org.apache.directory.server.core.partition.impl.btree.jdbm

Class EntrySerializer

java.lang.Object

org.apache.directory.server.core.partition.impl.btree.jdbm.EntrySerializer

All Implemented Interfaces:

java.io.Serializable, jdbm.helper.Serializer

public class EntrySerializer
extends java.lang.Object
implements jdbm.helper.Serializer

Serialize and deserialize a ServerEntry. There is a big difference with the standard Entry serialization : we don't serialize the entry's Dn, we just serialize it's Rdn.

This class must *not* be used outside of the server.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private static boolean	IS_DEBUG Speedup for logs
private static org.slf4j.Logger	LOG the logger for this class
private org.apache.directory.api.ldap.model.schema.SchemaManager	schemaManager The schemaManager reference
private static long	serialVersionUID The serialVersionUID

Constructor Summary

Constructors

Constructor and Description
EntrySerializer(org.apache.directory.api.ldap.model.schema.SchemaManager schemaManager) Creates a new instance of ServerEntrySerializer.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	deserialize(byte[] bytes) Deserialize a Entry.
byte[]	serialize(java.lang.Object object) This is the place where we serialize entries, and all theirs elements.

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

The serialVersionUID

See Also:

Constant Field Values

LOG

private static final org.slf4j.Logger LOG

the logger for this class

IS_DEBUG

private static final boolean IS_DEBUG

Speedup for logs

schemaManager

private transient org.apache.directory.api.ldap.model.schema.SchemaManager schemaManager

The schemaManager reference

Constructor Detail

EntrySerializer

public EntrySerializer(org.apache.directory.api.ldap.model.schema.SchemaManager schemaManager)

Creates a new instance of ServerEntrySerializer.

Parameters:

schemaManager - The reference to the global schemaManager

Method Detail

serialize

public byte[] serialize(java.lang.Object object)
                 throws java.io.IOException

This is the place where we serialize entries, and all theirs elements. the reason why we don't call the underlying methods (ServerAttribute.write(), Value.write()) is that we need access to the registries to read back the values.

The structure used to store the entry is the following :

• [a byte] : if the Dn is empty 0 will be written else 1
• [Rdn] : The entry's Rdn.
• [numberAttr] : the bumber of attributes. Can be 0
• For each Attribute :
  • [attribute's oid] : The attribute's OID to get back the attributeType on deserialization
  • [Attribute] The attribute

Specified by:

serialize in interface jdbm.helper.Serializer

Throws:

java.io.IOException

deserialize

public java.lang.Object deserialize(byte[] bytes)
                             throws java.io.IOException

Deserialize a Entry.

Specified by:

deserialize in interface jdbm.helper.Serializer

Parameters:

bytes - the byte array containing the serialized entry

Returns:

An instance of a Entry object

Throws:

java.io.IOException - if we can't deserialize the Entry