aai-core/src/main/java/org/openecomp/aai/introspection/PojoLoader.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * org.openecomp.aai
   4  * ================================================================================
   5  * Copyright (C) 2017 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
  21 package org.openecomp.aai.introspection;
  22
  23 import java.io.StringReader;
  24 import java.util.Map;
  25
  26 import javax.xml.bind.JAXBContext;
  27 import javax.xml.bind.JAXBException;
  28 import javax.xml.bind.Unmarshaller;
  29 import javax.xml.transform.stream.StreamSource;
  30
  31 import org.eclipse.persistence.jaxb.UnmarshallerProperties;
  32
  33 import org.openecomp.aai.db.props.AAIProperties;
  34 import org.openecomp.aai.introspection.exceptions.AAIUnknownObjectException;
  35 import org.openecomp.aai.introspection.exceptions.AAIUnmarshallingException;
  36 import org.openecomp.aai.logging.ErrorLogHelper;
  37 import org.openecomp.aai.restcore.MediaType;
  38 import org.openecomp.aai.workarounds.NamingExceptions;
  39 import com.att.eelf.configuration.EELFLogger;
  40 import com.att.eelf.configuration.EELFManager;
  41 import com.google.common.base.CaseFormat;
  42 import org.eclipse.persistence.jaxb.JAXBContextFactory;
  43
  44 public class PojoLoader extends Loader {
  45
  46         private static final EELFLogger LOGGER = EELFManager.getInstance().getLogger(PojoLoader.class);
  47         private static final String POJO_BASE_PACKAGE_NAME = "org.openecomp.aai.domain.yang";
  48
  49         protected JAXBContext context;
  50         private final String pojoPackageName;
  51
  52         protected PojoLoader(Version version) {
  53                 super(version, ModelType.POJO);
  54
  55                 if (!version.equals(AAIProperties.LATEST)) {
  56                         pojoPackageName = POJO_BASE_PACKAGE_NAME + "." + version;
  57                 } else {
  58                         pojoPackageName = POJO_BASE_PACKAGE_NAME;
  59                 }
  60
  61                 try {
  62                         context = JAXBContextFactory.createContext(pojoPackageName, this.getClass().getClassLoader());
  63                 } catch (JAXBException e) {
  64                         LOGGER.error("JAXBException while instantiation contect for PojoLoader", e);
  65                 }
  66         }
  67
  68         @Override
  69         public Introspector introspectorFromName(String name) throws AAIUnknownObjectException {
  70                 return IntrospectorFactory.newInstance(ModelType.POJO, objectFromName(name));
  71         }
  72
  73         @Override
  74         public Object objectFromName(String name) throws AAIUnknownObjectException {
  75
  76                 final String sanitizedName = NamingExceptions.getInstance().getObjectName(name);
  77                 final String upperCamel;
  78
  79                 //Contains any uppercase, then assume it's upper camel
  80                 if (sanitizedName.matches(".*[A-Z].*")) {
  81                         upperCamel = sanitizedName;
  82                 } else {
  83                         upperCamel = CaseFormat.LOWER_HYPHEN.to(CaseFormat.UPPER_CAMEL, sanitizedName);
  84                 }
  85
  86                 final String objectClassName;
  87
  88                 if (!upperCamel.contains(pojoPackageName)) {
  89                         objectClassName = pojoPackageName + "." + upperCamel;
  90                 } else {
  91                         objectClassName = upperCamel;
  92                 }
  93
  94                 try {
  95                         return Class.forName(objectClassName).newInstance();
  96                 } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) {
  97                         throw new AAIUnknownObjectException("Unrecognized AAI object " + name);
  98                 }
  99         }
 100
 101         @Override
 102         protected void process(Version version) {
 103                 LOGGER.warn("PojoLoader.process(Version) has not been implemented");
 104         }
 105
 106         @Override
 107         public Introspector unmarshal(String type, String json, MediaType mediaType) throws AAIUnmarshallingException {
 108
 109                  try {
 110                         final Unmarshaller unmarshaller = context.createUnmarshaller();
 111
 112                         if (mediaType.equals(MediaType.APPLICATION_JSON_TYPE)) {
 113                         unmarshaller.setProperty(UnmarshallerProperties.MEDIA_TYPE, "application/json");
 114                         unmarshaller.setProperty(UnmarshallerProperties.JSON_INCLUDE_ROOT, false);
 115                                 unmarshaller.setProperty(UnmarshallerProperties.JSON_WRAPPER_AS_ARRAY_NAME, true);
 116                         }
 117
 118                         final Object clazz = objectFromName(type);
 119                         final Object obj = unmarshaller.unmarshal(new StreamSource(new StringReader(json)), clazz.getClass()).getValue();
 120
 121                         return IntrospectorFactory.newInstance(ModelType.POJO, obj);
 122                  } catch (JAXBException e) {
 123                         ErrorLogHelper.logError("AAI_4007", "Could not unmarshall: " + e.getMessage());
 124                         throw new AAIUnmarshallingException("Could not unmarshall: " + e.getMessage());
 125                 } catch (AAIUnknownObjectException e) {
 126                         throw new AAIUnmarshallingException("Could not unmarshall: " + e.getMessage(), e);
 127                 }
 128         }
 129
 130         @Override
 131         public Map<String, Introspector> getAllObjects() {
 132                 //TODO
 133                 return null;
 134         }
 135
 136 }