stroom.search.server.TestStandardAnalyser.java Source code

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Here is the source code for stroom.search.server.TestStandardAnalyser.java

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/*
 * Copyright 2016 Crown Copyright
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package stroom.search.server;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.core.SimpleAnalyzer;
import org.apache.lucene.analysis.core.StopAnalyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;

public class TestStandardAnalyser {
    public static void main(final String[] args) throws Exception {
        new TestStandardAnalyser().test();
    }

    public void test() throws Exception {
        String in = "SOME-HYPHENATED-STRING";

        testAnalyser(in, new StandardAnalyzer());
        testAnalyser(in, new SimpleAnalyzer());
        testAnalyser(in, new StopAnalyzer());

        in = "user1";

        testAnalyser(in, new StandardAnalyzer());
        testAnalyser(in, new SimpleAnalyzer());
        testAnalyser(in, new StopAnalyzer());
    }

    private void testAnalyser(final String input, final Analyzer analyzer) throws Exception {
        System.out.println("Testing analyser: " + analyzer.getClass().getName());

        final ReusableStringReader reader = new ReusableStringReader();
        reader.init(input);

        final TokenStream stream = analyzer.tokenStream("Test", reader);

        // reset the TokenStream to the first token
        stream.reset();

        boolean hasMoreTokens = stream.incrementToken();

        final CharTermAttribute termAtt = stream.addAttribute(CharTermAttribute.class);

        for (;;) {
            if (!hasMoreTokens)
                break;

            // Get the text of this term.
            final char[] tokenText = termAtt.buffer();
            final int tokenTextLen = termAtt.length();

            System.out.println(new String(tokenText, 0, tokenTextLen));

            hasMoreTokens = stream.incrementToken();
        }
    }
}