java.lang.Object | ||||
↳ | org.apache.lucene.util.AttributeSource | |||
↳ | org.apache.lucene.analysis.TokenStream | |||
↳ | org.apache.lucene.analysis.TokenFilter | |||
↳ | org.apache.lucene.analysis.ISOLatin1AccentFilter |
This class is deprecated.
If you build a new index, use ASCIIFoldingFilter
which covers a superset of Latin 1.
This class is included for use with existing
indexes and will be removed in a future release (possibly Lucene 4.0).
A filter that replaces accented characters in the ISO Latin 1 character set (ISO-8859-1) by their unaccented equivalent. The case will not be altered.
For instance, 'à' will be replaced by 'a'.
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Inherited Fields | |||||||||||
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From class
org.apache.lucene.analysis.TokenFilter
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Public Constructors | |||||||||||
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Public Methods | |||||||||||
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Consumers (i.e.,
IndexWriter ) use this method to advance the stream to
the next token. | |||||||||||
To replace accented characters in a String by unaccented equivalents.
|
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Inherited Methods | |||||||||||
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From class
org.apache.lucene.analysis.TokenFilter
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From class
org.apache.lucene.analysis.TokenStream
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From class
org.apache.lucene.util.AttributeSource
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From class
java.lang.Object
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From interface
java.io.Closeable
|
Consumers (i.e., IndexWriter
) use this method to advance the stream to
the next token. Implementing classes must implement this method and update
the appropriate AttributeImpl
s with the attributes of the next
token.
The producer must make no assumptions about the attributes after the method
has been returned: the caller may arbitrarily change it. If the producer
needs to preserve the state for subsequent calls, it can use
captureState()
to create a copy of the current attribute state.
This method is called for every token of a document, so an efficient
implementation is crucial for good performance. To avoid calls to
addAttribute(Class)
and getAttribute(Class)
,
references to all AttributeImpl
s that this stream uses should be
retrieved during instantiation.
To ensure that filters and consumers know which attributes are available,
the attributes must be added during instantiation. Filters and consumers
are not required to check for availability of attributes in
incrementToken()
.
IOException |
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To replace accented characters in a String by unaccented equivalents.