adding support of lucene 3.5 and start working english stemmer

git-svn-id: https://russianmorphology.googlecode.com/svn/trunk@123 d817d54c-26ab-11de-abc9-2f7d1455ff7a

english/src/main/java/org/apache/lucene/morphology/english/stemmer/EnglishStemmer.java

@@ -0,0 +1,23 @@
+package org.apache.lucene.morphology.english.stemmer;
+
+
+import org.apache.lucene.morphology.english.EnglishLuceneMorphology;
+
+import java.util.List;
+
+public class EnglishStemmer {
+    private EnglishLuceneMorphology englishLuceneMorphology;
+
+    public String getStemmedWord(String word){
+        List<String> normalForms = englishLuceneMorphology.getNormalForms(word);
+        if(normalForms.size() == 1){
+            return normalForms.get(0);
+        }
+        normalForms.remove(word);
+        if(normalForms.size() == 1){
+            return normalForms.get(0);
+        }
+        return word;
+    }
+
+}

english/src/main/java/org/apache/lucene/morphology/english/stemmer/EnglishStemmerFilter.java

@@ -0,0 +1,34 @@
+package org.apache.lucene.morphology.english.stemmer;
+
+
+import org.apache.lucene.analysis.TokenFilter;
+import org.apache.lucene.analysis.TokenStream;
+import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
+import org.apache.lucene.morphology.LuceneMorphology;
+
+import java.io.IOException;
+import java.util.Iterator;
+
+public class EnglishStemmerFilter extends TokenFilter {
+    private EnglishStemmer englishStemmer;
+    private final CharTermAttribute termAtt = addAttribute(CharTermAttribute.class);
+
+    public EnglishStemmerFilter(TokenStream input, EnglishStemmer englishStemmer) {
+        super(input);
+        this.englishStemmer = englishStemmer;
+    }
+
+
+    final public boolean incrementToken() throws IOException {
+
+        boolean b = input.incrementToken();
+        if (!b) {
+            return false;
+        }
+        String s = new String(termAtt.buffer(), 0, termAtt.length());
+        termAtt.setEmpty();
+        termAtt.append(s);
+        return true;
+    }
+
+}