Package org.apache.cassandra.cdc.avro

Interface TypeConversion<T>

Type Parameters:

T - target type

All Known Implementing Classes:

TypeConversion.DateConversion, TypeConversion.DecimalConversion, TypeConversion.InetAddressConversion, TypeConversion.ListConversion, TypeConversion.MapConversion, TypeConversion.SetConversion, TypeConversion.TimestampConversion, TypeConversion.UdtConversion, TypeConversion.UUIDConversion, TypeConversion.VarIntConversion

public interface TypeConversion<T>

Type conversion from the source type to the target type.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	TypeConversion.DateConversion	Converts date value in Integer to LocalDate.
static class	TypeConversion.DecimalConversion	Converts GenericFixed to BigDecimal.
static class	TypeConversion.InetAddressConversion
static class	TypeConversion.ListConversion	Converts GenericData.Array (, which is a List,) into List The conversion is identity.
static class	TypeConversion.MapConversion	Converts GenericData.Array (, which is a List,) of GenericRecord into Map The contained GenericRecord should be an avro key-value record.
static interface	TypeConversion.Registry	Registry for TypeConversion to perform register and lookup
static class	TypeConversion.SetConversion	Converts GenericData.Array (, which is a List,) into Set The conversion is done recursively, meaning the elements of the input are converted too.
static class	TypeConversion.TimestampConversion	Converts Long to Date.
static class	TypeConversion.TypeMapping	A simple data class that represents the type mapping between the source type and target type.
static class	TypeConversion.UdtConversion	Converts a UDT GenericRecord into Map The GenericRecord should be an avro key-value record.
static class	TypeConversion.UUIDConversion	Converts either String or Utf8 to UUID.
static class	TypeConversion.VarIntConversion	Converts GenericFixed to BigInteger.

Method Summary

Modifier and Type	Method	Description
T	convert(org.apache.avro.Schema fieldSchema, java.lang.Object fieldValue)	Convert value from the source type to the target type.
static void	ensureInputValueType(java.lang.String conversionName, java.lang.Object input, java.lang.Class<?> expectedType)	Validate the input is the expected type
static byte[]	getArray(java.nio.ByteBuffer buffer)
static byte[]	getArray(java.nio.ByteBuffer buffer, int position, int length)
TypeConversion.TypeMapping	typeMapping()	Type mapping from the source type to the target type.

Method Detail

typeMapping

TypeConversion.TypeMapping typeMapping()

Type mapping from the source type to the target type.

Returns:

the type mapping.

convert

T convert(org.apache.avro.Schema fieldSchema,
          @NotNull
          java.lang.Object fieldValue)

Convert value from the source type to the target type. Runtime exceptions are thrown on invalid argument or conversion failure.

Parameters:

fieldSchema - avro schema to loop up the source schema

fieldValue - value in the source type. The value cannot be null.

Returns:

the converted value

ensureInputValueType

static void ensureInputValueType(java.lang.String conversionName,
                                 java.lang.Object input,
                                 java.lang.Class<?> expectedType)

Validate the input is the expected type

Parameters:

conversionName - class name of type

input - value to convert

expectedType - expected class of type

Throws:

java.lang.IllegalArgumentException - if type mismatches

getArray

static byte[] getArray(java.nio.ByteBuffer buffer)

getArray

static byte[] getArray(java.nio.ByteBuffer buffer,
                       int position,
                       int length)