Package org.apache.pulsar.client.impl.schema.reader

Class AbstractMultiVersionReader<T>

java.lang.Object

org.apache.pulsar.client.impl.schema.reader.AbstractMultiVersionReader<T>

All Implemented Interfaces:

SchemaReader<T>

Direct Known Subclasses:

AbstractMultiVersionAvroBaseReader, MultiVersionGenericProtobufNativeReader

public abstract class AbstractMultiVersionReader<T>
extends Object
implements SchemaReader<T>

The multi version reader abstract class, implement it will handle the multi version schema.

Field Summary

Fields

Modifier and Type	Field	Description
protected static final org.slf4j.Logger	LOG
protected final SchemaReader<T>	providerSchemaReader
protected SchemaInfoProvider	schemaInfoProvider

Constructor Summary

Constructors

Constructor	Description
AbstractMultiVersionReader(SchemaReader<T> providerSchemaReader)

Method Summary

Modifier and Type	Method	Description
protected SchemaInfo	getSchemaInfoByVersion(byte[] schemaVersion)	TODO: think about how to make this async.
SchemaReader<T>	getSchemaReader(byte[] schemaVersion)
protected abstract SchemaReader<T>	loadReader(BytesSchemaVersion schemaVersion)	Load the schema reader for reading messages encoded by the given schema version.
T	read(byte[] bytes, byte[] schemaVersion)
T	read(byte[] bytes, int offset, int length)
T	read(InputStream inputStream)
T	read(InputStream inputStream, byte[] schemaVersion)
void	setSchemaInfoProvider(SchemaInfoProvider schemaInfoProvider)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.pulsar.client.api.schema.SchemaReader

getNativeSchema, read

Field Details

providerSchemaReader

protected final SchemaReader<T> providerSchemaReader

schemaInfoProvider

protected SchemaInfoProvider schemaInfoProvider

LOG

protected static final org.slf4j.Logger LOG

Constructor Details

AbstractMultiVersionReader

public AbstractMultiVersionReader(SchemaReader<T> providerSchemaReader)

Method Details

read

public T read(byte[] bytes,
 int offset,
 int length)

Specified by:

read in interface SchemaReader<T>

read

public T read(InputStream inputStream)

Specified by:

read in interface SchemaReader<T>

read

public T read(InputStream inputStream,
 byte[] schemaVersion)

Specified by:

read in interface SchemaReader<T>

getSchemaReader

public SchemaReader<T> getSchemaReader(byte[] schemaVersion)
                                throws ExecutionException

Throws:

ExecutionException

read

public T read(byte[] bytes,
 byte[] schemaVersion)

Specified by:

read in interface SchemaReader<T>

setSchemaInfoProvider

public void setSchemaInfoProvider(SchemaInfoProvider schemaInfoProvider)

Specified by:

setSchemaInfoProvider in interface SchemaReader<T>

loadReader

protected abstract SchemaReader<T> loadReader(BytesSchemaVersion schemaVersion)

Load the schema reader for reading messages encoded by the given schema version.

Parameters:

schemaVersion - the provided schema version

Returns:

the schema reader for decoding messages encoded by the provided schema version.

getSchemaInfoByVersion

protected SchemaInfo getSchemaInfoByVersion(byte[] schemaVersion)

TODO: think about how to make this async.