org.apache.lucene.analysis.util
public class CharArraySet extends AbstractSet<Object>
You must specify the required Version
compatibility when creating CharArraySet
:
CharArraySet
with the behavior before Lucene
3.1 pass a Version
< 3.1 to the constructors.
Please note: This class implements Set
but
does not behave like it should in all cases. The generic type is
Set<Object>
, because you can add any object to it,
that has a string representation. The add methods will use
Object.toString()
and store the result using a char[]
buffer. The same behavior have the contains()
methods.
The iterator()
returns an Iterator<char[]>
.
Modifier and Type | Field and Description |
---|---|
static CharArraySet |
EMPTY_SET |
Constructor and Description |
---|
CharArraySet(Version matchVersion,
Collection<?> c,
boolean ignoreCase)
Creates a set from a Collection of objects.
|
CharArraySet(Version matchVersion,
int startSize,
boolean ignoreCase)
Create set with enough capacity to hold startSize terms
|
Modifier and Type | Method and Description |
---|---|
boolean |
add(char[] text)
Add this char[] directly to the set.
|
boolean |
add(CharSequence text)
Add this CharSequence into the set
|
boolean |
add(Object o) |
boolean |
add(String text)
Add this String into the set
|
void |
clear()
Clears all entries in this set.
|
boolean |
contains(char[] text,
int off,
int len)
true if the
len chars of text starting at off
are in the set |
boolean |
contains(CharSequence cs)
true if the
CharSequence is in the set |
boolean |
contains(Object o) |
static CharArraySet |
copy(Version matchVersion,
Set<?> set)
Returns a copy of the given set as a
CharArraySet . |
Iterator<Object> |
iterator()
Returns an
Iterator for char[] instances in this set. |
int |
size() |
String |
toString() |
static CharArraySet |
unmodifiableSet(CharArraySet set)
Returns an unmodifiable
CharArraySet . |
equals, hashCode, removeAll
addAll, containsAll, isEmpty, remove, retainAll, toArray, toArray
public static final CharArraySet EMPTY_SET
public CharArraySet(Version matchVersion, int startSize, boolean ignoreCase)
matchVersion
- compatibility match version see Version
note above for details.startSize
- the initial capacityignoreCase
- false
if and only if the set should be case sensitive
otherwise true
.public CharArraySet(Version matchVersion, Collection<?> c, boolean ignoreCase)
matchVersion
- compatibility match version see Version
note above for details.c
- a collection whose elements to be placed into the setignoreCase
- false
if and only if the set should be case sensitive
otherwise true
.public void clear()
Set.remove(java.lang.Object)
.clear
in interface Collection<Object>
clear
in interface Set<Object>
clear
in class AbstractCollection<Object>
public boolean contains(char[] text, int off, int len)
len
chars of text
starting at off
are in the setpublic boolean contains(CharSequence cs)
CharSequence
is in the setpublic boolean contains(Object o)
contains
in interface Collection<Object>
contains
in interface Set<Object>
contains
in class AbstractCollection<Object>
public boolean add(Object o)
add
in interface Collection<Object>
add
in interface Set<Object>
add
in class AbstractCollection<Object>
public boolean add(CharSequence text)
public boolean add(String text)
public boolean add(char[] text)
public int size()
size
in interface Collection<Object>
size
in interface Set<Object>
size
in class AbstractCollection<Object>
public static CharArraySet unmodifiableSet(CharArraySet set)
CharArraySet
. This allows to provide
unmodifiable views of internal sets for "read-only" use.set
- a set for which the unmodifiable set is returned.CharArraySet
.NullPointerException
- if the given set is null
.public static CharArraySet copy(Version matchVersion, Set<?> set)
CharArraySet
. If the given set
is a CharArraySet
the ignoreCase property will be preserved.
Note: If you intend to create a copy of another CharArraySet
where
the Version
of the source set differs from its copy
CharArraySet(Version, Collection, boolean)
should be used instead.
The copy(Version, Set)
will preserve the Version
of the
source set it is an instance of CharArraySet
.
matchVersion
- compatibility match version see Version
note above for details. This argument will be ignored if the
given set is a CharArraySet
.set
- a set to copyCharArraySet
. If the given set
is a CharArraySet
the ignoreCase property as well as the
matchVersion will be of the given set will be preserved.public String toString()
toString
in class AbstractCollection<Object>
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