Example usage for com.google.gson.stream JsonReader nextNull

Introduction

In this page you can find the example usage for com.google.gson.stream JsonReader nextNull.

Prototype

public void nextNull() throws IOException 

Source Link

Document

Consumes the next token from the JSON stream and asserts that it is a literal null.

Usage

From source file:org.lanternpowered.server.data.persistence.json.JsonDataFormat.java

License:MIT License

@Nullable
private static Object read0(JsonReader reader) throws IOException {
    final JsonToken token = reader.peek();
    switch (token) {
    case BEGIN_OBJECT:
        return readContainer(reader);
    case BEGIN_ARRAY:
        return readArray(reader);
    case BOOLEAN:
        return reader.nextBoolean();
    case NULL:/*from w  ww.  jav a2s  . c om*/
        reader.nextNull();
        return null;
    case STRING:
        return readString(reader);
    case NUMBER:
        return readNumber(reader);
    default:
        throw new IOException("Unexpected token: " + token);
    }
}

---

From source file:org.netxms.websvc.json.adapters.DateAdapter.java

License:Open Source License

@Override
public Date read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();
        return null;
    }/*from   w w  w  .  j  av  a2  s. c o m*/

    try {
        return new Date(reader.nextLong() * 1000);
    } catch (NumberFormatException e) {
        return null;
    } catch (IllegalStateException e) {
        return null;
    }
}

---

From source file:org.netxms.websvc.json.adapters.InetAddressAdapter.java

License:Open Source License

@Override
public InetAddress read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();
        return null;
    }//ww  w .  jav a  2  s.com

    try {
        return InetAddress.getByName(reader.nextString());
    } catch (UnknownHostException e) {
        return null;
    }
}

---

From source file:org.netxms.websvc.json.adapters.MacAddressAdapter.java

License:Open Source License

@Override
public MacAddress read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();
        return null;
    }/* w  ww. j ava  2 s.  c  o m*/

    try {
        return MacAddress.parseMacAddress(reader.nextString());
    } catch (MacAddressFormatException e) {
        return null;
    }
}

---

From source file:org.onos.yangtools.yang.data.codec.gson.JsonParserStream.java

License:Open Source License

public void read(final JsonReader in, AbstractNodeDataWithSchema parent) throws IOException {
    switch (in.peek()) {
    case STRING://from  ww  w .j  a v  a  2s. c  o m
    case NUMBER:
        setValue(parent, in.nextString());
        break;
    case BOOLEAN:
        setValue(parent, Boolean.toString(in.nextBoolean()));
        break;
    case NULL:
        in.nextNull();
        setValue(parent, null);
        break;
    case BEGIN_ARRAY:
        in.beginArray();
        while (in.hasNext()) {
            if (parent instanceof LeafNodeDataWithSchema) {
                read(in, parent);
            } else {
                final AbstractNodeDataWithSchema newChild = newArrayEntry(parent);
                read(in, newChild);
            }
        }
        in.endArray();
        return;
    case BEGIN_OBJECT:
        final Set<String> namesakes = new HashSet<>();
        in.beginObject();
        /*
         * This allows parsing of incorrectly /as showcased/
         * in testconf nesting of list items - eg.
         * lists with one value are sometimes serialized
         * without wrapping array.
         *
         */
        if (isArray(parent)) {
            parent = newArrayEntry(parent);
        }
        while (in.hasNext()) {
            final String jsonElementName = in.nextName();
            final NamespaceAndName namespaceAndName = resolveNamespace(jsonElementName, parent.getSchema());
            final String localName = namespaceAndName.getName();
            addNamespace(namespaceAndName.getUri());
            if (namesakes.contains(jsonElementName)) {
                throw new JsonSyntaxException("Duplicate name " + jsonElementName + " in JSON input.");
            }
            namesakes.add(jsonElementName);
            final Deque<DataSchemaNode> childDataSchemaNodes = findSchemaNodeByNameAndNamespace(
                    parent.getSchema(), localName, getCurrentNamespace());
            if (childDataSchemaNodes.isEmpty()) {
                throw new IllegalStateException("Schema for node with name " + localName + " and namespace "
                        + getCurrentNamespace() + " doesn't exist.");
            }

            final AbstractNodeDataWithSchema newChild = ((CompositeNodeDataWithSchema) parent)
                    .addChild(childDataSchemaNodes);
            /*
             * FIXME:anyxml data shouldn't be skipped but should be loaded somehow.
             * will be able to load anyxml which conforms to YANG data using these
             * parser, for other anyxml will be harder.
             */
            if (newChild instanceof AnyXmlNodeDataWithSchema) {
                in.skipValue();
            } else {
                read(in, newChild);
            }
            removeNamespace();
        }
        in.endObject();
        return;
    case END_DOCUMENT:
    case NAME:
    case END_OBJECT:
    case END_ARRAY:
        break;
    }
}

---

From source file:org.opendaylight.controller.sal.rest.gson.JsonParser.java

License:Open Source License

public JsonElement read(JsonReader in) throws IOException {
    switch (in.peek()) {
    case STRING:/*from  ww  w .jav  a2s .c o m*/
        return new JsonPrimitive(in.nextString());
    case NUMBER:
        String number = in.nextString();
        return new JsonPrimitive(new LazilyParsedNumber(number));
    case BOOLEAN:
        return new JsonPrimitive(in.nextBoolean());
    case NULL:
        in.nextNull();
        return JsonNull.INSTANCE;
    case BEGIN_ARRAY:
        JsonArray array = new JsonArray();
        in.beginArray();
        while (in.hasNext()) {
            array.add(read(in));
        }
        in.endArray();
        return array;
    case BEGIN_OBJECT:
        JsonObject object = new JsonObject();
        in.beginObject();
        while (in.hasNext()) {
            final String childName = in.nextName();
            if (object.has(childName)) {
                throw new JsonSyntaxException("Duplicate name " + childName + " in JSON input.");
            }
            object.add(childName, read(in));
        }
        in.endObject();
        return object;
    case END_DOCUMENT:
    case NAME:
    case END_OBJECT:
    case END_ARRAY:
    default:
        throw new IllegalArgumentException();
    }
}

---

From source file:org.opendaylight.netconf.sal.rest.impl.JsonToPATCHBodyReader.java

License:Open Source License

private List<PATCHEntity> read(final JsonReader in, InstanceIdentifierContext path) throws IOException {

    boolean inEdit = false;
    boolean inValue = false;
    String operation = null;/*w w w  .  j  ava 2s  .  co  m*/
    String target = null;
    String editId = null;
    List<PATCHEntity> resultCollection = new ArrayList<>();

    while (in.hasNext()) {
        switch (in.peek()) {
        case STRING:
        case NUMBER:
            in.nextString();
            break;
        case BOOLEAN:
            Boolean.toString(in.nextBoolean());
            break;
        case NULL:
            in.nextNull();
            break;
        case BEGIN_ARRAY:
            in.beginArray();
            break;
        case BEGIN_OBJECT:
            if (inEdit && operation != null & target != null & inValue) {
                //let's do the stuff - find out target node
                //                      StringInstanceIdentifierCodec codec = new StringInstanceIdentifierCodec(path
                //                               .getSchemaContext());
                //                        if (path.getInstanceIdentifier().toString().equals("/")) {
                //                        final YangInstanceIdentifier deserialized = codec.deserialize(target);
                //                        }
                DataSchemaNode targetNode = ((DataNodeContainer) (path.getSchemaNode()))
                        .getDataChildByName(target.replace("/", ""));
                if (targetNode == null) {
                    LOG.debug("Target node {} not found in path {} ", target, path.getSchemaNode());
                    throw new RestconfDocumentedException("Error parsing input", ErrorType.PROTOCOL,
                            ErrorTag.MALFORMED_MESSAGE);
                } else {

                    final NormalizedNodeResult resultHolder = new NormalizedNodeResult();
                    final NormalizedNodeStreamWriter writer = ImmutableNormalizedNodeStreamWriter
                            .from(resultHolder);

                    //keep on parsing json from place where target points
                    final JsonParserStream jsonParser = JsonParserStream.create(writer, path.getSchemaContext(),
                            path.getSchemaNode());
                    jsonParser.parse(in);

                    final YangInstanceIdentifier targetII = path.getInstanceIdentifier()
                            .node(targetNode.getQName());
                    resultCollection
                            .add(new PATCHEntity(editId, operation, targetII, resultHolder.getResult()));
                    inValue = false;

                    operation = null;
                    target = null;
                }
                in.endObject();
            } else {
                in.beginObject();
            }
            break;
        case END_DOCUMENT:
            break;
        case NAME:
            final String name = in.nextName();

            switch (name) {
            case "edit":
                inEdit = true;
                break;
            case "operation":
                operation = in.nextString();
                break;
            case "target":
                target = in.nextString();
                break;
            case "value":
                inValue = true;
                break;
            case "patch-id":
                patchId = in.nextString();
                break;
            case "edit-id":
                editId = in.nextString();
                break;
            }
            break;
        case END_OBJECT:
            in.endObject();
            break;
        case END_ARRAY:
            in.endArray();
            break;

        default:
            break;
        }
    }

    return ImmutableList.copyOf(resultCollection);
}

---

From source file:org.opendaylight.restconf.jersey.providers.JsonToPATCHBodyReader.java

License:Open Source License

private List<PATCHEntity> read(final JsonReader in, final InstanceIdentifierContext path) throws IOException {
    final List<PATCHEntity> resultCollection = new ArrayList<>();
    final StringModuleInstanceIdentifierCodec codec = new StringModuleInstanceIdentifierCodec(
            path.getSchemaContext());/*from  www .j a  v  a2  s  . co m*/
    final JsonToPATCHBodyReader.PatchEdit edit = new JsonToPATCHBodyReader.PatchEdit();

    while (in.hasNext()) {
        switch (in.peek()) {
        case STRING:
        case NUMBER:
            in.nextString();
            break;
        case BOOLEAN:
            Boolean.toString(in.nextBoolean());
            break;
        case NULL:
            in.nextNull();
            break;
        case BEGIN_ARRAY:
            in.beginArray();
            break;
        case BEGIN_OBJECT:
            in.beginObject();
            break;
        case END_DOCUMENT:
            break;
        case NAME:
            parseByName(in.nextName(), edit, in, path, codec, resultCollection);
            break;
        case END_OBJECT:
            in.endObject();
            break;
        case END_ARRAY:
            in.endArray();
            break;

        default:
            break;
        }
    }

    return ImmutableList.copyOf(resultCollection);
}

---

From source file:org.opendaylight.yangtools.yang.data.codec.gson.JsonParserStream.java

License:Open Source License

private void traverseAnyXmlValue(final JsonReader in, final Document doc, final Element parentElement)
        throws IOException {
    switch (in.peek()) {
    case STRING://from  ww  w . j  a  v  a2  s.  com
    case NUMBER:
        Text textNode = doc.createTextNode(in.nextString());
        parentElement.appendChild(textNode);
        break;
    case BOOLEAN:
        textNode = doc.createTextNode(Boolean.toString(in.nextBoolean()));
        parentElement.appendChild(textNode);
        break;
    case NULL:
        in.nextNull();
        textNode = doc.createTextNode("null");
        parentElement.appendChild(textNode);
        break;
    case BEGIN_ARRAY:
        in.beginArray();
        while (in.hasNext()) {
            final Element childElement = doc.createElement(ANYXML_ARRAY_ELEMENT_ID);
            parentElement.appendChild(childElement);
            traverseAnyXmlValue(in, doc, childElement);
        }
        in.endArray();
        break;
    case BEGIN_OBJECT:
        in.beginObject();
        while (in.hasNext()) {
            final Element childElement = doc.createElement(in.nextName());
            parentElement.appendChild(childElement);
            traverseAnyXmlValue(in, doc, childElement);
        }
        in.endObject();
    case END_DOCUMENT:
    case NAME:
    case END_OBJECT:
    case END_ARRAY:
        break;
    }
}

---

From source file:org.opendaylight.yangtools.yang.data.codec.gson.JsonParserStream.java

License:Open Source License

public void read(final JsonReader in, AbstractNodeDataWithSchema parent) throws IOException {
    switch (in.peek()) {
    case STRING://from   w w  w . j  a  v a  2s  . c  o m
    case NUMBER:
        setValue(parent, in.nextString());
        break;
    case BOOLEAN:
        setValue(parent, Boolean.toString(in.nextBoolean()));
        break;
    case NULL:
        in.nextNull();
        setValue(parent, null);
        break;
    case BEGIN_ARRAY:
        in.beginArray();
        while (in.hasNext()) {
            if (parent instanceof LeafNodeDataWithSchema) {
                read(in, parent);
            } else {
                final AbstractNodeDataWithSchema newChild = newArrayEntry(parent);
                read(in, newChild);
            }
        }
        in.endArray();
        return;
    case BEGIN_OBJECT:
        final Set<String> namesakes = new HashSet<>();
        in.beginObject();
        /*
         * This allows parsing of incorrectly /as showcased/
         * in testconf nesting of list items - eg.
         * lists with one value are sometimes serialized
         * without wrapping array.
         *
         */
        if (isArray(parent)) {
            parent = newArrayEntry(parent);
        }
        while (in.hasNext()) {
            final String jsonElementName = in.nextName();
            DataSchemaNode parentSchema = parent.getSchema();
            if (parentSchema instanceof YangModeledAnyXmlSchemaNode) {
                parentSchema = ((YangModeledAnyXmlSchemaNode) parentSchema).getSchemaOfAnyXmlData();
            }
            final NamespaceAndName namespaceAndName = resolveNamespace(jsonElementName, parentSchema);
            final String localName = namespaceAndName.getName();
            addNamespace(namespaceAndName.getUri());
            if (namesakes.contains(jsonElementName)) {
                throw new JsonSyntaxException("Duplicate name " + jsonElementName + " in JSON input.");
            }
            namesakes.add(jsonElementName);

            final Deque<DataSchemaNode> childDataSchemaNodes = ParserStreamUtils
                    .findSchemaNodeByNameAndNamespace(parentSchema, localName, getCurrentNamespace());
            if (childDataSchemaNodes.isEmpty()) {
                throw new IllegalStateException("Schema for node with name " + localName + " and namespace "
                        + getCurrentNamespace() + " doesn't exist.");
            }

            final AbstractNodeDataWithSchema newChild = ((CompositeNodeDataWithSchema) parent)
                    .addChild(childDataSchemaNodes);
            if (newChild instanceof AnyXmlNodeDataWithSchema) {
                readAnyXmlValue(in, (AnyXmlNodeDataWithSchema) newChild, jsonElementName);
            } else {
                read(in, newChild);
            }
            removeNamespace();
        }
        in.endObject();
        return;
    case END_DOCUMENT:
    case NAME:
    case END_OBJECT:
    case END_ARRAY:
        break;
    }
}

---

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