Package groovy.text.markup

Class MarkupTemplateEngine.CachingTemplateResolver

java.lang.Object

groovy.text.markup.MarkupTemplateEngine.DefaultTemplateResolver

groovy.text.markup.MarkupTemplateEngine.CachingTemplateResolver

All Implemented Interfaces:

TemplateResolver

Enclosing class:

MarkupTemplateEngine

public static class MarkupTemplateEngine.CachingTemplateResolver
extends MarkupTemplateEngine.DefaultTemplateResolver

A template resolver which avoids calling ClassLoader.getResource(String) if a template path already has been queried before. This improves performance if caching is enabled in the configuration.

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<String,URL>	cache
protected boolean	useCache

Constructor Summary

Constructors

Constructor	Description
CachingTemplateResolver()	Creates a new caching template resolver using a concurrent hash map as the backing cache.
CachingTemplateResolver(Map<String,URL> cache)	Creates a new caching template resolver.

Method Summary

Modifier and Type	Method	Description
void	configure(ClassLoader templateClassLoader, TemplateConfiguration configuration)	This method is called once the template engine is initialized, providing the resolver with the template engine configuration and its template class loader.
URL	resolveTemplate(String templatePath)	Resolvers must implement this method in order to resolve a template, given a template path.

Methods inherited from class java.lang.Object

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

Field Detail

cache

protected final Map<String,URL> cache

useCache

protected boolean useCache

Constructor Detail

CachingTemplateResolver

public CachingTemplateResolver(Map<String,URL> cache)

Creates a new caching template resolver. The cache implementation being used depends on the use of the template engine. If multiple templates can be rendered in parallel, it must be using a thread-safe cache.

Parameters:

cache - the backing cache

CachingTemplateResolver

public CachingTemplateResolver()

Creates a new caching template resolver using a concurrent hash map as the backing cache.

Method Detail

configure

public void configure(ClassLoader templateClassLoader,
                      TemplateConfiguration configuration)

Description copied from interface: TemplateResolver

This method is called once the template engine is initialized, providing the resolver with the template engine configuration and its template class loader.

Specified by:

configure in interface TemplateResolver

Overrides:

configure in class MarkupTemplateEngine.DefaultTemplateResolver

Parameters:

templateClassLoader - the classloader where templates will be searched for

configuration - the configuration of the template engine

resolveTemplate

public URL resolveTemplate(String templatePath)
                    throws IOException

Description copied from interface: TemplateResolver

Resolvers must implement this method in order to resolve a template, given a template path. They must return a valid URL or an IOException.

Specified by:

resolveTemplate in interface TemplateResolver

Overrides:

resolveTemplate in class MarkupTemplateEngine.DefaultTemplateResolver

Parameters:

templatePath - path to the template

Returns:

the template URL, that will be used to load the template

Throws:

IOException