org.apache.commons.betwixt.strategy
Class MappingDerivationStrategy

java.lang.Object
  org.apache.commons.betwixt.strategy.MappingDerivationStrategy

public abstract class MappingDerivationStrategy
extends java.lang.Object

Pluggable strategy determines whether introspection or bind time typing should be used when finding mappings. The type of a property is determined at introspection time but the actual type of the instance can differ at bind time (when the xml is actually being processed). This strategy is used to set (at a per-element level) whether the bind or introspection time type should be used to calculate the mapping to be used.

Note: this strategy is intentionally course. Typically, the best approach is to use a custom strategy to set coursely grained rules (for example: all implemetations of 'IAnimal' use bind time type mapping) and then dot betwixt files to provide refinements.

Since:

0.7

Author:

Apache Commons Team, Apache Software Foundation

Field Summary

static MappingDerivationStrategy	DEFAULT The default Betwixt strategy.
static MappingDerivationStrategy	USE_BIND_TIME_TYPE Implementation that always uses bind time type mapping
static MappingDerivationStrategy	USE_INTROSPECTION_TIME_TYPE Implementation that always uses introspection time type mapping

Constructor Summary

MappingDerivationStrategy()

Method Summary

abstract boolean

useBindTimeTypeForMapping(java.lang.Class propertyType, java.lang.Class singluarPropertyType) Should bind time type be used for all elements of the given property type?

Methods inherited from class java.lang.Object

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

Field Detail

USE_BIND_TIME_TYPE

public static final MappingDerivationStrategy USE_BIND_TIME_TYPE

Implementation that always uses bind time type mapping

USE_INTROSPECTION_TIME_TYPE

public static final MappingDerivationStrategy USE_INTROSPECTION_TIME_TYPE

Implementation that always uses introspection time type mapping

DEFAULT

public static final MappingDerivationStrategy DEFAULT

The default Betwixt strategy.

Constructor Detail

MappingDerivationStrategy

public MappingDerivationStrategy()

Method Detail

useBindTimeTypeForMapping

public abstract boolean useBindTimeTypeForMapping(java.lang.Class propertyType,
                                                  java.lang.Class singluarPropertyType)

Should bind time type be used for all elements of the given property type?

Parameters:

propertyType - Class typing the property, not null

singluarPropertyType - Class composing the collective or null if the property is not collective

Returns:

true if bind time type should be used for the mapping