fixup on streaming handle for Jackson parser #1250

Author: ehennum

marklogic-client-api/src/main/java/com/marklogic/client/impl/JacksonBaseHandle.java

@@ -67,7 +67,10 @@ public void fromBuffer(byte[] buffer) {
       receiveContent(new ByteArrayInputStream(buffer));
   }
   public byte[] toBuffer() {
-    return contentToBytes(get());
+    byte[] b = contentToBytes(get());
+    if (!isResendable())
+      fromBuffer(b);
+    return b;
   }
   public T bytesToContent(byte[] buffer) {
     return toContent(new ByteArrayInputStream(buffer));

marklogic-client-api/src/main/java/com/marklogic/client/io/JacksonParserHandle.java

@@ -183,8 +183,12 @@ protected OutputStreamSender sendContent() {
   }
   @Override
   protected OutputStreamSender sendContent(JsonParser parser) {
-    if (parser == null) return null;
-    return new OutputStreamSenderImpl(getMapper(), parser);
+    try {
+      if (parser == null || parser.nextToken() == null) return null;
+      return new OutputStreamSenderImpl(getMapper(), parser);
+    } catch (IOException e) {
+      throw new MarkLogicIOException("Failed to parse content", e);
+    }
   }
 
   @Override