Examples of co.cask.cdap.internal.io.SchemaTypeAdapter

co.cask.cdap.internal.io.SchemaTypeAdapter

Class for serialize/deserialize Schema object to/from json through {@link com.google.gson.Gson Gson}.

Expected usage:

 Schema schema = ...; Gson gson = new GsonBuilder() .registerTypeAdapter(Schema.class, new SchemaTypeAdapter()) .create(); String json = gson.toJson(schema); Schema newSchema = gson.fromJson(json, Schema.class);

    if (schemaStr == null) {
      throw new IOException("Missing 'stream.schema' property.");
    }


    try {
      Schema schema = new SchemaTypeAdapter().read(new JsonReader(new StringReader(schemaStr)));
      if (!StreamEventDataCodec.STREAM_DATA_SCHEMA.equals(schema)) {
        throw new IOException("Unsupported schema " + schemaStr);
      }


    } catch (JsonSyntaxException e) {

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    return new ApplicationSpecificationAdapter(generator, builder.create());
  }


  public static void addTypeAdapters(GsonBuilder builder) {
    builder
      .registerTypeAdapter(Schema.class, new SchemaTypeAdapter())
      .registerTypeAdapter(ApplicationSpecification.class, new ApplicationSpecificationCodec())
      .registerTypeAdapter(FlowSpecification.class, new FlowSpecificationCodec())
      .registerTypeAdapter(FlowletSpecification.class, new FlowletSpecificationCodec())
      .registerTypeAdapter(ProcedureSpecification.class, new ProcedureSpecificationCodec())
      .registerTypeAdapter(MapReduceSpecification.class, new MapReduceSpecificationCodec())

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Related Classes of co.cask.cdap.internal.io.SchemaTypeAdapter

co.cask.cdap.data.stream.StreamDataFileReader

co.cask.cdap.internal.app.ApplicationSpecificationAdapter

com.google.gson.stream.JsonToken

java.io.IOException

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