org.orekit.frames.configuration.eop
Class RapidDataAndPredictionXMLLoader

java.lang.Object
  org.orekit.frames.configuration.eop.RapidDataAndPredictionXMLLoader

All Implemented Interfaces:

DataLoader, EOP1980HistoryLoader, EOP2000HistoryLoader

public class RapidDataAndPredictionXMLLoader
extends Object
implements EOP1980HistoryLoader, EOP2000HistoryLoader

Loader for IERS rapid data and prediction file in XML format (finals file).

Rapid data and prediction file contain Earth Orientation Parameters for several years periods, in one file only that is updated regularly.

The XML EOP files are recognized thanks to their base names, which must match one of the the patterns finals.2000A.*.xml or finals.*.xml (or the same ending with .gz for gzip-compressed files) where * stands for a word like "all", "daily", or "data".

Files containing data (back to 1973) are available at IERS web site: Earth orientation data.

Author:

Luc Maisonobe

Constructor Summary

RapidDataAndPredictionXMLLoader(String supportedNames)
Build a loader for IERS XML EOP files.

Method Summary

void	fillHistory(EOP1980History history) Load celestial body.
void	fillHistory(EOP2000History history) Load celestial body.
void	loadData(InputStream input, String name) Load data from a stream.
boolean	stillAcceptsData() Check if the loader still accepts new data.

Methods inherited from class java.lang.Object

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

Constructor Detail

RapidDataAndPredictionXMLLoader

public RapidDataAndPredictionXMLLoader(String supportedNames)

Build a loader for IERS XML EOP files.

Parameters:

supportedNames - regular expression for supported files names

Method Detail

stillAcceptsData

public boolean stillAcceptsData()

Check if the loader still accepts new data.

This method is used to speed up data loading by interrupting crawling the data sets as soon as a loader has found the data it was waiting for. For loaders that can merge data from any number of sources (for example JPL ephemerides or Earth Orientation Parameters that are split among several files), this method should always return true to make sure no data is left over.

Specified by:

stillAcceptsData in interface DataLoader

Returns:

true while the loader still accepts new data

loadData

public void loadData(InputStream input,
                     String name)
              throws IOException,
                     OrekitException

Load data from a stream.

Specified by:

loadData in interface DataLoader

Parameters:

input - data input stream

name - name of the file (or zip entry)

Throws:

IOException - if data can't be read

OrekitException - if some data is missing or if some loader specific error occurs

fillHistory

public void fillHistory(EOP1980History history)
                 throws OrekitException

Load celestial body.

Specified by:

fillHistory in interface EOP1980HistoryLoader

Parameters:

history - history to fill up

Throws:

OrekitException - if the history cannot be loaded

fillHistory

public void fillHistory(EOP2000History history)
                 throws OrekitException

Load celestial body.

Specified by:

fillHistory in interface EOP2000HistoryLoader

Parameters:

history - history to fill up

Throws:

OrekitException - if the history cannot be loaded