Package org.apache.wicket.request.resource

Class BaseDataResource<T>

java.lang.Object

org.apache.wicket.request.resource.AbstractResource

org.apache.wicket.request.resource.BaseDataResource<T>

Type Parameters:

T - The type of the data this resource can deliver

All Implemented Interfaces:

Serializable, IResource, IClusterable

Direct Known Subclasses:

ByteArrayResource, CharSequenceResource

public abstract class BaseDataResource<T>
extends AbstractResource

An abstract resource that can deliver static data - passed to the constructor, or dynamic - returned by getData(org.apache.wicket.request.resource.IResource.Attributes)

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
BaseDataResource(String contentType)	Creates a BaseDataResource which will provide its data dynamically with getData(org.apache.wicket.request.resource.IResource.Attributes)
BaseDataResource(String contentType, T data)	Creates a Resource from the given data with its content type
BaseDataResource(String contentType, T data, String filename)	Creates a Resource from the given data with its content type and filename

Method Summary

Modifier and Type	Method	Description
protected void	configureResponse(AbstractResource.ResourceResponse response, IResource.Attributes attributes)	Post-configures the given response, e.g.
protected T	getData(IResource.Attributes attributes)	Gets the data for this resource.
protected String	getFilename()	Returns the filename that will be set as the Content-Disposition header.
protected abstract Long	getLength(T data)
protected AbstractResource.ResourceResponse	newResourceResponse(IResource.Attributes attributes)	Override this method to return a AbstractResource.ResourceResponse for the request.
protected abstract void	writeData(Response response, T data)	Writes the given data to the response

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 Details

BaseDataResource

public BaseDataResource(String contentType)

Creates a BaseDataResource which will provide its data dynamically with getData(org.apache.wicket.request.resource.IResource.Attributes)

Parameters:

contentType - The Content type of the array.

BaseDataResource

public BaseDataResource(String contentType,
 T data)

Creates a Resource from the given data with its content type

Parameters:

contentType - The Content type of the array.

data - The data

BaseDataResource

public BaseDataResource(String contentType,
 T data,
 String filename)

Creates a Resource from the given data with its content type and filename

Parameters:

contentType - The Content type of the array.

data - The data

filename - The filename that will be set as the Content-Disposition header.

Method Details

configureResponse

protected void configureResponse(AbstractResource.ResourceResponse response,
 IResource.Attributes attributes)

Post-configures the given response, e.g. set/override response headers.

Parameters:

response - The response to configure

attributes - The request attributes (web request, web response, parameters)

newResourceResponse

protected AbstractResource.ResourceResponse newResourceResponse(IResource.Attributes attributes)

Description copied from class: AbstractResource

Override this method to return a AbstractResource.ResourceResponse for the request.

Specified by:

newResourceResponse in class AbstractResource

Parameters:

attributes - request attributes

Returns:

resource data instance

writeData

protected abstract void writeData(Response response,
 T data)

Writes the given data to the response

Parameters:

response - The response to write to

data - The data to write

getLength

protected abstract Long getLength(T data)

Parameters:

data - The data to be written

Returns:

The length of the data to be written. Used to set "Content-Length" response header

getData

protected T getData(IResource.Attributes attributes)

Gets the data for this resource.

Parameters:

attributes - the context bringing the request, response and the parameters

Returns:

The data for this resource

getFilename

protected String getFilename()

Returns the filename that will be set as the Content-Disposition header.

Returns:

the filename