public final class GermanStemFilter extends TokenFilter
TokenFilterthat stems German words.
It supports a table of words that should
not be stemmed at all. The stemmer used can be changed at runtime after the
filter object is created (as long as it is a
|Constructor and Description|
|Modifier and Type||Method and Description|
Set a alternative/custom
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState, toString
public GermanStemFilter(TokenStream in)
in- the source
public boolean incrementToken() throws IOException
IndexWriter) use this method to advance the stream to the next token. Implementing classes must implement this method and update the appropriate
AttributeImpls 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
references to all
AttributeImpls 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
public void setStemmer(GermanStemmer stemmer)
GermanStemmerfor this filter.