Package com.clickhouse.data

Interface ClickHouseDeserializer

All Known Implementing Classes:

ClickHouseDeserializer.CompositeDeserializer, ClickHouseDeserializer.ResetValueDeserializer

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface ClickHouseDeserializer

Functional interface for deserialization.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	ClickHouseDeserializer.CompositeDeserializer
static final class	ClickHouseDeserializer.ResetValueDeserializer

Field Summary

Fields

Modifier and Type	Field	Description
static final ClickHouseDeserializer	EMPTY_VALUE	Default deserializer simply returns empty value.
static final ClickHouseDeserializer	NOT_SUPPORTED	Default deserializer throws IOException to inform caller deserialization is not supported.
static final String	TYPE_NAME

Method Summary

Modifier and Type	Method	Description
ClickHouseValue	deserialize(ClickHouseValue ref, ClickHouseInputStream input)	Deserializes data read from input stream.
static ClickHouseDeserializer	of(ClickHouseDeserializer first, ClickHouseDeserializer... more)	Creates composite deserializer.
static ClickHouseDeserializer	of(List<ClickHouseDeserializer> list)

Field Details

EMPTY_VALUE

static final ClickHouseDeserializer EMPTY_VALUE

Default deserializer simply returns empty value.

NOT_SUPPORTED

static final ClickHouseDeserializer NOT_SUPPORTED

Default deserializer throws IOException to inform caller deserialization is not supported.

TYPE_NAME

static final String TYPE_NAME

See Also:

• Constant Field Values

Method Details

of

static ClickHouseDeserializer of(ClickHouseDeserializer first,
 ClickHouseDeserializer... more)

Creates composite deserializer.

Parameters:

first - first deserializer

more - other deserializers

Returns:

composite deserializer

of

static ClickHouseDeserializer of(List<ClickHouseDeserializer> list)

deserialize

ClickHouseValue deserialize(ClickHouseValue ref,
 ClickHouseInputStream input)
                     throws IOException

Deserializes data read from input stream.

Parameters:

ref - wrapper object can be reused, could be null(always return new wrapper object)

input - non-null input stream

Returns:

deserialized value which usually is same as ref, return null if the deserialization expects more

Throws:

IOException - when failed to read data from input stream