Package net.ontopia.topicmaps.utils

Interface ImportExportServiceIF

All Known Implementing Classes:

RDFImporterExporterService

public interface ImportExportServiceIF

Service definition for services that provide format reader and writers.

Since:

5.4.0

Method Summary

Modifier and Type	Method	Description
boolean	canRead(URL resource)	PUBLIC: Indicates that the service can supply a TopicMapReaderIF implementation for the specified resource.
boolean	canWrite(URL resource)	PUBLIC: Indicates that the service can supply a TopicMapWriterIF implementation for the specified resource.
AbstractURLTopicMapReference	createReference(URL url, String referenceId, String title, LocatorIF baseAddress)	PUBLIC: Creates an AbstractURLTopicMapReference for the specified url, using the appropriate reader and/or writer provided by this service.
TopicMapReaderIF	getReader(URL resource)	PUBLIC: Create and return a TopicMapReaderIF for the specified resource.
TopicMapWriterIF	getWriter(OutputStream stream)	PUBLIC: Create and return a TopicMapWriterIF for the specified stream.

Method Detail

canRead

boolean canRead(URL resource)

PUBLIC: Indicates that the service can supply a TopicMapReaderIF implementation for the specified resource.

Parameters:

resource - The resource a reader is needed for

Returns:

true if this service can provide the needed reader

canWrite

boolean canWrite(URL resource)

PUBLIC: Indicates that the service can supply a TopicMapWriterIF implementation for the specified resource.

Parameters:

resource - The resource a writer is needed for

Returns:

true if this service can provide the needed writer

getWriter

TopicMapWriterIF getWriter(OutputStream stream)
                    throws IOException

PUBLIC: Create and return a TopicMapWriterIF for the specified stream. This method should be preceded with a call to #canWrite(java.lang.String) to check if this service can write to the resource which the stream is connected to.

Parameters:

stream - The stream to write to

Returns:

The TopicMapWriterIF created by this service

Throws:

IOException - if anything goes wrong during initialization of the writer regarding IO operations

getReader

TopicMapReaderIF getReader(URL resource)

PUBLIC: Create and return a TopicMapReaderIF for the specified resource. This method should be preceded with a call to #canRead(java.lang.String) to check if this service can read the specified resource.

Parameters:

resource - The resource to create a reader for

Returns:

The TopicMapReaderIF created by this service

createReference

AbstractURLTopicMapReference createReference(URL url,
                                             String referenceId,
                                             String title,
                                             LocatorIF baseAddress)

PUBLIC: Creates an AbstractURLTopicMapReference for the specified url, using the appropriate reader and/or writer provided by this service. This method is used by the sources like URLTopicMapSource and ResourceTopicMapSource.

Parameters:

url - The resource to create the reference for

referenceId - The id to use for the reference

title - The title to use for the reference

baseAddress - The base address to use if supported

Returns:

the reference for the specified resource