Package com.bea.wli.sb.sources

Interface Transformer

public interface Transformer

The Transformer interface Instances of this class are used to transform one type of Source to another. The instance is responsible for indicating what types of sources it can convert between. Note that a transformer is required to support the full cross-product of transformations implied by the supported input and output sources. In other words, a transformer must support transforming any supported input source to any supported output source.

Method Summary

Modifier and Type	Method	Description
Collection<Class<? extends Source>>	getSupportedInputs()	return a collection of source classes from which the transformations are supported.
Collection<Class<? extends Source>>	getSupportedOutputs()	return a collection of source classes to which the transformations are supported.
<T extends Source> T	transform(Source source, Class<T> clazz, TransformOptions options)	Perform a transformation (i.e.

Method Details

getSupportedInputs

Collection<Class<? extends Source>> getSupportedInputs()

return a collection of source classes from which the transformations are supported. StreamSource.class need not be returned in this collection since it is implied that the transformer supports it.

getSupportedOutputs

Collection<Class<? extends Source>> getSupportedOutputs()

return a collection of source classes to which the transformations are supported. StreamSource.class need not be returned in this collection since it is implied that the transformer supports it

transform

<T extends Source> T transform(Source source,
 Class<T> clazz,
 TransformOptions options)
                        throws TransformException

Perform a transformation (i.e. a conversion or translation) from one of the supported to another supported source class instance. Parameter clazz specifies the class of the desired return object. For example if clazz is StreamSource.class, the return value from the method is an instance of StreamSource.

Parameters:

source - the current source instance that we wish to transform

clazz - the desired type of source we are trying to create

options - the set of options that may influence the transformation (e.g. character set encoding)

Throws:

TransformException - if there is a failure while performing the transformation

UnsupportedOperationException - if the requested transformation is not supported