pdfa/pdfa_extension_schema_with_type
Demonstrate the use of an XMP extension schema as defined in PDF/A-1.
Create a PDF/A document and use the "metadata" option of begin_document() to supply an XMP file containing a complex XMP extension schema which requires a custom type definition.
Download Java Code Switch to PHP Code Show Output PDF Show Input XMP
* PDF/A extension schema with type:
* Demonstrate the use of a complex XMP extension schema as defined in PDF/A-1
*
* Create a PDF/A document and use the "metadata" option of begin_document() to
* supply an XMP file containing a complex XMP extension schema which requires a
* custom type definition.
*
* Required software: PDFlib/PDFlib+PDI/PPS 7.0.3
* Required data: XMP file
*/
package com.pdflib.cookbook.pdflib.pdfa;
import com.pdflib.pdflib;
import com.pdflib.PDFlibException;
public class pdfa_extension_schema_with_type {
public static void main(String argv[]) {
/* This is where the data files are. Adjust as necessary. */
String searchpath = "../input";
String outfile = "pdfa_extension_schema_with_type.pdf";
String title = "PDF/A Extension Schema with Type";
pdflib p = null;
String xmpfile = "machine_extension_schema_2.xmp";
int font;
try {
p = new pdflib();
p.set_parameter("SearchPath", searchpath);
/* This means we must check return values of load_font() etc. */
p.set_parameter("errorpolicy", "return");
check_pdflib_version(p, 7, 0, 4);
/*
* Start a PDF/A document with an XMP file supplied, containing an
* XMP extension schema. The XMP metadata will be read from the file
* and embedded in the document. PDFlib will merge several
* internally generated entries into the user-supplied XMP, e.g.
* xmp:CreateDate.
*/
if (p.begin_document(outfile,
"pdfa=PDF/A-1b:2005 metadata={filename={" + xmpfile + "}}")
== -1)
throw new Exception("Error: " + p.get_errmsg());
p.set_info("Creator", "PDFlib Cookbook");
p.set_info("Title", title + " $Revision: 1.1.2.3 $");
p.begin_page_ext(0, 0, "width=a4.height height=a4.width");
/* Font embedding is required for PDF/A */
font = p.load_font("LuciduxSans-Oblique", "unicode", "embedding");
if (font == -1)
throw new Exception("Error: " + p.get_errmsg());
p.setfont(font, 12);
p.fit_textline(
"An XMP extension schema is read from an XMP file and "
+ "the XMP metadata is embedded in the document.",
50, 400, "");
p.end_page_ext("");
p.end_document("");
}
catch (PDFlibException e) {
System.err.print("PDFlib exception occurred:\n");
System.err.print("[" + e.get_errnum() + "] " + e.get_apiname()
+ ": " + e.get_errmsg() + "\n");
}
catch (Exception e) {
System.err.println(e.getMessage());
}
finally {
if (p != null) {
p.delete();
}
}
}
/**
* Check whether the required minimum PDFlib version is available
*
* @param p
* the pdflib object
* @param major
* PDFlib major version number
* @param minor
* PDFlib minor version number
* @param revision
* PDFlib revision number
*
* @throws PDFlibException
* @throws Exception
*/
private static void check_pdflib_version(pdflib p, int major, int minor,
int revision) throws PDFlibException, Exception {
final int actualMajor = (int) p.get_value("major", 0);
final int actualMinor = (int) p.get_value("minor", 0);
final int actualRevision = (int) p.get_value("revision", 0);
/* Required minimum PDFlib version */
final int requiredVersion = major * 100 + minor * 10 + revision;
final int actualVersion = actualMajor * 100 + actualMinor * 10
+ actualRevision;
if (actualVersion < requiredVersion) {
throw new Exception("Error: PDFlib " + major + "." + minor + "."
+ revision + " or above is required");
}
}
}