Examples with JacksonDataCodec com.linkedin.data.codec.JacksonDataCodec used on opensource projects

Example 26 with JacksonDataCodec

use of com.linkedin.data.codec.JacksonDataCodec in project rest.li by linkedin.

the class Conversions method dataSchemaToDataMap.

/**
 * Return a {@link DataMap} representation of the provided {@link NamedDataSchema}.
 *
 * @param schema provides the {@link NamedDataSchema}.
 * @return a {@link DataMap} representation of the provided {@link NamedDataSchema}.
 */
public static DataMap dataSchemaToDataMap(NamedDataSchema schema) {
    String inputSchemaAsString = schema.toString();
    try {
        JacksonDataCodec codec = new JacksonDataCodec();
        DataMap schemaAsDataMap = codec.stringToMap(inputSchemaAsString);
        return schemaAsDataMap;
    } catch (IOException e) {
        // codec.readMap from JSON generated from a schema should always be successful.
        throw new IllegalStateException(UNEXPECTED_IOEXCEPTION + inputSchemaAsString, e);
    }
}

Example 27 with JacksonDataCodec

use of com.linkedin.data.codec.JacksonDataCodec in project rest.li by linkedin.

the class Conversions method dataMapToDataSchema.

/**
 * Return a {@link DataSchema} for the provided {@link DataMap}.
 *
 * @param map provides the {@link DataMap} representation of a JSON-encoded {@link DataSchema}.
 * @param parser provides the {@link SchemaParser} that will be used for parsing the map representation of the schema.
 * @return a {@link DataSchema} for the provided {@link DataMap} or null if the map does not represent a valid schema,
 *         parse errors can be obtained from the provided {@link SchemaParser}.
 */
public static DataSchema dataMapToDataSchema(DataMap map, PegasusSchemaParser parser) {
    // Convert DataMap into DataSchema
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    JacksonDataCodec codec = new JacksonDataCodec();
    try {
        codec.writeMap(map, outputStream);
    } catch (IOException e) {
        // This should never occur
        throw new IllegalStateException(UNEXPECTED_IOEXCEPTION + map, e);
    }
    ByteArrayInputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
    parser.parse(inputStream);
    List<DataSchema> topLevelDataSchemas = parser.topLevelDataSchemas();
    assert (topLevelDataSchemas.size() <= 1);
    if (parser.hasError()) {
        return null;
    } else if (topLevelDataSchemas.size() != 1) {
        // This should never occur
        throw new IllegalStateException(WRONG_NUMBER_OF_SCHEMA_LEFT + topLevelDataSchemas);
    }
    return topLevelDataSchemas.get(0);
}