com.oroad.stxx.transform
Class AbstractXSLTransformer

java.lang.Object
  com.oroad.stxx.transform.AbstractSAXTransformer
      com.oroad.stxx.transform.AbstractXSLTransformer

All Implemented Interfaces:

Transformer

Direct Known Subclasses:

CachedFOPTransformer, CachedXSLTransformer

public abstract class AbstractXSLTransformer

extends AbstractSAXTransformer

This class provides common methods and variables used by transformers that convert stxx documents into SAX events.

Author:

Don Brown

Field Summary

protected boolean

autoReloadTemplates If stylesheets will be automatically reloaded

Fields inherited from class com.oroad.stxx.transform.AbstractSAXTransformer

allowURLDebug, builder, cache, context, debugXMLPath, expiryTime, log, name, resolveFromTemplatePath, rules, transFactory, writeXMLDebug

Fields inherited from interface com.oroad.stxx.transform.Transformer

PROPS_PREFIX

Constructor Summary

AbstractXSLTransformer()

Method Summary

protected javax.xml.transform.Templates	getTemplates(javax.xml.transform.sax.SAXTransformerFactory factory, java.lang.String path) Gets a transformer from a Templates.
protected javax.xml.transform.Templates	getTemplatesFromCache(java.lang.String path) Gets a Templates from cache.
void	init(java.lang.String name, StxxProperties props, javax.servlet.ServletContext context, BuilderRules rules) Initializes the transformer
protected javax.xml.transform.sax.TransformerHandler[]	loadHandlers(java.util.List paths, javax.servlet.ServletContext context) Loads the list of TransformationHandlers
protected void	putTemplates(javax.xml.transform.Templates templates, java.lang.String id, long lastmod) Puts a Templates in cache.

Methods inherited from class com.oroad.stxx.transform.AbstractSAXTransformer

getFactory, setCache, transform, writeXML

Methods inherited from class java.lang.Object

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

Field Detail

autoReloadTemplates

protected boolean autoReloadTemplates

If stylesheets will be automatically reloaded

Constructor Detail

AbstractXSLTransformer

public AbstractXSLTransformer()

Method Detail

init

public void init(java.lang.String name,
                 StxxProperties props,
                 javax.servlet.ServletContext context,
                 BuilderRules rules)

Initializes the transformer

Specified by:

init in interface Transformer

Overrides:

init in class AbstractSAXTransformer

Parameters:

name - The name of the transformer

props - The properties

context - The servlet context

rules - The builder rules

getTemplates

protected javax.xml.transform.Templates getTemplates(javax.xml.transform.sax.SAXTransformerFactory factory,
                                                     java.lang.String path)

Gets a transformer from a Templates. It first tries to get a cached Templates. If one cannot be found, it creates a new Templates, stores it in cache, and returns its transofmer.

Parameters:

factory - The SAX transformer factory

Returns:

The found templates

getTemplatesFromCache

protected javax.xml.transform.Templates getTemplatesFromCache(java.lang.String path)

Gets a Templates from cache. If one cannot be found, returns null.

Parameters:

path - The path to the template file

Returns:

The templates value

putTemplates

protected void putTemplates(javax.xml.transform.Templates templates,
                            java.lang.String id,
                            long lastmod)

Puts a Templates in cache.

Parameters:

templates - The Templates to store in cache

id - The unique identifier of the stylesheet

lastmod - The last modified timestamp

loadHandlers

protected javax.xml.transform.sax.TransformerHandler[] loadHandlers(java.util.List paths,
                                                                    javax.servlet.ServletContext context)
                                                             throws TransformerException,
                                                                    javax.xml.transform.TransformerConfigurationException

Loads the list of TransformationHandlers

Parameters:

paths - A list of XSL file paths

context - The servlet context used to resolve paths

Returns:

An array of TransformerHandlers

Throws:

TransformerException

javax.xml.transform.TransformerConfigurationException