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

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

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Introduction

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

Prototype

public String nextName() throws IOException

Source Link

Document

Returns the next token, a com.google.gson.stream.JsonToken#NAME property name , and consumes it.

Usage

From source file:org.apache.axis2.json.gson.rpc.JsonUtils.java

License:Apache License

public static Object invokeServiceClass(JsonReader jsonReader, Object service, Method operation,
        Class[] paramClasses, int paramCount)
        throws InvocationTargetException, IllegalAccessException, IOException {

    Object[] methodParam = new Object[paramCount];
    Gson gson = new Gson();
    String[] argNames = new String[paramCount];

    if (!jsonReader.isLenient()) {
        jsonReader.setLenient(true);/*w w  w  . j ava  2  s .com*/
    }
    jsonReader.beginObject();
    jsonReader.nextName(); // get message name from input json stream
    jsonReader.beginArray();

    int i = 0;
    for (Class paramType : paramClasses) {
        jsonReader.beginObject();
        argNames[i] = jsonReader.nextName();
        methodParam[i] = gson.fromJson(jsonReader, paramType); // gson handle all types well and return an object from it
        jsonReader.endObject();
        i++;
    }

    jsonReader.endArray();
    jsonReader.endObject();

    return operation.invoke(service, methodParam);

}

From source file:org.apache.carbondata.sdk.file.Schema.java

License:Apache License

/**
 * Create a Schema using JSON string, for example:
 * [// w w  w .jav a2s  .c  om
 *   {"name":"string"},
 *   {"age":"int"}
 * ]
 * @param json specified as string
 * @return Schema
 */
public static Schema parseJson(String json) {
    GsonBuilder gsonBuilder = new GsonBuilder();
    gsonBuilder.registerTypeAdapter(Field.class, new TypeAdapter<Field>() {
        @Override
        public void write(JsonWriter out, Field field) throws IOException {
            // noop
        }

        @Override
        public Field read(JsonReader in) throws IOException {
            in.beginObject();
            Field field = new Field(in.nextName(), in.nextString());
            in.endObject();
            return field;
        }
    });

    Field[] fields = gsonBuilder.create().fromJson(json, Field[].class);
    return new Schema(fields);
}

From source file:org.apache.hadoop.dynamodb.importformat.ImportInputFormat.java

License:Open Source License

/**
 * An example manifest file looks like/*from   www . j a va 2 s  . c  om*/
 *
 * {"name":"DynamoDB-export","version":3, "entries":[
 * {"url":"s3://path/to/object/92dd1414-a049-4c68-88fb-a23acd44907e","mandatory":true},
 * {"url":"s3://path/to/object/ba3f3535-7aa1-4f97-a530-e72938bf4b76","mandatory":true} ]}
 */
// @formatter:on
private List<InputSplit> parseManifest(FileSystem fs, Path manifestPath, JobConf job) throws IOException {
    List<InputSplit> splits = null;

    FSDataInputStream fp = fs.open(manifestPath);
    JsonReader reader = new JsonReader(new InputStreamReader(fp, Charsets.UTF_8));

    reader.beginObject();
    while (reader.hasNext()) {
        String name = reader.nextName();
        switch (name) {
        case VERSION_JSON_KEY:
            job.set(DynamoDBConstants.EXPORT_FORMAT_VERSION, String.valueOf(reader.nextInt()));
            break;
        case ENTRIES_JSON_KEY:
            splits = readEntries(reader, job);
            break;
        default:
            log.info("Skipping a JSON key in the manifest file: " + name);
            reader.skipValue();
            break;
        }
    }
    reader.endObject();

    if (splits == null) {
        return Collections.emptyList();
    }
    return splits;
}

From source file:org.apache.hadoop.fs.http.client.ContentSummary.java

License:Apache License

public static TypeAdapter adapter() {
    return new TypeAdapter<ContentSummary>() {
        @Override/*  w ww  .j av  a2s  .c o  m*/
        public void write(JsonWriter out, ContentSummary value) throws IOException {
            /* not implemented */
        }

        @Override
        public ContentSummary read(JsonReader in) throws IOException {
            ContentSummary instance = null;
            in.setLenient(true);

            if (in.peek() == JsonToken.BEGIN_OBJECT) {
                in.beginObject();

                if (in.nextName().equalsIgnoreCase("ContentSummary")) {
                    String name;
                    in.beginObject();
                    instance = new ContentSummary();

                    while (in.hasNext()) {
                        name = in.nextName();

                        if (name.equalsIgnoreCase("directoryCount")) {
                            instance.directoryCount = in.nextInt();
                        } else if (name.equalsIgnoreCase("fileCount")) {
                            instance.fileCount = in.nextInt();
                        } else if (name.equalsIgnoreCase("length")) {
                            instance.length = in.nextInt();
                        } else if (name.equalsIgnoreCase("quota")) {
                            instance.quota = in.nextInt();
                        } else if (name.equalsIgnoreCase("spaceConsumed")) {
                            instance.spaceConsumed = in.nextInt();
                        } else if (name.equalsIgnoreCase("spaceQuota")) {
                            instance.spaceQuota = in.nextInt();
                        }
                    }

                    in.endObject();
                }

                in.endObject();
            }
            return instance;
        }
    };
}

From source file:org.apache.hadoop.fs.http.client.FileStatus.java

License:Apache License

public static TypeAdapter adapter() {
    return new TypeAdapter<FileStatus>() {
        @Override// ww w .j av a 2 s.c o  m
        public void write(JsonWriter out, FileStatus value) throws IOException {
            /* not implemented */
        }

        @Override
        public FileStatus read(JsonReader in) throws IOException {
            FileStatus instance = null;
            in.setLenient(true);

            if (in.peek() == JsonToken.BEGIN_OBJECT) {
                in.beginObject();

                if (in.nextName().equalsIgnoreCase("FileStatus")) {
                    String name;
                    in.beginObject();
                    instance = new FileStatus();

                    while (in.hasNext()) {
                        name = in.nextName();

                        if (name.equalsIgnoreCase("accessTime")) {
                            instance.accessTime = in.nextLong();
                        } else if (name.equalsIgnoreCase("blockSize")) {
                            instance.blockSize = in.nextInt();
                        } else if (name.equalsIgnoreCase("length")) {
                            instance.length = in.nextLong();
                        } else if (name.equalsIgnoreCase("modificationTime")) {
                            instance.modTime = in.nextLong();
                        } else if (name.equalsIgnoreCase("replication")) {
                            instance.replication = in.nextInt();
                        } else if (name.equalsIgnoreCase("group")) {
                            instance.group = in.nextString();
                        } else if (name.equalsIgnoreCase("owner")) {
                            instance.owner = in.nextString();
                        } else if (name.equalsIgnoreCase("pathSuffix")) {
                            instance.suffix = in.nextString();
                        } else if (name.equalsIgnoreCase("permission")) {
                            instance.permission = in.nextString();
                        } else if (name.equalsIgnoreCase("type")) {
                            instance.type = FileType.valueOf(in.nextString());
                        }
                    }

                    in.endObject();
                }

                in.endObject();
            }
            return instance;
        }
    };
}

From source file:org.apache.olingo.odata2.core.ep.consumer.JsonErrorDocumentConsumer.java

License:Apache License

private ODataErrorContext parseJson(final JsonReader reader) throws IOException, EntityProviderException {
    ODataErrorContext errorContext;/*from   w  ww  .ja  v  a  2  s. c  om*/

    if (reader.hasNext()) {
        reader.beginObject();
        String currentName = reader.nextName();
        if (FormatJson.ERROR.equals(currentName)) {
            errorContext = parseError(reader);
        } else {
            throw new EntityProviderException(EntityProviderException.INVALID_STATE
                    .addContent("Invalid object with name '" + currentName + "' found."));
        }
    } else {
        throw new EntityProviderException(
                EntityProviderException.INVALID_STATE.addContent("No content to parse found."));
    }

    errorContext.setContentType(ContentType.APPLICATION_JSON.toContentTypeString());
    return errorContext;
}

From source file:org.apache.olingo.odata2.core.ep.consumer.JsonErrorDocumentConsumer.java

License:Apache License

private ODataErrorContext parseError(final JsonReader reader) throws IOException, EntityProviderException {
    ODataErrorContext errorContext = new ODataErrorContext();
    String currentName;/*from   w ww  .jav a  2s.c  om*/
    reader.beginObject();
    boolean messageFound = false;
    boolean codeFound = false;

    while (reader.hasNext()) {
        currentName = reader.nextName();
        if (FormatJson.CODE.equals(currentName)) {
            codeFound = true;
            errorContext.setErrorCode(getValue(reader));
        } else if (FormatJson.MESSAGE.equals(currentName)) {
            messageFound = true;
            parseMessage(reader, errorContext);
        } else if (FormatJson.INNER_ERROR.equals(currentName)) {
            parseInnerError(reader, errorContext);
        } else {
            throw new EntityProviderException(EntityProviderException.INVALID_STATE
                    .addContent("Invalid name '" + currentName + "' found."));
        }
    }

    if (!codeFound) {
        throw new EntityProviderException(
                EntityProviderException.MISSING_PROPERTY.addContent("Mandatory 'code' property not found.'"));
    }
    if (!messageFound) {
        throw new EntityProviderException(EntityProviderException.MISSING_PROPERTY
                .addContent("Mandatory 'message' property not found.'"));
    }

    reader.endObject();
    return errorContext;
}

From source file:org.apache.olingo.odata2.core.ep.consumer.JsonErrorDocumentConsumer.java

License:Apache License

private String readJson(final JsonReader reader) throws IOException {
    StringBuilder sb = new StringBuilder();

    while (reader.hasNext()) {
        JsonToken token = reader.peek();
        if (token == JsonToken.NAME) {
            if (sb.length() > 0) {
                sb.append(",");
            }/*from w  w  w .  ja  v a2s  . c  om*/
            String name = reader.nextName();
            sb.append("\"").append(name).append("\"").append(":");
        } else if (token == JsonToken.BEGIN_OBJECT) {
            reader.beginObject();
            sb.append("{").append(readJson(reader)).append("}");
            reader.endObject();
        } else if (token == JsonToken.BEGIN_ARRAY) {
            reader.beginArray();
            sb.append("[").append(readJson(reader)).append("]");
            reader.endArray();
        } else {
            sb.append("\"").append(reader.nextString()).append("\"");
        }
    }

    return sb.toString();
}

From source file:org.apache.olingo.odata2.core.ep.consumer.JsonErrorDocumentConsumer.java

License:Apache License

private void parseMessage(final JsonReader reader, final ODataErrorContext errorContext)
        throws IOException, EntityProviderException {

    reader.beginObject();//from  www . j a va  2s. co  m
    boolean valueFound = false;
    boolean langFound = false;
    String currentName;

    while (reader.hasNext()) {
        currentName = reader.nextName();
        if (FormatJson.LANG.equals(currentName)) {
            langFound = true;
            String langValue = getValue(reader);
            if (langValue != null) {
                errorContext.setLocale(getLocale(langValue));
            }
        } else if (FormatJson.VALUE.equals(currentName)) {
            valueFound = true;
            errorContext.setMessage(getValue(reader));
        } else {
            throw new EntityProviderException(EntityProviderException.INVALID_STATE
                    .addContent("Invalid name '" + currentName + "' found."));
        }
    }

    if (!langFound) {
        throw new EntityProviderException(
                EntityProviderException.MISSING_PROPERTY.addContent("Mandatory 'lang' property not found.'"));
    }
    if (!valueFound) {
        throw new EntityProviderException(
                EntityProviderException.MISSING_PROPERTY.addContent("Mandatory 'value' property not found.'"));
    }
    reader.endObject();
}

From source file:org.apache.olingo.odata2.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 {/*w w w. jav a  2s  .  co m*/
        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, readProperties, result, nextName);
            reader.endObject();
        } else {
            handleName(reader, typeMappings, entityPropertyInfo, readProperties, 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);
    }
}