Package org.orekit.files.ccsds.utils.generation

Class AbstractGenerator

java.lang.Object

org.orekit.files.ccsds.utils.generation.AbstractGenerator

All Implemented Interfaces:

AutoCloseable, Generator

Direct Known Subclasses:

KvnGenerator, XmlGenerator

public abstract class AbstractGenerator
extends Object
implements Generator

Base class for both Key-Value Notation and eXtended Markup Language generators for CCSDS messages.

Since:

11.0

Author:

Luc Maisonobe

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractGenerator(Appendable output, String outputName, double maxRelativeOffset, boolean writeUnits, Formatter formatter)	Simple constructor.

Method Summary

Modifier and Type	Method	Description
void	close()	Close the generator.
protected void	complain(String key, boolean mandatory)	Complain about a missing value.
String	dateToCalendarString(TimeConverter converter, AbsoluteDate date)	Convert a date to calendar string value with high precision.
String	dateToString(int year, int month, int day, int hour, int minute, double seconds)	Convert a date to string value with high precision.
String	dateToString(TimeConverter converter, AbsoluteDate date)	Convert a date to string value with high precision.
String	doubleToString(double value)	Convert a double to string value with high precision.
void	enterSection(String name)	Enter into a new section.
String	exitSection()	Exit last section.
Formatter	getFormatter()	Used to format dates and doubles to string.
String	getOutputName()	Get the name of the output (for error messages).
void	newLine()	Finish current line.
String	siToCcsdsName(String siName)	Convert a SI unit name to a CCSDS name.
String	unitsListToString(List<Unit> units)	Convert a list of units to a bracketed string.
void	writeEntry(String key, char value, boolean mandatory)	Write a single key/value entry.
void	writeEntry(String key, double value, Unit unit, boolean mandatory)	Write a single key/value entry.
void	writeEntry(String key, int value, boolean mandatory)	Write a single key/value entry.
void	writeEntry(String key, Double value, Unit unit, boolean mandatory)	Write a single key/value entry.
void	writeEntry(String key, Enum<?> value, boolean mandatory)	Write a single key/value entry.
void	writeEntry(String key, List<String> value, boolean mandatory)	Write a single key/value entry.
void	writeEntry(String key, TimeConverter converter, AbsoluteDate date, boolean forceCalendar, boolean mandatory)	Write a single key/value entry.
void	writeRawData(char data)	Write raw data.
void	writeRawData(CharSequence data)	Write raw data.
boolean	writeUnits(Unit unit)	Check if unit must be written.

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.generation.Generator

endMessage, getFormat, startMessage, writeComments, writeEntry, writeEntry

Constructor Details

AbstractGenerator

protected AbstractGenerator(Appendable output,
 String outputName,
 double maxRelativeOffset,
 boolean writeUnits,
 Formatter formatter)

Simple constructor.

Parameters:

output - destination of generated output

outputName - output name for error messages

maxRelativeOffset - maximum offset in seconds to use relative dates (if a date is too far from reference, it will be displayed as calendar elements)

writeUnits - if true, units must be written

formatter - how to format date and double to string.

Method Details

getOutputName

public String getOutputName()

Get the name of the output (for error messages).

Specified by:

getOutputName in interface Generator

Returns:

name of the output

getFormatter

public Formatter getFormatter()

Used to format dates and doubles to string.

Specified by:

getFormatter in interface Generator

Returns:

formatter

writeUnits

public boolean writeUnits(Unit unit)

Check if unit must be written.

Parameters:

unit - entry unit

Returns:

true if units must be written

close

public void close()
           throws IOException

Close the generator.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Generator

Throws:

IOException - if an I/O error occurs.

newLine

public void newLine()
             throws IOException

Finish current line.

Specified by:

newLine in interface Generator

Throws:

IOException - if an I/O error occurs.

writeEntry

public void writeEntry(String key,
 List<String> value,
 boolean mandatory)
                throws IOException

Write a single key/value entry.

Specified by:

writeEntry in interface Generator

Parameters:

key - the keyword to write

value - the value to write

mandatory - if true, null values triggers exception, otherwise they are silently ignored

Throws:

IOException - if an I/O error occurs.

writeEntry

public void writeEntry(String key,
 Enum<?> value,
 boolean mandatory)
                throws IOException

Write a single key/value entry.

Specified by:

writeEntry in interface Generator

Parameters:

key - the keyword to write

value - the value to write

mandatory - if true, null values triggers exception, otherwise they are silently ignored

Throws:

IOException - if an I/O error occurs.

writeEntry

public void writeEntry(String key,
 TimeConverter converter,
 AbsoluteDate date,
 boolean forceCalendar,
 boolean mandatory)
                throws IOException

Write a single key/value entry.

Specified by:

writeEntry in interface Generator

Parameters:

key - the keyword to write

converter - converter to use for dates

date - the date to write

forceCalendar - if true, the date is forced to calendar format

mandatory - if true, null values triggers exception, otherwise they are silently ignored

Throws:

IOException - if an I/O error occurs.

writeEntry

public void writeEntry(String key,
 double value,
 Unit unit,
 boolean mandatory)
                throws IOException

Write a single key/value entry.

Specified by:

writeEntry in interface Generator

Parameters:

key - the keyword to write

value - the value to write (in SI units)

unit - output unit

mandatory - if true, null values triggers exception, otherwise they are silently ignored

Throws:

IOException - if an I/O error occurs.

writeEntry

public void writeEntry(String key,
 Double value,
 Unit unit,
 boolean mandatory)
                throws IOException

Write a single key/value entry.

Specified by:

writeEntry in interface Generator

Parameters:

key - the keyword to write

value - the value to write (in SI units)

unit - output unit

mandatory - if true, null values triggers exception, otherwise they are silently ignored

Throws:

IOException - if an I/O error occurs.

writeEntry

public void writeEntry(String key,
 char value,
 boolean mandatory)
                throws IOException

Write a single key/value entry.

Specified by:

writeEntry in interface Generator

Parameters:

key - the keyword to write

value - the value to write

mandatory - if true, null values triggers exception, otherwise they are silently ignored

Throws:

IOException - if an I/O error occurs.

writeEntry

public void writeEntry(String key,
 int value,
 boolean mandatory)
                throws IOException

Write a single key/value entry.

Note that the mandatory flag has no effect and a value is always written because the whole domain of value is treated as valid. Use Generator.writeEntry(String, Integer, boolean) for integer values that may not be present.

Specified by:

writeEntry in interface Generator

Parameters:

key - the keyword to write

value - the value to write

mandatory - if true, null values triggers exception, otherwise they are silently ignored.

Throws:

IOException - if an I/O error occurs.

See Also:

• Generator.writeEntry(String, Integer, boolean)

writeRawData

public void writeRawData(char data)
                  throws IOException

Write raw data.

Specified by:

writeRawData in interface Generator

Parameters:

data - raw data to write

Throws:

IOException - if an I/O error occurs.

writeRawData

public void writeRawData(CharSequence data)
                  throws IOException

Write raw data.

Specified by:

writeRawData in interface Generator

Parameters:

data - raw data to write

Throws:

IOException - if an I/O error occurs.

enterSection

public void enterSection(String name)
                  throws IOException

Enter into a new section.

Specified by:

enterSection in interface Generator

Parameters:

name - section name

Throws:

IOException - if an I/O error occurs.

exitSection

public String exitSection()
                   throws IOException

Exit last section.

Specified by:

exitSection in interface Generator

Returns:

section name

Throws:

IOException - if an I/O error occurs.

complain

protected void complain(String key,
 boolean mandatory)

Complain about a missing value.

Parameters:

key - the keyword to write

mandatory - if true, triggers en exception, otherwise do nothing

doubleToString

public String doubleToString(double value)

Convert a double to string value with high precision.

We don't want to loose internal accuracy when writing doubles but we also don't want to have ugly representations like STEP = 1.25000000000000000 so we try a few simple formats first and fall back to scientific notation if it doesn't work.

Specified by:

doubleToString in interface Generator

Parameters:

value - value to format

Returns:

formatted value, with all original value accuracy preserved, or null if value is null or Double.NaN

dateToString

public String dateToString(TimeConverter converter,
 AbsoluteDate date)

Convert a date to string value with high precision.

Specified by:

dateToString in interface Generator

Parameters:

converter - converter for dates

date - date to write

Returns:

date as a string (may be either a relative date or a calendar date)

dateToCalendarString

public String dateToCalendarString(TimeConverter converter,
 AbsoluteDate date)

Convert a date to calendar string value with high precision.

Specified by:

dateToCalendarString in interface Generator

Parameters:

converter - converter for dates

date - date to write

Returns:

date as a calendar string

dateToString

public String dateToString(int year,
 int month,
 int day,
 int hour,
 int minute,
 double seconds)

Convert a date to string value with high precision.

Specified by:

dateToString in interface Generator

Parameters:

year - year

month - month

day - day

hour - hour

minute - minute

seconds - seconds

Returns:

date as a string

unitsListToString

public String unitsListToString(List<Unit> units)

Convert a list of units to a bracketed string.

Specified by:

unitsListToString in interface Generator

Parameters:

units - lists to output (may be null or empty)

Returns:

bracketed string (null if units list is null or empty)

siToCcsdsName

public String siToCcsdsName(String siName)

Convert a SI unit name to a CCSDS name.

Specified by:

siToCcsdsName in interface Generator

Parameters:

siName - si unit name

Returns:

CCSDS name for the unit