ContextParser.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.tallison.lucene.syns.contextifiers;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class ContextParser {
    public static void main(String[] args) {
        ContextParser p = new ContextParser();
        Contextifier c = new PreContextifier();
        String[] strings = {"the_quick_brown_dog", "a_quick_brown_dog", "the_quick_brown", "the_quick_green", "the_quick_brown_fox"};
        List<String> converts = new ArrayList<String>();
        for (String it : strings) {
            converts.add(c.convert(it, 10));
        }
        Collections.sort(converts);
        Context context = new Context();
        for (String s : converts) {
            System.out.println(s + " : " + p.parse(s, context).toString());
        }
    }

    public Context parse(String s, Context c) {
        c.reset();
        int start = s.lastIndexOf(Contextifier.START_MARKER);
        int field = s.lastIndexOf(Contextifier.FIELD_MARKER);
        int cnt = s.lastIndexOf(Contextifier.COUNT_MARKER);
        if (start < 0 || field < 0 || cnt < 0) {
            return c;
        }
        try {
            c.setCount(Integer.parseInt(s.substring(cnt + 1)));
        } catch (NumberFormatException e) {
            return c;
        }
        c.setField(s.substring(start + 1, field));
        c.setContext(s.substring(field + 1, cnt));
        c.setKey(s.substring(0, start));

        return c;

    }

    public enum ATTRS {
        KEY,
        COUNT,
        FIELD,
        CONTEXT
    }
}