XSLT in Practice

1
XSLT in Practice
2
Exercises

• download Apache Xalan - install it - try the
  example in Xalan-Java Overview
• http//xml.apache.org/xalan-j/
• ZVON XSLT Tutorial
• http//www.zvon.org/xxl/XSLTutorial/Output/content
  s.html
• ZVON Interactive Lab
• http//www.zvon.org9001/saxon/cgi-bin/XLab/XML/xl
  abIndex.html?stylesheetFileXSLT/xlabIndex.xslt

3
XML Serialization
4
Using XML to serialize Java Classes

• import java.io.File
• import org.simpleframework.xml.Serializer
• import org.simpleframework.xml.load.Persister
• public class StorableAsXML implements
  Serializable
• // SERIALIZATION/DESERIALIZATION
  PRIMITIVES
• public void persist(File f)
• Serializer serializer new Persister()
• try
• serializer.write(this, f)
• catch (Exception ex)
• ex.printStackTrace()

import java.io.Serializable public class X
implements Serializable FileOutputStream
fosnull ObjectOutputStream oosnull
try fosnew FileOutputStream(f)
oos new ObjectOutputStream(fos)
oos.writeObject(this) catch
(IOException ex) ex.printStackTrace()

// using Simple XML Serialization //
http//simple.sourceforge.net/download/stream/doc/
tutorial/tutorial.php
5
Using XML to serialize Java Classes

• public StorableAsXML resume(File f, Classlt?
  extends StorableAsXMLgt c)
• StorableAsXML retval null
• try
• Serializer serializer new
  Persister()
• retval (StorableAsXML)serializer.rea
  d(c, f)
• catch (Exception ex)
• ex.printStackTrace()
• return retval

• FileInputStream fisnull
• ObjectInputStream oisnull
• try
• fisnew FileInputStream(f)
• ois new ObjectInputStream(fis)
• retval(StorableAsXML)ois.readObject()
  
• catch (Exception ex)
• ex.printStackTrace()

6
Using XML to serialize Java Classes

• public class Lecture extends StorableAsXML
  implements Serializable
• private SetltStringgt lecturersnull //non
  serialized field
• _at_Element(name"NAME")
• public String lectureNamenull
• _at_Element(name"DATE")
• private Date datenull
• _at_Element(name"SEQUENCE_NUMBER")
• private int sequenceNumber-1 //-1 means not
  initialized
• _at_Element(name"COURSE_HOME")
• private String courseRefnull //Home per il
  corso
• _at_Element(name"LECTURE_HOME")
• private String dirNamenull
• _at_Element(name"LECTURER",requiredfalse)
• private String lecturernull
• _at_Element(name"VIDEO",requiredfalse)
• private String videoFileNamenull
• _at_Element(name"VIDEO_LENGTH",requiredfalse)
• private String videoLenghtnull //null
  Video does not exist
• _at_Element(name"HAS_POST_PROCESSING")

public Lecture() // needed to be a bean //for
XMLSerialization
7
Generated XML

• ltLECTUREgt
• ltNAMEgtgglt/NAMEgt
• ltDATEgt2008-09-05 162034.365 CESTlt/DATEgt
• ltSEQUENCE_NUMBERgt1lt/SEQUENCE_NUMBERgt
• ltCOURSE_HOMEgt/Users/ronchet/_LODE/COURSES/Hh_20
  08
• lt/COURSE_HOMEgt
• ltLECTURE_HOMEgt01_Gg_2008-09-05lt/LECTURE_HOMEgt
• ltLECTURERgtA.B.lt/LECTURERgt
• ltHAS_POST_PROCESSINGgtfalselt/HAS_POST_PROCESSING
  gt
• lt/LECTUREgt

8
Using XML to serialize Java Classes

• _at_Root(name"COURSE")
• public class Course extends StorableAsXML
  implements Serializable
• _at_Element(name"NAME")
• private String courseNamenull
• _at_Element(name"YEAR")
• private String yearnull
• _at_Element(name"COURSE_HOME")
• private String fullPathnull
• _at_ElementList(name"LECTURES",entry"LECTURE")
• private SetltStringgt lecturesnew
  TreeSetltStringgt()
• _at_ElementList(name"TEACHERS",entry"TEACHER_NAME
  ")
• private SetltStringgt teachersnew
  TreeSetltStringgt()

ltCOURSEgt ltNAMEgthhlt/NAMEgt ltYEARgt2008lt/YEARgt
ltCOURSE_HOMEgt/Hh_2008lt/COURSE_HOMEgt
ltLECTURES class"java.util.TreeSet"gt
ltLECTUREgt01_Gg_2008-09-05lt/LECTUREgt
lt/LECTURESgt ltTEACHERS class"java.util.TreeSet"
gt ltTEACHER_NAMEgtA.B.lt/TEACHER_NAMEgt
ltTEACHER_NAMEgtC.D.lt/TEACHER_NAMEgt
lt/TEACHERSgt lt/COURSEgt
9
Javadoc

• http//simple.sourceforge.net/download/stream/doc/
  javadoc/org/simpleframework/xml/package-summary.ht
  ml