JAL-3032 adds Java 8 functionality (1/2)

[jalview.git] / srcjar / org / apache / log4j / helpers / MDCKeySetExtractor.java

diff --git a/srcjar/org/apache/log4j/helpers/MDCKeySetExtractor.java b/srcjar/org/apache/log4j/helpers/MDCKeySetExtractor.java
deleted file mode 100644 (file)
index 2d2a539..0000000
--- a/srcjar/org/apache/log4j/helpers/MDCKeySetExtractor.java
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You 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.
- */
-package org.apache.log4j.helpers;
-
-import org.apache.log4j.spi.LoggingEvent;
-import org.apache.log4j.pattern.LogEvent;
-
-import java.lang.reflect.Method;
-import java.util.Set;
-import java.io.ByteArrayOutputStream;
-import java.io.ObjectOutputStream;
-import java.io.ByteArrayInputStream;
-import java.io.ObjectInputStream;
-
-
-public final class MDCKeySetExtractor {
-    private final Method getKeySetMethod;
-    public static final MDCKeySetExtractor INSTANCE =
-            new MDCKeySetExtractor();
-
-
-    private MDCKeySetExtractor() {
-        //
-        //  log4j 1.2.15 and later will have method to get names
-        //     of all keys in MDC
-        //
-      Method getMethod = null;
-
-        try {
-           getMethod = LoggingEvent.class.getMethod(
-                      "getPropertyKeySet", null);
-        } catch(Exception ex) {
-            getMethod = null;
-        }
-      getKeySetMethod = getMethod;
-
-    }
-
-    public Set getPropertyKeySet(final LoggingEvent event) throws Exception {
-        //
-        //  MDC keys are not visible prior to log4j 1.2.15
-        //
-        Set keySet = null;
-        if (getKeySetMethod != null) {
-              keySet = (Set) getKeySetMethod.invoke(event, null);
-        } else {
-            //
-            //  for 1.2.14 and earlier could serialize and
-            //    extract MDC content
-              ByteArrayOutputStream outBytes = new ByteArrayOutputStream();
-              ObjectOutputStream os = new ObjectOutputStream(outBytes);
-              os.writeObject(event);
-              os.close();
-
-              byte[] raw = outBytes.toByteArray();
-              //
-              //   bytes 6 and 7 should be the length of the original classname
-              //     should be the same as our substitute class name
-              final String subClassName = LogEvent.class.getName();
-              if (raw[6] == 0 || raw[7] == subClassName.length()) {
-                  //
-                  //  manipulate stream to use our class name
-                  //
-                  for (int i = 0; i < subClassName.length(); i++) {
-                      raw[8 + i] = (byte) subClassName.charAt(i);
-                  }
-                  ByteArrayInputStream inBytes = new ByteArrayInputStream(raw);
-                  ObjectInputStream is = new ObjectInputStream(inBytes);
-                  Object cracked = is.readObject();
-                  if (cracked instanceof LogEvent) {
-                      keySet = ((LogEvent) cracked).getPropertyKeySet();
-                  }
-                  is.close();
-              }
-        }
-        return keySet;        
-    }
-}