Class ISOLatin1AccentFilter
- java.lang.Object
-
- org.apache.lucene.util.AttributeSource
-
- org.apache.lucene.analysis.TokenStream
-
- org.apache.lucene.analysis.TokenFilter
-
- org.apache.lucene.analysis.ISOLatin1AccentFilter
-
- All Implemented Interfaces:
Closeable
,AutoCloseable
@Deprecated public final class ISOLatin1AccentFilter extends TokenFilter
Deprecated.If you build a new index, useASCIIFoldingFilter
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'.
-
-
Nested Class Summary
-
Nested classes/interfaces inherited from class org.apache.lucene.util.AttributeSource
AttributeSource.AttributeFactory, AttributeSource.State
-
-
Field Summary
-
Fields inherited from class org.apache.lucene.analysis.TokenFilter
input
-
-
Constructor Summary
Constructors Constructor Description ISOLatin1AccentFilter(TokenStream input)
Deprecated.
-
Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description boolean
incrementToken()
Deprecated.Consumers (i.e.,IndexWriter
) use this method to advance the stream to the next token.void
removeAccents(char[] input, int length)
Deprecated.To replace accented characters in a String by unaccented equivalents.-
Methods inherited from class org.apache.lucene.analysis.TokenFilter
close, end, reset
-
Methods inherited from class org.apache.lucene.util.AttributeSource
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState, toString
-
-
-
-
Constructor Detail
-
ISOLatin1AccentFilter
public ISOLatin1AccentFilter(TokenStream input)
Deprecated.
-
-
Method Detail
-
incrementToken
public final boolean incrementToken() throws IOException
Deprecated.Description copied from class:TokenStream
Consumers (i.e.,IndexWriter
) use this method to advance the stream to the next token. Implementing classes must implement this method and update the appropriateAttributeImpl
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
AttributeSource.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
AttributeSource.addAttribute(Class)
andAttributeSource.getAttribute(Class)
, references to allAttributeImpl
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
TokenStream.incrementToken()
.- Specified by:
incrementToken
in classTokenStream
- Returns:
- false for end of stream; true otherwise
- Throws:
IOException
-
removeAccents
public final void removeAccents(char[] input, int length)
Deprecated.To replace accented characters in a String by unaccented equivalents.
-
-