dk.netarkivet.viewerproxy
Class GetDataResolver

java.lang.Object
  dk.netarkivet.viewerproxy.CommandResolver
      dk.netarkivet.viewerproxy.GetDataResolver

All Implemented Interfaces:

URIResolver, URIResolverHandler

public class GetDataResolver
extends CommandResolver

Wrapper for an URIResolver, which retrieves raw data on given specific URLs, and forwards all others to the wrapped handler. This allows you to get metadata, individual files, and individual records.

Field Summary

(package private) ViewerArcRepositoryClient	client The client for the arc repository.
static java.lang.String	FILE_NAME_PARAMETER Parameter defining the file to return the getting files or records.
static java.lang.String	FILE_OFFSET_PARAMETER Parameter defining the offset into an ARC file for getting a record.
static java.lang.String	GET_FILE_COMMAND Command for getting a single file from the bitarchive.
static java.lang.String	GET_METADATA_COMMAND Command for getting all metadata for a single job.
static java.lang.String	GET_RECORD_COMMAND Command for getting a specific record (file+offset) from an ARC file in the bitarchive.
static java.lang.String	JOB_ID_PARAMETER Parameter for ids of jobs to get metadata for.

Fields inherited from class dk.netarkivet.viewerproxy.CommandResolver

ur, VIEWERPROXY_COMMAND_NAME

Fields inherited from interface dk.netarkivet.viewerproxy.URIResolver

NOT_FOUND

Constructor Summary

GetDataResolver(URIResolver ur, ViewerArcRepositoryClient client)
Make a new GetDataResolver, which calls commands on the arcrepository, and forwards all other requests to the given URIResolver.

Method Summary

protected boolean

executeCommand(Request request, Response response) Handles parsing of the URL and delegating to relevant methods for known commands.

Methods inherited from class dk.netarkivet.viewerproxy.CommandResolver

isCommandHostRequest, lookup, setURIResolver

Methods inherited from class java.lang.Object

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

Field Detail

client

ViewerArcRepositoryClient client

The client for the arc repository.

GET_FILE_COMMAND

public static final java.lang.String GET_FILE_COMMAND

Command for getting a single file from the bitarchive.

See Also:

Constant Field Values

GET_RECORD_COMMAND

public static final java.lang.String GET_RECORD_COMMAND

Command for getting a specific record (file+offset) from an ARC file in the bitarchive.

See Also:

Constant Field Values

GET_METADATA_COMMAND

public static final java.lang.String GET_METADATA_COMMAND

Command for getting all metadata for a single job.

See Also:

Constant Field Values

FILE_NAME_PARAMETER

public static final java.lang.String FILE_NAME_PARAMETER

Parameter defining the file to return the getting files or records.

See Also:

Constant Field Values

FILE_OFFSET_PARAMETER

public static final java.lang.String FILE_OFFSET_PARAMETER

Parameter defining the offset into an ARC file for getting a record.

See Also:

Constant Field Values

JOB_ID_PARAMETER

public static final java.lang.String JOB_ID_PARAMETER

Parameter for ids of jobs to get metadata for.

See Also:

Constant Field Values

Constructor Detail

GetDataResolver

public GetDataResolver(URIResolver ur,
                       ViewerArcRepositoryClient client)

Make a new GetDataResolver, which calls commands on the arcrepository, and forwards all other requests to the given URIResolver.

Parameters:

ur - The URIResolver to handle all other uris.

client - the arcrepository client

Throws:

ArgumentNotValid - if either argument is null.

Method Detail

executeCommand

protected boolean executeCommand(Request request,
                                 Response response)

Handles parsing of the URL and delegating to relevant methods for known commands. Commands are: getFile - params: fileName - effect: get the full file specified by the parameter from the bitarchive. getRecord - params: fileName,offset - effect: get a single ARC record from the bitarchive. getMetadata - params: jobID - effect: get all metadata for a single job from the bitarchive.

Specified by:

executeCommand in class CommandResolver

Parameters:

request - The request to check

response - The response to give command results to if it is a command

Returns:

Whether this was a command URL

Throws:

IOFailure - in any trouble.