Package com.gpudb

Class TypeObjectMap.ConvertingMethodHandler

java.lang.Object

com.gpudb.TypeObjectMap.ConvertingMethodHandler

All Implemented Interfaces:

TypeObjectMap.Accessor, TypeObjectMap.Mutator

Enclosing class:

TypeObjectMap<T>

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

A combined TypeObjectMap.Accessor and TypeObjectMap.Mutator that provides access to a field via specified get and set methods using reflection, converting the value to and from the data type of a specified GPUdb column. The get method must be public and take no parameters, and the set method must be public and take one parameter of the same type returned by the get method.

Constructor Summary

Constructors

Constructor	Description
ConvertingMethodHandler(Method getMethod, Method setMethod, Type.Column column)	Creates a TypeObjectMap.ConvertingMethodHandler for the specified get and set methods and GPUdb column.

Method Summary

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

ConvertingMethodHandler

public ConvertingMethodHandler(Method getMethod,
                               Method setMethod,
                               Type.Column column)

Creates a TypeObjectMap.ConvertingMethodHandler for the specified get and set methods and GPUdb column. Field values will be converted to and from the data type of the column.

Parameters:

getMethod - the get method

setMethod - the set method

column - the column

Throws:

IllegalArgumentException - if the specified methods are not of the correct form or the field does not have a data type that is supported for conversion

Method Detail

get

public Object get(Object o)

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

Specified by:

get in interface TypeObjectMap.Accessor

Parameters:

o - the object

Returns:

the value returned by the get method

Throws:

GPUdbRuntimeException - if the value could not be retrieved

set

public void set(Object o,
                Object value)

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

Specified by:

set in interface TypeObjectMap.Mutator

Parameters:

o - the object

value - the new value of the field

Throws:

GPUdbRuntimeException - if the value could not be set