Improve Code and remove duplication

Signed-off-by: Alex Alzate <aalzate@sonatype.com>

pom.xml

@@ -201,6 +201,13 @@
             <version>5.10.1</version>
             <scope>test</scope>
         </dependency>
+
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-params</artifactId>
+            <version>5.10.2</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>

src/main/java/org/cyclonedx/generators/AbstractBomGenerator.java

@@ -0,0 +1,52 @@
+package org.cyclonedx.generators;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import org.cyclonedx.CycloneDxSchema;
+import org.cyclonedx.Version;
+import org.cyclonedx.model.Bom;
+import org.cyclonedx.util.serializer.InputTypeSerializer;
+import org.cyclonedx.util.serializer.LifecycleSerializer;
+import org.cyclonedx.util.serializer.MetadataSerializer;
+import org.cyclonedx.util.serializer.OutputTypeSerializer;
+
+public abstract class AbstractBomGenerator extends CycloneDxSchema
+{
+  protected ObjectMapper mapper;
+
+  protected final Version version;
+
+  protected final Bom bom;
+
+  public AbstractBomGenerator(final Version version, final Bom bom) {
+    this.mapper = new ObjectMapper();
+    this.version = version;
+    this.bom = bom;
+  }
+
+  /**
+   * Returns the version of the CycloneDX schema used by this instance
+   * @return a CycloneDxSchemaVersion enum
+   */
+  public Version getSchemaVersion() {
+    return version;
+  }
+
+  protected void setupObjectMapper(boolean isXml) {
+    SimpleModule lifecycleModule = new SimpleModule();
+    lifecycleModule.addSerializer(new LifecycleSerializer(isXml));
+    mapper.registerModule(lifecycleModule);
+
+    SimpleModule metadataModule = new SimpleModule();
+    metadataModule.addSerializer(new MetadataSerializer(isXml, getSchemaVersion()));
+    mapper.registerModule(metadataModule);
+
+    SimpleModule inputTypeModule = new SimpleModule();
+    inputTypeModule.addSerializer(new InputTypeSerializer(isXml));
+    mapper.registerModule(inputTypeModule);
+
+    SimpleModule outputTypeModule = new SimpleModule();
+    outputTypeModule.addSerializer(new OutputTypeSerializer(isXml));
+    mapper.registerModule(outputTypeModule);
+  }
+}

src/main/java/org/cyclonedx/generators/BomGeneratorFactory.java

@@ -0,0 +1,35 @@
+/*
+ * This file is part of CycloneDX Core (Java).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright (c) OWASP Foundation. All Rights Reserved.
+ */
+package org.cyclonedx.generators;
+
+import org.cyclonedx.Version;
+import org.cyclonedx.generators.xml.BomXmlGenerator;
+import org.cyclonedx.model.Bom;
+import org.cyclonedx.generators.json.BomJsonGenerator;
+
+public class BomGeneratorFactory {
+
+    public static BomXmlGenerator createXml(Version version, Bom bom) {
+        return new BomXmlGenerator(bom, version);
+    }
+
+    public static BomJsonGenerator createJson(Version version, Bom bom) {
+        return new BomJsonGenerator(bom, version);
+    }
+}