Do not write empty string in EmptyXmlCodec

Emitting an empty string does nothing but churn writer state,
so speed up EmptyXmlCodec by not touching the writer.

Change-Id: Iab7db37089b84ec1a3c2e3c9381265025e21fdca
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>

diff --git a/yang/yang-data-codec-xml/src/main/java/org/opendaylight/yangtools/yang/data/codec/xml/EmptyXmlCodec.java b/yang/yang-data-codec-xml/src/main/java/org/opendaylight/yangtools/yang/data/codec/xml/EmptyXmlCodec.java
index f6bbdd0bd0ef12ea9bbed3417112938fd0a7fed9..b598c80af87499eb4cd304d2c67b29d5f5a6576b 100644 (file)
--- a/yang/yang-data-codec-xml/src/main/java/org/opendaylight/yangtools/yang/data/codec/xml/EmptyXmlCodec.java
+++ b/yang/yang-data-codec-xml/src/main/java/org/opendaylight/yangtools/yang/data/codec/xml/EmptyXmlCodec.java
@@ -35,6 +35,5 @@ final class EmptyXmlCodec implements XmlCodec<Empty> {
     @Override
     public void writeValue(final XMLStreamWriter ctx, final Empty value) throws XMLStreamException {
         requireNonNull(value);
-        ctx.writeCharacters("");
     }
 }