org.apache.velocity.runtime.resource.loader

Class ResourceLoader

public abstract class ResourceLoader extends Object

This is abstract class the all text resource loaders should extend.

Version: $Id: ResourceLoader.java,v 1.14.4.1 2004/03/03 23:23:02 geirm Exp $

Author: Jason van Zyl Geir Magnusson Jr.

Field Summary
protected String	className Class name for this loader, for logging/debuggin purposes.
protected boolean	isCachingOn Does this loader want templates produced with it cached in the Runtime.
protected long	modificationCheckInterval This property will be passed on to the templates that are created with this loader.
protected RuntimeServices	rsvc

Method Summary
void	commonInit(RuntimeServices rs, ExtendedProperties configuration) This initialization is used by all resource loaders and must be called to set up common properties shared by all resource loaders
String	getClassName() Return the class name of this resource Loader
abstract long	getLastModified(Resource resource) Get the last modified time of the InputStream source that was used to create the template.
long	getModificationCheckInterval() Get the interval at which the InputStream source should be checked for modifications.
abstract InputStream	getResourceStream(String source) Get the InputStream that the Runtime will parse to create a template.
abstract void	init(ExtendedProperties configuration) Initialize the template loader with a a resources class.
boolean	isCachingOn() The Runtime uses this to find out whether this template loader wants the Runtime to cache templates created with InputStreams provided by this loader.
abstract boolean	isSourceModified(Resource resource) Given a template, check to see if the source of InputStream has been modified.
void	setCachingOn(boolean value) Set the caching state.
void	setModificationCheckInterval(long modificationCheckInterval) Set the interval at which the InputStream source should be checked for modifications.

Field Detail

className

protected String className

Class name for this loader, for logging/debuggin purposes.

isCachingOn

protected boolean isCachingOn

Does this loader want templates produced with it cached in the Runtime.

modificationCheckInterval

protected long modificationCheckInterval

This property will be passed on to the templates that are created with this loader.

Method Detail

commonInit

public void commonInit(RuntimeServices rs, ExtendedProperties configuration)

This initialization is used by all resource loaders and must be called to set up common properties shared by all resource loaders

getClassName

public String getClassName()

Return the class name of this resource Loader

getLastModified

public abstract long getLastModified(Resource resource)

Get the last modified time of the InputStream source that was used to create the template. We need the template here because we have to extract the name of the template in order to locate the InputStream source.

getModificationCheckInterval

public long getModificationCheckInterval()

Get the interval at which the InputStream source should be checked for modifications.

getResourceStream

public abstract InputStream getResourceStream(String source)

Get the InputStream that the Runtime will parse to create a template.

init

public abstract void init(ExtendedProperties configuration)

Initialize the template loader with a a resources class.

isCachingOn

public boolean isCachingOn()

The Runtime uses this to find out whether this template loader wants the Runtime to cache templates created with InputStreams provided by this loader.

isSourceModified

public abstract boolean isSourceModified(Resource resource)

Given a template, check to see if the source of InputStream has been modified.

setCachingOn

public void setCachingOn(boolean value)

Set the caching state. If true, then this loader would like the Runtime to cache templates that have been created with InputStreams provided by this loader.

setModificationCheckInterval

public void setModificationCheckInterval(long modificationCheckInterval)

Set the interval at which the InputStream source should be checked for modifications.