Version update of Tableschema lib

Author: JohannesJander

pom.xml

@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>io.frictionlessdata</groupId>
     <artifactId>datapackage-java</artifactId>
-    <version>0.2.4-SNAPSHOT</version>
+    <version>0.3.0-SNAPSHOT</version>
     <packaging>jar</packaging>
     <issueManagement>
         <url>https://github.com/frictionlessdata/datapackage-java/issues</url>
@@ -20,10 +20,10 @@
         <java.version>8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <tableschema-java-version>0.2.4</tableschema-java-version>
+        <tableschema-java-version>0.3.0</tableschema-java-version>
         <hamcrest.version>1.3</hamcrest.version>
         <junit.version>5.9.1</junit.version>
-        <slf4j-simple.version>1.7.36</slf4j-simple.version>
+        <slf4j-simple.version>2.0.5</slf4j-simple.version>
         <apache-commons-collections4.version>4.4</apache-commons-collections4.version>
         <everit-json-schema.version>1.14.1</everit-json-schema.version>
         <maven-compiler-plugin.version>3.10.1</maven-compiler-plugin.version>

src/main/java/io/frictionlessdata/datapackage/JSONBase.java

@@ -405,7 +405,7 @@ public static ObjectNode dereference(File fileObj, Path basePath, boolean isArch
      */
 
     private static ObjectNode dereference(String url, URL basePath) throws IOException {
-        JsonNode dereferencedObj = null;
+        JsonNode dereferencedObj;
 
         if (isValidUrl(url)) {
             // Create the dereferenced object from the remote file.

src/main/java/io/frictionlessdata/datapackage/Package.java

@@ -197,15 +197,15 @@ public Package(Path descriptorFile, boolean strict) throws Exception {
 
 
     private FileSystem getTargetFileSystem(File outputDir, boolean zipCompressed) throws IOException {
-        FileSystem outFs = null;
+        FileSystem outFs;
         if (zipCompressed) {
             if (outputDir.exists()) {
                 throw new DataPackageException("Cannot save into existing ZIP file: "
                         +outputDir.getName());
             }
             Map<String, String> env = new HashMap<>();
             env.put("create", "true");
-            outFs = FileSystems.newFileSystem(URI.create("jar:" + outputDir.toURI().toString()), env);
+            outFs = FileSystems.newFileSystem(URI.create("jar:" + outputDir.toURI()), env);
         } else {
             if (!(outputDir.isDirectory())) {
                 throw new DataPackageException("Target for save() exists and is a regular file: "
@@ -500,8 +500,8 @@ public void removeProperty(String key){
     /**
      * Validation is strict or unstrict depending on how the package was
      * instantiated with the strict flag.
-     * @throws IOException
-     * @throws DataPackageException
+     * @throws IOException if something goes wrong reading the datapackage
+     * @throws DataPackageException if validation fails and validation is strict
      */
     final void validate() throws IOException, DataPackageException{
         try{
@@ -813,7 +813,7 @@ private static URL getParentUrl(URL urlSource) throws URISyntaxException, Malfor
 
     // https://stackoverflow.com/a/47595502/2535335
     private static boolean isArchive(File f) throws IOException {
-        int fileSignature = 0;
+        int fileSignature;
         RandomAccessFile raf = new RandomAccessFile(f, "r");
         fileSignature = raf.readInt();
         raf.close();

src/main/java/io/frictionlessdata/datapackage/resource/AbstractResource.java

@@ -110,7 +110,7 @@ public Iterator<C> beanIterator(Class<C> beanType, boolean relations) throws Exc
         ensureDataLoaded();
         IteratorChain<C> ic = new IteratorChain<>();
         for (Table table : tables) {
-            ic.addIterator (table.iterator(beanType, false));
+            ic.addIterator ((Iterator<? extends C>) table.iterator(beanType, false));
         }
         return ic;
     }
@@ -164,7 +164,7 @@ public List<C> getData(Class<C> beanClass)  throws Exception {
         List<C> retVal = new ArrayList<C>();
         ensureDataLoaded();
         for (Table t : tables) {
-            final BeanIterator<C> iter = t.iterator(beanClass, false);
+            final BeanIterator<C> iter = (BeanIterator<C>) t.iterator(beanClass, false);
             while (iter.hasNext()) {
                 retVal.add(iter.next());
             }