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java.text

Class CollationElementIterator

public final class CollationElementIterator
extends Object
This class walks through the character collation elements of a String as defined by the collation rules in an instance of RuleBasedCollator. There is no public constructor for this class. An instance is created by calling the getCollationElementIterator method on RuleBasedCollator.

Field Summary

static int
NULLORDER
This is a constant value that is returned to indicate that the end of the string was encountered.

Method Summary

int
getMaxExpansion(int value)
This method returns the maximum length of any expansion sequence that ends with the specified collation order value.
int
getOffset()
This method returns the current offset into the String that is being iterated over.
int
next()
This method returns the collation ordering value of the next character sequence in the string (it may be an extended character following collation rules).
int
previous()
This method returns the collation ordering value of the previous character in the string.
static int
primaryOrder(int order)
This method returns the primary order value for the given collation value.
void
reset()
This method resets the internal position pointer to read from the beginning of the String again.
static short
secondaryOrder(int order)
This method returns the secondary order value for the given collation value.
void
setOffset(int offset)
This method sets the iteration index position into the current String to the specified value.
void
setText(String text)
This method sets the String that it is iterating over to the specified String.
void
setText(CharacterIterator source)
This method sets the String that it is iterating over to the String represented by the specified CharacterIterator.
static short
tertiaryOrder(int order)
This method returns the tertiary order value for the given collation value.

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

NULLORDER

public static final int NULLORDER
This is a constant value that is returned to indicate that the end of the string was encountered.
Field Value:
-1

Method Details

getMaxExpansion

public int getMaxExpansion(int value)
This method returns the maximum length of any expansion sequence that ends with the specified collation order value. (Whatever that means).
Parameters:
value - The collation order value
Returns:
The maximum length of an expansion sequence.

getOffset

public int getOffset()
This method returns the current offset into the String that is being iterated over.
Returns:
The iteration index position.
Since:
1.2

next

public int next()
This method returns the collation ordering value of the next character sequence in the string (it may be an extended character following collation rules). This method will return NULLORDER if the end of the string was reached.
Returns:
The collation ordering value.

previous

public int previous()
This method returns the collation ordering value of the previous character in the string. This method will return NULLORDER if the beginning of the string was reached.
Returns:
The collation ordering value.

primaryOrder

public static int primaryOrder(int order)
This method returns the primary order value for the given collation value.
Parameters:
order - The collation value returned from next() or previous().
Returns:
The primary order value of the specified collation value. This is the high 16 bits.

reset

public void reset()
This method resets the internal position pointer to read from the beginning of the String again.

secondaryOrder

public static short secondaryOrder(int order)
This method returns the secondary order value for the given collation value.
Parameters:
order - The collation value returned from next() or previous().
Returns:
The secondary order value of the specified collation value. This is the bits 8-15.

setOffset

public void setOffset(int offset)
This method sets the iteration index position into the current String to the specified value. This value must not be negative and must not be greater than the last index position in the String.
Parameters:
offset - The new iteration index position.
Throws:
IllegalArgumentException - If the new offset is not valid.

setText

public void setText(String text)
This method sets the String that it is iterating over to the specified String.
Parameters:
text - The new String to iterate over.
Since:
1.2

setText

public void setText(CharacterIterator source)
This method sets the String that it is iterating over to the String represented by the specified CharacterIterator.
Parameters:
source - The CharacterIterator containing the new String to iterate over.

tertiaryOrder

public static short tertiaryOrder(int order)
This method returns the tertiary order value for the given collation value.
Parameters:
order - The collation value returned from next() or previous().
Returns:
The tertiary order value of the specified collation value. This is the low eight bits.
CollationElementIterator.java -- Walks through collation elements Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004 Free Software Foundation This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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