javax.print
Interface Doc
- SimpleDoc
Doc specifies the interface for print services how to obtain
the print data and document specific attributes for printing.
The print data is always passed to a
DocPrintJob object
as a
Doc object which allows the print services to:
- Determine the actual document format of the supplied print data. This
is supplied as a
DocFlavor object with the MIME type
and the representation class of the print data. - Obtain the print data either in its representation class or depending
on the document format through convenience methods as a
Reader or an InputStream. - Obtain the document's attribute set specifying the attributes which
apply to this document instance.
Every method of a
Doc implementation has to return always the
same object on every method call. Therefore if the print job consumes the
print data via a stream or a reader object it can read only once the
supplied print data. Implementations of this interface have to be thread
safe.
getAttributes
public DocAttributeSet getAttributes()
Returns the unmodifiable view of the attributes of this doc object.
The attributes of this doc's attributes set overrides attributes of
the same category in the print job's attribute set. If an attribute
is not available in this doc's attributes set or
null
is returned the attributes of the same category of the print job are
used.
- The unmodifiable attributes set, or
null.
getPrintData
public Object getPrintData()
throws IOException Returns the print data of this doc object.
The returned object is an instance as described by the associated
document flavor (
DocFlavor.getRepresentationClassName())
and can be cast to this representation class.
- The print data in the representation class.
IOException - if representation class is a stream and I/O
exception occures.
getReaderForText
public Reader getReaderForText()
throws IOException Returns a
Reader object for extracting character print data
from this document.
This method is supported if the document flavor is of type:
char[]java.lang.Stringjava.io.Reader
otherwise this method returns
null.
- The
Reader object, or null.
getStreamForBytes
public InputStream getStreamForBytes()
throws IOException Returns an
InputStream object for extracting byte print data
from this document.
This method is supported if the document flavor is of type:
byte[]java.io.InputStream
otherwise this method returns
null.
- The
InputStream object, or null.
Doc.java --
Copyright (C) 2004, 2006 Free Software Foundation, Inc.
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