org.apache.uima.lucas.indexer.test.util.CollectionTokenStream.java Source code

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Here is the source code for org.apache.uima.lucas.indexer.test.util.CollectionTokenStream.java

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/*
 * 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.apache.uima.lucas.indexer.test.util;

import java.io.IOException;
import java.util.Collection;
import java.util.Iterator;

import org.apache.lucene.analysis.Token;
import org.apache.lucene.analysis.TokenStream;

public class CollectionTokenStream extends TokenStream {

    private Iterator<Token> tokenIterator;
    private Collection<Token> tokens;

    public CollectionTokenStream(Collection<Token> tokens) {
        super();
        this.tokenIterator = tokens.iterator();
        this.tokens = tokens;
    }

    @Override
    public Token next(Token nextToken) throws IOException {
        if (tokenIterator.hasNext()) {
            Token nextCollectionToken = tokenIterator.next();
            nextToken.reinit(nextCollectionToken);
            return nextToken;
        } else
            return null;
    }

    @Override
    public void reset() throws IOException {
        super.reset();
        this.tokenIterator = tokens.iterator();
    }
}