Package org.wicketstuff.nashorn.resource

Class NashornResource

java.lang.Object

org.apache.wicket.request.resource.AbstractResource

org.wicketstuff.nashorn.resource.NashornResource

All Implemented Interfaces:

Serializable, IResource, IClusterable

public class NashornResource
extends AbstractResource

A nashorn resource to execute java script on server side.

Please ensure to use the NashornSecurityManager to restrict class access.

Author:

Tobias Soloschenko

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.wicket.request.resource.AbstractResource

AbstractResource.ContentRangeType, AbstractResource.ResourceResponse, AbstractResource.WriteCallback

Nested classes/interfaces inherited from interface org.apache.wicket.request.resource.IResource

IResource.Attributes

Field Summary

Fields inherited from class org.apache.wicket.request.resource.AbstractResource

CONTENT_DISPOSITION_HEADER_NAME, CONTENT_RANGE_ENDBYTE, CONTENT_RANGE_STARTBYTE, INTERNAL_HEADERS

Constructor Summary

Constructors

Constructor	Description
NashornResource(ScheduledExecutorService scheduledExecutorService, long delay, TimeUnit delayUnit, long wait, TimeUnit waitUnit, long maxScriptMemorySize)	Creates a new nashorn resource

Method Summary

Modifier and Type	Method	Description
protected ClassFilter	getClassFilter()	Gets the class filter to apply to the scripting engine
protected Writer	getErrorWriter()	Gets the writer to which error messages are going to be written to the default is to use NullWriter
protected Writer	getWriter()	Gets the writer to which print outputs are going to be written to the default is to use NullWriter
protected boolean	isDebug()	If debug is enabled
protected AbstractResource.ResourceResponse	newResourceResponse(IResource.Attributes attributes)	Executes the java script code received from the client and returns the response
protected AbstractResource.ResourceResponse	processError(Exception e)	Customize the error response sent to the client
protected void	setup(IResource.Attributes attributes, Bindings bindings)	Setup the bindings and make information available to the scripting context

Methods inherited from class org.apache.wicket.request.resource.AbstractResource

configureCache, getCachingStrategy, respond, setRequestMetaData, setRequestRangeMetaData, setResponseContentRangeHeaderFields, setResponseHeaders

Methods inherited from class java.lang.Object

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

Constructor Detail

NashornResource

public NashornResource(ScheduledExecutorService scheduledExecutorService,
                       long delay,
                       TimeUnit delayUnit,
                       long wait,
                       TimeUnit waitUnit,
                       long maxScriptMemorySize)

Creates a new nashorn resource

Parameters:

scheduledExecutorService - the scheduled executor service to run scripts

delay - the delay until a script execution is going to be terminated

delayUnit - the unit until a script execution is going to be terminated

wait - how long to w8 until the next memory check occurs

waitUnit - the unit until the next memory check occurs

maxScriptMemorySize - the memory usage the script process should use - else it will be aborted

Method Detail

newResourceResponse

protected AbstractResource.ResourceResponse newResourceResponse(IResource.Attributes attributes)

Executes the java script code received from the client and returns the response

Specified by:

newResourceResponse in class AbstractResource

processError

protected AbstractResource.ResourceResponse processError(Exception e)

Customize the error response sent to the client

Parameters:

e - the exception occurred

Returns:

the error response

setup

protected void setup(IResource.Attributes attributes,
                     Bindings bindings)

Setup the bindings and make information available to the scripting context

Parameters:

attributes - the attributes of the request

bindings - the bindings to add java objects to

getClassFilter

protected ClassFilter getClassFilter()

Gets the class filter to apply to the scripting engine

Returns:

the class filter to apply to the scripting engine

getWriter

protected Writer getWriter()

Gets the writer to which print outputs are going to be written to the default is to use NullWriter

Returns:

the writer for output

getErrorWriter

protected Writer getErrorWriter()

Gets the writer to which error messages are going to be written to the default is to use NullWriter

Returns:

the error writer

isDebug

protected boolean isDebug()

If debug is enabled

Returns:

if debug is enabled