org.archive.wayback.requestparser

Class BaseRequestParser

java.lang.Object

org.archive.wayback.requestparser.BaseRequestParser

All Implemented Interfaces:

RequestParser

Direct Known Subclasses:

CompositeRequestParser, WrappedRequestParser

public abstract class BaseRequestParser
extends Object
implements RequestParser

Abstract implementation of the RequestParser interface, which provides some convenience methods for accessing data in Map's, and also allows for configuring maxRecords, and earliest and latest timestamp strings. Subclasses must still implement parse().

Version:

$Date$, $Revision$

Author:

brad

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_MAX_RECORDS Default maximum number of records to assume, overridden by configuration, when not specified in the client request
static String	QUERY_BASE String path matching a query request, by form or OpenSearch
static String	REPLAY_BASE String path matching a replay request, by form or OpenSearch
static String	XQUERY_BASE String path matching a query request, by form or OpenSearch, indicating user requests XML data in response

Constructor Summary

Constructors

Constructor and Description
BaseRequestParser()

Method Summary

Methods

Modifier and Type	Method and Description
String	getEarliestTimestamp()
String	getLatestTimestamp()
int	getMaxRecords()
abstract WaybackRequest	parse(javax.servlet.http.HttpServletRequest httpRequest, AccessPoint wbContext) attempt to transform an incoming HttpServletRequest into a WaybackRequest object. returns null if there is missing information.
void	setEarliestTimestamp(String timestamp)
void	setLatestTimestamp(String timestamp)
void	setMaxRecords(int maxRecords)

Methods inherited from class java.lang.Object

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

Field Detail

QUERY_BASE

public static final String QUERY_BASE

String path matching a query request, by form or OpenSearch

See Also:

Constant Field Values

XQUERY_BASE

public static final String XQUERY_BASE

String path matching a query request, by form or OpenSearch, indicating user requests XML data in response

See Also:

Constant Field Values

REPLAY_BASE

public static final String REPLAY_BASE

String path matching a replay request, by form or OpenSearch

See Also:

Constant Field Values

DEFAULT_MAX_RECORDS

public static final int DEFAULT_MAX_RECORDS

Default maximum number of records to assume, overridden by configuration, when not specified in the client request

See Also:

Constant Field Values

Constructor Detail

BaseRequestParser

public BaseRequestParser()

Method Detail

parse

public abstract WaybackRequest parse(javax.servlet.http.HttpServletRequest httpRequest,
                   AccessPoint wbContext)
                              throws BadQueryException,
                                     BetterRequestException

Description copied from interface: RequestParser

attempt to transform an incoming HttpServletRequest into a WaybackRequest object. returns null if there is missing information.

Specified by:

parse in interface RequestParser

Parameters:

httpRequest - ServletHttpRequest being handled

wbContext - AccessPoint which is attempting to parse the request

Returns:

populated WaybackRequest object if successful, null otherwise.

Throws:

BadQueryException - if the request could match this AccessPoint, but is malformed: invalid datespec, URL, or flags

BetterRequestException - if the request should be redirected to provide better user feedback (corrected URL/date in address bar)

getMaxRecords

public int getMaxRecords()

Returns:

the maxRecords to use with this RequestParser, when not specified by the client request

setMaxRecords

public void setMaxRecords(int maxRecords)

Parameters:

maxRecords - the maxRecords to use with this RequestParser, when not specified by the client request

setEarliestTimestamp

public void setEarliestTimestamp(String timestamp)

Parameters:

timestamp - the earliest timestamp to use with this RequestParser when none is supplied by the user request

getEarliestTimestamp

public String getEarliestTimestamp()

Returns:

the default earliest timestamp to use with this RequestParser

getLatestTimestamp

public String getLatestTimestamp()

Returns:

default latest timestamp for this RequestParser

setLatestTimestamp

public void setLatestTimestamp(String timestamp)

Parameters:

timestamp - the default latest timestamp to use with this RequestParser