Update and add missing header and Javadoc

- Convert copyright info in header to SPDX FileTag format
- Add missing license info header
- author "gary" -> "Gary O'Neall"
- Add few missing Javadoc for methods and classes

Signed-off-by: Arthit Suriyawongkul <arthit@gmail.com>

Author: bact

src/main/java/org/spdx/spdxRdfStore/CompatibilityUpgrader.java

@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2020 Source Auditor Inc.
- * <p>
+ * SPDX-FileCopyrightText: Copyright (c) 2020 Source Auditor Inc.
+ * SPDX-FileType: SOURCE
  * SPDX-License-Identifier: Apache-2.0
  * <p>
  *   Licensed under the Apache License, Version 2.0 (the "License");
@@ -48,7 +48,6 @@
 /**
  * Updates the RDF model for compatibility with the current version of the spec
  * @author Gary O'Neall
- *
  */
 public class CompatibilityUpgrader {
 

src/main/java/org/spdx/spdxRdfStore/MissingDataTypeAndClassRestriction.java

@@ -1,7 +1,6 @@
 /**
- * Copyright (c) 2020 Source Auditor Inc.
- *
- * <p>
+ * SPDX-FileCopyrightText: Copyright (c) 2020 Source Auditor Inc.
+ * SPDX-FileType: SOURCE
  * SPDX-License-Identifier: Apache-2.0
  * <p>
  *   Licensed under the Apache License, Version 2.0 (the "License");
@@ -22,7 +21,6 @@
  * Exceptions related to missing restrictions in the SPDX OWL ontology
  * 
  * @author Gary O'Neall
- *
  */
 public class MissingDataTypeAndClassRestriction extends SpdxRdfException {
 

src/main/java/org/spdx/spdxRdfStore/OutputFormat.java

@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2020 Source Auditor Inc.
- * <p>
+ * SPDX-FileCopyrightText: Copyright (c) 2020 Source Auditor Inc.
+ * SPDX-FileType: SOURCE
  * SPDX-License-Identifier: Apache-2.0
  * <p>
  *   Licensed under the Apache License, Version 2.0 (the "License");
@@ -19,8 +19,7 @@
 
 /**
  * Formats supported for serializing RDF
- * 
- * 
+ *
  * @author Gary O'Neall
  */
 public enum OutputFormat {

src/main/java/org/spdx/spdxRdfStore/RdfSpdxModelManager.java

@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2020 Source Auditor Inc.
- * <p>
+ * SPDX-FileCopyrightText: Copyright (c) 2020 Source Auditor Inc.
+ * SPDX-FileType: SOURCE
  * SPDX-License-Identifier: Apache-2.0
  * <p>
  *   Licensed under the Apache License, Version 2.0 (the "License");
@@ -85,7 +85,6 @@
  * If a URI type, the ID namespace is either the listed license namespace or the document URI.
  * 
  * @author Gary O'Neall
- *
  */
 @SuppressWarnings("LoggingSimilarMessage")
 public class RdfSpdxModelManager implements IModelStoreLock {
@@ -102,12 +101,22 @@ public class RdfSpdxModelManager implements IModelStoreLock {
      * subset of the listed license namespace to be used for matching
      */
     private static final CharSequence SPDX_LISTED_LICENSE_SUBPREFIX = "://spdx.org/licenses/";
-	
+
+	/**
+	 * An iterator for traversing RDF list objects associated with a specific property of a resource
+	 */
 	public class RdfListIterator implements Iterator<Object> {
-		
+
 		final NodeIterator listIterator;
 		private final Property property;
 
+		/**
+		 * Constructs an RdfListIterator for a given resource and property
+		 *
+		 * @param idResource the resource whose property values are to be iterated
+		 * @param property the property whose values are to be iterated
+		 * @throws NullPointerException if idResource or property is null
+		 */
 		public RdfListIterator(Resource idResource, Property property) {
 			Objects.requireNonNull(idResource, "ID resource can not be null");
 			Objects.requireNonNull(property, "Property resource can not be null");

src/main/java/org/spdx/spdxRdfStore/RdfStore.java

@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2020 Source Auditor Inc.
- * <p>
+ * SPDX-FileCopyrightText: Copyright (c) 2020 Source Auditor Inc.
+ * SPDX-FileType: SOURCE
  * SPDX-License-Identifier: Apache-2.0
  * <p>
  *   Licensed under the Apache License, Version 2.0 (the "License");
@@ -57,7 +57,6 @@
  * Model Store implemented using RDF
  * 
  * @author Gary O'Neall
- *
  */
 @SuppressWarnings("LoggingSimilarMessage")
 public class RdfStore implements IModelStore, ISerializableModelStore {

src/main/java/org/spdx/spdxRdfStore/SpdxOwlOntology.java

@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2020 Source Auditor Inc.
- * <p>
+ * SPDX-FileCopyrightText: Copyright (c) 2020 Source Auditor Inc.
+ * SPDX-FileType: SOURCE
  * SPDX-License-Identifier: Apache-2.0
  * <p>
  *   Licensed under the Apache License, Version 2.0 (the "License");
@@ -45,7 +45,6 @@
  * Singleton class to manage the OWL ontology
  * 
  * @author Gary O'Neall
- *
  */
 @SuppressWarnings("LoggingSimilarMessage")
 public class SpdxOwlOntology {

src/main/java/org/spdx/spdxRdfStore/SpdxRdfException.java

@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2020 Source Auditor Inc.
- * <p>
+ * SPDX-FileCopyrightText: Copyright (c) 2020 Source Auditor Inc.
+ * SPDX-FileType: SOURCE
  * SPDX-License-Identifier: Apache-2.0
  * <p>
  *   Licensed under the Apache License, Version 2.0 (the "License");
@@ -23,7 +23,6 @@
  * Exceptions related to RDF storage of SPDX documents
  * 
  * @author Gary O'Neall
- *
  */
 public class SpdxRdfException extends InvalidSPDXAnalysisException {
 

src/main/java/org/spdx/spdxRdfStore/SpdxResourceFactory.java

@@ -1,6 +1,6 @@
 /**
- * Copyright (c) 2020 Source Auditor Inc.
- * <p>
+ * SPDX-FileCopyrightText: Copyright (c) 2020 Source Auditor Inc.
+ * SPDX-FileType: SOURCE
  * SPDX-License-Identifier: Apache-2.0
  * <p>
  *   Licensed under the Apache License, Version 2.0 (the "License");
@@ -15,7 +15,6 @@
  *   See the License for the specific language governing permissions and
  *   limitations under the License.
  */
-
 package org.spdx.spdxRdfStore;
 
 import java.util.Objects;
@@ -67,9 +66,13 @@ public static Resource typeToResource(String type) {
 			return ResourceFactory.createResource(SpdxConstantsCompatV2.SPDX_NAMESPACE + type); 
 		}
 	}
-	
+
 	/**
-	 * @return URI for the type or className
+	 * Converts a class name to its corresponding URI
+	 *
+	 * @param className the name of the class to convert to a URI
+	 * @return the URI for the type or the class name
+	 * @throws NullPointerException if the className is null
 	 */
 	public static String classNameToUri(String className) {
 		Objects.requireNonNull(className);

src/test/java/org/spdx/library/model/compat/v2/AnnotationTest.java

@@ -1,7 +1,6 @@
-package org.spdx.library.model.compat.v2;
 /**
- * Copyright (c) 2019 Source Auditor Inc.
- *
+ * SPDX-FileCopyrightText: Copyright (c) 2019 Source Auditor Inc.
+ * SPDX-FileType: SOURCE
  * SPDX-License-Identifier: Apache-2.0
  * 
  *   Licensed under the Apache License, Version 2.0 (the "License");
@@ -16,7 +15,7 @@
  *   See the License for the specific language governing permissions and
  *   limitations under the License.
  */
-
+package org.spdx.library.model.compat.v2;
 
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;
@@ -37,8 +36,7 @@
 import junit.framework.TestCase;
 
 /**
- * @author gary
- *
+ * @author Gary O'Neall
  */
 public class AnnotationTest extends TestCase {
 

src/test/java/org/spdx/library/model/compat/v2/ByteOffsetPointerTest.java

@@ -1,7 +1,6 @@
-package org.spdx.library.model.compat.v2;
 /**
- * Copyright (c) 2020 Source Auditor Inc.
- *
+ * SPDX-FileCopyrightText: Copyright (c) 2020 Source Auditor Inc.
+ * SPDX-FileType: SOURCE
  * SPDX-License-Identifier: Apache-2.0
  * 
  *   Licensed under the Apache License, Version 2.0 (the "License");
@@ -16,7 +15,7 @@
  *   See the License for the specific language governing permissions and
  *   limitations under the License.
  */
-
+package org.spdx.library.model.compat.v2;
 
 import java.util.List;
 
@@ -35,8 +34,7 @@
 import junit.framework.TestCase;
 
 /**
- * @author gary
- *
+ * @author Gary O'Neall
  */
 public class ByteOffsetPointerTest extends TestCase {