2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2021-2022 Nordix Foundation.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.cps.spi.repository;
23 import java.util.HashMap;
24 import java.util.List;
26 import javax.persistence.EntityManager;
27 import javax.persistence.PersistenceContext;
28 import javax.persistence.Query;
29 import lombok.RequiredArgsConstructor;
30 import org.onap.cps.cpspath.parser.CpsPathPrefixType;
31 import org.onap.cps.cpspath.parser.CpsPathQuery;
32 import org.onap.cps.spi.entities.FragmentEntity;
33 import org.onap.cps.utils.JsonObjectMapper;
35 @RequiredArgsConstructor
36 public class FragmentRepositoryCpsPathQueryImpl implements FragmentRepositoryCpsPathQuery {
38 public static final String SIMILAR_TO_ABSOLUTE_PATH_PREFIX = "%/";
39 public static final String SIMILAR_TO_OPTIONAL_LIST_INDEX_POSTFIX = "(\\[[^/]*])?";
42 private EntityManager entityManager;
43 private final JsonObjectMapper jsonObjectMapper;
46 public List<FragmentEntity> findByAnchorAndCpsPath(final int anchorId, final CpsPathQuery cpsPathQuery) {
47 final var sqlStringBuilder = new StringBuilder("SELECT * FROM FRAGMENT WHERE anchor_id = :anchorId");
48 final Map<String, Object> queryParameters = new HashMap<>();
49 queryParameters.put("anchorId", anchorId);
50 sqlStringBuilder.append(" AND xpath SIMILAR TO :xpathRegex");
51 final String xpathRegex = getSimilarToXpathSqlRegex(cpsPathQuery);
52 queryParameters.put("xpathRegex", xpathRegex);
53 if (cpsPathQuery.hasLeafConditions()) {
54 sqlStringBuilder.append(" AND attributes @> :leafDataAsJson\\:\\:jsonb");
55 queryParameters.put("leafDataAsJson", jsonObjectMapper.asJsonString(
56 cpsPathQuery.getLeavesData()));
59 addTextFunctionCondition(cpsPathQuery, sqlStringBuilder, queryParameters);
60 final var query = entityManager.createNativeQuery(sqlStringBuilder.toString(), FragmentEntity.class);
61 setQueryParameters(query, queryParameters);
62 return query.getResultList();
65 private static String getSimilarToXpathSqlRegex(final CpsPathQuery cpsPathQuery) {
66 final var xpathRegexBuilder = new StringBuilder();
67 if (CpsPathPrefixType.ABSOLUTE.equals(cpsPathQuery.getCpsPathPrefixType())) {
68 xpathRegexBuilder.append(escapeXpath(cpsPathQuery.getXpathPrefix()));
70 xpathRegexBuilder.append(SIMILAR_TO_ABSOLUTE_PATH_PREFIX);
71 xpathRegexBuilder.append(escapeXpath(cpsPathQuery.getDescendantName()));
73 xpathRegexBuilder.append(SIMILAR_TO_OPTIONAL_LIST_INDEX_POSTFIX);
74 return xpathRegexBuilder.toString();
77 private static String escapeXpath(final String xpath) {
78 // See https://jira.onap.org/browse/CPS-500 for limitations of this basic escape mechanism
79 return xpath.replace("[@", "\\[@");
82 private static Integer getTextValueAsInt(final CpsPathQuery cpsPathQuery) {
84 return Integer.parseInt(cpsPathQuery.getTextFunctionConditionValue());
85 } catch (final NumberFormatException e) {
90 private static void addTextFunctionCondition(final CpsPathQuery cpsPathQuery, final StringBuilder sqlStringBuilder,
91 final Map<String, Object> queryParameters) {
92 if (cpsPathQuery.hasTextFunctionCondition()) {
93 sqlStringBuilder.append(" AND (");
94 sqlStringBuilder.append("attributes @> jsonb_build_object(:textLeafName, :textValue)");
96 .append(" OR attributes @> jsonb_build_object(:textLeafName, json_build_array(:textValue))");
97 queryParameters.put("textLeafName", cpsPathQuery.getTextFunctionConditionLeafName());
98 queryParameters.put("textValue", cpsPathQuery.getTextFunctionConditionValue());
99 final var textValueAsInt = getTextValueAsInt(cpsPathQuery);
100 if (textValueAsInt != null) {
101 sqlStringBuilder.append(" OR attributes @> jsonb_build_object(:textLeafName, :textValueAsInt)");
103 .append(" OR attributes @> jsonb_build_object(:textLeafName, json_build_array(:textValueAsInt))");
104 queryParameters.put("textValueAsInt", textValueAsInt);
106 sqlStringBuilder.append(")");
110 private static void setQueryParameters(final Query query, final Map<String, Object> queryParameters) {
111 for (final Map.Entry<String, Object> queryParameter : queryParameters.entrySet()) {
112 query.setParameter(queryParameter.getKey(), queryParameter.getValue());