aai-core/src/main/java/org/onap/aai/parsers/query/LegacyQueryParser.java

   1 /**
   2  * ============LICENSE_START=======================================================
   3  * org.onap.aai
   4  * ================================================================================
   5  * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *    http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20 package org.onap.aai.parsers.query;
  21
  22 import com.att.eelf.configuration.EELFLogger;
  23 import com.att.eelf.configuration.EELFManager;
  24 import org.onap.aai.exceptions.AAIException;
  25 import org.onap.aai.introspection.Introspector;
  26 import org.onap.aai.introspection.Loader;
  27 import org.onap.aai.introspection.exceptions.AAIUnknownObjectException;
  28 import org.onap.aai.logging.LogFormatTools;
  29 import org.onap.aai.parsers.uri.Parsable;
  30 import org.onap.aai.parsers.uri.URIParser;
  31 import org.onap.aai.parsers.uri.URIToObject;
  32 import org.onap.aai.query.builder.QueryBuilder;
  33 import org.onap.aai.restcore.util.URITools;
  34 import org.onap.aai.schema.enums.PropertyMetadata;
  35 import org.onap.aai.serialization.db.EdgeType;
  36
  37 import javax.ws.rs.core.MultivaluedMap;
  38 import java.io.UnsupportedEncodingException;
  39 import java.net.URI;
  40 import java.net.URISyntaxException;
  41 import java.util.*;
  42 import java.util.Map.Entry;
  43
  44 /**
  45  * The Class LegacyQueryParser.
  46  */
  47 public class LegacyQueryParser extends QueryParser implements Parsable {
  48
  49         private static final EELFLogger LOGGER = EELFManager.getInstance().getLogger(LegacyQueryParser.class);
  50
  51         private Introspector previous = null;
  52
  53         /**
  54          * Instantiates a new legacy query parser.
  55          *
  56          * @param loader the loader
  57          * @param queryBuilder the query builder
  58          * @param uri the uri
  59          * @throws UnsupportedEncodingException the unsupported encoding exception
  60          * @throws AAIException the AAI exception
  61          */
  62         public LegacyQueryParser(Loader loader, QueryBuilder queryBuilder, URI uri) throws UnsupportedEncodingException, AAIException {
  63                 super(loader, queryBuilder, uri);
  64                 URIParser parser = new URIParser(loader, uri);
  65                 parser.parse(this);
  66         }
  67
  68         /**
  69          * Instantiates a new legacy query parser.
  70          *
  71          * @param loader the loader
  72          * @param queryBuilder the query builder
  73          * @param uri the uri
  74          * @param queryParams the query params
  75          * @throws UnsupportedEncodingException the unsupported encoding exception
  76          * @throws AAIException the AAI exception
  77          */
  78         public LegacyQueryParser(Loader loader, QueryBuilder queryBuilder, URI uri, MultivaluedMap<String, String> queryParams) throws UnsupportedEncodingException, AAIException {
  79                 super(loader, queryBuilder, uri);
  80                 URIParser parser = new URIParser(loader, uri, queryParams);
  81                 parser.parse(this);
  82         }
  83
  84         /**
  85          * Instantiates a new legacy query parser.
  86          *
  87          * @param loader the loader
  88          * @param queryBuilder the query builder
  89          */
  90         public LegacyQueryParser(Loader loader, QueryBuilder queryBuilder) {
  91                 super(loader, queryBuilder);
  92         }
  93
  94         /**
  95          * @throws AAIException
  96          * @{inheritDoc}
  97          */
  98         @Override
  99         public void processObject(Introspector obj, EdgeType type, MultivaluedMap<String, String> uriKeys) throws AAIException {
 100                 if (previous != null) {
 101                         this.parentResourceType = previous.getDbName();
 102                         queryBuilder.createEdgeTraversal(type, previous, obj);
 103                 }
 104                 if (previous == null) {
 105                         queryBuilder.createDBQuery(obj);
 106                         this.handleUriKeys(obj, uriKeys);
 107                 } else {
 108                         queryBuilder.createKeyQuery(obj);
 109                         this.handleUriKeys(obj, uriKeys);
 110                 }
 111                 previous = obj;
 112                 this.resultResource = obj.getDbName();
 113         }
 114
 115         /**
 116          * @{inheritDoc}
 117          */
 118         @Override
 119         public void processContainer(Introspector obj, EdgeType type, MultivaluedMap<String, String> uriKeys, boolean isFinalContainer) throws AAIException {
 120                 if (isFinalContainer) {
 121                         if (previous != null) {
 122                                 this.parentResourceType = previous.getDbName();
 123                                 queryBuilder.createEdgeTraversal(type, previous, obj);
 124                         }
 125
 126                         if (previous == null) {
 127                                 queryBuilder.createContainerQuery(obj);
 128                                 queryBuilder.markParentBoundary();
 129                         }
 130                         if (!uriKeys.isEmpty()) {
 131
 132                                 try {
 133                                         Introspector child = obj.newIntrospectorInstanceOfNestedProperty(obj.getChildName());
 134                                         this.handleUriKeys(child, uriKeys);
 135                                 } catch (AAIUnknownObjectException e) {
 136                                         LOGGER.warn("Skipping container child " + obj.getChildName() + " (Unknown Object) " +
 137                                                         LogFormatTools.getStackTop(e));
 138                                 }
 139                         }
 140
 141                         this.resultResource = obj.getChildDBName();
 142                         this.containerResource = obj.getName();
 143                 }
 144         }
 145         private void handleUriKeys(Introspector obj, MultivaluedMap<String, String> uriKeys) throws AAIException {
 146                 for (String key : uriKeys.keySet()) {
 147                         //to validate whether this property exists
 148                         if (!obj.hasProperty(key)) {
 149                                 throw new AAIException("AAI_3000", "property: " + key + " not found on " + obj.getDbName());
 150                         }
 151
 152                         List<String> values = uriKeys.get(key);
 153                         String dbPropertyName = key;
 154                         Map<String, String> linkedProperties = new HashMap<>();
 155                         final Map<PropertyMetadata, String> metadata = obj.getPropertyMetadata(key);
 156                         if (metadata.containsKey(PropertyMetadata.DATA_LINK)) {
 157                                 linkedProperties.put(key, metadata.get(PropertyMetadata.DATA_LINK));
 158                         }
 159                         if (metadata.containsKey(PropertyMetadata.DB_ALIAS)) {
 160                                 dbPropertyName = metadata.get(PropertyMetadata.DB_ALIAS);
 161                         }
 162
 163                         if (!linkedProperties.containsKey(key)) {
 164                                 if (values.size() > 1) {
 165                                         queryBuilder.getVerticesByIndexedProperty(dbPropertyName, obj.castValueAccordingToSchema(key, values));
 166                                 } else {
 167                                         queryBuilder.getVerticesByIndexedProperty(dbPropertyName, obj.castValueAccordingToSchema(key, values.get(0)));
 168                                 }
 169                         }
 170                         handleLinkedProperties(obj, uriKeys, linkedProperties);
 171                 }
 172         }
 173         private void handleLinkedProperties(Introspector obj, MultivaluedMap<String, String> uriKeys, Map<String, String> linkedProperties) throws AAIException {
 174
 175                 QueryBuilder[] builders = new QueryBuilder[linkedProperties.keySet().size()];
 176                 Set<Entry<String, String>> entrySet = linkedProperties.entrySet();
 177                 int i = 0;
 178                 Iterator<Entry<String, String>> itr = entrySet.iterator();
 179
 180                 while (itr.hasNext()) {
 181                         Entry<String, String> entry = itr.next();
 182                         Introspector child;
 183                         try {
 184                                 child = new URIToObject(this.latestLoader, new URI(URITools.replaceTemplates(obj, entry.getValue(), PropertyMetadata.DATA_LINK, true).orElse(""))).getEntity();
 185                         } catch (IllegalArgumentException | UnsupportedEncodingException | URISyntaxException e) {
 186                                 throw new AAIException("AAI_4000", e);
 187                         }
 188                         List<String> values = uriKeys.get(entry.getKey());
 189                         QueryBuilder builder = queryBuilder.newInstance();
 190                         builder.createEdgeTraversal(EdgeType.TREE, obj, child);
 191                         if (values.size() > 1) {
 192                                 builder.getVerticesByIndexedProperty(entry.getKey(), obj.castValueAccordingToSchema(entry.getKey(), values));
 193                         } else {
 194                                 builder.getVerticesByIndexedProperty(entry.getKey(), obj.castValueAccordingToSchema(entry.getKey(), values.get(0)));
 195                         }
 196
 197                         builders[i] = builder;
 198                         i++;
 199                 }
 200
 201                 queryBuilder.where(builders);
 202
 203         }
 204
 205         /**
 206          * @{inheritDoc}
 207          */
 208         @Override
 209         public void processNamespace(Introspector obj) {
 210
 211         }
 212
 213         /**
 214          * @{inheritDoc}
 215          */
 216         @Override
 217         public String getCloudRegionTransform() {
 218                 return "add";
 219         }
 220
 221         /**
 222          * @{inheritDoc}
 223          */
 224         @Override
 225         public boolean useOriginalLoader() {
 226                 return false;
 227         }
 228 }