net.openhft.chronicle.wire

Class BinaryWire.BinaryValueIn

java.lang.Object

net.openhft.chronicle.wire.BinaryWire.BinaryValueIn

All Implemented Interfaces:

ValueIn

Enclosing class:

BinaryWire

protected class BinaryWire.BinaryValueIn
extends Object
implements ValueIn

Nested Class Summary

Nested classes/interfaces inherited from interface net.openhft.chronicle.wire.ValueIn

ValueIn.Reader

Field Summary

Fields inherited from interface net.openhft.chronicle.wire.ValueIn

DISCARD

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BinaryValueIn()

Method Summary

Modifier and Type	Method and Description
protected <T> T	anchor()
<T> T	applyToMarshallable(@NotNull Function<WireIn,T> marshallableReader)
boolean	bool()
WireIn	bool(@NotNull net.openhft.chronicle.core.values.BooleanValue value)
<T> @NotNull WireIn	bool(T t, @NotNull net.openhft.chronicle.core.util.ObjBooleanConsumer<T> tFlag)
@Nullable byte[]	bytes(byte[] using)
@NotNull WireIn	bytes(@NotNull net.openhft.chronicle.bytes.BytesOut<?> toBytes)
@NotNull WireIn	bytes(@NotNull net.openhft.chronicle.bytes.BytesOut<?> toBytes, boolean clearBytes)
@NotNull WireIn	bytes(@NotNull net.openhft.chronicle.bytes.ReadBytesMarshallable bytesConsumer)
@NotNull net.openhft.chronicle.bytes.BytesStore	bytesLiteral()
@NotNull WireIn	bytesLiteral(@NotNull net.openhft.chronicle.bytes.BytesOut<?> toBytes)
@NotNull WireIn	bytesMatch(@NotNull net.openhft.chronicle.bytes.BytesStore compareBytes, @NotNull net.openhft.chronicle.core.util.BooleanConsumer consumer)
@Nullable WireIn	bytesSet(@NotNull net.openhft.chronicle.bytes.PointerBytesStore toBytes)
@Nullable net.openhft.chronicle.bytes.BytesStore	bytesStore()
void	bytesStore(@NotNull net.openhft.chronicle.bytes.Bytes<?> toBytes)
void	bytesStore(@NotNull StringBuilder sb)
net.openhft.chronicle.core.pool.ClassLookup	classLookup()
net.openhft.chronicle.wire.ValueInState	curr()
<T> @NotNull WireIn	date(T t, @NotNull BiConsumer<T,LocalDate> tLocalDate)
@Nullable Demarshallable	demarshallable(@NotNull Class clazz)
float	float32()
<T> @NotNull WireIn	float32(T t, @NotNull net.openhft.chronicle.core.util.ObjFloatConsumer<T> tf)
double	float64()
<T> @NotNull WireIn	float64(T t, @NotNull ObjDoubleConsumer<T> td)
@NotNull BracketType	getBracketType()
boolean	hasNext()
boolean	hasNextSequenceItem()
@NotNull WireIn	int128(@NotNull net.openhft.chronicle.core.values.TwoLongValue value)
short	int16()
<T> @NotNull WireIn	int16(T t, @NotNull net.openhft.chronicle.core.util.ObjShortConsumer<T> ti)
int	int32()
@NotNull WireIn	int32(@NotNull net.openhft.chronicle.core.values.IntValue value)
<T> @NotNull WireIn	int32(@Nullable net.openhft.chronicle.core.values.IntValue value, T t, @NotNull BiConsumer<T,net.openhft.chronicle.core.values.IntValue> setter)
<T> @NotNull WireIn	int32(T t, @NotNull ObjIntConsumer<T> ti)
long	int64()
@NotNull WireIn	int64(@NotNull net.openhft.chronicle.core.values.LongValue value)
<T> @NotNull WireIn	int64(@Nullable net.openhft.chronicle.core.values.LongValue value, T t, @NotNull BiConsumer<T,net.openhft.chronicle.core.values.LongValue> setter)
<T> @NotNull WireIn	int64(T t, @NotNull ObjLongConsumer<T> tl)
<T> @NotNull WireIn	int64array(@Nullable net.openhft.chronicle.core.values.LongArrayValues values, T t, @NotNull BiConsumer<T,net.openhft.chronicle.core.values.LongArrayValues> setter)
byte	int8()
<T> @NotNull WireIn	int8(T t, @NotNull net.openhft.chronicle.core.util.ObjByteConsumer<T> tb)
boolean	isBinary()
boolean	isNull()
boolean	isTyped()
@Nullable Object	marshallable(@NotNull Object object, @NotNull SerializationStrategy strategy)
boolean	marshallable(@NotNull ReadMarshallable object)
boolean	marshallable(@NotNull ReadMarshallable object, boolean overwrite)
Object	objectWithInferredType(Object using, @NotNull SerializationStrategy strategy, Class type)
void	popState()
void	pushState()
long	readLength() the length of the field as bytes including any encoding and header character
long	readLong(LongConverter longConverter)
void	resetState()
<T> boolean	sequence(@NotNull List<T> list, @NotNull List<T> buffer, @NotNull Supplier<T> bufferAdd) sequence to use when using a cached buffer
<T> boolean	sequence(List<T> list, @NotNull List<T> buffer, Supplier<T> bufferAdd, ValueIn.Reader tReader)
<T> boolean	sequence(T t, @NotNull BiConsumer<T,ValueIn> tReader)
<T,K> @NotNull WireIn	sequence(T t, K kls, @NotNull TriConsumer<T,K,ValueIn> tReader)
<T> int	sequenceWithLength(T t, @NotNull ToIntBiFunction<ValueIn,T> tReader)
@NotNull WireIn	skipValue()
@Nullable String	text()
@Nullable net.openhft.chronicle.bytes.Bytes<?>	textTo(@NotNull net.openhft.chronicle.bytes.Bytes<?> bytes)
@Nullable StringBuilder	textTo(@NotNull StringBuilder sb)
<T> @NotNull WireIn	time(T t, @NotNull BiConsumer<T,LocalTime> setLocalTime)
<T> T	typedMarshallable()
<T> T	typedMarshallable(@NotNull Function<Class,ReadMarshallable> marshallableFunction)
protected <T> T	typedMarshallable0()
Type	typeLiteral(BiFunction<CharSequence,ClassNotFoundException,Type> unresolvedHandler)
<T> @NotNull WireIn	typeLiteralAsText(T t, @NotNull BiConsumer<T,CharSequence> classNameConsumer)
Class	typePrefix()
<T> @NotNull ValueIn	typePrefix(T t, @NotNull BiConsumer<T,CharSequence> ts)
Object	typePrefixOrObject(Class tClass) read a class with a super class or actual class as a hint
int	uint16()
<T> @NotNull WireIn	uint16(T t, @NotNull ObjIntConsumer<T> ti)
<T> @NotNull WireIn	uint32(T t, @NotNull ObjLongConsumer<T> tl)
<T> @NotNull WireIn	uint8(T t, @NotNull net.openhft.chronicle.core.util.ObjShortConsumer<T> ti)
protected <T> T	updateAlias()
@NotNull UUID	uuid()
<T> @NotNull WireIn	uuid(T t, @NotNull BiConsumer<T,UUID> tuuid)
@NotNull WireIn	wireIn()
<T> @NotNull WireIn	zonedDateTime(T t, @NotNull BiConsumer<T,ZonedDateTime> tZonedDateTime)

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.openhft.chronicle.wire.ValueIn

array, array, array, array, array, array, arrayDelta, arrayDelta, asEnum, asEnum, asEnum, byteBuffer, bytes, character, collection, collection, date, dateTime, float32, float64, int32, int64, int64ForBinding, isPresent, lenientTypeLiteral, list, list, marshallable, marshallableAsMap, marshallableAsMap, object, object, object, object, object, objectBestEffort, readBoolean, readByte, readChar, readDouble, reader0, readFloat, readInt, readLong, readShort, readString, sequence, set, set, text, text, text, throwable, time, typeLiteral, typeLiteral, typeLiteral, zonedDateTime

Constructor Detail

BinaryValueIn

protected BinaryValueIn()

Method Detail

isBinary

public boolean isBinary()

Specified by:

isBinary in interface ValueIn

readLong

public long readLong(LongConverter longConverter)

Specified by:

readLong in interface ValueIn

resetState

public void resetState()

Specified by:

resetState in interface ValueIn

pushState

public void pushState()

popState

public void popState()

curr

public net.openhft.chronicle.wire.ValueInState curr()

getBracketType

@NotNull
public @NotNull BracketType getBracketType()

Specified by:

getBracketType in interface ValueIn

textTo

@Nullable
public @Nullable StringBuilder textTo(@NotNull
                                                @NotNull StringBuilder sb)

Specified by:

textTo in interface ValueIn

textTo

@Nullable
public @Nullable net.openhft.chronicle.bytes.Bytes<?> textTo(@NotNull
                                                                       @NotNull net.openhft.chronicle.bytes.Bytes<?> bytes)

Specified by:

textTo in interface ValueIn

text

@Nullable
public @Nullable String text()

Specified by:

text in interface ValueIn

bytes

@NotNull
public @NotNull WireIn bytes(@NotNull
                                      @NotNull net.openhft.chronicle.bytes.BytesOut<?> toBytes)

Specified by:

bytes in interface ValueIn

bytes

@NotNull
public @NotNull WireIn bytes(@NotNull
                                      @NotNull net.openhft.chronicle.bytes.BytesOut<?> toBytes,
                                      boolean clearBytes)

Specified by:

bytes in interface ValueIn

bytesLiteral

@NotNull
public @NotNull WireIn bytesLiteral(@NotNull
                                             @NotNull net.openhft.chronicle.bytes.BytesOut<?> toBytes)

Specified by:

bytesLiteral in interface ValueIn

bytesLiteral

@NotNull
public @NotNull net.openhft.chronicle.bytes.BytesStore bytesLiteral()

Specified by:

bytesLiteral in interface ValueIn

bytesSet

@Nullable
public @Nullable WireIn bytesSet(@NotNull
                                           @NotNull net.openhft.chronicle.bytes.PointerBytesStore toBytes)

Specified by:

bytesSet in interface ValueIn

bytesMatch

@NotNull
public @NotNull WireIn bytesMatch(@NotNull
                                           @NotNull net.openhft.chronicle.bytes.BytesStore compareBytes,
                                           @NotNull
                                           @NotNull net.openhft.chronicle.core.util.BooleanConsumer consumer)

Specified by:

bytesMatch in interface ValueIn

bytesStore

@Nullable
public @Nullable net.openhft.chronicle.bytes.BytesStore bytesStore()

Specified by:

bytesStore in interface ValueIn

bytesStore

public void bytesStore(@NotNull
                       @NotNull StringBuilder sb)

bytesStore

public void bytesStore(@NotNull
                       @NotNull net.openhft.chronicle.bytes.Bytes<?> toBytes)

bytes

@NotNull
public @NotNull WireIn bytes(@NotNull
                                      @NotNull net.openhft.chronicle.bytes.ReadBytesMarshallable bytesConsumer)

Specified by:

bytes in interface ValueIn

bytes

@Nullable
public @Nullable byte[] bytes(byte[] using)

Specified by:

bytes in interface ValueIn

wireIn

@NotNull
public @NotNull WireIn wireIn()

Specified by:

wireIn in interface ValueIn

readLength

public long readLength()

Description copied from interface: ValueIn

the length of the field as bytes including any encoding and header character

Specified by:

readLength in interface ValueIn

skipValue

@NotNull
public @NotNull WireIn skipValue()

Specified by:

skipValue in interface ValueIn

bool

@NotNull
public <T> @NotNull WireIn bool(T t,
                                         @NotNull
                                         @NotNull net.openhft.chronicle.core.util.ObjBooleanConsumer<T> tFlag)

Specified by:

bool in interface ValueIn

int8

@NotNull
public <T> @NotNull WireIn int8(@NotNull
                                         T t,
                                         @NotNull
                                         @NotNull net.openhft.chronicle.core.util.ObjByteConsumer<T> tb)

Specified by:

int8 in interface ValueIn

uint8

@NotNull
public <T> @NotNull WireIn uint8(@NotNull
                                          T t,
                                          @NotNull
                                          @NotNull net.openhft.chronicle.core.util.ObjShortConsumer<T> ti)

Specified by:

uint8 in interface ValueIn

int16

@NotNull
public <T> @NotNull WireIn int16(@NotNull
                                          T t,
                                          @NotNull
                                          @NotNull net.openhft.chronicle.core.util.ObjShortConsumer<T> ti)

Specified by:

int16 in interface ValueIn

uint16

@NotNull
public <T> @NotNull WireIn uint16(@NotNull
                                           T t,
                                           @NotNull
                                           @NotNull ObjIntConsumer<T> ti)

Specified by:

uint16 in interface ValueIn

int32

@NotNull
public <T> @NotNull WireIn int32(@NotNull
                                          T t,
                                          @NotNull
                                          @NotNull ObjIntConsumer<T> ti)

Specified by:

int32 in interface ValueIn

uint32

@NotNull
public <T> @NotNull WireIn uint32(@NotNull
                                           T t,
                                           @NotNull
                                           @NotNull ObjLongConsumer<T> tl)

Specified by:

uint32 in interface ValueIn

int64

@NotNull
public <T> @NotNull WireIn int64(@NotNull
                                          T t,
                                          @NotNull
                                          @NotNull ObjLongConsumer<T> tl)

Specified by:

int64 in interface ValueIn

float32

@NotNull
public <T> @NotNull WireIn float32(@NotNull
                                            T t,
                                            @NotNull
                                            @NotNull net.openhft.chronicle.core.util.ObjFloatConsumer<T> tf)

Specified by:

float32 in interface ValueIn

float64

@NotNull
public <T> @NotNull WireIn float64(@NotNull
                                            T t,
                                            @NotNull
                                            @NotNull ObjDoubleConsumer<T> td)

Specified by:

float64 in interface ValueIn

time

@NotNull
public <T> @NotNull WireIn time(@NotNull
                                         T t,
                                         @NotNull
                                         @NotNull BiConsumer<T,LocalTime> setLocalTime)

Specified by:

time in interface ValueIn

zonedDateTime

@NotNull
public <T> @NotNull WireIn zonedDateTime(@NotNull
                                                  T t,
                                                  @NotNull
                                                  @NotNull BiConsumer<T,ZonedDateTime> tZonedDateTime)

Specified by:

zonedDateTime in interface ValueIn

date

@NotNull
public <T> @NotNull WireIn date(@NotNull
                                         T t,
                                         @NotNull
                                         @NotNull BiConsumer<T,LocalDate> tLocalDate)

Specified by:

date in interface ValueIn

hasNext

public boolean hasNext()

Specified by:

hasNext in interface ValueIn

hasNextSequenceItem

public boolean hasNextSequenceItem()

Specified by:

hasNextSequenceItem in interface ValueIn

uuid

@NotNull
public @NotNull UUID uuid()

Specified by:

uuid in interface ValueIn

uuid

@NotNull
public <T> @NotNull WireIn uuid(@NotNull
                                         T t,
                                         @NotNull
                                         @NotNull BiConsumer<T,UUID> tuuid)

Specified by:

uuid in interface ValueIn

int64array

@NotNull
public <T> @NotNull WireIn int64array(@Nullable
                                               @Nullable net.openhft.chronicle.core.values.LongArrayValues values,
                                               T t,
                                               @NotNull
                                               @NotNull BiConsumer<T,net.openhft.chronicle.core.values.LongArrayValues> setter)

Specified by:

int64array in interface ValueIn

int128

@NotNull
public @NotNull WireIn int128(@NotNull
                                       @NotNull net.openhft.chronicle.core.values.TwoLongValue value)

Specified by:

int128 in interface ValueIn

int64

@NotNull
public @NotNull WireIn int64(@NotNull
                                      @NotNull net.openhft.chronicle.core.values.LongValue value)

Specified by:

int64 in interface ValueIn

int32

@NotNull
public @NotNull WireIn int32(@NotNull
                                      @NotNull net.openhft.chronicle.core.values.IntValue value)

Specified by:

int32 in interface ValueIn

bool

public WireIn bool(@NotNull
                   @NotNull net.openhft.chronicle.core.values.BooleanValue value)

Specified by:

bool in interface ValueIn

int64

@NotNull
public <T> @NotNull WireIn int64(@Nullable
                                          @Nullable net.openhft.chronicle.core.values.LongValue value,
                                          T t,
                                          @NotNull
                                          @NotNull BiConsumer<T,net.openhft.chronicle.core.values.LongValue> setter)

Specified by:

int64 in interface ValueIn

int32

@NotNull
public <T> @NotNull WireIn int32(@Nullable
                                          @Nullable net.openhft.chronicle.core.values.IntValue value,
                                          T t,
                                          @NotNull
                                          @NotNull BiConsumer<T,net.openhft.chronicle.core.values.IntValue> setter)

Specified by:

int32 in interface ValueIn

sequence

public <T> boolean sequence(@NotNull
                            T t,
                            @NotNull
                            @NotNull BiConsumer<T,ValueIn> tReader)

Specified by:

sequence in interface ValueIn

sequence

public <T> boolean sequence(@NotNull
                            @NotNull List<T> list,
                            @NotNull
                            @NotNull List<T> buffer,
                            @NotNull
                            @NotNull Supplier<T> bufferAdd)
                     throws net.openhft.chronicle.core.io.InvalidMarshallableException

Description copied from interface: ValueIn

sequence to use when using a cached buffer

Specified by:

sequence in interface ValueIn

Parameters:

list - of items to populate

buffer - of objects of the same type to reuse

bufferAdd - supplier to call when the buffer needs extending

Returns:

true if there is any data.

Throws:

net.openhft.chronicle.core.io.InvalidMarshallableException

sequence

public <T> boolean sequence(List<T> list,
                            @NotNull
                            @NotNull List<T> buffer,
                            Supplier<T> bufferAdd,
                            ValueIn.Reader tReader)
                     throws net.openhft.chronicle.core.io.InvalidMarshallableException

Specified by:

sequence in interface ValueIn

Throws:

net.openhft.chronicle.core.io.InvalidMarshallableException

sequence

@NotNull
public <T,K> @NotNull WireIn sequence(@NotNull
                                               T t,
                                               K kls,
                                               @NotNull
                                               @NotNull TriConsumer<T,K,ValueIn> tReader)
                                        throws net.openhft.chronicle.core.io.InvalidMarshallableException

Specified by:

sequence in interface ValueIn

Throws:

net.openhft.chronicle.core.io.InvalidMarshallableException

sequenceWithLength

public <T> int sequenceWithLength(@NotNull
                                  T t,
                                  @NotNull
                                  @NotNull ToIntBiFunction<ValueIn,T> tReader)

Specified by:

sequenceWithLength in interface ValueIn

applyToMarshallable

public <T> T applyToMarshallable(@NotNull
                                 @NotNull Function<WireIn,T> marshallableReader)

Specified by:

applyToMarshallable in interface ValueIn

isTyped

public boolean isTyped()

Specified by:

isTyped in interface ValueIn

typedMarshallable

@Nullable
public <T> T typedMarshallable()
                                  throws net.openhft.chronicle.core.io.IORuntimeException,
                                         net.openhft.chronicle.core.io.InvalidMarshallableException

Specified by:

typedMarshallable in interface ValueIn

Throws:

net.openhft.chronicle.core.io.IORuntimeException

net.openhft.chronicle.core.io.InvalidMarshallableException

typedMarshallable0

@Nullable
protected <T> T typedMarshallable0()
                                      throws net.openhft.chronicle.core.io.InvalidMarshallableException

Throws:

net.openhft.chronicle.core.io.InvalidMarshallableException

updateAlias

@NotNull
protected <T> T updateAlias()
                              throws net.openhft.chronicle.core.io.InvalidMarshallableException

Throws:

net.openhft.chronicle.core.io.InvalidMarshallableException

anchor

@NotNull
protected <T> T anchor()
                         throws net.openhft.chronicle.core.io.InvalidMarshallableException

Throws:

net.openhft.chronicle.core.io.InvalidMarshallableException

typedMarshallable

@Nullable
public <T> T typedMarshallable(@NotNull
                                         @NotNull Function<Class,ReadMarshallable> marshallableFunction)
                                  throws net.openhft.chronicle.core.io.IORuntimeException,
                                         net.openhft.chronicle.core.io.InvalidMarshallableException

Specified by:

typedMarshallable in interface ValueIn

Throws:

net.openhft.chronicle.core.io.IORuntimeException

net.openhft.chronicle.core.io.InvalidMarshallableException

typePrefix

public Class typePrefix()

Specified by:

typePrefix in interface ValueIn

typePrefixOrObject

public Object typePrefixOrObject(Class tClass)

Description copied from interface: ValueIn

read a class with a super class or actual class as a hint

Specified by:

typePrefixOrObject in interface ValueIn

Parameters:

tClass - the super-class, or actual class to use

Returns:

the class or an instance of an object to use.

typePrefix

@NotNull
public <T> @NotNull ValueIn typePrefix(T t,
                                                @NotNull
                                                @NotNull BiConsumer<T,CharSequence> ts)

Specified by:

typePrefix in interface ValueIn

typeLiteralAsText

@NotNull
public <T> @NotNull WireIn typeLiteralAsText(T t,
                                                      @NotNull
                                                      @NotNull BiConsumer<T,CharSequence> classNameConsumer)

Specified by:

typeLiteralAsText in interface ValueIn

classLookup

public net.openhft.chronicle.core.pool.ClassLookup classLookup()

Specified by:

classLookup in interface ValueIn

typeLiteral

public Type typeLiteral(BiFunction<CharSequence,ClassNotFoundException,Type> unresolvedHandler)

Specified by:

typeLiteral in interface ValueIn

marshallable

public boolean marshallable(@NotNull
                            @NotNull ReadMarshallable object)
                     throws BufferUnderflowException,
                            net.openhft.chronicle.core.io.IORuntimeException,
                            net.openhft.chronicle.core.io.InvalidMarshallableException

Specified by:

marshallable in interface ValueIn

Throws:

BufferUnderflowException

net.openhft.chronicle.core.io.IORuntimeException

net.openhft.chronicle.core.io.InvalidMarshallableException

marshallable

public boolean marshallable(@NotNull
                            @NotNull ReadMarshallable object,
                            boolean overwrite)
                     throws BufferUnderflowException,
                            net.openhft.chronicle.core.io.IORuntimeException,
                            net.openhft.chronicle.core.io.InvalidMarshallableException

Throws:

BufferUnderflowException

net.openhft.chronicle.core.io.IORuntimeException

net.openhft.chronicle.core.io.InvalidMarshallableException

isNull

public boolean isNull()

Specified by:

isNull in interface ValueIn

marshallable

@Nullable
public @Nullable Object marshallable(@NotNull
                                               @NotNull Object object,
                                               @NotNull
                                               @NotNull SerializationStrategy strategy)
                                        throws BufferUnderflowException,
                                               net.openhft.chronicle.core.io.IORuntimeException,
                                               net.openhft.chronicle.core.io.InvalidMarshallableException

Specified by:

marshallable in interface ValueIn

Throws:

BufferUnderflowException

net.openhft.chronicle.core.io.IORuntimeException

net.openhft.chronicle.core.io.InvalidMarshallableException

demarshallable

@Nullable
public @Nullable Demarshallable demarshallable(@NotNull
                                                         @NotNull Class clazz)
                                                  throws BufferUnderflowException,
                                                         net.openhft.chronicle.core.io.IORuntimeException

Throws:

BufferUnderflowException

net.openhft.chronicle.core.io.IORuntimeException

bool

public boolean bool()
             throws net.openhft.chronicle.core.io.IORuntimeException

Specified by:

bool in interface ValueIn

Throws:

net.openhft.chronicle.core.io.IORuntimeException

int8

public byte int8()

Specified by:

int8 in interface ValueIn

int16

public short int16()

Specified by:

int16 in interface ValueIn

uint16

public int uint16()

Specified by:

uint16 in interface ValueIn

float32

public float float32()

Specified by:

float32 in interface ValueIn

int32

public int int32()

Specified by:

int32 in interface ValueIn

int64

public long int64()

Specified by:

int64 in interface ValueIn

float64

public double float64()

Specified by:

float64 in interface ValueIn

Returns:

the value as a float, or -0.0 indicates that we have not been able to parse this data ( we don't throw an exception )

objectWithInferredType

public Object objectWithInferredType(Object using,
                                     @NotNull
                                     @NotNull SerializationStrategy strategy,
                                     Class type)
                              throws net.openhft.chronicle.core.io.InvalidMarshallableException

Specified by:

objectWithInferredType in interface ValueIn

Throws:

net.openhft.chronicle.core.io.InvalidMarshallableException