org.apache.commons.math3.geometry
Class VectorFormat<S extends Space>

java.lang.Object
  org.apache.commons.math3.geometry.VectorFormat<S>

Type Parameters:

S - Type of the space.

Direct Known Subclasses:

Vector1DFormat, Vector2DFormat, Vector3DFormat

public abstract class VectorFormat<S extends Space>
extends Object

Formats a vector in components list format "{x; y; ...}".

The prefix and suffix "{" and "}" and the separator "; " can be replaced by any user-defined strings. The number format for components can be configured.

White space is ignored at parse time, even if it is in the prefix, suffix or separator specifications. So even if the default separator does include a space character that is used at format time, both input string "{1;1;1}" and " { 1 ; 1 ; 1 } " will be parsed without error and the same vector will be returned. In the second case, however, the parse position after parsing will be just after the closing curly brace, i.e. just before the trailing space.

Since:

3.0

Version:

$Id: VectorFormat.java 3720 2012-03-16 16:34:17Z CardosoP $

Field Summary

static String	DEFAULT_PREFIX The default prefix: "{".
static String	DEFAULT_SEPARATOR The default separator: ", ".
static String	DEFAULT_SUFFIX The default suffix: "}".

Constructor Summary

protected	VectorFormat() Create an instance with default settings.
protected	VectorFormat(NumberFormat format) Create an instance with a custom number format for components.
protected	VectorFormat(String prefix, String suffix, String separator) Create an instance with custom prefix, suffix and separator.
protected	VectorFormat(String prefix, String suffix, String separator, NumberFormat format) Create an instance with custom prefix, suffix, separator and format for components.

Method Summary

protected StringBuffer	format(StringBuffer toAppendTo, FieldPosition pos, double... coordinates) Formats the coordinates of a Vector to produce a string.
String	format(Vector<S> vector) Formats a Vector object to produce a string.
abstract StringBuffer	format(Vector<S> vector, StringBuffer toAppendTo, FieldPosition pos) Formats a Vector object to produce a string.
static Locale[]	getAvailableLocales() Get the set of locales for which point/vector formats are available.
NumberFormat	getFormat() Get the components format.
String	getPrefix() Get the format prefix.
String	getSeparator() Get the format separator between components.
String	getSuffix() Get the format suffix.
abstract Vector<S>	parse(String source) Parses a string to produce a Vector object.
abstract Vector<S>	parse(String source, ParsePosition pos) Parses a string to produce a Vector object.
protected double[]	parseCoordinates(int dimension, String source, ParsePosition pos) Parses a string to produce an array of coordinates.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_PREFIX

public static final String DEFAULT_PREFIX

The default prefix: "{".

See Also:

Constant Field Values

DEFAULT_SUFFIX

public static final String DEFAULT_SUFFIX

The default suffix: "}".

See Also:

Constant Field Values

DEFAULT_SEPARATOR

public static final String DEFAULT_SEPARATOR

The default separator: ", ".

See Also:

Constant Field Values

Constructor Detail

VectorFormat

protected VectorFormat()

Create an instance with default settings.

The instance uses the default prefix, suffix and separator: "{", "}", and "; " and the default number format for components.

VectorFormat

protected VectorFormat(NumberFormat format)

Create an instance with a custom number format for components.

Parameters:

format - the custom format for components.

VectorFormat

protected VectorFormat(String prefix,
                       String suffix,
                       String separator)

Create an instance with custom prefix, suffix and separator.

Parameters:

prefix - prefix to use instead of the default "{"

suffix - suffix to use instead of the default "}"

separator - separator to use instead of the default "; "

VectorFormat

protected VectorFormat(String prefix,
                       String suffix,
                       String separator,
                       NumberFormat format)

Create an instance with custom prefix, suffix, separator and format for components.

Parameters:

prefix - prefix to use instead of the default "{"

suffix - suffix to use instead of the default "}"

separator - separator to use instead of the default "; "

format - the custom format for components.

Method Detail

getAvailableLocales

public static Locale[] getAvailableLocales()

Get the set of locales for which point/vector formats are available.

This is the same set as the NumberFormat set.

Returns:

available point/vector format locales.

getPrefix

public String getPrefix()

Get the format prefix.

Returns:

format prefix.

getSuffix

public String getSuffix()

Get the format suffix.

Returns:

format suffix.

getSeparator

public String getSeparator()

Get the format separator between components.

Returns:

format separator.

getFormat

public NumberFormat getFormat()

Get the components format.

Returns:

components format.

format

public String format(Vector<S> vector)

Formats a Vector object to produce a string.

Parameters:

vector - the object to format.

Returns:

a formatted string.

format

public abstract StringBuffer format(Vector<S> vector,
                                    StringBuffer toAppendTo,
                                    FieldPosition pos)

Formats a Vector object to produce a string.

Parameters:

vector - the object to format.

toAppendTo - where the text is to be appended

pos - On input: an alignment field, if desired. On output: the offsets of the alignment field

Returns:

the value passed in as toAppendTo.

format

protected StringBuffer format(StringBuffer toAppendTo,
                              FieldPosition pos,
                              double... coordinates)

Formats the coordinates of a Vector to produce a string.

Parameters:

toAppendTo - where the text is to be appended

pos - On input: an alignment field, if desired. On output: the offsets of the alignment field

coordinates - coordinates of the object to format.

Returns:

the value passed in as toAppendTo.

parse

public abstract Vector<S> parse(String source)
                                       throws MathParseException

Parses a string to produce a Vector object.

Parameters:

source - the string to parse

Returns:

the parsed Vector object.

Throws:

MathParseException - if the beginning of the specified string cannot be parsed.

parse

public abstract Vector<S> parse(String source,
                                ParsePosition pos)

Parses a string to produce a Vector object.

Parameters:

source - the string to parse

pos - input/output parsing parameter.

Returns:

the parsed Vector object.

parseCoordinates

protected double[] parseCoordinates(int dimension,
                                    String source,
                                    ParsePosition pos)

Parses a string to produce an array of coordinates.

Parameters:

dimension - dimension of the space

source - the string to parse

pos - input/output parsing parameter.

Returns:

coordinates array.