2 * Copyright (c) 2024 PANTHEON.tech, s.r.o. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.restconf.server.spi;
10 import static com.google.common.base.Verify.verify;
11 import static java.util.Objects.requireNonNull;
13 import com.google.gson.stream.JsonWriter;
14 import java.io.IOException;
15 import javax.xml.stream.XMLStreamWriter;
16 import org.eclipse.jdt.annotation.NonNullByDefault;
17 import org.opendaylight.restconf.server.api.DatabindContext;
18 import org.opendaylight.yangtools.yang.data.api.schema.LeafSetEntryNode;
19 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
20 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
21 import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactory;
22 import org.opendaylight.yangtools.yang.data.codec.gson.JSONNormalizedNodeStreamWriter;
23 import org.opendaylight.yangtools.yang.data.codec.xml.XMLStreamNormalizedNodeStreamWriter;
24 import org.opendaylight.yangtools.yang.data.codec.xml.XmlCodecFactory;
25 import org.opendaylight.yangtools.yang.model.api.stmt.DataTreeEffectiveStatement;
26 import org.opendaylight.yangtools.yang.model.api.stmt.LeafListEffectiveStatement;
27 import org.opendaylight.yangtools.yang.model.api.stmt.ListEffectiveStatement;
28 import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack.Inference;
31 * A {@link NormalizedFormattableBody} representing a data resource.
34 final class DataFormattableBody<N extends NormalizedNode> extends NormalizedFormattableBody<N> {
35 private final Inference parent;
37 DataFormattableBody(final DatabindContext databind, final Inference parent, final N data,
38 final NormalizedNodeWriterFactory writerFactory) {
39 super(databind, writerFactory, data);
40 this.parent = requireNonNull(parent);
42 // RESTCONF allows returning one list item. We need to wrap it in map node in order to serialize it properly,
43 // which is where the notion of "parent Inference" may be confusing. We mean
44 // 'inference to the parent NormalizedNode', which for *EntryNode ends up the corresponding statement
45 if (data instanceof MapEntryNode) {
46 verifyParent(parent, ListEffectiveStatement.class, data);
47 } else if (data instanceof LeafSetEntryNode) {
48 verifyParent(parent, LeafListEffectiveStatement.class, data);
52 DataFormattableBody(final DatabindContext databind, final Inference parent, final N data) {
53 this(databind, parent, data, NormalizedNodeWriterFactory.of());
56 private static void verifyParent(final Inference inference,
57 final Class<? extends DataTreeEffectiveStatement<?>> expectedStmt, final NormalizedNode data) {
58 // Let's not bother with niceties of error report -- if we trip here, the caller is doing the wrong
59 final var qname = expectedStmt.cast(inference.toSchemaInferenceStack().currentStatement()).argument();
60 verify(qname.equals(data.name().getNodeType()));
64 protected void formatToJSON(final JSONCodecFactory codecs, final N data, final JsonWriter writer)
66 writeTo(data, JSONNormalizedNodeStreamWriter.createExclusiveWriter(codecs, parent, null, writer));
70 protected void formatToXML(final XmlCodecFactory codecs, final N data, final XMLStreamWriter xmlWriter)
72 writeTo(data, XMLStreamNormalizedNodeStreamWriter.create(xmlWriter, parent));