Package org.orekit.files.ccsds.ndm.adm.aem

Class StreamingAemWriter

java.lang.Object

org.orekit.files.ccsds.ndm.adm.aem.StreamingAemWriter

All Implemented Interfaces:

AutoCloseable

public class StreamingAemWriter
extends Object
implements AutoCloseable

A writer for AEM files.

Each instance corresponds to a single AEM file.

This class can be used as a step handler for a Propagator.

 Propagator propagator = ...; // pre-configured propagator
 AEMWriter  aemWriter  = ...; // pre-configured writer
   try (Generator out = ...;  // set-up output stream
        StreamingAemWriter sw = new StreamingAemWriter(out, aemWriter)) { // set-up streaming writer

     // write segment 1
     propagator.getMultiplexer().add(step, sw.newSegment());
     propagator.propagate(startDate1, stopDate1);

     ...

     // write segment n
     propagator.getMultiplexer().clear();
     propagator.getMultiplexer().add(step, sw.newSegment());
     propagator.propagate(startDateN, stopDateN);

   }
 

Since:

10.2

Author:

Bryan Cazabonne, Luc Maisonobe

See Also:

• CCSDS 504.0-B-1 Attitude Data Messages
• AemWriter

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	StreamingAemWriter.SegmentWriter	A writer for a segment of an AEM.

Constructor Summary

Constructors

Constructor	Description
StreamingAemWriter(Generator generator, AemWriter writer, AdmHeader header, AemMetadata template)	Simple constructor.

Method Summary

Modifier and Type	Method	Description
void	close()
StreamingAemWriter.SegmentWriter	newSegment()	Create a writer for a new AEM attitude ephemeris segment.

Methods inherited from class java.lang.Object

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

Constructor Details

StreamingAemWriter

public StreamingAemWriter(Generator generator,
 AemWriter writer,
 AdmHeader header,
 AemMetadata template)

Simple constructor.

Parameters:

generator - generator for AEM output

writer - writer for the AEM message format

header - file header (may be null)

template - template for metadata

Since:

11.0

Method Details

newSegment

public StreamingAemWriter.SegmentWriter newSegment()

Create a writer for a new AEM attitude ephemeris segment.

The returned writer can only write a single attitude ephemeris segment in an AEM. This method must be called to create a writer for each attitude ephemeris segment.

Returns:

a new AEM segment writer, ready for use.

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Throws:

IOException