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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.search.suggest.phrase;
import org.apache.lucene.util.BytesRef;
import org.elasticsearch.search.suggest.phrase.DirectCandidateGenerator.Candidate;
import org.elasticsearch.search.suggest.phrase.DirectCandidateGenerator.CandidateSet;
import java.io.IOException;
//TODO public for tests
public abstract class CandidateGenerator {
public abstract boolean isKnownWord(BytesRef term) throws IOException;
public abstract long frequency(BytesRef term) throws IOException;
public CandidateSet drawCandidates(BytesRef term) throws IOException {
CandidateSet set = new CandidateSet(Candidate.EMPTY, createCandidate(term, true));
return drawCandidates(set);
}
public Candidate createCandidate(BytesRef term, boolean userInput) throws IOException {
return createCandidate(term, frequency(term), 1.0, userInput);
}
public Candidate createCandidate(BytesRef term, long frequency, double channelScore) throws IOException {
return createCandidate(term, frequency, channelScore, false);
}
public abstract Candidate createCandidate(BytesRef term, long frequency, double channelScore, boolean userInput) throws IOException;
public abstract CandidateSet drawCandidates(CandidateSet set) throws IOException;
}
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