Package eu.europa.esig.dss.spi.client.http

Interface DataLoader

All Superinterfaces:

Serializable

All Known Implementing Classes:

CommonsDataLoader, FileCacheDataLoader, IgnoreDataLoader, MemoryDataLoader, NativeHTTPDataLoader, OCSPDataLoader, TimestampDataLoader

public interface DataLoader
extends Serializable

Component that allows to retrieve the data using any protocol: HTTP, HTTPS, FTP, LDAP.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	DataLoader.DataAndUrl	This is an internal class used to model the couple data and url used to obtain this data.

Method Summary

Modifier and Type	Method	Description
byte[]	get(String url)	Execute a HTTP GET operation.
byte[]	get(String url, boolean refresh)	Execute a HTTP GET operation with indication concerning the mandatory nature of the operation.
DataLoader.DataAndUrl	get(List<String> urlStrings)	Execute a HTTP GET operation.
byte[]	post(String url, byte[] content)	Executes a HTTP POST operation
void	setContentType(String contentType)	This allows to set the content type.

Method Detail

get

byte[] get(String url)

Execute a HTTP GET operation.

Parameters:

url - the url to access

Returns:

byte array of obtained data or null

get

DataLoader.DataAndUrl get(List<String> urlStrings)

Execute a HTTP GET operation. This method is used when many URls are available to access the same resource. The operation stops after the first successful download.

Parameters:

urlStrings - List of Strings representing the URLs to be used in sequential way to obtain the data.

Returns:

DataAndUrl representing the array of obtained data and used url, or null

get

byte[] get(String url,
           boolean refresh)

Execute a HTTP GET operation with indication concerning the mandatory nature of the operation.

Parameters:

url - to access

refresh - if true indicates that the cached data should be refreshed

Returns:

byte array of obtained data or null

post

byte[] post(String url,
            byte[] content)

Executes a HTTP POST operation

Parameters:

url - to access

content - the content to post

Returns:

byte array of obtained data

setContentType

void setContentType(String contentType)

This allows to set the content type. Example: Content-Type "application/ocsp-request"

Parameters:

contentType - to set the Content-Type