java.text
Class MergeCollation

java.lang.Object
  java.text.MergeCollation

final class MergeCollation

extends Object

Utility class for normalizing and merging patterns for collation. Patterns are strings of the form *, where has the form: := * := {"/"} := "=", ",", ";", "<", "&" , and are both arbitrary strings. unquoted whitespaces are ignored. 'xxx' can be used to quote characters One difference from Collator is that & is used to reset to a current point. Or, in other words, it introduces a new sequence which is to be added to the old. That is: "a < b < c < d" is the same as "a < b & b < c & c < d" OR "a < b < d & b < c" XXX: make '' be a single quote.

Author:

Mark Davis, Helena Shih

See Also:

PatternEntry

Field Summary

private byte	BITARRAYMASK
private int	BYTEMASK
private int	BYTEPOWER
private StringBuffer	excess
private PatternEntry	lastEntry
(package private) ArrayList	patterns
private PatternEntry	saveEntry
private byte[]	statusArray

Constructor Summary

MergeCollation(String pattern)
Creates from a pattern

Method Summary

void	addPattern(String pattern) adds a pattern to the current one.
String	emitPattern() emits the pattern for collation builder.
String	emitPattern(boolean withWhiteSpace) emits the pattern for collation builder.
private int	findLastEntry(PatternEntry entry, StringBuffer excessChars)
private PatternEntry	findLastWithNoExtension(int i)
private void	fixEntry(PatternEntry newEntry)
int	getCount() gets count of separate entries
PatternEntry	getItemAt(int index) gets count of separate entries
String	getPattern() recovers current pattern
String	getPattern(boolean withWhiteSpace) recovers current pattern.
void	setPattern(String pattern) sets the pattern.

Methods inherited from class java.lang.Object

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

Field Detail

patterns

ArrayList patterns

saveEntry

private transient PatternEntry saveEntry

lastEntry

private transient PatternEntry lastEntry

excess

private transient StringBuffer excess

statusArray

private transient byte[] statusArray

BITARRAYMASK

private final byte BITARRAYMASK

See Also:

Constant Field Values

BYTEPOWER

private final int BYTEPOWER

See Also:

Constant Field Values

BYTEMASK

private final int BYTEMASK

See Also:

Constant Field Values

Constructor Detail

MergeCollation

public MergeCollation(String pattern)
               throws ParseException

Creates from a pattern

Throws:

ParseException - If the input pattern is incorrect.

Method Detail

getPattern

public String getPattern()

recovers current pattern

getPattern

public String getPattern(boolean withWhiteSpace)

recovers current pattern.

Parameters:

withWhiteSpace - puts spacing around the entries, and \n before & and <

findLastWithNoExtension

private final PatternEntry findLastWithNoExtension(int i)

emitPattern

public String emitPattern()

emits the pattern for collation builder.

Returns:

emits the string in the format understable to the collation builder.

emitPattern

public String emitPattern(boolean withWhiteSpace)

emits the pattern for collation builder.

Parameters:

withWhiteSpace - puts spacing around the entries, and \n before & and <

Returns:

emits the string in the format understable to the collation builder.

setPattern

public void setPattern(String pattern)
                throws ParseException

sets the pattern.

Throws:

ParseException

addPattern

public void addPattern(String pattern)
                throws ParseException

adds a pattern to the current one.

Parameters:

pattern - the new pattern to be added

Throws:

ParseException

getCount

public int getCount()

gets count of separate entries

Returns:

the size of pattern entries

getItemAt

public PatternEntry getItemAt(int index)

gets count of separate entries

Parameters:

index - the offset of the desired pattern entry

Returns:

the requested pattern entry

fixEntry

private final void fixEntry(PatternEntry newEntry)
                     throws ParseException

Throws:

ParseException

findLastEntry

private final int findLastEntry(PatternEntry entry,
                                StringBuffer excessChars)
                         throws ParseException

Throws:

ParseException