接口的使用
org.apache.pulsar.client.api.Schema

使用Schema的程序包

程序包	说明
org.apache.pulsar.client.api	Pulsar Client API.
org.apache.pulsar.client.api.schema	Schema definitions for Pulsar Client API.
org.apache.pulsar.client.internal	Helpers which provide useful functionality for the implementation of Pulsar Client API.
org.apache.pulsar.common.schema	This package contains data structures for schema definitions used in the Pulsar Client API.

org.apache.pulsar.client.api中Schema的使用

声明为Schema的org.apache.pulsar.client.api中的字段

修饰符和类型	字段	说明
static final Schema<Boolean>	Schema.BOOL	Boolean Schema.
static final Schema<ByteBuffer>	Schema.BYTEBUFFER	ByteBuffer Schema.
static final Schema<byte[]>	Schema.BYTES	Schema that doesn't perform any encoding on the message payloads.
static final Schema<Date>	Schema.DATE	Date Schema.
static final Schema<Double>	Schema.DOUBLE	Double Schema.
static final Schema<Float>	Schema.FLOAT	Float Schema.
static final Schema<Instant>	Schema.INSTANT	Instant Schema.
static final Schema<Short>	Schema.INT16	INT16 Schema.
static final Schema<Integer>	Schema.INT32	INT32 Schema.
static final Schema<Long>	Schema.INT64	INT64 Schema.
static final Schema<Byte>	Schema.INT8	INT8 Schema.
static final Schema<LocalDate>	Schema.LOCAL_DATE	LocalDate Schema.
static final Schema<LocalDateTime>	Schema.LOCAL_DATE_TIME	LocalDateTime Schema.
static final Schema<LocalTime>	Schema.LOCAL_TIME	LocalTime Schema.
static final Schema<String>	Schema.STRING	Schema that can be used to encode/decode messages whose values are String.
static final Schema<Time>	Schema.TIME	Time Schema.
static final Schema<Timestamp>	Schema.TIMESTAMP	Timestamp Schema.

返回Schema的org.apache.pulsar.client.api中的方法

修饰符和类型	方法	说明
static Schema<GenericRecord>	Schema.AUTO()	已过时。
static Schema<GenericRecord>	Schema.AUTO_CONSUME()	Create a schema instance that automatically deserialize messages based on the current topic schema.
static Schema<byte[]>	Schema.AUTO_PRODUCE_BYTES()	Create a schema instance that accepts a serialized payload and validates it against the topic schema.
static Schema<byte[]>	Schema.AUTO_PRODUCE_BYTES(Schema<?> schema)	Create a schema instance that accepts a serialized payload and validates it against the schema specified.
static <T> Schema<T>	Schema.AVRO(Class<T> pojo)	Create a Avro schema type by default configuration of the class.
static <T> Schema<T>	Schema.AVRO(SchemaDefinition<T> schemaDefinition)	Create a Avro schema type with schema definition.
Schema<T>	Schema.clone()	Duplicates the schema.
static Schema<?>	Schema.getSchema(SchemaInfo schemaInfo)
static <T> Schema<T>	Schema.JSON(Class<T> pojo)	Create a JSON schema type by extracting the fields of the specified class.
static <T> Schema<T>	Schema.JSON(SchemaDefinition schemaDefinition)	Create a JSON schema type with schema definition.
static <K, V> Schema<KeyValue<K,V>>	Schema.KeyValue(Class<K> key, Class<V> value)	Key Value Schema whose underneath key and value schemas are JSONSchema.
static <K, V> Schema<KeyValue<K,V>>	Schema.KeyValue(Class<K> key, Class<V> value, SchemaType type)	Key Value Schema using passed in schema type, support JSON and AVRO currently.
static <K, V> Schema<KeyValue<K,V>>	Schema.KeyValue(Schema<K> key, Schema<V> value)	Key Value Schema using passed in key and value schemas with KeyValueEncodingType.INLINE encoding type.
static <K, V> Schema<KeyValue<K,V>>	Schema.KeyValue(Schema<K> key, Schema<V> value, KeyValueEncodingType keyValueEncodingType)	Key Value Schema using passed in key, value and encoding type schemas.
static Schema<KeyValue<byte[],byte[]>>	Schema.KV_BYTES()	Schema that can be used to encode/decode KeyValue.
static Schema<byte[]>	Schema.NATIVE_AVRO(Object schema)	Create a schema instance that accepts a serialized Avro payload without validating it against the schema specified.
static <T extends com.google.protobuf.GeneratedMessageV3> Schema<T>	Schema.PROTOBUF(Class<T> clazz)	Create a Protobuf schema type by extracting the fields of the specified class.
static <T extends com.google.protobuf.GeneratedMessageV3> Schema<T>	Schema.PROTOBUF(SchemaDefinition<T> schemaDefinition)	Create a Protobuf schema type with schema definition.
static <T extends com.google.protobuf.GeneratedMessageV3> Schema<T>	Schema.PROTOBUF_NATIVE(Class<T> clazz)	Create a Protobuf-Native schema type by extracting the fields of the specified class.
static <T extends com.google.protobuf.GeneratedMessageV3> Schema<T>	Schema.PROTOBUF_NATIVE(SchemaDefinition<T> schemaDefinition)	Create a Protobuf-Native schema type with schema definition.

返回变量类型为Schema的类型的org.apache.pulsar.client.api中的方法

修饰符和类型	方法	说明
default Optional<Schema<?>>	Message.getReaderSchema()	Get the schema associated to the message.

参数类型为Schema的org.apache.pulsar.client.api中的方法

修饰符和类型	方法	说明
<T> Message<T>	MessagePayloadContext.asSingleMessage(MessagePayload payload, Schema<T> schema)	Convert the given payload to a single message if the entry is not a batch.
static Schema<byte[]>	Schema.AUTO_PRODUCE_BYTES(Schema<?> schema)	Create a schema instance that accepts a serialized payload and validates it against the schema specified.
<T> Message<T>	MessagePayloadContext.getMessageAt(int index, int numMessages, MessagePayload payload, boolean containMetadata, Schema<T> schema)	Get the internal single message with a specific index from a payload if the payload is a batch.
static <K, V> Schema<KeyValue<K,V>>	Schema.KeyValue(Schema<K> key, Schema<V> value)	Key Value Schema using passed in key and value schemas with KeyValueEncodingType.INLINE encoding type.
static <K, V> Schema<KeyValue<K,V>>	Schema.KeyValue(Schema<K> key, Schema<V> value, KeyValueEncodingType keyValueEncodingType)	Key Value Schema using passed in key, value and encoding type schemas.
<T> ConsumerBuilder<T>	PulsarClient.newConsumer(Schema<T> schema)	Create a consumer builder with a specific schema for subscribing on a specific topic
<V> TypedMessageBuilder<V>	Producer.newMessage(Schema<V> schema)	Create a new message builder with schema, not required same parameterized type with the producer.
<T> ProducerBuilder<T>	PulsarClient.newProducer(Schema<T> schema)	Create a producer builder that can be used to configure and construct a producer with the specified schema.
<T> ReaderBuilder<T>	PulsarClient.newReader(Schema<T> schema)	Create a topic reader builder with a specific Schema) to read from the specified topic.
<T> TableViewBuilder<T>	PulsarClient.newTableView(Schema<T> schema)	Create a table view builder with a specific schema for subscribing on a specific topic.
<T> TableViewBuilder<T>	PulsarClient.newTableViewBuilder(Schema<T> schema)	已过时。 Use PulsarClient.newTableView(Schema) to build and configure a TableViewBuilder instance
<T> void	MessagePayloadProcessor.process(MessagePayload payload, MessagePayloadContext context, Schema<T> schema, Consumer<Message<T>> messageConsumer)	Process the message payload.

org.apache.pulsar.client.api.schema中Schema的使用

org.apache.pulsar.client.api.schema中Schema的子接口

修饰符和类型	接口	说明
interface	GenericSchema<T extends GenericRecord>	A schema that serializes and deserializes between GenericRecord and bytes.
interface	KeyValueSchema<K,V>	This interface models a Schema that is composed of two parts.

返回Schema的org.apache.pulsar.client.api.schema中的方法

修饰符和类型	方法	说明
Schema<K>	KeyValueSchema.getKeySchema()	Get the Schema of the Key.
Schema<V>	KeyValueSchema.getValueSchema()	Get the Schema of the Value.

org.apache.pulsar.client.internal中Schema的使用

返回Schema的org.apache.pulsar.client.internal中的方法

修饰符和类型	方法	说明
Schema<?>	PulsarClientImplementationBinding.getSchema(SchemaInfo schemaInfo)
Schema<GenericRecord>	PulsarClientImplementationBinding.newAutoConsumeSchema()
Schema<byte[]>	PulsarClientImplementationBinding.newAutoProduceSchema()
Schema<byte[]>	PulsarClientImplementationBinding.newAutoProduceSchema(Schema<?> schema)
Schema<byte[]>	PulsarClientImplementationBinding.newAutoProduceValidatedAvroSchema(Object schema)
<T> Schema<T>	PulsarClientImplementationBinding.newAvroSchema(SchemaDefinition schemaDefinition)
Schema<Boolean>	PulsarClientImplementationBinding.newBooleanSchema()
Schema<ByteBuffer>	PulsarClientImplementationBinding.newByteBufferSchema()
Schema<Byte>	PulsarClientImplementationBinding.newByteSchema()
Schema<byte[]>	PulsarClientImplementationBinding.newBytesSchema()
Schema<Date>	PulsarClientImplementationBinding.newDateSchema()
Schema<Double>	PulsarClientImplementationBinding.newDoubleSchema()
Schema<Float>	PulsarClientImplementationBinding.newFloatSchema()
Schema<Instant>	PulsarClientImplementationBinding.newInstantSchema()
Schema<Integer>	PulsarClientImplementationBinding.newIntSchema()
<T> Schema<T>	PulsarClientImplementationBinding.newJSONSchema(SchemaDefinition schemaDefinition)
Schema<KeyValue<byte[],byte[]>>	PulsarClientImplementationBinding.newKeyValueBytesSchema()
<K, V> Schema<KeyValue<K,V>>	PulsarClientImplementationBinding.newKeyValueSchema(Class<K> key, Class<V> value, SchemaType type)
<K, V> Schema<KeyValue<K,V>>	PulsarClientImplementationBinding.newKeyValueSchema(Schema<K> keySchema, Schema<V> valueSchema, KeyValueEncodingType keyValueEncodingType)
Schema<LocalDate>	PulsarClientImplementationBinding.newLocalDateSchema()
Schema<LocalDateTime>	PulsarClientImplementationBinding.newLocalDateTimeSchema()
Schema<LocalTime>	PulsarClientImplementationBinding.newLocalTimeSchema()
Schema<Long>	PulsarClientImplementationBinding.newLongSchema()
<T extends com.google.protobuf.GeneratedMessageV3> Schema<T>	PulsarClientImplementationBinding.newProtobufNativeSchema(SchemaDefinition schemaDefinition)
<T extends com.google.protobuf.GeneratedMessageV3> Schema<T>	PulsarClientImplementationBinding.newProtobufSchema(SchemaDefinition schemaDefinition)
Schema<Short>	PulsarClientImplementationBinding.newShortSchema()
Schema<String>	PulsarClientImplementationBinding.newStringSchema()
Schema<String>	PulsarClientImplementationBinding.newStringSchema(Charset charset)
Schema<Time>	PulsarClientImplementationBinding.newTimeSchema()
Schema<Timestamp>	PulsarClientImplementationBinding.newTimestampSchema()

参数类型为Schema的org.apache.pulsar.client.internal中的方法

修饰符和类型	方法	说明
<K, V> SchemaInfo	PulsarClientImplementationBinding.encodeKeyValueSchemaInfo(String schemaName, Schema<K> keySchema, Schema<V> valueSchema, KeyValueEncodingType keyValueEncodingType)	Encode key & value into schema into a KeyValue schema.
<K, V> SchemaInfo	PulsarClientImplementationBinding.encodeKeyValueSchemaInfo(Schema<K> keySchema, Schema<V> valueSchema, KeyValueEncodingType keyValueEncodingType)	Encode key & value into schema into a KeyValue schema.
Schema<byte[]>	PulsarClientImplementationBinding.newAutoProduceSchema(Schema<?> schema)
<K, V> Schema<KeyValue<K,V>>	PulsarClientImplementationBinding.newKeyValueSchema(Schema<K> keySchema, Schema<V> valueSchema, KeyValueEncodingType keyValueEncodingType)

org.apache.pulsar.common.schema中Schema的使用

参数类型为Schema的org.apache.pulsar.common.schema中的方法

修饰符和类型	方法	说明
static <K, V> byte[]	KeyValue.encode(K key, Schema<K> keyWriter, V value, Schema<V> valueWriter)	Encode a key and value pair into a bytes array.