org.orekit.files.ccsds.utils.parsing

Class AbstractMessageParser<T>

java.lang.Object

org.orekit.files.ccsds.utils.parsing.AbstractMessageParser<T>

Type Parameters:

T - type of the file

All Implemented Interfaces:

MessageParser<T>

Direct Known Subclasses:

AbstractConstituentParser, NdmParser

public abstract class AbstractMessageParser<T>
extends Object
implements MessageParser<T>

Parser for CCSDS messages.

Note than starting with Orekit 11.0, CCSDS message parsers are mutable objects that gather the data being parsed, until the message is complete and the parseMessage method has returned. This implies that parsers should not be used in a multi-thread context. The recommended way to use parsers is to either dedicate one parser for each message and drop it afterwards, or to use a single-thread loop.

Since:

11.0

Author:

Luc Maisonobe

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractMessageParser(String root, String formatVersionKey) Simple constructor.

Method Summary

Modifier and Type	Method and Description
void	anticipateNext(ProcessingState anticipated) Anticipate what next processing state should be.
ProcessingState	getCurrent() Get the current processing state.
protected FileFormat	getFileFormat() Get the file format.
String	getFormatVersionKey() Get the key for format version.
Map<String,XmlTokenBuilder>	getSpecialXmlElementsBuilders() Get the non-default token builders for special XML elements.
T	parseMessage(DataSource source) Parse a data source.
void	process(ParseToken token) Process a parse token.
protected void	reset(FileFormat fileFormat, ProcessingState initialState) Reset parser to initial state before parsing.
void	setEndTagSeen(boolean endTagSeen) Set the flag for XML end tag.
void	setFallback(ProcessingState fallback) Set fallback processing state.
boolean	wasEndTagSeen() Check if XML end tag has been seen.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.files.ccsds.utils.lexical.MessageParser

build, reset

Constructor Detail

AbstractMessageParser

protected AbstractMessageParser(String root,
                                String formatVersionKey)

Simple constructor.

Parameters:

root - root element for XML files

formatVersionKey - key for format version

Method Detail

setFallback

public void setFallback(ProcessingState fallback)

Set fallback processing state.

The fallback processing state is used if anticipated state fails to parse the token.

Parameters:

fallback - processing state to use if anticipated state does not work

reset

protected void reset(FileFormat fileFormat,
                     ProcessingState initialState)

Reset parser to initial state before parsing.

Parameters:

fileFormat - format of the file ready to be parsed

initialState - initial processing state

setEndTagSeen

public void setEndTagSeen(boolean endTagSeen)

Set the flag for XML end tag.

Parameters:

endTagSeen - if true, the XML end tag has been seen

wasEndTagSeen

public boolean wasEndTagSeen()

Check if XML end tag has been seen.

Returns:

true if XML end tag has been seen

getCurrent

public ProcessingState getCurrent()

Get the current processing state.

Returns:

current processing state

getFileFormat

protected FileFormat getFileFormat()

Get the file format.

Returns:

file format

parseMessage

public T parseMessage(DataSource source)

Parse a data source.

Specified by:

parseMessage in interface MessageParser<T>

Parameters:

source - data source to parse

Returns:

parsed file

getFormatVersionKey

public String getFormatVersionKey()

Get the key for format version.

Specified by:

getFormatVersionKey in interface MessageParser<T>

Returns:

format version key

getSpecialXmlElementsBuilders

public Map<String,XmlTokenBuilder> getSpecialXmlElementsBuilders()

Get the non-default token builders for special XML elements.

Specified by:

getSpecialXmlElementsBuilders in interface MessageParser<T>

Returns:

map of token builders for special XML elements (keyed by XML element name)

anticipateNext

public void anticipateNext(ProcessingState anticipated)

Anticipate what next processing state should be.

Parameters:

anticipated - anticipated next processing state

process

public void process(ParseToken token)

Process a parse token.

Specified by:

process in interface MessageParser<T>

Parameters:

token - token to process