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

List of usage examples for com.google.gson.stream JsonReader peek

  1. HOME
  2. Java
  3. com.google.gson
  4. com.google.gson.stream.*
  5. JsonReader
  6. peek

Introduction

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

Prototype

public JsonToken peek() throws IOException

Source Link

Document

Returns the type of the next token without consuming it.

Usage

From source file:org.mitre.util.JsonUtils.java

License:Apache License

public static Map readMap(JsonReader reader) throws IOException {
    Map map = new HashMap<>();
    reader.beginObject();/* w w  w.jav  a2 s . com*/
    while (reader.hasNext()) {
        String name = reader.nextName();
        Object value = null;
        switch (reader.peek()) {
        case STRING:
            value = reader.nextString();
            break;
        case BOOLEAN:
            value = reader.nextBoolean();
            break;
        case NUMBER:
            value = reader.nextLong();
            break;
        default:
            logger.debug("Found unexpected entry");
            reader.skipValue();
            continue;
        }
        map.put(name, value);
    }
    reader.endObject();
    return map;
}

From source file:org.mitre.util.JsonUtils.java

License:Apache License

public static Set readSet(JsonReader reader) throws IOException {
    Set arraySet = null;//from ww w  .j  a va2 s  .c o m
    reader.beginArray();
    switch (reader.peek()) {
    case STRING:
        arraySet = new HashSet<>();
        while (reader.hasNext()) {
            arraySet.add(reader.nextString());
        }
        break;
    case NUMBER:
        arraySet = new HashSet<>();
        while (reader.hasNext()) {
            arraySet.add(reader.nextLong());
        }
        break;
    default:
        arraySet = new HashSet();
        break;
    }
    reader.endArray();
    return arraySet;
}

From source file:org.mythdroid.services.GuideService.java

License:Open Source License

private void skipTo(JsonReader jr, JsonToken token) throws IOException {
    while (jr.hasNext() && jr.peek() != token)
        jr.skipValue();/* w  w  w .j a v  a2  s. c  o  m*/
}

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();//from w  w w . ja v  a2  s.  c  om
        return null;
    }

    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();//  www  .  j  a v a  2  s . c  o m
        return null;
    }

    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();//from   w w w. jav a  2 s .c  om
        return null;
    }

    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 JsonParserStream parse(final JsonReader reader) throws JsonIOException, JsonSyntaxException {
    // code copied from gson's JsonParser and Stream classes

    final boolean lenient = reader.isLenient();
    reader.setLenient(true);//from w w w.  j a  v a 2 s  .co  m
    boolean isEmpty = true;
    try {
        reader.peek();
        isEmpty = false;
        final CompositeNodeDataWithSchema compositeNodeDataWithSchema = new CompositeNodeDataWithSchema(
                parentNode);
        read(reader, compositeNodeDataWithSchema);
        compositeNodeDataWithSchema.write(writer);

        return this;
        // return read(reader);
    } catch (final EOFException e) {
        if (isEmpty) {
            return this;
            // return JsonNull.INSTANCE;
        }
        // The stream ended prematurely so it is likely a syntax error.
        throw new JsonSyntaxException(e);
    } catch (final MalformedJsonException e) {
        throw new JsonSyntaxException(e);
    } catch (final IOException e) {
        throw new JsonIOException(e);
    } catch (final NumberFormatException e) {
        throw new JsonSyntaxException(e);
    } catch (StackOverflowError | OutOfMemoryError e) {
        throw new JsonParseException("Failed parsing JSON source: " + reader + " to Json", e);
    } finally {
        reader.setLenient(lenient);
    }
}

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:/* w w  w  .  j  a  v  a  2s  .c om*/
    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 parse(JsonReader reader) throws JsonIOException, JsonSyntaxException {
    // code copied from gson's JsonParser and Stream classes

    boolean lenient = reader.isLenient();
    reader.setLenient(true);/*from  w w w  .ja  v a 2 s .c om*/
    boolean isEmpty = true;
    try {
        reader.peek();
        isEmpty = false;
        return read(reader);
    } catch (EOFException e) {
        if (isEmpty) {
            return JsonNull.INSTANCE;
        }
        // The stream ended prematurely so it is likely a syntax error.
        throw new JsonSyntaxException(e);
    } catch (MalformedJsonException e) {
        throw new JsonSyntaxException(e);
    } catch (IOException e) {
        throw new JsonIOException(e);
    } catch (NumberFormatException e) {
        throw new JsonSyntaxException(e);
    } catch (StackOverflowError | OutOfMemoryError e) {
        throw new JsonParseException("Failed parsing JSON source: " + reader + " to Json", e);
    } finally {
        reader.setLenient(lenient);
    }
}

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 .  co 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();
    }
}