Add modified mongo-jackson-codec files to repository

This will mean we no longer depend on our custom version of the codec
being available at compile time - we instead depend on the public version
and 'apply' our changes at compile time with the maven shade plugin. The
package-info.java file describes the changes (+ motivation for these changes)
made to the public library.

pom.xml

@@ -117,7 +117,8 @@
             <groupId>fr.javatic.mongo</groupId>
             <artifactId>mongo-jackson-codec</artifactId>
             <version>3.2.0__0.4</version>
-            <!-- version should be kept at 3.2.0__0.4 because of our modifiers we make to this lib -->
+            <!-- version should be kept at 3.2.0__0.4 to ensure
+            compatability with overriden classes in this codebase -->
         </dependency>
         <dependency>
             <groupId>de.undercouch</groupId>

src/main/java/fr/javatic/mongo/jacksonCodec/Entity.java

@@ -0,0 +1,7 @@
+package fr.javatic.mongo.jacksonCodec;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Entity {}

src/main/java/fr/javatic/mongo/jacksonCodec/JacksonCodecProvider.java

@@ -0,0 +1,25 @@
+package fr.javatic.mongo.jacksonCodec;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.bson.codecs.Codec;
+import org.bson.codecs.configuration.CodecProvider;
+import org.bson.codecs.configuration.CodecRegistry;
+
+public class JacksonCodecProvider implements CodecProvider {
+
+    private final ObjectMapper bsonObjectMapper;
+
+    public JacksonCodecProvider(final ObjectMapper bsonObjectMapper) {
+        this.bsonObjectMapper = bsonObjectMapper;
+    }
+
+    @Override
+    public <T> Codec<T> get(final Class<T> type, final CodecRegistry registry) {
+        if (type.getAnnotationsByType(Entity.class).length > 0) {
+            return new JacksonCodec<>(bsonObjectMapper, registry, type);
+        } else {
+            return null;
+        }
+    }
+
+}

src/main/java/fr/javatic/mongo/jacksonCodec/objectId/Id.java

@@ -0,0 +1,16 @@
+package fr.javatic.mongo.jacksonCodec.objectId;
+
+import com.fasterxml.jackson.annotation.JacksonAnnotationsInside;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+@Retention(RetentionPolicy.RUNTIME)
+@JacksonAnnotationsInside
+@JsonProperty("_id")
+@JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL)
+@JsonDeserialize
+public @interface Id {}

src/main/java/fr/javatic/mongo/jacksonCodec/package-info.java

@@ -0,0 +1,15 @@
+/**
+ * Uses maven-shade-plugin to override classes in fr.javatic.mongo:mongo-jackson-codec
+ *
+ * Similar to what's done with org.apache.commons:commons-pool2 in qLib, we modify and create
+ * classes in this codebase in order to override fr.javatic.mongo.jacksonCodec classes in the final jar.
+ *
+ * These changes add an @Entity annotation and fix serializers in the @Id annotation.
+ * Without these changes the mongodb driver fails to deserialize documents. Additionally, an @Entity
+ * annotation allows us to selectively include types, instead of mapping ALL types.
+ *
+ * The files present here were copied from:
+ * https://github.com/FrozenOrb/mongo-jackson-codec/commit/b3a168e5f5f7464c3721fd9ebc81a4cca7d4db2f (entire common)
+ * https://github.com/FrozenOrb/mongo-jackson-codec/commit/20c161337900bb7daabd3d9d99ead1be35c0c41b (non-build files only)
+ */
+package fr.javatic.mongo.jacksonCodec;