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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.term;
import org.elasticsearch.common.HasContextAndHeaders;
import org.elasticsearch.common.ParseFieldMatcher;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.index.mapper.MapperService;
import org.elasticsearch.index.query.IndexQueryParserService;
import org.elasticsearch.search.suggest.DirectSpellcheckerSettings;
import org.elasticsearch.search.suggest.SuggestContextParser;
import org.elasticsearch.search.suggest.SuggestUtils;
import org.elasticsearch.search.suggest.SuggestionSearchContext;
import java.io.IOException;
public final class TermSuggestParser implements SuggestContextParser {
private TermSuggester suggester;
public TermSuggestParser(TermSuggester suggester) {
this.suggester = suggester;
}
@Override
public SuggestionSearchContext.SuggestionContext parse(XContentParser parser, MapperService mapperService,
IndexQueryParserService queryParserService, HasContextAndHeaders headersContext) throws IOException {
XContentParser.Token token;
String fieldName = null;
TermSuggestionContext suggestion = new TermSuggestionContext(suggester);
DirectSpellcheckerSettings settings = suggestion.getDirectSpellCheckerSettings();
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
fieldName = parser.currentName();
} else if (token.isValue()) {
parseTokenValue(parser, mapperService, fieldName, suggestion, settings, queryParserService.parseFieldMatcher());
} else {
throw new IllegalArgumentException("suggester[term] doesn't support field [" + fieldName + "]");
}
}
return suggestion;
}
private void parseTokenValue(XContentParser parser, MapperService mapperService, String fieldName, TermSuggestionContext suggestion,
DirectSpellcheckerSettings settings, ParseFieldMatcher parseFieldMatcher) throws IOException {
if (!(SuggestUtils.parseSuggestContext(parser, mapperService, fieldName, suggestion, parseFieldMatcher) || SuggestUtils.parseDirectSpellcheckerSettings(
parser, fieldName, settings, parseFieldMatcher))) {
throw new IllegalArgumentException("suggester[term] doesn't support [" + fieldName + "]");
}
}
}