org.apache.sling.scripting.core

Class ScriptHelper

java.lang.Object

org.apache.sling.scripting.core.ScriptHelper

All Implemented Interfaces:

SlingScriptHelper

public class ScriptHelper
extends java.lang.Object
implements SlingScriptHelper

Simple script helper providing access to the (wrapped) response, the on-demand writer and a simple API for request inclusion. Instances of this class are made available to the scripts as the global sling variable. Client code using this object should take care to call cleanup() when the object is not used anymore!

Field Summary

Fields

Modifier and Type	Field and Description
protected org.osgi.framework.BundleContext	bundleContext The bundle context.
protected java.util.List<org.osgi.framework.ServiceReference>	references The list of references - we don't need to synchronize this as we are running in one single request.
protected java.util.Map<java.lang.String,java.lang.Object>	services A map of found services.

Constructor Summary

Constructors

Constructor and Description
ScriptHelper(org.osgi.framework.BundleContext ctx, SlingScript script)
ScriptHelper(org.osgi.framework.BundleContext ctx, SlingScript script, SlingHttpServletRequest request, SlingHttpServletResponse response)

Method Summary

Modifier and Type	Method and Description
void	cleanup() Clean up this instance.
void	dispose() Deprecated.
void	forward(Resource resource) Same as SlingScriptHelper.forward(Resource,RequestDispatcherOptions), but using empty options.
void	forward(Resource resource, RequestDispatcherOptions options) Helper method to forward the request to a Servlet or script for the given resource and options.
void	forward(Resource resource, java.lang.String options) Helper method to forward the request to a Servlet or script for the given resource and requestDispatcherOptions.
void	forward(java.lang.String path) Same as SlingScriptHelper.forward(String,RequestDispatcherOptions), but using empty options.
void	forward(java.lang.String path, RequestDispatcherOptions options) Helper method to forward the request to a Servlet or script for the given path and options.
void	forward(java.lang.String path, java.lang.String options) Helper method to forward the request to a Servlet or script for the given path and requestDispatcherOptions.
SlingHttpServletRequest	getRequest() Returns the SlingHttpServletRequest representing the input of the request.
SlingHttpServletResponse	getResponse() Returns the SlingHttpServletResponse representing the output of the request.
SlingScript	getScript() Returns the SlingScript being called to handle the request.
<ServiceType> ServiceType	getService(java.lang.Class<ServiceType> type) Lookup a single service.
<ServiceType> ServiceType[]	getServices(java.lang.Class<ServiceType> serviceType, java.lang.String filter) Lookup one or several services.
void	include(Resource resource) Same as SlingScriptHelper.include(Resource,RequestDispatcherOptions), but using empty options.
void	include(Resource resource, RequestDispatcherOptions options) Helper method to include the result of processing the request for the given resource and options.
void	include(Resource resource, java.lang.String options) Helper method to include the result of processing the request for the given resource and requestDispatcherOptions.
void	include(java.lang.String path) Same as SlingScriptHelper.include(String,RequestDispatcherOptions), but using empty options.
void	include(java.lang.String path, RequestDispatcherOptions options) Helper method to include the result of processing the request for the given path and options.
void	include(java.lang.String path, java.lang.String options) Helper method to include the result of processing the request for the given path and requestDispatcherOptions.

Methods inherited from class java.lang.Object

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

Field Detail

bundleContext

protected final org.osgi.framework.BundleContext bundleContext

The bundle context.

references

protected java.util.List<org.osgi.framework.ServiceReference> references

The list of references - we don't need to synchronize this as we are running in one single request.

services

protected java.util.Map<java.lang.String,java.lang.Object> services

A map of found services.

Constructor Detail

ScriptHelper

public ScriptHelper(org.osgi.framework.BundleContext ctx,
                    SlingScript script)

ScriptHelper

public ScriptHelper(org.osgi.framework.BundleContext ctx,
                    SlingScript script,
                    SlingHttpServletRequest request,
                    SlingHttpServletResponse response)

Method Detail

getScript

public SlingScript getScript()

Description copied from interface: SlingScriptHelper

Returns the SlingScript being called to handle the request.

Specified by:

getScript in interface SlingScriptHelper

Returns:

The script

See Also:

SlingScriptHelper.getScript()

getRequest

public SlingHttpServletRequest getRequest()

Description copied from interface: SlingScriptHelper

Returns the SlingHttpServletRequest representing the input of the request.

Specified by:

getRequest in interface SlingScriptHelper

Returns:

The request

See Also:

SlingScriptHelper.getRequest()

getResponse

public SlingHttpServletResponse getResponse()

Description copied from interface: SlingScriptHelper

Returns the SlingHttpServletResponse representing the output of the request.

Specified by:

getResponse in interface SlingScriptHelper

Returns:

The response

See Also:

SlingScriptHelper.getResponse()

include

public void include(java.lang.String path)

Description copied from interface: SlingScriptHelper

Same as SlingScriptHelper.include(String,RequestDispatcherOptions), but using empty options.

Specified by:

include in interface SlingScriptHelper

Parameters:

path - The path to include

See Also:

SlingScriptHelper.include(java.lang.String)

include

public void include(java.lang.String path,
                    java.lang.String options)

Description copied from interface: SlingScriptHelper

Helper method to include the result of processing the request for the given path and requestDispatcherOptions. This method is intended to be implemented as follows:

 RequestDispatcher dispatcher = getRequest().getRequestDispatcher(path,
     "option:xyz");
 if (dispatcher != null) {
     dispatcher.include(getRequest(), getResponse());
 }
 

This method creates a RequestDispatcherOptions object by calling the RequestDispatcherOptions(String) constructor.

Specified by:

include in interface SlingScriptHelper

Parameters:

path - The path to the resource to include.

options - influence the rendering of the included Resource

See Also:

SlingScriptHelper.include(java.lang.String, java.lang.String)

include

public void include(java.lang.String path,
                    RequestDispatcherOptions options)

Description copied from interface: SlingScriptHelper

Helper method to include the result of processing the request for the given path and options. This method is intended to be implemented as follows:

 RequestDispatcherOptions opts = new RequestDispatcherOptions();
 opts.put("option", "xyz");
 RequestDispatcher dispatcher = getRequest().getRequestDispatcher(path, opts);
 if (dispatcher != null) {
     dispatcher.include(getRequest(), getResponse());
 }
 

Specified by:

include in interface SlingScriptHelper

Parameters:

path - The path to the resource to include.

options - influence the rendering of the included Resource

See Also:

SlingScriptHelper.include(java.lang.String, org.apache.sling.api.request.RequestDispatcherOptions)

forward

public void forward(java.lang.String path)

Description copied from interface: SlingScriptHelper

Same as SlingScriptHelper.forward(String,RequestDispatcherOptions), but using empty options.

Specified by:

forward in interface SlingScriptHelper

Parameters:

path - The path to forward to

See Also:

SlingScriptHelper.forward(java.lang.String)

forward

public void forward(java.lang.String path,
                    java.lang.String options)

Description copied from interface: SlingScriptHelper

Helper method to forward the request to a Servlet or script for the given path and requestDispatcherOptions. This method is intended to be implemented as follows:

 RequestDispatcher dispatcher = getRequest().getRequestDispatcher(path,
     "option:xyz");
 if (dispatcher != null) {
     dispatcher.forward(getRequest(), getResponse());
 }
 

This method creates a RequestDispatcherOptions object by calling the RequestDispatcherOptions(String) constructor.

Specified by:

forward in interface SlingScriptHelper

Parameters:

path - The path to the resource to forward to.

options - influence the rendering of the forwarded Resource

See Also:

SlingScriptHelper.forward(java.lang.String, java.lang.String)

forward

public void forward(java.lang.String path,
                    RequestDispatcherOptions options)

Description copied from interface: SlingScriptHelper

Helper method to forward the request to a Servlet or script for the given path and options. This method is intended to be implemented as follows:

 RequestDispatcherOptions opts = new RequestDispatcherOptions();
 opts.put("option", "xyz");
 RequestDispatcher dispatcher = getRequest().getRequestDispatcher(path, opts);
 if (dispatcher != null) {
     dispatcher.forward(getRequest(), getResponse());
 }
 

Specified by:

forward in interface SlingScriptHelper

Parameters:

path - The path to the resource to forward the request to.

options - influence the rendering of the forwarded Resource

See Also:

SlingScriptHelper.forward(java.lang.String, org.apache.sling.api.request.RequestDispatcherOptions)

dispose

@Deprecated
public void dispose()

Deprecated.

Description copied from interface: SlingScriptHelper

Dispose the helper. This method can be used to clean up the script helper after the script is run.

Specified by:

dispose in interface SlingScriptHelper

See Also:

SlingScriptHelper.dispose()

getService

public <ServiceType> ServiceType getService(java.lang.Class<ServiceType> type)

Description copied from interface: SlingScriptHelper

Lookup a single service.

If multiple such services exist, the service with the highest ranking (as specified in its Constants.SERVICE_RANKING property) is returned. If there is a tie in ranking, the service with the lowest service ID (as specified in its Constants.SERVICE_ID property); that is, the service that was registered first is returned.

This is equal to the semantics from BundleContext.getServiceReference(Class).

Specified by:

getService in interface SlingScriptHelper

Type Parameters:

ServiceType - The type (interface) of the service.

Parameters:

type - The type (interface) of the service.

Returns:

The service instance, or null if no services are registered which implement the specified class.

See Also:

SlingScriptHelper.getService(java.lang.Class)

getServices

public <ServiceType> ServiceType[] getServices(java.lang.Class<ServiceType> serviceType,
                                               java.lang.String filter)
                                        throws InvalidServiceFilterSyntaxException

Description copied from interface: SlingScriptHelper

Lookup one or several services.

The returned array is sorted descending by service ranking (i.e. the service with the highest ranking is returned first). If there is a tie in ranking, the service with the lowest service ID (as specified in its Constants.SERVICE_ID property); that is, the service that was registered first is returned first.

Specified by:

getServices in interface SlingScriptHelper

Type Parameters:

ServiceType - The type (interface) of the service.

Parameters:

serviceType - The type (interface) of the service.

filter - An optional filter (LDAP-like, see OSGi spec)

Returns:

An array of services objects or null.

Throws:

InvalidServiceFilterSyntaxException - If the filter string is not a valid OSGi service filter string.

See Also:

SlingScriptHelper.getServices(java.lang.Class, java.lang.String)

cleanup

public void cleanup()

Clean up this instance.

forward

public void forward(Resource resource)

Description copied from interface: SlingScriptHelper

Same as SlingScriptHelper.forward(Resource,RequestDispatcherOptions), but using empty options.

Specified by:

forward in interface SlingScriptHelper

Parameters:

resource - The resource to forward to.

See Also:

SlingScriptHelper.forward(org.apache.sling.api.resource.Resource)

forward

public void forward(Resource resource,
                    java.lang.String options)

Description copied from interface: SlingScriptHelper

Helper method to forward the request to a Servlet or script for the given resource and requestDispatcherOptions. This method is intended to be implemented as follows:

 RequestDispatcher dispatcher = getRequest().getRequestDispatcher(resource,
     "option:xyz");
 if (dispatcher != null) {
     dispatcher.forward(getRequest(), getResponse());
 }
 

This method creates a RequestDispatcherOptions object by calling the RequestDispatcherOptions(String) constructor.

Specified by:

forward in interface SlingScriptHelper

Parameters:

resource - The resource to forward to.

options - influence the rendering of the forwarded Resource

See Also:

SlingScriptHelper.forward(org.apache.sling.api.resource.Resource, java.lang.String)

forward

public void forward(Resource resource,
                    RequestDispatcherOptions options)

Description copied from interface: SlingScriptHelper

Helper method to forward the request to a Servlet or script for the given resource and options. This method is intended to be implemented as follows:

 RequestDispatcherOptions opts = new RequestDispatcherOptions();
 opts.put("option", "xyz");
 RequestDispatcher dispatcher = getRequest().getRequestDispatcher(resource, opts);
 if (dispatcher != null) {
     dispatcher.forward(getRequest(), getResponse());
 }
 

Specified by:

forward in interface SlingScriptHelper

Parameters:

resource - The resource to forward the request to.

options - influence the rendering of the forwarded Resource

See Also:

SlingScriptHelper.forward(org.apache.sling.api.resource.Resource, org.apache.sling.api.request.RequestDispatcherOptions)

include

public void include(Resource resource)

Description copied from interface: SlingScriptHelper

Same as SlingScriptHelper.include(Resource,RequestDispatcherOptions), but using empty options.

Specified by:

include in interface SlingScriptHelper

Parameters:

resource - The resource to include

See Also:

SlingScriptHelper.forward(org.apache.sling.api.resource.Resource)

include

public void include(Resource resource,
                    java.lang.String options)

Description copied from interface: SlingScriptHelper

Helper method to include the result of processing the request for the given resource and requestDispatcherOptions. This method is intended to be implemented as follows:

 RequestDispatcher dispatcher = getRequest().getRequestDispatcher(resource,
     "option:xyz");
 if (dispatcher != null) {
     dispatcher.include(getRequest(), getResponse());
 }
 

This method creates a RequestDispatcherOptions object by calling the RequestDispatcherOptions(String) constructor.

Specified by:

include in interface SlingScriptHelper

Parameters:

resource - The resource to include.

options - influence the rendering of the included Resource

See Also:

SlingScriptHelper.include(org.apache.sling.api.resource.Resource, java.lang.String)

include

public void include(Resource resource,
                    RequestDispatcherOptions options)

Description copied from interface: SlingScriptHelper

Helper method to include the result of processing the request for the given resource and options. This method is intended to be implemented as follows:

 RequestDispatcherOptions opts = new RequestDispatcherOptions();
 opts.put("option", "xyz");
 RequestDispatcher dispatcher = getRequest().getRequestDispatcher(resource, opts);
 if (dispatcher != null) {
     dispatcher.include(getRequest(), getResponse());
 }
 

Specified by:

include in interface SlingScriptHelper

Parameters:

resource - The resource to include.

options - influence the rendering of the included Resource

See Also:

SlingScriptHelper.include(org.apache.sling.api.resource.Resource, org.apache.sling.api.request.RequestDispatcherOptions)