ch.jalu.configme.beanmapper.leafvaluehandler

Class CombiningLeafValueHandler

java.lang.Object

ch.jalu.configme.beanmapper.leafvaluehandler.CombiningLeafValueHandler

All Implemented Interfaces:

LeafValueHandler

public class CombiningLeafValueHandler
extends Object
implements LeafValueHandler

Implementation of LeafValueHandler which takes various implementations thereof and returns the first non-null result of the underlying leaf value handlers.

Constructor Summary

Constructors

Constructor and Description
CombiningLeafValueHandler(Collection<LeafValueHandler> handlers) Constructor.
CombiningLeafValueHandler(LeafValueHandler... handlers) Constructor.

Method Summary

Modifier and Type	Method and Description
Object	convert(TypeInformation typeInformation, Object value) Converts the given value to the given class, if possible.
protected Collection<LeafValueHandler>	getHandlers()
Object	toExportValue(Object value) Converts the given value to a type more suitable for exporting.

Methods inherited from class java.lang.Object

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

Constructor Detail

CombiningLeafValueHandler

public CombiningLeafValueHandler(LeafValueHandler... handlers)

Constructor.

Parameters:

handlers - the handlers to delegate each call to (in the given order)

CombiningLeafValueHandler

public CombiningLeafValueHandler(Collection<LeafValueHandler> handlers)

Constructor.

Parameters:

handlers - the handlers to delegate each call to (in the iteration order of the collection)

Method Detail

convert

public Object convert(TypeInformation typeInformation,
                      Object value)

Description copied from interface: LeafValueHandler

Converts the given value to the given class, if possible. Returns null otherwise. This method must either return null or an object of the class type.

Specified by:

convert in interface LeafValueHandler

Parameters:

typeInformation - the required type

value - the value to convert

Returns:

value of the given type, or null if not applicable

toExportValue

public Object toExportValue(Object value)

Description copied from interface: LeafValueHandler

Converts the given value to a type more suitable for exporting. Used by the mapper in when Property.toExportValue(T) is called on a bean property. Returns null if the leaf value handler cannot handle the value.

Return MapperImpl.RETURN_NULL to signal that null should be used as the export value (returning null itself means this leaf value handler cannot handle it).

Specified by:

toExportValue in interface LeafValueHandler

Parameters:

value - the value to convert to an export value, if possible

Returns:

value to use in the export, or null if not applicable

getHandlers

protected final Collection<LeafValueHandler> getHandlers()