Package org.apache.cassandra.db.marshal

Class ByteBufferAccessor

java.lang.Object

org.apache.cassandra.db.marshal.ByteBufferAccessor

All Implemented Interfaces:

ValueAccessor<ByteBuffer>

public class ByteBufferAccessor
extends Object
implements ValueAccessor<ByteBuffer>

Accessor for ByteBuffer values. ByteBufferAccessor treates Buffer.position() as index 0, and Buffer.remaining() as the length.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.cassandra.db.marshal.ValueAccessor

ValueAccessor.ObjectFactory<V>

Field Summary

Fields

Modifier and Type	Field	Description
static final ValueAccessor<ByteBuffer>	instance

Method Summary

Modifier and Type	Method	Description
ByteBuffer	allocate(int size)	Allocate and return a instance of bytes on the heap.
<V2> int	compare(ByteBuffer left, V2 right, ValueAccessor<V2> accessorR)	lexicographically compare to
int	compareByteArrayTo(byte[] left, ByteBuffer right)	compare a byte array on the left with a on the right}
int	compareByteBufferTo(ByteBuffer left, ByteBuffer right)	compare a byte buffer on the left with a on the right}
<V2> ByteBuffer	convert(V2 src, ValueAccessor<V2> accessor)	Convert the data in to and the returned value may share a common byte array instance, so caller should assume that modifying the returned value will also modify the contents of
int	copyByteArrayTo(byte[] src, int srcOffset, ByteBuffer dst, int dstOffset, int size)	copies a byte array into this accessors value.
int	copyByteBufferTo(ByteBuffer src, int srcOffset, ByteBuffer dst, int dstOffset, int size)	copies a byte buffer into this accessors value.
<V2> int	copyTo(ByteBuffer src, int srcOffset, V2 dst, ValueAccessor<V2> dstAccessor, int dstOffset, int size)	copy the bytes from the value, starting at the offset into the value, starting at the offset , using the accessor
ByteBuffer[]	createArray(int length)	allocate an instance of the accessors backing type
void	digest(ByteBuffer value, int offset, int size, Digest digest)	updates with bytes from the contents of starting at offset
ByteBuffer	empty()	return a value with a length of 0
ValueAccessor.ObjectFactory<ByteBuffer>	factory()	returns the ValueAccessor.ObjectFactory for the backing type
byte	getByte(ByteBuffer value, int offset)	returns a byte from offset
double	getDouble(ByteBuffer value, int offset)
float	getFloat(ByteBuffer value, int offset)
int	getInt(ByteBuffer value, int offset)	returns an int from offset
long	getLong(ByteBuffer value, int offset)	returns a long from offset
short	getShort(ByteBuffer value, int offset)	returns a short from offset
int	getUnsignedShort(ByteBuffer value, int offset)	returns an unsigned short from offset
int	putByte(ByteBuffer dst, int offset, byte value)	writes the byte value to at offset
int	putFloat(ByteBuffer dst, int offset, float value)	writes the float value to at offset
int	putInt(ByteBuffer dst, int offset, int value)	writes the int value to at offset
int	putLong(ByteBuffer dst, int offset, long value)	writes the long value to at offset
int	putShort(ByteBuffer dst, int offset, short value)	writes the short value to at offset
ByteBuffer	read(DataInputPlus in, int length)	Reads a value of bytes from
int	size(ByteBuffer value)
ByteBuffer	slice(ByteBuffer input, int offset, int length)	Returns a value with the contents of from to .
byte[]	toArray(ByteBuffer value)	returns a byte[] with the contents of Depending on the accessor implementation, this method may: * allocate a new byte[] object and copy data into it * return the value, if the backing type is byte[]
byte[]	toArray(ByteBuffer value, int offset, int length)	returns a byte[] with bytes copied from the contents of starting at offset .
Ballot	toBallot(ByteBuffer value)	returns a TimeUUID from offset 0
ByteBuffer	toBuffer(ByteBuffer value)	returns a ByteBuffer with the contents of Depending on the accessor implementation, this method may: * allocate a new ByteBuffer and copy data into it * return the value, if the backing type is a bytebuffer
byte	toByte(ByteBuffer value)	returns a byte from offset 0
double	toDouble(ByteBuffer value)	returns a double from offset 0
float	toFloat(ByteBuffer value)	returns a float from offset 0
float[]	toFloatArray(ByteBuffer value, int dimension)	returns a float[] from offset 0
String	toHex(ByteBuffer value)
int	toInt(ByteBuffer value)	returns an int from offset 0
long	toLong(ByteBuffer value)	returns a long from offset 0
short	toShort(ByteBuffer value)	returns a short from offset 0
String	toString(ByteBuffer value, Charset charset)
TimeUUID	toTimeUUID(ByteBuffer value)	returns a TimeUUID from offset 0
UUID	toUUID(ByteBuffer value)	returns a UUID from offset 0
ByteBuffer	valueOf(boolean v)	return a value with the bytes from
ByteBuffer	valueOf(byte v)	return a value with the bytes from
ByteBuffer	valueOf(byte[] bytes)	return a value containing the Caller should assume that modifying the returned value will also modify the contents of
ByteBuffer	valueOf(double v)	return a value with the bytes from
ByteBuffer	valueOf(float v)	return a value with the bytes from
ByteBuffer	valueOf(int v)	return a value with the bytes from
ByteBuffer	valueOf(long v)	return a value with the bytes from
ByteBuffer	valueOf(short v)	return a value with the bytes from
ByteBuffer	valueOf(String v, Charset charset)	return a value containing the bytes for the given string and charset
ByteBuffer	valueOf(ByteBuffer bytes)	return a value containing the and the returned value may share a common byte array instance, so caller should assume that modifying the returned value will also modify the contents of
ByteBuffer	valueOf(UUID v)	return a value with the bytes from
void	write(ByteBuffer value, ByteBuffer out)	Write the contents of the given value into the ByteBuffer
void	write(ByteBuffer value, DataOutputPlus out)	Write the contents of the given value into the a DataOutputPlus

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.db.marshal.ValueAccessor

digest, getBoolean, getUnsignedVInt, getUnsignedVInt32, getVInt, getVInt32, hashCode, isEmpty, isEmptyFromOffset, putBytes, putBytes, putUnsignedVInt, putUnsignedVInt32, putVInt, putVInt32, remaining, sizeFromOffset, sizeWithShortLength, sizeWithVIntLength, sliceWithShortLength, toString, writeWithVIntLength

Field Details

instance

public static final ValueAccessor<ByteBuffer> instance

Method Details

size

public int size(ByteBuffer value)

Specified by:

size in interface ValueAccessor<ByteBuffer>

Returns:

the size of the given value

createArray

public ByteBuffer[] createArray(int length)

Description copied from interface: ValueAccessor

allocate an instance of the accessors backing type

Specified by:

createArray in interface ValueAccessor<ByteBuffer>

Parameters:

length - size of backing typ to allocate

write

public void write(ByteBuffer value,
 DataOutputPlus out)
           throws IOException

Description copied from interface: ValueAccessor

Write the contents of the given value into the a DataOutputPlus

Specified by:

write in interface ValueAccessor<ByteBuffer>

Throws:

IOException

write

public void write(ByteBuffer value,
 ByteBuffer out)

Description copied from interface: ValueAccessor

Write the contents of the given value into the ByteBuffer

Specified by:

write in interface ValueAccessor<ByteBuffer>

copyTo

public <V2> int copyTo(ByteBuffer src,
 int srcOffset,
 V2 dst,
 ValueAccessor<V2> dstAccessor,
 int dstOffset,
 int size)

Description copied from interface: ValueAccessor

copy the bytes from the value, starting at the offset into the value, starting at the offset , using the accessor

Specified by:

copyTo in interface ValueAccessor<ByteBuffer>

Type Parameters:

V2 - the destination value type

Returns:

the number of bytes copied ()

copyByteArrayTo

public int copyByteArrayTo(byte[] src,
 int srcOffset,
 ByteBuffer dst,
 int dstOffset,
 int size)

Description copied from interface: ValueAccessor

copies a byte array into this accessors value.

Specified by:

copyByteArrayTo in interface ValueAccessor<ByteBuffer>

copyByteBufferTo

public int copyByteBufferTo(ByteBuffer src,
 int srcOffset,
 ByteBuffer dst,
 int dstOffset,
 int size)

Description copied from interface: ValueAccessor

copies a byte buffer into this accessors value.

Specified by:

copyByteBufferTo in interface ValueAccessor<ByteBuffer>

digest

public void digest(ByteBuffer value,
 int offset,
 int size,
 Digest digest)

Description copied from interface: ValueAccessor

updates with bytes from the contents of starting at offset

Specified by:

digest in interface ValueAccessor<ByteBuffer>

read

public ByteBuffer read(DataInputPlus in,
 int length)
                throws IOException

Description copied from interface: ValueAccessor

Reads a value of bytes from

Specified by:

read in interface ValueAccessor<ByteBuffer>

Throws:

IOException

slice

public ByteBuffer slice(ByteBuffer input,
 int offset,
 int length)

Description copied from interface: ValueAccessor

Returns a value with the contents of from to . Depending on the accessor implementation, this method may: * allocate a new object of , and copy data into it * return a view of where changes to one will be reflected in the other

Specified by:

slice in interface ValueAccessor<ByteBuffer>

compare

public <V2> int compare(ByteBuffer left,
 V2 right,
 ValueAccessor<V2> accessorR)

Description copied from interface: ValueAccessor

lexicographically compare to

Specified by:

compare in interface ValueAccessor<ByteBuffer>

Type Parameters:

V2 - backing type of

compareByteArrayTo

public int compareByteArrayTo(byte[] left,
 ByteBuffer right)

Description copied from interface: ValueAccessor

compare a byte array on the left with a on the right}

Specified by:

compareByteArrayTo in interface ValueAccessor<ByteBuffer>

compareByteBufferTo

public int compareByteBufferTo(ByteBuffer left,
 ByteBuffer right)

Description copied from interface: ValueAccessor

compare a byte buffer on the left with a on the right}

Specified by:

compareByteBufferTo in interface ValueAccessor<ByteBuffer>

toBuffer

public ByteBuffer toBuffer(ByteBuffer value)

Description copied from interface: ValueAccessor

returns a ByteBuffer with the contents of Depending on the accessor implementation, this method may: * allocate a new ByteBuffer and copy data into it * return the value, if the backing type is a bytebuffer

Specified by:

toBuffer in interface ValueAccessor<ByteBuffer>

toArray

public byte[] toArray(ByteBuffer value)

Description copied from interface: ValueAccessor

returns a byte[] with the contents of Depending on the accessor implementation, this method may: * allocate a new byte[] object and copy data into it * return the value, if the backing type is byte[]

Specified by:

toArray in interface ValueAccessor<ByteBuffer>

toArray

public byte[] toArray(ByteBuffer value,
 int offset,
 int length)

Description copied from interface: ValueAccessor

returns a byte[] with bytes copied from the contents of starting at offset . Depending on the accessor implementation, this method may: * allocate a new byte[] object and copy data into it * return the value, if the backing type is byte[], offset is 0 and == size(value)

Specified by:

toArray in interface ValueAccessor<ByteBuffer>

toString

public String toString(ByteBuffer value,
 Charset charset)
                throws CharacterCodingException

Specified by:

toString in interface ValueAccessor<ByteBuffer>

Throws:

CharacterCodingException

valueOf

public ByteBuffer valueOf(UUID v)

Description copied from interface: ValueAccessor

return a value with the bytes from

Specified by:

valueOf in interface ValueAccessor<ByteBuffer>

toHex

public String toHex(ByteBuffer value)

Specified by:

toHex in interface ValueAccessor<ByteBuffer>

toByte

public byte toByte(ByteBuffer value)

Description copied from interface: ValueAccessor

returns a byte from offset 0

Specified by:

toByte in interface ValueAccessor<ByteBuffer>

getByte

public byte getByte(ByteBuffer value,
 int offset)

Description copied from interface: ValueAccessor

returns a byte from offset

Specified by:

getByte in interface ValueAccessor<ByteBuffer>

toShort

public short toShort(ByteBuffer value)

Description copied from interface: ValueAccessor

returns a short from offset 0

Specified by:

toShort in interface ValueAccessor<ByteBuffer>

getShort

public short getShort(ByteBuffer value,
 int offset)

Description copied from interface: ValueAccessor

returns a short from offset

Specified by:

getShort in interface ValueAccessor<ByteBuffer>

getUnsignedShort

public int getUnsignedShort(ByteBuffer value,
 int offset)

Description copied from interface: ValueAccessor

returns an unsigned short from offset

Specified by:

getUnsignedShort in interface ValueAccessor<ByteBuffer>

toInt

public int toInt(ByteBuffer value)

Description copied from interface: ValueAccessor

returns an int from offset 0

Specified by:

toInt in interface ValueAccessor<ByteBuffer>

getInt

public int getInt(ByteBuffer value,
 int offset)

Description copied from interface: ValueAccessor

returns an int from offset

Specified by:

getInt in interface ValueAccessor<ByteBuffer>

getFloat

public float getFloat(ByteBuffer value,
 int offset)

Specified by:

getFloat in interface ValueAccessor<ByteBuffer>

getDouble

public double getDouble(ByteBuffer value,
 int offset)

Specified by:

getDouble in interface ValueAccessor<ByteBuffer>

toLong

public long toLong(ByteBuffer value)

Description copied from interface: ValueAccessor

returns a long from offset 0

Specified by:

toLong in interface ValueAccessor<ByteBuffer>

getLong

public long getLong(ByteBuffer value,
 int offset)

Description copied from interface: ValueAccessor

returns a long from offset

Specified by:

getLong in interface ValueAccessor<ByteBuffer>

toFloat

public float toFloat(ByteBuffer value)

Description copied from interface: ValueAccessor

returns a float from offset 0

Specified by:

toFloat in interface ValueAccessor<ByteBuffer>

toFloatArray

public float[] toFloatArray(ByteBuffer value,
 int dimension)

Description copied from interface: ValueAccessor

returns a float[] from offset 0

Specified by:

toFloatArray in interface ValueAccessor<ByteBuffer>

toDouble

public double toDouble(ByteBuffer value)

Description copied from interface: ValueAccessor

returns a double from offset 0

Specified by:

toDouble in interface ValueAccessor<ByteBuffer>

toUUID

public UUID toUUID(ByteBuffer value)

Description copied from interface: ValueAccessor

returns a UUID from offset 0

Specified by:

toUUID in interface ValueAccessor<ByteBuffer>

toTimeUUID

public TimeUUID toTimeUUID(ByteBuffer value)

Description copied from interface: ValueAccessor

returns a TimeUUID from offset 0

Specified by:

toTimeUUID in interface ValueAccessor<ByteBuffer>

toBallot

public Ballot toBallot(ByteBuffer value)

Description copied from interface: ValueAccessor

returns a TimeUUID from offset 0

Specified by:

toBallot in interface ValueAccessor<ByteBuffer>

putByte

public int putByte(ByteBuffer dst,
 int offset,
 byte value)

Description copied from interface: ValueAccessor

writes the byte value to at offset

Specified by:

putByte in interface ValueAccessor<ByteBuffer>

Returns:

the number of bytes written to

putShort

public int putShort(ByteBuffer dst,
 int offset,
 short value)

Description copied from interface: ValueAccessor

writes the short value to at offset

Specified by:

putShort in interface ValueAccessor<ByteBuffer>

Returns:

the number of bytes written to

putInt

public int putInt(ByteBuffer dst,
 int offset,
 int value)

Description copied from interface: ValueAccessor

writes the int value to at offset

Specified by:

putInt in interface ValueAccessor<ByteBuffer>

Returns:

the number of bytes written to

putLong

public int putLong(ByteBuffer dst,
 int offset,
 long value)

Description copied from interface: ValueAccessor

writes the long value to at offset

Specified by:

putLong in interface ValueAccessor<ByteBuffer>

Returns:

the number of bytes written to

putFloat

public int putFloat(ByteBuffer dst,
 int offset,
 float value)

Description copied from interface: ValueAccessor

writes the float value to at offset

Specified by:

putFloat in interface ValueAccessor<ByteBuffer>

Returns:

the number of bytes written to

empty

public ByteBuffer empty()

Description copied from interface: ValueAccessor

return a value with a length of 0

Specified by:

empty in interface ValueAccessor<ByteBuffer>

valueOf

public ByteBuffer valueOf(byte[] bytes)

Description copied from interface: ValueAccessor

return a value containing the Caller should assume that modifying the returned value will also modify the contents of

Specified by:

valueOf in interface ValueAccessor<ByteBuffer>

valueOf

public ByteBuffer valueOf(ByteBuffer bytes)

Description copied from interface: ValueAccessor

return a value containing the and the returned value may share a common byte array instance, so caller should assume that modifying the returned value will also modify the contents of

Specified by:

valueOf in interface ValueAccessor<ByteBuffer>

valueOf

public ByteBuffer valueOf(String v,
 Charset charset)

Description copied from interface: ValueAccessor

return a value containing the bytes for the given string and charset

Specified by:

valueOf in interface ValueAccessor<ByteBuffer>

valueOf

public ByteBuffer valueOf(boolean v)

Description copied from interface: ValueAccessor

return a value with the bytes from

Specified by:

valueOf in interface ValueAccessor<ByteBuffer>

valueOf

public ByteBuffer valueOf(byte v)

Description copied from interface: ValueAccessor

return a value with the bytes from

Specified by:

valueOf in interface ValueAccessor<ByteBuffer>

valueOf

public ByteBuffer valueOf(short v)

Description copied from interface: ValueAccessor

return a value with the bytes from

Specified by:

valueOf in interface ValueAccessor<ByteBuffer>

valueOf

public ByteBuffer valueOf(int v)

Description copied from interface: ValueAccessor

return a value with the bytes from

Specified by:

valueOf in interface ValueAccessor<ByteBuffer>

valueOf

public ByteBuffer valueOf(long v)

Description copied from interface: ValueAccessor

return a value with the bytes from

Specified by:

valueOf in interface ValueAccessor<ByteBuffer>

valueOf

public ByteBuffer valueOf(float v)

Description copied from interface: ValueAccessor

return a value with the bytes from

Specified by:

valueOf in interface ValueAccessor<ByteBuffer>

valueOf

public ByteBuffer valueOf(double v)

Description copied from interface: ValueAccessor

return a value with the bytes from

Specified by:

valueOf in interface ValueAccessor<ByteBuffer>

convert

public <V2> ByteBuffer convert(V2 src,
 ValueAccessor<V2> accessor)

Description copied from interface: ValueAccessor

Convert the data in to and the returned value may share a common byte array instance, so caller should assume that modifying the returned value will also modify the contents of

Specified by:

convert in interface ValueAccessor<ByteBuffer>

allocate

public ByteBuffer allocate(int size)

Description copied from interface: ValueAccessor

Allocate and return a instance of bytes on the heap.

Specified by:

allocate in interface ValueAccessor<ByteBuffer>

factory

public ValueAccessor.ObjectFactory<ByteBuffer> factory()

Description copied from interface: ValueAccessor

returns the ValueAccessor.ObjectFactory for the backing type

Specified by:

factory in interface ValueAccessor<ByteBuffer>