com.sleepycat.je.rep.impl

Class RepGroupDB.NodeBinding

java.lang.Object

com.sleepycat.bind.tuple.TupleBase<E>

com.sleepycat.bind.tuple.TupleBinding<RepNodeImpl>

com.sleepycat.je.rep.impl.RepGroupDB.NodeBinding

All Implemented Interfaces:

EntryBinding<RepNodeImpl>

Enclosing class:

RepGroupDB

public static class RepGroupDB.NodeBinding
extends TupleBinding<RepNodeImpl>

Supports the serialization/deserialization of node info into and out of the database. Nodes are always saved using the current group format version, and the node's format version is checked on reading to make sure it is not newer than the current group format version, although they could have an older format version if they have not been saved recently.

Prior to RepGroupImpl version 3, the second field was always the ordinal value of the node type, which was either 0 or 1. Starting with version 3, values greater than 1 are treated as the rep group version of the format used to write the node binding, with the node type following in the next field, and the jeVersion field added at the end.

Constructor Summary

Constructors

Constructor and Description
NodeBinding(int groupFormatVersion) Create an instance for reading or writing using the specified group format version.

Method Summary

Modifier and Type	Method and Description
RepNodeImpl	entryToObject(TupleInput input) Constructs a key or data object from a TupleInput entry.
void	objectToEntry(RepNodeImpl mi, TupleOutput output) Converts a key or data object to a tuple entry.
static boolean	supportsObjectToEntry(RepNodeImpl node, int groupFormatVersion) Returns whether the node can be serialized using the specified group format version.

Methods inherited from class com.sleepycat.bind.tuple.TupleBinding

entryToObject, getPrimitiveBinding, objectToEntry

Methods inherited from class com.sleepycat.bind.tuple.TupleBase

entryToInput, getTupleBufferSize, getTupleOutput, inputToEntry, newOutput, newOutput, outputToEntry, setTupleBufferSize

Methods inherited from class java.lang.Object

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

Constructor Detail

NodeBinding

public NodeBinding(int groupFormatVersion)

Create an instance for reading or writing using the specified group format version.

Method Detail

entryToObject

public RepNodeImpl entryToObject(TupleInput input)

Description copied from class: TupleBinding

Constructs a key or data object from a TupleInput entry.

Specified by:

entryToObject in class TupleBinding<RepNodeImpl>

Parameters:

input - is the tuple key or data entry.

Returns:

the key or data object constructed from the entry.

supportsObjectToEntry

public static boolean supportsObjectToEntry(RepNodeImpl node,
                                            int groupFormatVersion)

Returns whether the node can be serialized using the specified group format version.

objectToEntry

public void objectToEntry(RepNodeImpl mi,
                          TupleOutput output)

Description copied from class: TupleBinding

Converts a key or data object to a tuple entry.

Specified by:

objectToEntry in class TupleBinding<RepNodeImpl>

Parameters:

mi - is the key or data object.

output - is the tuple entry to which the key or data should be written.