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

Introduction

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

Prototype

public void beginObject() throws IOException 

Source Link

Document

Consumes the next token from the JSON stream and asserts that it is the beginning of a new object.

Usage

From source file:com.replaymod.replaystudio.pathing.serialize.TimelineSerialization.java

License:MIT License

public Map<String, Timeline> deserialize(String serialized) throws IOException {
    JsonReader reader = new JsonReader(new StringReader(serialized));
    Map<String, Timeline> timelines = new LinkedHashMap<>();
    reader.beginObject();
    while (reader.hasNext()) {
        Timeline timeline = registry.createTimeline();
        timelines.put(reader.nextName(), timeline);
        reader.beginArray();// ww  w  .  j av a 2s . c o  m
        while (reader.hasNext()) {
            Path path = timeline.createPath();
            reader.beginObject();
            List<Integer> segments = new ArrayList<>();
            List<Interpolator> interpolators = new ArrayList<>();
            while (reader.hasNext()) {
                switch (reader.nextName()) {
                case "keyframes":
                    reader.beginArray();
                    while (reader.hasNext()) {
                        long time = 0;
                        Map<Property, Object> properties = new HashMap<>();
                        reader.beginObject();
                        while (reader.hasNext()) {
                            switch (reader.nextName()) {
                            case "time":
                                time = reader.nextLong();
                                break;
                            case "properties":
                                reader.beginObject();
                                while (reader.hasNext()) {
                                    String id = reader.nextName();
                                    Property property = timeline.getProperty(id);
                                    if (property == null) {
                                        throw new IOException("Unknown property: " + id);
                                    }
                                    Object value = property.fromJson(reader);
                                    properties.put(property, value);
                                }
                                reader.endObject();
                                break;
                            }
                        }
                        reader.endObject();
                        Keyframe keyframe = path.insert(time);
                        for (Map.Entry<Property, Object> entry : properties.entrySet()) {
                            keyframe.setValue(entry.getKey(), entry.getValue());
                        }
                    }
                    reader.endArray();
                    break;
                case "segments":
                    reader.beginArray();
                    while (reader.hasNext()) {
                        if (reader.peek() == JsonToken.NULL) {
                            reader.nextNull();
                            segments.add(null);
                        } else {
                            segments.add(reader.nextInt());
                        }
                    }
                    reader.endArray();
                    break;
                case "interpolators":
                    reader.beginArray();
                    while (reader.hasNext()) {
                        reader.beginObject();
                        Interpolator interpolator = null;
                        Set<String> properties = new HashSet<>();
                        while (reader.hasNext()) {
                            switch (reader.nextName()) {
                            case "type":
                                interpolator = registry.deserializeInterpolator(reader);
                                break;
                            case "properties":
                                reader.beginArray();
                                while (reader.hasNext()) {
                                    properties.add(reader.nextString());
                                }
                                reader.endArray();
                                break;
                            }
                        }
                        if (interpolator == null) {
                            throw new IOException("Missing interpolator type");
                        }
                        for (String propertyName : properties) {
                            Property property = timeline.getProperty(propertyName);
                            if (property == null) {
                                throw new IOException("Timeline does not know property '" + propertyName + "'");
                            }
                            interpolator.registerProperty(property);
                        }
                        interpolators.add(interpolator);
                        reader.endObject();
                    }
                    reader.endArray();
                    break;
                }
            }
            Iterator<Integer> iter = segments.iterator();
            for (PathSegment segment : path.getSegments()) {
                Integer next = iter.next();
                if (next != null) {
                    segment.setInterpolator(interpolators.get(next));
                }
            }
            reader.endObject();
        }
        reader.endArray();
    }
    reader.endObject();
    return timelines;
}

---

From source file:com.sap.core.odata.core.ep.consumer.JsonLinkConsumer.java

License:Apache License

/**
 * Reads single link with format <code>{"d":{"uri":"http://somelink"}}</code>
 * or <code>{"uri":"http://somelink"}</code>.
 * @param reader//from www. j  a va2 s  . c  o m
 * @param entitySet
 * @return link as string object
 * @throws EntityProviderException
 */
public String readLink(final JsonReader reader, final EdmEntitySet entitySet) throws EntityProviderException {
    try {
        String result;
        reader.beginObject();
        String nextName = reader.nextName();
        final boolean wrapped = FormatJson.D.equals(nextName);
        if (wrapped) {
            reader.beginObject();
            nextName = reader.nextName();
        }
        if (FormatJson.URI.equals(nextName) && reader.peek() == JsonToken.STRING) {
            result = reader.nextString();
        } else {
            throw new EntityProviderException(EntityProviderException.INVALID_CONTENT
                    .addContent(FormatJson.D + " or " + FormatJson.URI).addContent(nextName));
        }
        reader.endObject();
        if (wrapped) {
            reader.endObject();
        }

        reader.peek(); // to assert end of structure or document

        return result;
    } catch (final IOException e) {
        throw new EntityProviderException(
                EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass().getSimpleName()), e);
    } catch (final IllegalStateException e) {
        throw new EntityProviderException(
                EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass().getSimpleName()), e);
    }
}

---

From source file:com.sap.core.odata.core.ep.consumer.JsonLinkConsumer.java

License:Apache License

/**
 * Reads a collection of links, optionally wrapped in a "d" object,
 * and optionally wrapped in an "results" object, where an additional "__count"
 * object could appear on the same level as the "results".
 * @param reader/*w  ww. j  av  a2s  . com*/
 * @param entitySet
 * @return links as List of Strings
 * @throws EntityProviderException
 */
public List<String> readLinks(final JsonReader reader, final EdmEntitySet entitySet)
        throws EntityProviderException {
    List<String> links = null;
    int openedObjects = 0;

    try {
        String nextName;
        if (reader.peek() == JsonToken.BEGIN_ARRAY) {
            nextName = FormatJson.RESULTS;
        } else {
            reader.beginObject();
            openedObjects++;
            nextName = reader.nextName();
        }
        if (FormatJson.D.equals(nextName)) {
            if (reader.peek() == JsonToken.BEGIN_ARRAY) {
                nextName = FormatJson.RESULTS;
            } else {
                reader.beginObject();
                openedObjects++;
                nextName = reader.nextName();
            }
        }
        FeedMetadataImpl feedMetadata = new FeedMetadataImpl();
        if (FormatJson.COUNT.equals(nextName)) {
            JsonFeedConsumer.readInlineCount(reader, feedMetadata);
            nextName = reader.nextName();
        }
        if (FormatJson.RESULTS.equals(nextName)) {
            links = readLinksArray(reader);
        } else {
            throw new EntityProviderException(EntityProviderException.INVALID_CONTENT
                    .addContent(FormatJson.RESULTS).addContent(nextName));
        }
        if (reader.hasNext() && reader.peek() == JsonToken.NAME) {
            if (FormatJson.COUNT.equals(reader.nextName())) {
                JsonFeedConsumer.readInlineCount(reader, feedMetadata);
            } else {
                throw new EntityProviderException(EntityProviderException.INVALID_CONTENT
                        .addContent(FormatJson.COUNT).addContent(nextName));
            }
        }
        for (; openedObjects > 0; openedObjects--) {
            reader.endObject();
        }

        reader.peek(); // to assert end of document
    } catch (final IOException e) {
        throw new EntityProviderException(
                EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass().getSimpleName()), e);
    } catch (final IllegalStateException e) {
        throw new EntityProviderException(
                EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass().getSimpleName()), e);
    }

    return links;
}

---

From source file:com.sap.core.odata.core.ep.consumer.JsonLinkConsumer.java

License:Apache License

private List<String> readLinksArray(final JsonReader reader) throws IOException, EntityProviderException {
    List<String> links = new ArrayList<String>();

    reader.beginArray();//w w  w.j  a  v  a 2s.  c  o  m
    while (reader.hasNext()) {
        reader.beginObject();
        String nextName = reader.nextName();
        if (FormatJson.URI.equals(nextName) && reader.peek() == JsonToken.STRING) {
            links.add(reader.nextString());
        } else {
            throw new EntityProviderException(
                    EntityProviderException.INVALID_CONTENT.addContent(FormatJson.URI).addContent(nextName));
        }
        reader.endObject();
    }
    reader.endArray();

    return links;
}

---

From source file:com.sap.core.odata.core.ep.consumer.JsonPropertyConsumer.java

License:Apache License

public Map<String, Object> readPropertyStandalone(final JsonReader reader, final EdmProperty property,
        final EntityProviderReadProperties readProperties) throws EntityProviderException {
    try {/*from w w  w  . j  a  v a2 s  .  c  om*/
        EntityPropertyInfo entityPropertyInfo = EntityInfoAggregator.create(property);
        Map<String, Object> typeMappings = readProperties == null ? null : readProperties.getTypeMappings();
        Map<String, Object> result = new HashMap<String, Object>();

        reader.beginObject();
        String nextName = reader.nextName();
        if (FormatJson.D.equals(nextName)) {
            reader.beginObject();
            nextName = reader.nextName();
            handleName(reader, typeMappings, entityPropertyInfo, result, nextName);
            reader.endObject();
        } else {
            handleName(reader, typeMappings, entityPropertyInfo, result, nextName);
        }
        reader.endObject();

        if (reader.peek() != JsonToken.END_DOCUMENT) {
            throw new EntityProviderException(
                    EntityProviderException.END_DOCUMENT_EXPECTED.addContent(reader.peek().toString()));
        }

        return result;
    } catch (final IOException e) {
        throw new EntityProviderException(
                EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass().getSimpleName()), e);
    } catch (final IllegalStateException e) {
        throw new EntityProviderException(
                EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass().getSimpleName()), e);
    }
}

---

From source file:com.sap.core.odata.core.ep.consumer.JsonPropertyConsumer.java

License:Apache License

@SuppressWarnings("unchecked")
private Object readComplexProperty(final JsonReader reader, final EntityComplexPropertyInfo complexPropertyInfo,
        final Object typeMapping) throws EdmException, EntityProviderException, IOException {
    if (reader.peek().equals(JsonToken.NULL)) {
        reader.nextNull();//from   w w  w  . ja va  2  s.  co m
        if (complexPropertyInfo.isMandatory()) {
            throw new EntityProviderException(
                    EntityProviderException.INVALID_PROPERTY_VALUE.addContent(complexPropertyInfo.getName()));
        }
        return null;
    }

    reader.beginObject();
    Map<String, Object> data = new HashMap<String, Object>();

    Map<String, Object> mapping;
    if (typeMapping != null) {
        if (typeMapping instanceof Map) {
            mapping = (Map<String, Object>) typeMapping;
        } else {
            throw new EntityProviderException(
                    EntityProviderException.INVALID_MAPPING.addContent(complexPropertyInfo.getName()));
        }
    } else {
        mapping = new HashMap<String, Object>();
    }

    while (reader.hasNext()) {
        String childName = reader.nextName();
        if (FormatJson.METADATA.equals(childName)) {
            reader.beginObject();
            childName = reader.nextName();
            if (!FormatJson.TYPE.equals(childName)) {
                throw new EntityProviderException(EntityProviderException.MISSING_ATTRIBUTE
                        .addContent(FormatJson.TYPE).addContent(FormatJson.METADATA));
            }
            String actualTypeName = reader.nextString();
            String expectedTypeName = complexPropertyInfo.getType().getNamespace() + Edm.DELIMITER
                    + complexPropertyInfo.getType().getName();
            if (!expectedTypeName.equals(actualTypeName)) {
                throw new EntityProviderException(EntityProviderException.INVALID_ENTITYTYPE
                        .addContent(expectedTypeName).addContent(actualTypeName));
            }
            reader.endObject();
        } else {
            EntityPropertyInfo childPropertyInfo = complexPropertyInfo.getPropertyInfo(childName);
            if (childPropertyInfo == null) {
                throw new EntityProviderException(
                        EntityProviderException.INVALID_PROPERTY.addContent(childName));
            }
            Object childData = readPropertyValue(reader, childPropertyInfo, mapping.get(childName));
            if (data.containsKey(childName)) {
                throw new EntityProviderException(
                        EntityProviderException.DOUBLE_PROPERTY.addContent(childName));
            }
            data.put(childName, childData);
        }
    }
    reader.endObject();
    return data;
}

---

From source file:com.sap.core.odata.core.ep.consumer.JsonServiceDocumentConsumer.java

License:Apache License

private ServiceDocumentImpl readServiceDocument(final JsonReader reader) throws EntityProviderException {
    try {/* w  w w . j a  v a2s. c  o  m*/
        reader.beginObject();
        currentHandledObjectName = reader.nextName();
        if (FormatJson.D.equals(currentHandledObjectName)) {
            reader.beginObject();
            readContent(reader);
            reader.endObject();
        }
        reader.endObject();
        reader.peek();
        reader.close();
    } catch (final IOException e) {
        throw new EntityProviderException(
                EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass().getSimpleName()), e);
    } catch (final IllegalStateException e) {
        throw new EntityProviderException(
                EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass().getSimpleName()), e);
    } catch (final EdmException e) {
        throw new EntityProviderException(
                EntityProviderException.EXCEPTION_OCCURRED.addContent(e.getClass().getSimpleName()), e);
    }
    return new ServiceDocumentImpl().setEntitySetsInfo(entitySets);
}

---

From source file:com.sap.core.odata.core.ep.util.JsonUtils.java

License:Apache License

public static int startJson(final JsonReader reader) throws EntityProviderException {
    //The enclosing "d" and "results" are optional - so we cannot check for the presence
    //but we have to read over them in case they are present.
    JsonToken token;//from   w  w w. j  a v  a  2s  .c  o m
    try {
        token = reader.peek();
        int openJsonObjects = 0;
        if (JsonToken.BEGIN_OBJECT == token) {
            reader.beginObject();
            openJsonObjects++;
            token = reader.peek();
            if (JsonToken.NAME == token) {
                String name = reader.nextName();
                if (!("d".equals(name) ^ "results".equals(name))) {
                    //TODO I18N
                    throw new EntityProviderException(EntityProviderException.COMMON,
                            name + " not expected, only d or results");
                }
            }

            token = reader.peek();
            if (JsonToken.BEGIN_OBJECT == token) {
                reader.beginObject();
                openJsonObjects++;
            } else if (JsonToken.BEGIN_ARRAY == token) {
                //TODO I18N
                throw new EntityProviderException(EntityProviderException.COMMON, "Array not expected");
            }
        }

        return openJsonObjects;
    } catch (IOException e) {
        //TODO I18N
        throw new EntityProviderException(EntityProviderException.COMMON, e);
    }
}

---

From source file:com.seleritycorp.common.base.coreservices.RawCoreServiceClient.java

License:Apache License

private void pushToWriter(JsonReader reader, JsonWriter writer) throws IOException {
    int count = 0;
    boolean isObject = reader.peek() == JsonToken.BEGIN_OBJECT;
    do {/*from w w w.j  av a2s  . co m*/
        JsonToken jsToken = reader.peek();
        switch (jsToken) {
        case BEGIN_ARRAY:
            reader.beginArray();
            writer.beginArray();
            if (!isObject) {
                count++;
            }
            break;
        case END_ARRAY:
            reader.endArray();
            writer.endArray();
            if (!isObject) {
                count--;
            }
            break;
        case BEGIN_OBJECT:
            reader.beginObject();
            writer.beginObject();
            if (isObject) {
                count++;
            }
            break;
        case END_OBJECT:
            reader.endObject();
            writer.endObject();
            if (isObject) {
                count--;
            }
            break;
        case NAME:
            String name = reader.nextName();
            writer.name(name);
            break;
        case STRING:
            String stringValue = reader.nextString();
            writer.value(stringValue);
            break;
        case NUMBER:
            String numValue = reader.nextString();
            writer.value(new BigDecimal(numValue));
            break;
        case BOOLEAN:
            boolean boolValue = reader.nextBoolean();
            writer.value(boolValue);
            break;
        case NULL:
            reader.nextNull();
            writer.nullValue();
            break;
        case END_DOCUMENT:
            return;
        default:
            return;
        }
    } while (count != 0);
}

---

From source file:com.solidfire.jsvcgen.serialization.ApiServerExceptionTypeAdapter.java

License:Open Source License

/**
 * {@inheritDoc}/* w w w .  j  a  v  a 2 s .co m*/
 */
@Override
public ApiServerException read(JsonReader in) throws IOException {

    String name = null;
    String code = null;
    String message = null;

    in.beginObject();
    while (in.hasNext()) {
        if (in.peek() != JsonToken.NAME) {
            in.skipValue();
            continue;
        }

        switch (in.nextName()) {
        case "name":
            name = in.nextString();
            break;
        case "code":
            code = in.nextString();
            break;
        case "message":
            message = in.nextString();
            break;
        }
    }
    in.endObject();

    return new ApiServerException(name, code, message);
}

---

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