/*
* 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.uima.normalizer;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import opennlp.tools.dictionary.serializer.Attributes;
import opennlp.tools.dictionary.serializer.DictionarySerializer;
import opennlp.tools.dictionary.serializer.Entry;
import opennlp.tools.dictionary.serializer.EntryInserter;
import opennlp.tools.util.InvalidFormatException;
import opennlp.tools.util.StringList;
// lookup a string for given token list
public class StringDictionary {
private Map<StringList, String> entries = new HashMap<StringList, String>();
public StringDictionary() {
}
/**
* Initializes the current instance.
*
* @param in
* @throws IOException
* @throws InvalidFormatException
*/
public StringDictionary(InputStream in) throws IOException,
InvalidFormatException {
DictionarySerializer.create(in, new EntryInserter() {
public void insert(Entry entry) throws InvalidFormatException {
String valueString = entry.getAttributes().getValue("value");
put(entry.getTokens(), valueString);
}
});
}
public String get(StringList key) {
return (String) entries.get(key);
}
public void put(StringList key, String value) {
entries.put(key, value);
}
Iterator<StringList> iterator() {
return entries.keySet().iterator();
}
/**
* Writes the ngram instance to the given {@link OutputStream}.
*
* @param out
* @throws IOException
* if an I/O Error during writing occures
*/
public void serialize(OutputStream out) throws IOException {
Iterator<Entry> entryIterator = new Iterator<Entry>() {
private Iterator<StringList> mDictionaryIterator = StringDictionary.this.iterator();
public boolean hasNext() {
return mDictionaryIterator.hasNext();
}
public Entry next() {
StringList tokens = mDictionaryIterator.next();
Attributes attributes = new Attributes();
attributes.setValue("value", get(tokens));
return new Entry(tokens, attributes);
}
public void remove() {
throw new UnsupportedOperationException();
}
};
DictionarySerializer.serialize(out, entryIterator, true);
}
}