org.apache.lucene.analysis.el: public final class: GreekLowerCaseFilter

org.apache.lucene.analysis.el
public final class: GreekLowerCaseFilter [javadoc | source]

java.lang.Object
   org.apache.lucene.util.AttributeSource
      org.apache.lucene.analysis.TokenStream
         org.apache.lucene.analysis.TokenFilter
            org.apache.lucene.analysis.el.GreekLowerCaseFilter

All Implemented Interfaces:
Closeable

Normalizes token text to lower case, removes some Greek diacritics, and standardizes final sigma to sigma.

Fields inherited from org.apache.lucene.analysis.TokenFilter:
input

Constructor:
public GreekLowerCaseFilter(TokenStream in) { super(in); termAtt = addAttribute(TermAttribute.class); }

Method from org.apache.lucene.analysis.el.GreekLowerCaseFilter Summary:
incrementToken

Methods from org.apache.lucene.analysis.TokenFilter:
close, end, reset

Methods from org.apache.lucene.analysis.TokenStream:
close, end, incrementToken, reset

Methods from org.apache.lucene.util.AttributeSource:
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, restoreState, toString

Methods from java.lang.Object:
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.apache.lucene.analysis.el.GreekLowerCaseFilter Detail:
public boolean incrementToken() throws IOException { if (input.incrementToken()) { char[] chArray = termAtt.termBuffer(); int chLen = termAtt.termLength(); // TODO: iterate codepoints to support supp. characters for (int i = 0; i < chLen; i++) { chArray[i] = (char) lowerCase(chArray[i]); } return true; } else { return false; } }

Method from org.apache.lucene.analysis.el.GreekLowerCaseFilter Detail:

 public boolean incrementToken() throws IOException {
      if (input.incrementToken()) {
        char[] chArray = termAtt.termBuffer();
        int chLen = termAtt.termLength();
        // TODO: iterate codepoints to support supp. characters
        for (int i = 0; i <  chLen; i++)
        {
          chArray[i] = (char) lowerCase(chArray[i]);
        }
        return true;
      } else {
        return false;
      }
}