import com.google.common.annotations.Beta;
import java.io.DataInput;
import java.io.IOException;
+import java.util.Optional;
+import org.eclipse.jdt.annotation.NonNull;
+import org.opendaylight.yangtools.yang.common.QName;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
+import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter;
+import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult;
+import org.opendaylight.yangtools.yang.data.impl.schema.ReusableImmutableNormalizedNodeStreamWriter;
import org.opendaylight.yangtools.yang.model.api.SchemaPath;
/**
*/
@Beta
public interface NormalizedNodeDataInput extends DataInput {
+ /**
+ * Interpret current stream position as a NormalizedNode, stream its events into a NormalizedNodeStreamWriter.
+ *
+ * @param writer Writer to emit events to
+ * @throws IOException if an error occurs
+ * @throws IllegalStateException if the dictionary has been detached
+ * @throws NullPointerException if {@code writer} is null
+ */
+ void streamNormalizedNode(NormalizedNodeStreamWriter writer) throws IOException;
+
/**
* Read a normalized node from the reader.
*
* @throws IOException if an error occurs
* @throws IllegalStateException if the dictionary has been detached
*/
- NormalizedNode<?, ?> readNormalizedNode() throws IOException;
+ default NormalizedNode<?, ?> readNormalizedNode() throws IOException {
+ final NormalizedNodeResult result = new NormalizedNodeResult();
+ try (NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter.from(result)) {
+ streamNormalizedNode(writer);
+ }
+ return result.getResult();
+ }
+
+ /**
+ * Read a normalized node from the reader, using specified writer to construct the result.
+ *
+ * @param writer Reusable writer to
+ * @return Next node from the stream, or null if end of stream has been reached.
+ * @throws IOException if an error occurs
+ * @throws IllegalStateException if the dictionary has been detached
+ */
+ default NormalizedNode<?, ?> readNormalizedNode(final ReusableImmutableNormalizedNodeStreamWriter writer)
+ throws IOException {
+ try {
+ streamNormalizedNode(writer);
+ return writer.getResult();
+ } finally {
+ writer.reset();
+ }
+ }
YangInstanceIdentifier readYangInstanceIdentifier() throws IOException;
+ @NonNull QName readQName() throws IOException;
+
PathArgument readPathArgument() throws IOException;
SchemaPath readSchemaPath() throws IOException;
* @throws IOException if the version cannot be ascertained
*/
NormalizedNodeStreamVersion getVersion() throws IOException;
+
+ default Optional<NormalizedNode<?, ?>> readOptionalNormalizedNode() throws IOException {
+ return readBoolean() ? Optional.of(readNormalizedNode()) : Optional.empty();
+ }
}