com.syncbuilder.storage
Class DatabaseImpl

java.lang.Object
  |
  +--com.syncbuilder.storage.DatabaseImpl

Direct Known Subclasses:

DatabaseImpl, DatabaseImpl, DatabaseImpl, DatabaseImpl, DatabaseImpl, DatabaseImpl, DatabaseImpl

public abstract class DatabaseImpl

extends java.lang.Object

DatabaseImpl is a helper class for specializations of Database. It implements all the operations which are application-specific. It is subclassed by several application-specific implementations.

See Also:

Database, DatabaseBase

Constructor Summary

DatabaseImpl()

Method Summary

AppBlock	createAppBlock()
AppBlock	createAppBlock(byte[] contents)
Pref	createPref(byte[] contents, int id, int version, boolean backed_up)
abstract Record	createRecord()
abstract Record	createRecord(byte[] contents, RecordID id, int index, int attr, int cat)
Record	createRecord(RecordID id)
Resource	createResource()
Resource	createResource(byte[] contents, Char4 type, int id, int index)
Resource	createResource(Char4 type, int id)
SortBlock	createSortBlock()
SortBlock	createSortBlock(byte[] contents)
abstract Char4	getCreatorID() Get the creator ID of the database.
abstract java.lang.String	getDBName() Get the name of the database.
abstract Char4	getType() Get the type of the database.

Methods inherited from class java.lang.Object

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

Constructor Detail

DatabaseImpl

public DatabaseImpl()

Method Detail

createRecord

public abstract Record createRecord()

createRecord

public Record createRecord(RecordID id)

createRecord

public abstract Record createRecord(byte[] contents,
                                    RecordID id,
                                    int index,
                                    int attr,
                                    int cat)

createResource

public Resource createResource()

createResource

public Resource createResource(Char4 type,
                               int id)

createResource

public Resource createResource(byte[] contents,
                               Char4 type,
                               int id,
                               int index)

createPref

public Pref createPref(byte[] contents,
                       int id,
                       int version,
                       boolean backed_up)
                throws NoCreatorException

createAppBlock

public AppBlock createAppBlock()

createSortBlock

public SortBlock createSortBlock()

createAppBlock

public AppBlock createAppBlock(byte[] contents)

createSortBlock

public SortBlock createSortBlock(byte[] contents)

getCreatorID

public abstract Char4 getCreatorID()

Get the creator ID of the database. The creator ID is a unique four-letter ID which is used to link a database to the application which created it.

getDBName

public abstract java.lang.String getDBName()

Get the name of the database. The name can have up to 31 characters.

getType

public abstract Char4 getType()

Get the type of the database. The type is a four-letter ID which is used to describe the type of database, e.g. 'DATA'. It is non-essential, unless you want to create a new database.