#62564 - replace Thread.currentThread().getContextClassLoader() with getClass().getClassLoader()

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1836590 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/poifs/crypt/CryptoFunctions.java

@@ -324,7 +324,7 @@ public class CryptoFunctions {
         }
         
         try {
-            ClassLoader cl = Thread.currentThread().getContextClassLoader();
+            ClassLoader cl = CryptoFunctions.class.getClassLoader();
             String bcProviderName = "org.bouncycastle.jce.provider.BouncyCastleProvider";
             Class<Provider> clazz = (Class<Provider>)cl.loadClass(bcProviderName);
             Security.addProvider(clazz.newInstance());

src/java/org/apache/poi/poifs/crypt/EncryptionInfo.java

@@ -217,7 +217,7 @@ public class EncryptionInfo implements Cloneable {
      */
     protected static EncryptionInfoBuilder getBuilder(EncryptionMode encryptionMode)
     throws ClassNotFoundException, IllegalAccessException, InstantiationException {
-        ClassLoader cl = Thread.currentThread().getContextClassLoader();
+        ClassLoader cl = EncryptionInfo.class.getClassLoader();
         EncryptionInfoBuilder eib;
         eib = (EncryptionInfoBuilder)cl.loadClass(encryptionMode.builder).newInstance();
         return eib;

src/java/org/apache/poi/sl/draw/DrawPictureShape.java

@@ -72,7 +72,7 @@ public class DrawPictureShape extends DrawSimpleShape {
             try {
                 @SuppressWarnings("unchecked")
                 Class<? extends ImageRenderer> irc = (Class<? extends ImageRenderer>)
-                    Thread.currentThread().getContextClassLoader().loadClass(WMF_IMAGE_RENDERER);
+                        DrawPictureShape.class.getClassLoader().loadClass(WMF_IMAGE_RENDERER);
                 return irc.newInstance();
             } catch (Exception e) {
                 // WMF image renderer is not on the classpath, continuing with BitmapRenderer

src/java/org/apache/poi/sl/usermodel/SlideShowFactory.java

@@ -292,7 +292,7 @@ public class SlideShowFactory {
         P extends TextParagraph<S,P,? extends TextRun>
     > SlideShow<S,P> createSlideShow(String factoryClass, Object args[]) throws IOException, EncryptedDocumentException {
         try {
-            Class<?> clazz = Thread.currentThread().getContextClassLoader().loadClass(factoryClass);
+            Class<?> clazz = SlideShowFactory.class.getClassLoader().loadClass(factoryClass);
             Class<?> argsClz[] = new Class<?>[args.length];
             int i=0;
             for (Object o : args) {

src/java/org/apache/poi/ss/usermodel/WorkbookFactory.java

@@ -294,7 +294,7 @@ public class WorkbookFactory {
 
     private static Workbook createWorkbook(String factoryClass, Object args[]) throws IOException, EncryptedDocumentException {
         try {
-            Class<?> clazz = Thread.currentThread().getContextClassLoader().loadClass(factoryClass);
+            Class<?> clazz = WorkbookFactory.class.getClassLoader().loadClass(factoryClass);
             Class<?> argsClz[] = new Class<?>[args.length];
             int i=0;
             for (Object o : args) {

src/ooxml/testcases/org/apache/poi/ooxml/TestPOIXMLDocument.java

@@ -356,8 +356,7 @@ public final class TestPOIXMLDocument {
             }
         };
 
-        Thread thread = Thread.currentThread();
-        ClassLoader cl = thread.getContextClassLoader();
+        ClassLoader cl = getClass().getClassLoader();
         UncaughtHandler uh = new UncaughtHandler();
         
         // check schema type loading and check if we could run in an OOM

src/resources/devtools/forbidden-signatures.txt

@@ -79,8 +79,9 @@ java.net.InetAddress#getCanonicalHostName()
 
 java.net.InetSocketAddress#getHostName() @ Use getHostString() instead, which avoids a DNS lookup
 
-@defaultMessage this method needs special permission
-java.lang.Thread#getAllStackTraces()
+
+java.lang.Thread#getAllStackTraces() @ this method needs special permission
+java.lang.Thread#getContextClassLoader() @ use getClass().getClassLoader() instead of getContextClassLoader() (see https://stackoverflow.com/a/36228195/2066598)
 
 @defaultMessage Avoid unchecked warnings by using Collections#empty(List|Map|Set) methods
 java.util.Collections#EMPTY_LIST

src/scratchpad/src/org/apache/poi/hslf/model/HSLFMetroShape.java

@@ -75,7 +75,7 @@ public class HSLFMetroShape<T extends Shape<?,?>> {
         }
         
         // org.apache.poi.xslf.usermodel.XSLFMetroShape
-        ClassLoader cl = Thread.currentThread().getContextClassLoader();
+        ClassLoader cl = getClass().getClassLoader();
         try {
             Class<?> ms = cl.loadClass("org.apache.poi.xslf.usermodel.XSLFMetroShape");
             Method m = ms.getMethod("parseShape", byte[].class);