fixes for non-strictly sequential behavior in JSON fields

src/main/java/com/github/shyiko/mysql/binlog/event/deserialization/json/JsonBinary.java

@@ -189,6 +189,7 @@ public JsonBinary(byte[] bytes) {
 
     public JsonBinary(ByteArrayInputStream contents) {
         this.reader = contents;
+        this.reader.mark(Integer.MAX_VALUE);
     }
 
     public String getString() {
@@ -397,6 +398,8 @@ protected void parseObject(boolean small, JsonFormatter formatter)
                 }
             } else {
                 // Parse the value ...
+                this.reader.reset();
+                this.reader.skip(entry.index + 1);
                 parse(entry.type, formatter);
             }
         }

src/main/java/com/github/shyiko/mysql/binlog/io/ByteArrayInputStream.java

@@ -218,4 +218,18 @@ public void skipToTheEndOfTheBlock() throws IOException {
         }
     }
 
+    @Override
+    public synchronized void mark(int readlimit) {
+        inputStream.mark(readlimit);
+    }
+
+    @Override
+    public boolean markSupported() {
+        return inputStream.markSupported();
+    }
+
+    @Override
+    public synchronized void reset() throws IOException {
+        inputStream.reset();
+    }
 }