org.mmbase.storage.database
Class OODatabaseStorage

java.lang.Object
  |
  +--org.mmbase.storage.database.Support2Storage
        |
        +--org.mmbase.storage.database.AbstractDatabaseStorage
              |
              +--org.mmbase.storage.database.SQL92DatabaseStorage
                    |
                    +--org.mmbase.storage.database.OODatabaseStorage

All Implemented Interfaces:

DatabaseStorage, MMJdbc2NodeInterface, Storage

public class OODatabaseStorage

extends SQL92DatabaseStorage

implements DatabaseStorage

OODatabaseStorage implements the DatabaseStorage interface and the MMJdbc2NodeInterface for an objectoriented database (i.e. Postgresql). It overrides the methods for storing and retrieving huge texts and bytefields, and the methods for determining database key (for the object 'number' field).

Since:

MMBase-1.6

Version:

$Id: OODatabaseStorage.java,v 1.2 2002/11/07 12:30:38 pierre Exp $

Author:

Pierre van Rooden

Fields inherited from class org.mmbase.storage.database.AbstractDatabaseStorage

mmb

Fields inherited from interface org.mmbase.storage.database.DatabaseStorage

KEY_FOREIGN, KEY_NONE, KEY_NOTNULL, KEY_PRIMARY, KEY_SECONDARY

Constructor Summary

OODatabaseStorage()

Method Summary

int	createKey(Transaction trans) Gives an unique number for a node to be inserted.
byte[]	getBytes(java.lang.String tableName, java.lang.String fieldname, int number) Get bytes from blob
byte[]	getDBByte(java.sql.ResultSet rs, int idx) is next function nessecary?
java.lang.String	getDBText(java.sql.ResultSet rs, int idx) is next function nessecary?
protected java.lang.String	getText(java.lang.String tableName, java.lang.String fieldname, int number) Get text from blob
protected void	prepare() Prepares the database layer.
void	setDBByte(int i, java.sql.PreparedStatement stmt, byte[] bytes) is next function nessecary?
void	setDBText(int i, java.sql.PreparedStatement stmt, java.lang.String body) Set text array in database

Methods inherited from class org.mmbase.storage.database.SQL92DatabaseStorage

addField, applyCreateScheme, changeField, commit, commitToTable, create, created, created, createObjectStorage, createSQL, delete, deleteFromTable, deleteSQL, drop, dropSQL, getBytes, getFieldsOrderCreate, getNode, getNodeType, getParentBuilder, getParentTableName, getText, init, insert, insertIntoTable, insertSQL, isAllowedParentBuilder, isParentField, loadExistingTables, loadFieldFromTable, loadSupportInformation, readBytesFromFile, removeField, selectSQL, setValuePreparedStatement, size, size, supportsExtendedTables, supportsRollback, updateSQL, updateStorage, writeBytesToFile

Methods inherited from class org.mmbase.storage.database.AbstractDatabaseStorage

applyForeignKeyScheme, applyKeyScheme, applyNotNullScheme, applyPrimaryKeyScheme, applyScheme, commit, constructFieldDefinition, constructFieldDefinition, create, createDatabaseTransaction, createDatabaseTransaction, createKey, createObjectStorage, createSQL, createTransaction, delete, deployDatabaseDocument, getBinaryFilePath, getCreateExtendedScheme, getCreateScheme, getFieldNameMap, getForeignKeyScheme, getFullTableName, getJDBC, getKeyScheme, getMaxDropSize, getNode, getNodeType, getNotNullScheme, getNumberString, getPrimaryKeyScheme, getStoreBinaryAsFile, getTypeMap, insert, mapToMMBaseFieldName, mapToTableFieldName, matchType, registerChanged, registerParentBuilder, selectSQL, selectSQL, selectSQL, setBinaryFilePath, setCreateExtendedScheme, setCreateScheme, setFieldNameMap, setForeignKeyScheme, setKeyScheme, setMaxDropSize, setNotNullScheme, setPrimaryKeyScheme, setStoreBinaryAsFile, setTypeMap

Methods inherited from class org.mmbase.storage.database.Support2Storage

commit, createObjectTable, decodeDBnodeField, decodeDBnodeField, getAllowedField, getConnection, getDBKey, getDisallowedField, getMMNodeSearch2SQL, getOTypeString, getOwnerString, getShortedByte, getShortedText, insert, removeNode, updateTable

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mmbase.storage.database.DatabaseStorage

deployDatabaseDocument, getBinaryFilePath, getCreateExtendedScheme, getCreateScheme, getFieldNameMap, getForeignKeyScheme, getJDBC, getKeyScheme, getMaxDropSize, getNotNullScheme, getPrimaryKeyScheme, getStoreBinaryAsFile, getTypeMap, init, loadFieldFromTable, mapToMMBaseFieldName, mapToTableFieldName, registerChanged, setBinaryFilePath, setCreateExtendedScheme, setCreateScheme, setFieldNameMap, setForeignKeyScheme, setKeyScheme, setMaxDropSize, setNotNullScheme, setPrimaryKeyScheme, setStoreBinaryAsFile, setTypeMap, setValuePreparedStatement, supportsExtendedTables

Methods inherited from interface org.mmbase.storage.Storage

addField, changeField, commit, commit, create, create, created, createKey, createObjectStorage, createObjectStorage, createTransaction, delete, delete, drop, getBytes, getNode, getNode, getNodeType, getNodeType, getText, insert, insert, isAllowedParentBuilder, registerParentBuilder, removeField, size, supportsRollback, updateStorage

Constructor Detail

OODatabaseStorage

public OODatabaseStorage()

Method Detail

getText

protected java.lang.String getText(java.lang.String tableName,
                                   java.lang.String fieldname,
                                   int number)

Get text from blob

Overrides:

getText in class SQL92DatabaseStorage

getBytes

public byte[] getBytes(java.lang.String tableName,
                       java.lang.String fieldname,
                       int number)

Get bytes from blob

Overrides:

getBytes in class SQL92DatabaseStorage

prepare

protected void prepare()

Description copied from class: SQL92DatabaseStorage

Prepares the database layer. Override this method if you need to make preparations for your database.

Overrides:

prepare in class SQL92DatabaseStorage

createKey

public int createKey(Transaction trans)
              throws StorageException

Gives an unique number for a node to be inserted. This method will work with multiple mmbases

Specified by:

createKey in interface Storage

Overrides:

createKey in class AbstractDatabaseStorage

Parameters:

trans - the transaction to use for obtaining the key

Returns:

unique number

Throws:

StorageException - if an error occurred while obtaining the key

getDBByte

public byte[] getDBByte(java.sql.ResultSet rs,
                        int idx)

is next function nessecary?

Overrides:

getDBByte in class Support2Storage

setDBByte

public void setDBByte(int i,
                      java.sql.PreparedStatement stmt,
                      byte[] bytes)

is next function nessecary?

Overrides:

setDBByte in class AbstractDatabaseStorage

getDBText

public java.lang.String getDBText(java.sql.ResultSet rs,
                                  int idx)

is next function nessecary?

Overrides:

getDBText in class Support2Storage

setDBText

public void setDBText(int i,
                      java.sql.PreparedStatement stmt,
                      java.lang.String body)

Set text array in database

Overrides:

setDBText in class AbstractDatabaseStorage