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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* Copyright © 2017-2018 Amdocs
* ================================================================================
* Licensed 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.
* ============LICENSE_END=========================================================
*/
package org.onap.aai.sparky.aggregatevnf.search;
import java.util.Map;
import javax.json.Json;
import javax.json.JsonArray;
import javax.json.JsonArrayBuilder;
import javax.json.JsonObject;
import javax.json.JsonObjectBuilder;
/**
* Build a JSON payload to send to elastic search to get vnf search data.
*/
public class VnfSearchQueryBuilder {
/**
* Creates the suggestions query.
*
* @param maxResults maximum number of suggestions to fetch
* @param queryStr query string
* @return the json object
*/
/*
* { "vnfs" : { "text" : "VNFs", "completion" : { "field" : "entity_suggest", "size": 1 } } }
*/
public static JsonObject createSuggestionsQuery(String maxResults, String queryStr) {
JsonObjectBuilder jsonBuilder = Json.createObjectBuilder();
JsonObjectBuilder completionBlob = Json.createObjectBuilder();
completionBlob.add("field", "entity_suggest");
completionBlob.add("size", maxResults);
JsonObjectBuilder jsonAllBuilder = Json.createObjectBuilder();
jsonAllBuilder.add("text", queryStr);
jsonAllBuilder.add("completion", completionBlob);
jsonBuilder.add("vnfs", jsonAllBuilder.build());
return jsonBuilder.build();
}
public static JsonObject getTermBlob(String key, String value) {
JsonObjectBuilder termBlobBuilder = Json.createObjectBuilder();
JsonObjectBuilder jsonBuilder = Json.createObjectBuilder().add(key, value);
return termBlobBuilder.add("term", jsonBuilder.build()).build();
}
public static void getSummaryAggsBlob(JsonObjectBuilder aggsBlobBuilder, String aggsKey,
int resultSize) {
JsonObjectBuilder fieldBuilder =
Json.createObjectBuilder().add("field", aggsKey).add("size", resultSize);
JsonObject aggsFieldBlob = fieldBuilder.build();
JsonObjectBuilder defaultBlobBuilder = Json.createObjectBuilder().add("terms", aggsFieldBlob);
JsonObject defaultBlob = defaultBlobBuilder.build();
aggsBlobBuilder.add("default", defaultBlob);
}
public static void buildSingleTermCountQuery(JsonObjectBuilder jsonBuilder, String key,
String value) {
jsonBuilder.add("query", getTermBlob(key, value));
}
public static void buildSingleTermSummaryQuery(JsonObjectBuilder jsonBuilder, String key,
String value, String groupByKey) {
JsonObjectBuilder queryBlobBuilder = Json.createObjectBuilder();
JsonObjectBuilder aggsBlobBuilder = Json.createObjectBuilder();
queryBlobBuilder.add("constant_score",
Json.createObjectBuilder().add("filter", getTermBlob(key, value)));
getSummaryAggsBlob(aggsBlobBuilder, groupByKey, 0);
jsonBuilder.add("query", queryBlobBuilder.build());
jsonBuilder.add("aggs", aggsBlobBuilder.build());
}
public static void buildMultiTermSummaryQuery(JsonObjectBuilder jsonBuilder,
Map<String, String> attributes, String groupByKey) {
JsonObjectBuilder queryBlobBuilder = Json.createObjectBuilder();
JsonObjectBuilder aggsBlobBuilder = Json.createObjectBuilder();
JsonArrayBuilder mustBlobBuilder = Json.createArrayBuilder();
for (String key : attributes.keySet()) {
mustBlobBuilder.add(getTermBlob(key, attributes.get(key)));
}
JsonArray mustBlob = mustBlobBuilder.build();
queryBlobBuilder.add("constant_score", Json.createObjectBuilder().add("filter",
Json.createObjectBuilder().add("bool", Json.createObjectBuilder().add("must", mustBlob))));
getSummaryAggsBlob(aggsBlobBuilder, groupByKey, 0);
jsonBuilder.add("query", queryBlobBuilder.build());
jsonBuilder.add("aggs", aggsBlobBuilder.build());
}
public static void buildZeroTermSummaryQuery(JsonObjectBuilder jsonBuilder, String groupByKey) {
JsonObjectBuilder aggsBlobBuilder = Json.createObjectBuilder();
getSummaryAggsBlob(aggsBlobBuilder, groupByKey, 0);
jsonBuilder.add("aggs", aggsBlobBuilder.build());
}
public static void buildMultiTermCountQuery(JsonObjectBuilder jsonBuilder,
Map<String, String> attributes) {
JsonArrayBuilder mustBlobBuilder = Json.createArrayBuilder();
for (String key : attributes.keySet()) {
mustBlobBuilder.add(getTermBlob(key, attributes.get(key)));
}
jsonBuilder.add("query", Json.createObjectBuilder().add("bool",
Json.createObjectBuilder().add("must", mustBlobBuilder)));
}
public static JsonObject createSummaryByEntityTypeQuery(Map<String, String> attributes,
String groupByKey) {
JsonObjectBuilder jsonBuilder = Json.createObjectBuilder();
jsonBuilder.add("size", "0"); // avoid source data
if (attributes.size() == 0) {
buildZeroTermSummaryQuery(jsonBuilder, groupByKey);
} else if (attributes.size() == 1) {
Map.Entry<String, String> entry = attributes.entrySet().iterator().next();
buildSingleTermSummaryQuery(jsonBuilder, entry.getKey(), entry.getValue(), groupByKey);
} else {
buildMultiTermSummaryQuery(jsonBuilder, attributes, groupByKey);
}
return jsonBuilder.build();
}
public static JsonObject createEntityCountsQuery(Map<String, String> attributes) {
JsonObjectBuilder jsonBuilder = Json.createObjectBuilder();
if (attributes.size() == 1) {
Map.Entry<String, String> entry = attributes.entrySet().iterator().next();
buildSingleTermCountQuery(jsonBuilder, entry.getKey(), entry.getValue());
} else {
buildMultiTermCountQuery(jsonBuilder, attributes);
}
return jsonBuilder.build();
}
public static JsonArray getSortCriteria(String sortFieldName, String sortOrder) {
JsonArrayBuilder jsonBuilder = Json.createArrayBuilder();
jsonBuilder.add(Json.createObjectBuilder().add(sortFieldName,
Json.createObjectBuilder().add("order", sortOrder)));
return jsonBuilder.build();
}
}
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