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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.sa.searchdbabstraction.searchapi;
import java.util.ArrayList;
import java.util.List;
/**
* This class represents the filter stanza in a search statement.
*
* <p>
* The expected JSON structure for a filter stanza is as follows:
*
* <pre>
* {
* "filter": {
* "all": [ {query structure}, {query structure}, ... {query structure} ],
* "any": [ {query structure}, {query structure}, ... {query structure} ]
* }
* }
* </pre>
*/
public class Filter {
/**
* All queries in this list must evaluate to true for the filter to pass.
*/
private QueryStatement[] all;
/**
* Any one of the queries in this list must evaluate to true for the filter to pass.
*/
private QueryStatement[] any;
public QueryStatement[] getAll() {
return all;
}
public void setAll(QueryStatement[] all) {
this.all = all;
}
public QueryStatement[] getAny() {
return any;
}
public void setAny(QueryStatement[] any) {
this.any = any;
}
/**
* This method returns a string which represents this filter in syntax that is understandable by ElasticSearch and
* is suitable for inclusion in an ElasticSearch query string.
*
* @return - ElasticSearch syntax string.
*/
public String toElasticSearch() {
StringBuilder sb = new StringBuilder();
List<QueryStatement> notMatchQueries = new ArrayList<>();
sb.append("{");
sb.append("\"bool\": {");
// Add the queries from our 'all' list.
int matchQueriesCount = 0;
int notMatchQueriesCount = 0;
if (all != null) {
sb.append("\"must\": [");
for (QueryStatement query : all) {
if (matchQueriesCount > 0) {
sb.append(", ");
}
if (query.isNotMatch()) {
notMatchQueries.add(query);
} else {
sb.append(query.toElasticSearch());
matchQueriesCount++;
}
}
sb.append("],");
sb.append("\"must_not\": [");
for (QueryStatement query : notMatchQueries) {
if (notMatchQueriesCount > 0) {
sb.append(", ");
}
sb.append(query.toElasticSearch());
notMatchQueriesCount++;
}
sb.append("]");
}
// Add the queries from our 'any' list.
notMatchQueries.clear();
if (any != null) {
if (all != null) {
sb.append(",");
}
sb.append("\"should\": [");
matchQueriesCount = 0;
for (QueryStatement query : any) {
if (matchQueriesCount > 0) {
sb.append(", ");
}
if (query.isNotMatch()) {
notMatchQueries.add(query);
} else {
sb.append(query.toElasticSearch());
matchQueriesCount++;
}
}
sb.append("],");
notMatchQueriesCount = 0;
sb.append("\"must_not\": [");
for (QueryStatement query : notMatchQueries) {
if (notMatchQueriesCount > 0) {
sb.append(", ");
}
sb.append(query.toElasticSearch());
notMatchQueriesCount++;
}
sb.append("]");
}
sb.append("}");
sb.append("}");
return sb.toString();
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("{");
sb.append("all: [");
if (all != null) {
for (QueryStatement query : all) {
sb.append(query.toString());
}
}
sb.append("], ");
sb.append("any: [");
if (any != null) {
for (QueryStatement query : any) {
sb.append(query.toString());
}
}
sb.append("] ");
sb.append("}");
return sb.toString();
}
}
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