JSON Import/Export

.gitignore

@@ -133,5 +133,3 @@
 **/java-gen
 **/src-gen/
 
-
-

neoemf-core/pom.xml

@@ -19,8 +19,8 @@
     </description>
 
     <properties>
-        <chronicle-map.version>3.21ea41</chronicle-map.version>
-        <chronicle-bytes.version>2.21ea43</chronicle-bytes.version>
+        <chronicle-map.version>3.22ea5</chronicle-map.version>
+        <chronicle-bytes.version>2.22ea17</chronicle-bytes.version>
         <log4j.version>2.14.1</log4j.version>
         <cglib.version>3.3.0</cglib.version>
     </properties>
@@ -143,6 +143,18 @@
             <optional>true</optional>
             <type>pom</type>
         </dependency>
+        <dependency>
+            <groupId>com.google.code.findbugs</groupId>
+            <artifactId>jsr305</artifactId>
+            <version>3.0.2</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.devialab</groupId>
+            <artifactId>jackson-jsonld-maven</artifactId>
+            <version>0.0.4</version>
+            <scope>compile</scope>
+        </dependency>
 
     </dependencies>
 

neoemf-data/berkeleydb/pom.xml

@@ -27,6 +27,12 @@
             <groupId>com.sleepycat</groupId>
             <artifactId>je</artifactId>
         </dependency>
+        <dependency>
+            <groupId>com.devialab</groupId>
+            <artifactId>jackson-jsonld-maven</artifactId>
+            <version>0.0.4</version>
+            <scope>compile</scope>
+        </dependency>
 
     </dependencies>
 

neoemf-data/blueprints/core/pom.xml

@@ -39,6 +39,12 @@
             <artifactId>org.eclipse.emf.ecore</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.devialab</groupId>
+            <artifactId>jackson-jsonld-maven</artifactId>
+            <version>0.0.4</version>
+            <scope>compile</scope>
+        </dependency>
 
     </dependencies>
 

neoemf-data/blueprints/neo4j/pom.xml

@@ -72,6 +72,12 @@
             <type>test-jar</type>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>com.devialab</groupId>
+            <artifactId>jackson-jsonld-maven</artifactId>
+            <version>0.0.4</version>
+            <scope>compile</scope>
+        </dependency>
 
     </dependencies>
 

neoemf-data/blueprints/pom.xml

@@ -24,5 +24,13 @@
         <blueprints.version>2.6.0</blueprints.version>
         <commons-configuration.version>1.10</commons-configuration.version>
     </properties>
+    <dependencies>
+        <dependency>
+            <groupId>com.devialab</groupId>
+            <artifactId>jackson-jsonld-maven</artifactId>
+            <version>0.0.4</version>
+            <scope>compile</scope>
+        </dependency>
+    </dependencies>
 
 </project>

neoemf-data/hbase/pom.xml

@@ -97,6 +97,12 @@
             <artifactId>junit-vintage-engine</artifactId>
             <version>${junit.version}</version>
         </dependency>
+        <dependency>
+            <groupId>com.devialab</groupId>
+            <artifactId>jackson-jsonld-maven</artifactId>
+            <version>0.0.4</version>
+            <scope>compile</scope>
+        </dependency>
 
 
     </dependencies>

neoemf-data/mapdb/pom.xml

@@ -36,6 +36,12 @@
             -->
             <!-- compatibility issue with Guava/HBase (15.0) -->
         </dependency>
+        <dependency>
+            <groupId>com.devialab</groupId>
+            <artifactId>jackson-jsonld-maven</artifactId>
+            <version>0.0.4</version>
+            <scope>compile</scope>
+        </dependency>
 
     </dependencies>
 

neoemf-data/mongodb/pom.xml

@@ -36,6 +36,12 @@
             <artifactId>de.flapdoodle.embed.mongo</artifactId>
             <scope>compile</scope><!-- FIXME Use 'test' scope: 'compile' is used to avoid errors in 'neoemf-tests' -->
         </dependency>
+        <dependency>
+            <groupId>com.devialab</groupId>
+            <artifactId>jackson-jsonld-maven</artifactId>
+            <version>0.0.4</version>
+            <scope>compile</scope>
+        </dependency>
 
     </dependencies>
 

neoemf-data/pom.xml

@@ -104,6 +104,12 @@
             <version>${project.version}</version>
             <scope>runtime</scope>
         </dependency>
+        <dependency>
+            <groupId>com.devialab</groupId>
+            <artifactId>jackson-jsonld-maven</artifactId>
+            <version>0.0.4</version>
+            <scope>compile</scope>
+        </dependency>
 
     </dependencies>
 

neoemf-io/pom.xml

@@ -22,9 +22,19 @@
         <stax.verions>1.0-2</stax.verions>
         <stax2.version>4.2.1</stax2.version>
         <woodstox.version>4.4.1</woodstox.version>
+        <jackson.version>2.13.1</jackson.version>
 
     </properties>
 
+    <repositories>
+        <repository>
+            <id>oss.sonatype.org-snapshot</id>
+            <url>http://oss.sonatype.org/content/repositories/snapshots</url>
+            <releases><enabled>false</enabled></releases>
+            <snapshots><enabled>true</enabled></snapshots>
+        </repository>
+    </repositories>
+
     <dependencies>
 
         <!-- Commons -->
@@ -82,6 +92,24 @@
             <artifactId>org.eclipse.emf.ecore.xcore.lib</artifactId>
         </dependency>
 
+        <!-- JSON -->
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>${jackson.version}</version>
+            <scope>compile</scope>
+        </dependency>
+
+        <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-core</artifactId>
+            <version>${jackson.version}</version>
+            <scope>compile</scope>
+        </dependency>
+
+
+
         <!-- Test -->
 
         <dependency>
@@ -111,14 +139,24 @@
             <artifactId>assertj-core</artifactId>
         </dependency>
 
+        <dependency>
+            <groupId>org.emfjson</groupId>
+            <artifactId>emfjson-jackson</artifactId>
+            <version>1.3.0</version>
+            <type>bundle</type>
+        </dependency>
+
         <!-- Test: EMF -->
 
+        <!--
         <dependency>
             <groupId>org.eclipse.emf</groupId>
             <artifactId>org.eclipse.emf.ecore.xmi</artifactId>
             <scope>test</scope>
         </dependency>
 
+        -->
+
 
         <!-- Test: Eclipse Runtime -->
 
@@ -129,7 +167,7 @@
         <dependency>
             <groupId>org.eclipse.platform</groupId>
             <artifactId>org.eclipse.core.runtime</artifactId>
-            <version>[3.20.0,)</version>
+            <version>3.23.0</version>
             <scope>test</scope>
         </dependency>
 
@@ -156,6 +194,10 @@
             <type>pom</type>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.eclipse.emf</groupId>
+            <artifactId>org.eclipse.emf.ecore.xmi</artifactId>
+        </dependency>
 
     </dependencies>
 

neoemf-io/src/main/java/fr/inria/atlanmod/neoemf/io/AbstractNotifier.java

@@ -79,7 +79,7 @@ public void notifyInitialize() throws IOException {
 
     @Override
     public void notifyStartElement(ProxyElement element) throws IOException {
-        checkNotNull(element, "element");
+       checkNotNull(element, "element");
 
         for (H h : handlers) {
             h.onStartElement(element);

neoemf-io/src/main/java/fr/inria/atlanmod/neoemf/io/Migrator.java

@@ -19,14 +19,17 @@
 import fr.inria.atlanmod.neoemf.io.reader.AbstractReader;
 import fr.inria.atlanmod.neoemf.io.reader.DefaultMapperReader;
 import fr.inria.atlanmod.neoemf.io.reader.Reader;
-import fr.inria.atlanmod.neoemf.io.reader.XmiStreamReader;
+import fr.inria.atlanmod.neoemf.io.reader.xmi.XmiStreamReader;
 import fr.inria.atlanmod.neoemf.io.writer.DefaultMapperWriter;
 import fr.inria.atlanmod.neoemf.io.writer.Writer;
-import fr.inria.atlanmod.neoemf.io.writer.XmiStreamWriter;
+import fr.inria.atlanmod.neoemf.io.writer.json.JsonStreamWriter;
+import fr.inria.atlanmod.neoemf.io.writer.xmi.XmiStreamWriter;
 
 import org.atlanmod.commons.annotation.VisibleForTesting;
 import org.atlanmod.commons.log.Level;
 import org.atlanmod.commons.log.Log;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.Closeable;
 import java.io.File;
@@ -285,6 +288,36 @@ public Migrator<T> toXmi(@WillNotClose OutputStream stream) throws IOException {
         return to(new XmiStreamWriter(stream));
     }
 
+    /**
+     * Specifies the JSON {@code file} where to write the data.
+     *
+     * @param file the file where to write
+     *
+     * @return this migrator (for chaining)
+     *
+     * @throws IOException if an I/O error occurs during the creation
+     * @see #toXmi(File, boolean)
+     */
+    @Nonnull
+    public Migrator<T> toJson(File file) throws IOException {
+        OutputStream outputStream = new FileOutputStream(file);
+        return toJson(outputStream);
+    }
+
+    /**
+     * Specifies the {@code stream} where to write the data.
+     *
+     * @param stream the file where to write
+     *
+     * @return this migrator (for chaining)
+     *
+     * @throws IOException if an I/O error occurs when writing
+     */
+    @Nonnull
+    public Migrator<T> toJson(@WillNotClose OutputStream stream) throws  IOException {
+        return to(new JsonStreamWriter(stream));
+    }
+
     //endregion
 
     //region Listeners
@@ -370,6 +403,8 @@ public void migrate() throws IOException {
         try {
             // Bind handlers and notifiers
             Collection<Handler> handlers = new ArrayList<>(listeners.size() + writers.size());
+            final Logger logger = LoggerFactory.getLogger(this.getClass().getName());
+            logger.info("writers :: {}", writers.toArray());
             handlers.addAll(listeners);
             handlers.addAll(writers);
             reader.addNext(new NoopProcessor(handlers));

neoemf-io/src/main/java/fr/inria/atlanmod/neoemf/io/processor/EcoreMapper.java

@@ -24,6 +24,8 @@
 import org.eclipse.emf.ecore.EStructuralFeature;
 import org.eclipse.emf.ecore.util.ExtendedMetaData;
 import org.eclipse.emf.ecore.util.FeatureMapUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.util.ArrayDeque;
@@ -45,6 +47,8 @@ public class EcoreMapper extends AbstractProcessor {
     /**
      * A LIFO that holds the current {@link Id} chain.
      */
+
+   final Logger logger = LoggerFactory.getLogger(this.getClass().getName());
     @Nonnull
     private final Deque<Id> identifiers = new ArrayDeque<>();
 
@@ -112,7 +116,13 @@ private void processElementAsRoot(ProxyElement element) throws IOException {
         checkNotNull(element.getMetaClass(), "The root element must have a namespace");
 
         // Retrieve the current EClass & define the meta-class of the current element if not present
+        // element is not null
+       // logger.info("ProxyElement is null:: {}", element == null);
         final ProxyClass metaClass = element.getMetaClass();
+        // metaClass is not null
+        //logger.info("metaClass is null:: {}", metaClass == null);
+        // the following condition is true
+        //logger.info("metaClass name space getOrgin is null:: {}", metaClass.getNamespace().getOrigin() == null);
         final EClass eClass = getClass(element.getName(), metaClass.getNamespace().getOrigin());
         metaClass.setOrigin(eClass);
 
@@ -281,8 +291,10 @@ private EStructuralFeature getFeature(String name) {
      */
     @Nonnull
     private EClass getClass(String name, EPackage ePackage) {
+
+        logger.info("ePackage is null :: {}", ePackage == null);
         EClass eClass = (EClass) ePackage.getEClassifier(name);
-        checkNotNull(eClass, "Unable to find EClass '%s' from EPackage '%s'", name, ePackage.getNsURI());
+       checkNotNull(eClass, "Unable to find EClass '%s' from EPackage '%s'", name, ePackage.getNsURI());
 
         return eClass;
     }