Move streams support classes

[netconf.git] / restconf / restconf-nb-rfc8040 / src / main / java / org / opendaylight / restconf / nb / rfc8040 / streams / listeners / XmlDataTreeCandidateSerializer.java

diff --git a/restconf/restconf-nb-rfc8040/src/main/java/org/opendaylight/restconf/nb/rfc8040/streams/listeners/XmlDataTreeCandidateSerializer.java b/restconf/restconf-nb-rfc8040/src/main/java/org/opendaylight/restconf/nb/rfc8040/streams/listeners/XmlDataTreeCandidateSerializer.java
new file mode 100644 (file)
index 0000000..1b90109
--- /dev/null
+++ b/restconf/restconf-nb-rfc8040/src/main/java/org/opendaylight/restconf/nb/rfc8040/streams/listeners/XmlDataTreeCandidateSerializer.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2020 PANTHEON.tech, s.r.o. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.restconf.nb.rfc8040.streams.listeners;
+
+import static java.util.Objects.requireNonNull;
+import static org.opendaylight.restconf.nb.rfc8040.streams.listeners.XMLNotificationFormatter.DATA_CHANGE_EVENT_ELEMENT;
+
+import java.util.Collection;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamWriter;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
+import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
+import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter;
+import org.opendaylight.yangtools.yang.data.codec.xml.XMLStreamNormalizedNodeStreamWriter;
+import org.opendaylight.yangtools.yang.data.tree.api.DataTreeCandidateNode;
+import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
+import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack.Inference;
+
+final class XmlDataTreeCandidateSerializer extends AbstractWebsocketSerializer<Exception> {
+    private final XMLStreamWriter xmlWriter;
+
+    XmlDataTreeCandidateSerializer(final EffectiveModelContext context, final XMLStreamWriter xmlWriter) {
+        super(context);
+        this.xmlWriter = requireNonNull(xmlWriter);
+    }
+
+    @Override
+    void serializeData(final Inference parent, final Collection<PathArgument> nodePath,
+            final DataTreeCandidateNode candidate, final boolean skipData) throws Exception {
+        NormalizedNodeStreamWriter nodeStreamWriter = XMLStreamNormalizedNodeStreamWriter.create(xmlWriter, parent);
+        xmlWriter.writeStartElement(DATA_CHANGE_EVENT_ELEMENT);
+        serializePath(nodePath);
+
+        if (!skipData && candidate.getDataAfter().isPresent()) {
+            xmlWriter.writeStartElement("data");
+            NormalizedNodeWriter nnWriter = NormalizedNodeWriter.forStreamWriter(nodeStreamWriter);
+            nnWriter.write(candidate.getDataAfter().get());
+            nnWriter.flush();
+
+            xmlWriter.writeEndElement();
+        }
+        serializeOperation(candidate);
+
+        xmlWriter.writeEndElement();
+    }
+
+    @Override
+    public void serializePath(final Collection<PathArgument> pathArguments) throws XMLStreamException {
+        xmlWriter.writeStartElement("path");
+        xmlWriter.writeCharacters(convertPath(pathArguments));
+        xmlWriter.writeEndElement();
+    }
+
+    @Override
+    public void serializeOperation(final DataTreeCandidateNode candidate) throws XMLStreamException {
+        xmlWriter.writeStartElement("operation");
+        xmlWriter.writeCharacters(modificationTypeToOperation(candidate, candidate.getModificationType()));
+        xmlWriter.writeEndElement();
+    }
+}