Package com.ibm.icu.text

Class FilteredBreakIteratorBuilder

java.lang.Object

com.ibm.icu.text.FilteredBreakIteratorBuilder

public abstract class FilteredBreakIteratorBuilder
extends java.lang.Object

The BreakIteratorFilter is used to modify the behavior of a BreakIterator by constructing a new BreakIterator which suppresses certain segment boundaries. See http://www.unicode.org/reports/tr35/tr35-general.html#Segmentation_Exceptions . For example, a typical English Sentence Break Iterator would break on the space in the string "Mr. Smith" (resulting in two segments), but with "Mr." as an exception, a filtered break iterator would consider the string "Mr. Smith" to be a single segment.

This class is not intended for public subclassing.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	FilteredBreakIteratorBuilder()	Deprecated. internal to ICU

Method Summary

Modifier and Type	Method	Description
static FilteredBreakIteratorBuilder	getEmptyInstance()	Construct an empty FilteredBreakIteratorBuilder.
static FilteredBreakIteratorBuilder	getInstance(ULocale where)	Construct a FilteredBreakIteratorBuilder based on sentence break exception rules in a locale.
static FilteredBreakIteratorBuilder	getInstance(java.util.Locale where)	Construct a FilteredBreakIteratorBuilder based on sentence break exception rules in a locale.
abstract boolean	suppressBreakAfter(java.lang.CharSequence str)	Suppress a certain string from being the end of a segment.
abstract boolean	unsuppressBreakAfter(java.lang.CharSequence str)	Stop suppressing a certain string from being the end of the segment.
abstract BreakIterator	wrapIteratorWithFilter(BreakIterator wrappedBreakIterator)	Wrap (adopt) an existing break iterator in a new filtered instance.

Methods inherited from class java.lang.Object

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

Constructor Detail

FilteredBreakIteratorBuilder

@Deprecated
protected FilteredBreakIteratorBuilder()

Deprecated.

internal to ICU

For subclass use

Method Detail

getInstance

public static final FilteredBreakIteratorBuilder getInstance(java.util.Locale where)

Construct a FilteredBreakIteratorBuilder based on sentence break exception rules in a locale. The rules are taken from CLDR exception data for the locale, see http://www.unicode.org/reports/tr35/tr35-general.html#Segmentation_Exceptions This is the equivalent of calling createInstance(UErrorCode&) and then repeatedly calling addNoBreakAfter(...) with the contents of the CLDR exception data.

Parameters:

where - the locale.

Returns:

the new builder

getInstance

public static final FilteredBreakIteratorBuilder getInstance(ULocale where)

Construct a FilteredBreakIteratorBuilder based on sentence break exception rules in a locale. The rules are taken from CLDR exception data for the locale, see http://www.unicode.org/reports/tr35/tr35-general.html#Segmentation_Exceptions This is the equivalent of calling createInstance(UErrorCode&) and then repeatedly calling addNoBreakAfter(...) with the contents of the CLDR exception data.

Parameters:

where - the locale.

Returns:

the new builder

getEmptyInstance

public static final FilteredBreakIteratorBuilder getEmptyInstance()

Construct an empty FilteredBreakIteratorBuilder. In this state, it will not suppress any segment boundaries.

Returns:

the new builder

suppressBreakAfter

public abstract boolean suppressBreakAfter(java.lang.CharSequence str)

Suppress a certain string from being the end of a segment. For example, suppressing "Mr.", then segments ending in "Mr." will not be returned by the iterator.

Parameters:

str - the string to suppress, such as "Mr."

Returns:

true if the string was not present and now added, false if the call was a no-op because the string was already being suppressed.

unsuppressBreakAfter

public abstract boolean unsuppressBreakAfter(java.lang.CharSequence str)

Stop suppressing a certain string from being the end of the segment. This function does not create any new segment boundaries, but only serves to un-do the effect of earlier calls to suppressBreakAfter, or to un-do the effect of locale data which may be suppressing certain strings.

Parameters:

str - the str the string to unsuppress, such as "Mr."

Returns:

true if the string was present and now removed, false if the call was a no-op because the string was not being suppressed.

wrapIteratorWithFilter

public abstract BreakIterator wrapIteratorWithFilter(BreakIterator wrappedBreakIterator)

Wrap (adopt) an existing break iterator in a new filtered instance. Note that the wrappedBreakIterator is adopted by the new BreakIterator and should no longer be used by the caller. The FilteredBreakIteratorBuilder may be reused.

Parameters:

wrappedBreakIterator - the break iterator to wrap

Returns:

the new BreakIterator