Package org.apache.cassandra.utils.bytecomparable

Class ByteSource.VariableLengthUnsignedInteger

java.lang.Object

org.apache.cassandra.utils.bytecomparable.ByteSource.VariableLengthUnsignedInteger

All Implemented Interfaces:

ByteSource

Enclosing interface:

ByteSource

public static class ByteSource.VariableLengthUnsignedInteger
extends Object
implements ByteSource

Variable-length encoding for unsigned integers. The encoding is similar to UTF-8 encoding. Numbers between 0 and 127 are encoded in one byte, using 0 in the most significant bit. Larger values have 1s in as many of the most significant bits as the number of additional bytes in the representation, followed by a 0. This ensures that longer numbers compare larger than shorter ones. Since we never use a longer representation than necessary, this implies numbers compare correctly. As the number of bytes is specified in the bits of the first, no value is a prefix of another.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.cassandra.utils.bytecomparable.ByteSource

ByteSource.AbstractEscaper, ByteSource.AccessorEscaper<V>, ByteSource.ArrayEscaper, ByteSource.BufferEscaper, ByteSource.MemoryEscaper, ByteSource.Multi, ByteSource.Number, ByteSource.Peekable, ByteSource.Separator, ByteSource.SignedFixedLengthFloat<V>, ByteSource.SignedFixedLengthNumber<V>, ByteSource.VariableLengthInteger, ByteSource.VariableLengthUnsignedInteger

Field Summary

Fields inherited from interface org.apache.cassandra.utils.bytecomparable.ByteSource

EMPTY, END_OF_STREAM, ESCAPE, ESCAPED_0_CONT, ESCAPED_0_DONE, EXCLUDED, GT_NEXT_COMPONENT, GTGT_NEXT_COMPONENT, LT_NEXT_COMPONENT, LTLT_NEXT_COMPONENT, MAX_NEXT_COMPONENT, MAX_SEPARATOR, MIN_NEXT_COMPONENT, MIN_SEPARATOR, NEXT_COMPONENT, NEXT_COMPONENT_EMPTY, NEXT_COMPONENT_EMPTY_REVERSED, NEXT_COMPONENT_NULL, TERMINATOR

Constructor Summary

Constructors

Constructor	Description
VariableLengthUnsignedInteger(long value)

Method Summary

Modifier and Type	Method	Description
int	next()	Consume the next byte, unsigned.

Methods inherited from class java.lang.Object

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

Constructor Details

VariableLengthUnsignedInteger

public VariableLengthUnsignedInteger(long value)

Method Details

next

public int next()

Description copied from interface: ByteSource

Consume the next byte, unsigned. Must be between 0 and 255, or END_OF_STREAM if there are no more bytes.

Specified by:

next in interface ByteSource