Package com.sun.jna

Class DefaultTypeMapper

java.lang.Object

com.sun.jna.DefaultTypeMapper

All Implemented Interfaces:

TypeMapper

Direct Known Subclasses:

W32APITypeMapper

public class DefaultTypeMapper
extends Object
implements TypeMapper

Provide custom mappings to and from native types. The default lookup checks classes corresponding to converters in the order added; if the class to be converted is an instance of the converter's registered class, the converter will be used.

Derived classes should install additional converters using addToNativeConverter(java.lang.Class<?>, com.sun.jna.ToNativeConverter) and/or addFromNativeConverter(java.lang.Class<?>, com.sun.jna.FromNativeConverter) in the default constructor. Classes for primitive types will automatically register for the corresponding Object type and vice versa (i.e. you don't have to register both int.class and Integer.class). If you want different mapping behavior than the default, simply override getToNativeConverter(java.lang.Class<?>) and getFromNativeConverter(java.lang.Class<?>).

See Also:

Library.OPTION_TYPE_MAPPER

Constructor Summary

Constructors

Constructor	Description
DefaultTypeMapper()

Method Summary

Modifier and Type	Method	Description
void	addFromNativeConverter(Class<?> cls, FromNativeConverter converter)	Add a FromNativeConverter to convert a native result type into the given Java type.
void	addToNativeConverter(Class<?> cls, ToNativeConverter converter)	Add a ToNativeConverter to define the conversion into a native type from arguments of the given Java type.
void	addTypeConverter(Class<?> cls, TypeConverter converter)	Add a TypeConverter to provide bidirectional mapping between a native and Java type.
FromNativeConverter	getFromNativeConverter(Class<?> javaType)	Return the FromNativeConverter appropriate for the given Java class.
ToNativeConverter	getToNativeConverter(Class<?> javaType)	Return the ToNativeConverter appropriate for the given Java class.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultTypeMapper

public DefaultTypeMapper()

Method Detail

addToNativeConverter

public void addToNativeConverter(Class<?> cls,
                                 ToNativeConverter converter)

Add a ToNativeConverter to define the conversion into a native type from arguments of the given Java type. Converters are checked for in the order added.

Parameters:

cls - Java class requiring conversion

converter - ToNativeConverter to transform an object of the given Java class into its native-compatible form.

addFromNativeConverter

public void addFromNativeConverter(Class<?> cls,
                                   FromNativeConverter converter)

Add a FromNativeConverter to convert a native result type into the given Java type. Converters are checked for in the order added.

Parameters:

cls - Java class for the Java representation of a native type.

converter - FromNativeConverter to transform a native-compatible type into its Java equivalent.

addTypeConverter

public void addTypeConverter(Class<?> cls,
                             TypeConverter converter)

Add a TypeConverter to provide bidirectional mapping between a native and Java type.

Parameters:

cls - Java class representation for a native type

converter - TypeConverter to translate between native and Java types.

getFromNativeConverter

public FromNativeConverter getFromNativeConverter(Class<?> javaType)

Description copied from interface: TypeMapper

Return the FromNativeConverter appropriate for the given Java class.

Specified by:

getFromNativeConverter in interface TypeMapper

Parameters:

javaType - Java class representation of the native type.

Returns:

Converter from the native-compatible type.

getToNativeConverter

public ToNativeConverter getToNativeConverter(Class<?> javaType)

Description copied from interface: TypeMapper

Return the ToNativeConverter appropriate for the given Java class.

Specified by:

getToNativeConverter in interface TypeMapper

Parameters:

javaType - Java class representation of the native type.

Returns:

Converter to the native-compatible type.