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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.aggregations.bucket.terms;
import org.elasticsearch.common.CheckedBiConsumer;
import org.elasticsearch.common.CheckedFunction;
import org.elasticsearch.common.xcontent.ObjectParser;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentParserUtils;
import org.elasticsearch.search.aggregations.Aggregation;
import org.elasticsearch.search.aggregations.Aggregations;
import org.elasticsearch.search.aggregations.ParsedMultiBucketAggregation;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Supplier;
import static org.elasticsearch.search.aggregations.bucket.terms.InternalTerms.DOC_COUNT_ERROR_UPPER_BOUND_FIELD_NAME;
import static org.elasticsearch.search.aggregations.bucket.terms.InternalTerms.SUM_OF_OTHER_DOC_COUNTS;
public abstract class ParsedTerms extends ParsedMultiBucketAggregation implements Terms {
protected long docCountErrorUpperBound;
protected long sumOtherDocCount;
@Override
public long getDocCountError() {
return docCountErrorUpperBound;
}
@Override
public long getSumOfOtherDocCounts() {
return sumOtherDocCount;
}
@Override
public List getBuckets() {
return buckets;
}
@Override
public Terms.Bucket getBucketByKey(String term) {
for (Terms.Bucket bucket : getBuckets()) {
if (bucket.getKeyAsString().equals(term)) {
return bucket;
}
}
return null;
}
@Override
protected XContentBuilder doXContentBody(XContentBuilder builder, Params params) throws IOException {
builder.field(DOC_COUNT_ERROR_UPPER_BOUND_FIELD_NAME.getPreferredName(), getDocCountError());
builder.field(SUM_OF_OTHER_DOC_COUNTS.getPreferredName(), getSumOfOtherDocCounts());
builder.startArray(CommonFields.BUCKETS.getPreferredName());
for (Terms.Bucket bucket : getBuckets()) {
bucket.toXContent(builder, params);
}
builder.endArray();
return builder;
}
static void declareParsedTermsFields(final ObjectParser objectParser,
final CheckedFunction bucketParser) {
declareMultiBucketAggregationFields(objectParser, bucketParser::apply, bucketParser::apply);
objectParser.declareLong((parsedTerms, value) -> parsedTerms.docCountErrorUpperBound = value ,
DOC_COUNT_ERROR_UPPER_BOUND_FIELD_NAME);
objectParser.declareLong((parsedTerms, value) -> parsedTerms.sumOtherDocCount = value,
SUM_OF_OTHER_DOC_COUNTS);
}
public abstract static class ParsedBucket extends ParsedMultiBucketAggregation.ParsedBucket implements Terms.Bucket {
boolean showDocCountError = false;
protected long docCountError;
@Override
public long getDocCountError() {
return docCountError;
}
@Override
public final XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
builder.startObject();
keyToXContent(builder);
builder.field(CommonFields.DOC_COUNT.getPreferredName(), getDocCount());
if (showDocCountError) {
builder.field(DOC_COUNT_ERROR_UPPER_BOUND_FIELD_NAME.getPreferredName(), getDocCountError());
}
getAggregations().toXContentInternal(builder, params);
builder.endObject();
return builder;
}
static B parseTermsBucketXContent(final XContentParser parser, final Supplier bucketSupplier,
final CheckedBiConsumer keyConsumer)
throws IOException {
final B bucket = bucketSupplier.get();
final List aggregations = new ArrayList<>();
XContentParser.Token token;
String currentFieldName = parser.currentName();
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token.isValue()) {
if (CommonFields.KEY_AS_STRING.getPreferredName().equals(currentFieldName)) {
bucket.setKeyAsString(parser.text());
} else if (CommonFields.KEY.getPreferredName().equals(currentFieldName)) {
keyConsumer.accept(parser, bucket);
} else if (CommonFields.DOC_COUNT.getPreferredName().equals(currentFieldName)) {
bucket.setDocCount(parser.longValue());
} else if (DOC_COUNT_ERROR_UPPER_BOUND_FIELD_NAME.getPreferredName().equals(currentFieldName)) {
bucket.docCountError = parser.longValue();
bucket.showDocCountError = true;
}
} else if (token == XContentParser.Token.START_OBJECT) {
XContentParserUtils.parseTypedKeysObject(parser, Aggregation.TYPED_KEYS_DELIMITER, Aggregation.class,
aggregations::add);
}
}
bucket.setAggregations(new Aggregations(aggregations));
return bucket;
}
}
}