+/*
+ * Copyright (c) 2014 Cisco Systems, Inc. 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.controller.sal.rest.impl;
import static com.google.common.base.Preconditions.checkArgument;
+import java.io.BufferedInputStream;
+import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.util.Stack;
import org.opendaylight.controller.sal.restconf.impl.CompositeNodeWrapper;
import org.opendaylight.controller.sal.restconf.impl.EmptyNodeWrapper;
+import org.opendaylight.controller.sal.restconf.impl.IdentityValuesDTO;
import org.opendaylight.controller.sal.restconf.impl.NodeWrapper;
import org.opendaylight.controller.sal.restconf.impl.SimpleNodeWrapper;
import org.opendaylight.yangtools.yang.data.api.Node;
private final static XMLInputFactory xmlInputFactory = XMLInputFactory.newInstance();
private XMLEventReader eventReader;
- public CompositeNodeWrapper read(InputStream entityStream) throws XMLStreamException, UnsupportedFormatException {
+ public CompositeNodeWrapper read(InputStream entityStream) throws XMLStreamException,
+ UnsupportedFormatException,
+ IOException {
+ //Get an XML stream which can be marked, and reset, so we can check and see if there is
+ //any content being provided.
+ entityStream = getMarkableStream(entityStream);
+
+ if( isInputStreamEmpty( entityStream ) ) {
+ return null;
+ }
+
eventReader = xmlInputFactory.createXMLEventReader(entityStream);
if (eventReader.hasNext()) {
return root;
}
+ /**
+ * If the input stream is not markable, then it wraps the input stream with a buffered stream,
+ * which is mark able. That way we can check if the stream is empty safely.
+ * @param entityStream
+ * @return
+ */
+ private InputStream getMarkableStream(InputStream entityStream) {
+ if( !entityStream.markSupported() )
+ {
+ entityStream = new BufferedInputStream( entityStream );
+ }
+ return entityStream;
+ }
+
+ private boolean isInputStreamEmpty(InputStream entityStream)
+ throws IOException {
+ boolean isEmpty = false;
+ entityStream.mark( 1 );
+ if( entityStream.read() == -1 ){
+ isEmpty = true;
+ }
+ entityStream.reset();
+ return isEmpty;
+ }
+
private boolean isSimpleNodeEvent(final XMLEvent event) throws XMLStreamException {
checkArgument(event != null, "XML Event cannot be NULL!");
if (event.isStartElement()) {
return false;
}
+ private CompositeNodeWrapper resolveCompositeNodeFromStartElement(final StartElement startElement) {
+ checkArgument(startElement != null, "Start Element cannot be NULL!");
+ return new CompositeNodeWrapper(getNamespaceFor(startElement), getLocalNameFor(startElement));
+ }
+
private NodeWrapper<? extends Node<?>> resolveSimpleNodeFromStartElement(final StartElement startElement)
throws XMLStreamException {
checkArgument(startElement != null, "Start Element cannot be NULL!");
- String data = null;
+ String data = getValueOf(startElement);
+ if (data == null) {
+ return new EmptyNodeWrapper(getNamespaceFor(startElement), getLocalNameFor(startElement));
+ }
+ return new SimpleNodeWrapper(getNamespaceFor(startElement), getLocalNameFor(startElement),
+ resolveValueOfElement(data, startElement));
+ }
+ private String getValueOf(StartElement startElement) throws XMLStreamException {
+ String data = null;
if (eventReader.hasNext()) {
final XMLEvent innerEvent = eventReader.peek();
if (innerEvent.isCharacters()) {
final Characters chars = innerEvent.asCharacters();
if (!chars.isWhiteSpace()) {
data = innerEvent.asCharacters().getData();
+ data = data + getAdditionalData(eventReader.nextEvent());
}
} else if (innerEvent.isEndElement()) {
if (startElement.getLocation().getCharacterOffset() == innerEvent.getLocation().getCharacterOffset()) {
}
}
}
- if(data == null) {
- return new EmptyNodeWrapper(getNamespaceFrom(startElement), getLocalNameFrom(startElement));
- }
- return new SimpleNodeWrapper(getNamespaceFrom(startElement), getLocalNameFrom(startElement), data);
+ return data == null ? null : data.trim();
}
- private CompositeNodeWrapper resolveCompositeNodeFromStartElement(final StartElement startElement) {
- checkArgument(startElement != null, "Start Element cannot be NULL!");
- return new CompositeNodeWrapper(getNamespaceFrom(startElement), getLocalNameFrom(startElement));
+ private String getAdditionalData(XMLEvent event) throws XMLStreamException {
+ String data = "";
+ if (eventReader.hasNext()) {
+ final XMLEvent innerEvent = eventReader.peek();
+ if (innerEvent.isCharacters() && !innerEvent.isEndElement()) {
+ final Characters chars = innerEvent.asCharacters();
+ if (!chars.isWhiteSpace()) {
+ data = innerEvent.asCharacters().getData();
+ data = data + getAdditionalData(eventReader.nextEvent());
+ }
+ }
+ }
+ return data;
}
- private String getLocalNameFrom(StartElement startElement) {
+ private String getLocalNameFor(StartElement startElement) {
return startElement.getName().getLocalPart();
}
- private URI getNamespaceFrom(StartElement startElement) {
+ private URI getNamespaceFor(StartElement startElement) {
String namespaceURI = startElement.getName().getNamespaceURI();
return namespaceURI.isEmpty() ? null : URI.create(namespaceURI);
}
+ private Object resolveValueOfElement(String value, StartElement startElement) {
+ // it could be instance-identifier Built-In Type
+ if (value.startsWith("/")) {
+ IdentityValuesDTO iiValue = RestUtil.asInstanceIdentifier(value, new RestUtil.PrefixMapingFromXml(startElement));
+ if (iiValue != null) {
+ return iiValue;
+ }
+ }
+ // it could be identityref Built-In Type
+ String[] namespaceAndValue = value.split(":");
+ if (namespaceAndValue.length == 2) {
+ String namespace = startElement.getNamespaceContext().getNamespaceURI(namespaceAndValue[0]);
+ if (namespace != null && !namespace.isEmpty()) {
+ return new IdentityValuesDTO(namespace, namespaceAndValue[1], namespaceAndValue[0],value);
+ }
+ }
+ // it is not "prefix:value" but just "value"
+ return value;
+ }
+
}
Code Review / controller.git / blobdiff