thredds.dqc.server.jplQuikSCAT

Class JplQuikSCAT

java.lang.Object

thredds.dqc.server.DqcHandler

thredds.dqc.server.jplQuikSCAT.JplQuikSCAT

public class JplQuikSCAT
extends DqcHandler

A description User: edavis Date: Jan 2, 2004 Time: 3:24:38 PM

Field Summary

Fields

Modifier and Type	Field and Description
protected SelectFromRange	allowedDateRange
protected SelectFromRange	allowedLongitudeRange
protected Comparator	comparator
protected String	dqcServletUrl
protected String	epochStartDateTimeString
protected JplQuikScatDodsFileServer	jplQsDfs Information about the JPL QuikSCAT DFS catalog.
protected JplQuikScatCalendar	jplQuikScatCalendar
protected List	resultSortedList

Constructor Summary

Constructors

Constructor and Description
JplQuikSCAT()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	addToResultsList(JplQuikScatEntry entry, Comparator comparator) Add the given entry to the results list.
protected InvCatalog	buildCatalogFromRequest(String requestedDateRangeStart, String requestedDateRangeEnd, String requestedLongitudeRangeStart, String requestedLongitudeRangeEnd) Given the request parameters as strings, return an InvCatalog.
protected InvCatalog	createCatalog(List entries)
protected QueryCapability	createDqcDocument(String baseURI)
void	handleRequest(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res) This abstract method is used by the DqcServlet to generate an HttpServletResponse from the given HttpServletRequest.
void	initWithHandlerConfigDoc(URL configDocURL) JplQuikSCAT implementation of the DqcHandler initialization method.
protected boolean	validateRequest(JplQuikScatUserQuery request) Return true if given request is valid (i.e., the request values are within the allowed ranges), otherwise, return false.

Methods inherited from class thredds.dqc.server.DqcHandler

factory, getHandlerInfo, setHandlerInfo

Methods inherited from class java.lang.Object

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

Field Detail

dqcServletUrl

protected String dqcServletUrl

jplQsDfs

protected JplQuikScatDodsFileServer jplQsDfs

Information about the JPL QuikSCAT DFS catalog.

allowedDateRange

protected SelectFromRange allowedDateRange

allowedLongitudeRange

protected SelectFromRange allowedLongitudeRange

resultSortedList

protected List resultSortedList

comparator

protected Comparator comparator

epochStartDateTimeString

protected String epochStartDateTimeString

jplQuikScatCalendar

protected JplQuikScatCalendar jplQuikScatCalendar

Constructor Detail

JplQuikSCAT

public JplQuikSCAT()

Method Detail

initWithHandlerConfigDoc

public void initWithHandlerConfigDoc(URL configDocURL)
                              throws IOException

JplQuikSCAT implementation of the DqcHandler initialization method. Remember, this method is called by the DqcHandler factory method.

Specified by:

initWithHandlerConfigDoc in class DqcHandler

Parameters:

configDocURL - - a URL to the config doc for this DqcHandler, not used (null) for this handler.

Throws:

IOException - if trouble reading config document.

IllegalArgumentException - if config document does not contain the needed information.

handleRequest

public void handleRequest(javax.servlet.http.HttpServletRequest req,
                 javax.servlet.http.HttpServletResponse res)
                   throws IOException,
                          javax.servlet.ServletException

Description copied from class: DqcHandler

This abstract method is used by the DqcServlet to generate an HttpServletResponse from the given HttpServletRequest.

Specified by:

handleRequest in class DqcHandler

Parameters:

req -

res -

Throws:

IOException - if an input or output error is detected while the servlet handles the GET request.

javax.servlet.ServletException - if the request can't be handled for some reason.

createDqcDocument

protected QueryCapability createDqcDocument(String baseURI)

buildCatalogFromRequest

protected InvCatalog buildCatalogFromRequest(String requestedDateRangeStart,
                                 String requestedDateRangeEnd,
                                 String requestedLongitudeRangeStart,
                                 String requestedLongitudeRangeEnd)
                                      throws IOException

Given the request parameters as strings, return an InvCatalog.

Parameters:

requestedDateRangeStart - - the minimum point of the requested Date range (a string of a float in seconds since 1999-01-01).

requestedDateRangeEnd - - the minimum point of the requested Date range (a string of a float in seconds since 1999-01-01).

requestedLongitudeRangeStart - - the minimum point of the requested Longitude range (a string of a float in degrees east).

requestedLongitudeRangeEnd - - the maximum point of the requested Longitude range (a string of a float in degrees east).

Returns:

an InvCatalog containing the datasets from the requested date range and longitude range.

Throws:

IOException - if reading information from backing store fails.

IllegalArgumentException - if the request parameters are invalid.

validateRequest

protected boolean validateRequest(JplQuikScatUserQuery request)

Return true if given request is valid (i.e., the request values are within the allowed ranges), otherwise, return false.

Parameters:

request - - The user request.

Returns:

Return true if the given request is valid, otherwise, return false.

Throws:

NullPointerException - if the given request is a null pointer.

addToResultsList

protected void addToResultsList(JplQuikScatEntry entry,
                    Comparator comparator)

Add the given entry to the results list.

createCatalog

protected InvCatalog createCatalog(List entries)