Java Code Examples for org.apache.flink.formats.avro.typeutils.AvroSchemaConverter#convertToTypeInfo()

The following examples show how to use org.apache.flink.formats.avro.typeutils.AvroSchemaConverter#convertToTypeInfo() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: AvroRowDeserializationSchema.java From Flink-CEPplus with Apache License 2.0

5 votes

/**
 * Creates a Avro deserialization schema for the given specific record class. Having the
 * concrete Avro record class might improve performance.
 *
 * @param recordClazz Avro record class used to deserialize Avro's record to Flink's row
 */
public AvroRowDeserializationSchema(Class<? extends SpecificRecord> recordClazz) {
	Preconditions.checkNotNull(recordClazz, "Avro record class must not be null.");
	this.recordClazz = recordClazz;
	schema = SpecificData.get().getSchema(recordClazz);
	typeInfo = (RowTypeInfo) AvroSchemaConverter.convertToTypeInfo(recordClazz);
	schemaString = schema.toString();
	record = (IndexedRecord) SpecificData.newInstance(recordClazz, schema);
	datumReader = new SpecificDatumReader<>(schema);
	inputStream = new MutableByteArrayInputStream();
	decoder = DecoderFactory.get().binaryDecoder(inputStream, null);
}

Example 2

Source File: AvroRowDeserializationSchema.java From Flink-CEPplus with Apache License 2.0

5 votes

/**
 * Creates a Avro deserialization schema for the given Avro schema string.
 *
 * @param avroSchemaString Avro schema string to deserialize Avro's record to Flink's row
 */
public AvroRowDeserializationSchema(String avroSchemaString) {
	Preconditions.checkNotNull(avroSchemaString, "Avro schema must not be null.");
	recordClazz = null;
	final TypeInformation<?> typeInfo = AvroSchemaConverter.convertToTypeInfo(avroSchemaString);
	Preconditions.checkArgument(typeInfo instanceof RowTypeInfo, "Row type information expected.");
	this.typeInfo = (RowTypeInfo) typeInfo;
	schemaString = avroSchemaString;
	schema = new Schema.Parser().parse(avroSchemaString);
	record = new GenericData.Record(schema);
	datumReader = new GenericDatumReader<>(schema);
	inputStream = new MutableByteArrayInputStream();
	decoder = DecoderFactory.get().binaryDecoder(inputStream, null);
}

Example 3

Source File: AvroRowDeserializationSchema.java From Flink-CEPplus with Apache License 2.0

5 votes

@SuppressWarnings("unchecked")
private void readObject(ObjectInputStream inputStream) throws ClassNotFoundException, IOException {
	recordClazz = (Class<? extends SpecificRecord>) inputStream.readObject();
	schemaString = inputStream.readUTF();
	typeInfo = (RowTypeInfo) AvroSchemaConverter.<Row>convertToTypeInfo(schemaString);
	schema = new Schema.Parser().parse(schemaString);
	if (recordClazz != null) {
		record = (SpecificRecord) SpecificData.newInstance(recordClazz, schema);
	} else {
		record = new GenericData.Record(schema);
	}
	datumReader = new SpecificDatumReader<>(schema);
	this.inputStream = new MutableByteArrayInputStream();
	decoder = DecoderFactory.get().binaryDecoder(this.inputStream, null);
}

Example 4