opennlp.tools.tokenize.TokenizerStream Maven / Gradle / Ivy
/*
* 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 opennlp.tools.tokenize;
import java.io.IOException;
import opennlp.tools.util.ObjectStream;
import opennlp.tools.util.Span;
/**
* The {@link TokenizerStream} uses a {@link Tokenizer} to tokenize the
* input string and output {@link TokenSample samples}.
*/
public class TokenizerStream implements ObjectStream {
private final Tokenizer tokenizer;
private final ObjectStream input;
/**
* Initializes a {@link TokenizerStream instance}.
*
* @param tokenizer A working {@link Tokenizer} instance.
* @param input A plain text {@link ObjectStream line stream}.
*/
public TokenizerStream(Tokenizer tokenizer, ObjectStream input) {
this.tokenizer = tokenizer;
this.input = input;
}
@Override
public TokenSample read() throws IOException {
String inputString = input.read();
if (inputString != null) {
Span[] tokens = tokenizer.tokenizePos(inputString);
return new TokenSample(inputString, tokens);
}
return null;
}
@Override
public void close() throws IOException {
input.close();
}
@Override
public void reset() throws IOException,
UnsupportedOperationException {
input.reset();
}
}