org.foray.graphic.factory
Class PDFFactory

java.lang.Object
  org.foray.graphic.factory.GraphicFactory
      org.foray.graphic.factory.PDFFactory

public class PDFFactory
extends GraphicFactory

GraphicFactory object for PDF graphic type.

Field Summary

protected static byte[]

PDF_HEADER File header indicating that the file is a PDF file.

Constructor Summary

PDFFactory(GraphicServer4a server)
Constructor.

Method Summary

PDFGraphic

attemptCreate(URL url, BufferedInputStream bis) Subclasses implement this method to try to create an appropriate Graphic instance.

Methods inherited from class org.foray.graphic.factory.GraphicFactory

getLogger, getServer, makeGraphic, maxBytesToVerify

Methods inherited from class java.lang.Object

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

Field Detail

PDF_HEADER

protected static final byte[] PDF_HEADER

File header indicating that the file is a PDF file.

Constructor Detail

PDFFactory

public PDFFactory(GraphicServer4a server)

Constructor.

Parameters:

server - The parent graphic server.

Method Detail

attemptCreate

public PDFGraphic attemptCreate(URL url,
                                BufferedInputStream bis)
                         throws IOException

Description copied from class: GraphicFactory

Subclasses implement this method to try to create an appropriate Graphic instance. Note that this superclass handles the task of marking and resetting the input stream, so all the subclass needs to do is read the stream.

Specified by:

attemptCreate in class GraphicFactory

Parameters:

url - The URL which contains the graphic content.

bis - The reusable input stream containing the bytes from url.

Returns:

The newly-created Graphic instance, or null if this factory was unable to create such an instance.

Throws:

IOException - For IO errors.