructor from the specified object, converting it to the data type of the GPUdb column specified in the constructor. The object must belong to the class containing the field.

Specified by:

get in interface TypeObjectMap.Accessor

Parameters:

o - the object

Returns:

the converted value of the field

Throws:

GPUdbRuntimeException - if the value could not be retrieved

set

public void set(Object o,
                Object value)

Sets the value of the field specified in the constructor in the specified object after converting it from the data type of the GPUdb column specified in the constructor. The object must belong to the class containing the field.

Specified by:

set in interface TypeObjectMap.Mutator

Parameters:

o - the object

value - the unconverted new value of the field

Throws:

GPUdbRuntimeException - if the value could not be set