57 lines
4.1 KiB
HTML
57 lines
4.1 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Reading spooled files using PrintObjectPageInputStream and PrintObjectTransformedInputStream" />
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<meta name="abstract" content="" />
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<meta name="description" content="" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="printsfv" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Reading spooled files using PrintObjectPageInputStream and PrintObjectTransformedInputStream</title>
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</head>
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<body id="printsfv"><a name="printsfv"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Reading spooled files using PrintObjectPageInputStream and PrintObjectTransformedInputStream</h1>
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<div><p></p>
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<div class="section"><p>You can use the <a href="javadoc/com/ibm/as400/access/PrintObjectPageInputStream.html"> PrintObjectPageInputStream</a> class to read the data out
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of a server AFP™ and
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SCS spooled file one page at a time.</p>
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<p>You can obtain a PrintObjectPageInputStream
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object with the <a href="javadoc/com/ibm/as400/access/SpooledFile.html#GETPAGEINPUTSTREAM(COM.IBM.AS400.ACCESS.PRINTPARAMETERLIST)"> getPageInputStream()</a> method.</p>
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<p>Use one of the <a href="javadoc/com/ibm/as400/access/PrintObjectPageInputStream.html#READ()"> read()</a> methods for reading from the input stream. All
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these methods return the number of bytes actually read, or -1 if no bytes
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were read and the end of page was reached.</p>
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<p>Use the <a href="javadoc/com/ibm/as400/access/PrintObjectInputStream.html#AVAILABLE()"> available()</a> method of PrintObjectPageInputStream to
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return the total number of bytes in the current page. The PrintObjectPageInputStream
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class supports marking the input stream, so PrintObjectPageInputStream always
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returns true from the <a href="javadoc/com/ibm/as400/access/PrintObjectPageInputStream.html#MARKSUPPORTED()"> markSupported()</a> method. The caller can use the <a href="javadoc/com/ibm/as400/access/PrintObjectPageInputStream.html#MARK(INT)"> mark()</a> and <a href="javadoc/com/ibm/as400/access/PrintObjectInputStream.html#RESET()"> reset()</a> methods to move the current read position backward
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in the input stream so that subsequent reads reread the same bytes. The caller
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can use the <a href="javadoc/com/ibm/as400/access/PrintObjectInputStream.html#SKIP(LONG)"> skip()</a> method to move the read position forward in the
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input stream without reading the data.</p>
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<p>However, when transforming an
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entire spooled file data stream is desired, use the <a href="javadoc/com/ibm/as400/access/PrintObjectTransformedInputStream.html"> PrintObjectTransformedInputStream</a> class.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Example</h4><p>The following example shows how to use PrintObjectPageInputStream
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and PrintObjectTransformedInputStream to obtain different transformations
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when reading spooled file data:</p>
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<blockquote><a href="transinstr.htm#transinstr">Example: Reading and transforming spooled files</a></blockquote>
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</div>
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</div>
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</body>
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</html>
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