net.ontopia.persistence.proxy
Class SQLObjectAccess

java.lang.Object
  net.ontopia.persistence.proxy.SQLObjectAccess

All Implemented Interfaces:

ClassAccessIF

Direct Known Subclasses:

SQLBatchObjectAccess

public class SQLObjectAccess
extends java.lang.Object
implements ClassAccessIF

INTERNAL: Class that performs the task of accessing and manipulating "identifiable object type" instances in the database.

Field Summary

protected RDBMSAccess	access
static int	batchSize
protected ClassInfoIF	cinfo
protected boolean	debug
protected FieldAccessIF[]	faccesses
protected FieldInfoIF	identity_field
protected FieldInfoIF[]	m2m_fields
protected FieldInfoIF[]	o2a_fields
protected FieldInfoIF[]	o2o_fields
protected java.lang.String	sql_create
protected java.lang.String	sql_delete
protected java.lang.String	sql_load
protected FieldInfoIF[]	value_fields

Constructor Summary

SQLObjectAccess(RDBMSAccess access, ClassInfoIF cinfo)

Method Summary

protected void	bindParametersCreate(java.sql.PreparedStatement stm, ObjectAccessIF oaccess, java.lang.Object object)
protected void	bindParametersDelete(java.sql.PreparedStatement stm, IdentityIF identity)
protected void	clearFields(IdentityIF identity)
void	create(ObjectAccessIF oaccess, java.lang.Object object) INTERNAL: Creates the new object in the database.
void	delete(ObjectAccessIF oaccess, java.lang.Object object) INTERNAL: Deletes the object identity from the database.
protected FieldAccessIF	getFieldAccess(int field)
boolean	load(AccessRegistrarIF registrar, IdentityIF identity) INTERNAL: Loads the object identity from the database.
java.lang.Object	loadField(AccessRegistrarIF registrar, IdentityIF identity, int field) INTERNAL: Loads the specified object field for the given identity from the database.
java.lang.Object	loadFieldMultiple(AccessRegistrarIF registrar, java.util.Collection identities, IdentityIF current, int field) INTERNAL: Loads the specified object field for the given identitys from the database.
void	storeDirty(ObjectAccessIF oaccess, java.lang.Object object) INTERNAL: Stores object fields that are dirty in the database.

Methods inherited from class java.lang.Object

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

Field Detail

debug

protected boolean debug

access

protected RDBMSAccess access

cinfo

protected ClassInfoIF cinfo

sql_load

protected java.lang.String sql_load

sql_create

protected java.lang.String sql_create

sql_delete

protected java.lang.String sql_delete

identity_field

protected FieldInfoIF identity_field

value_fields

protected FieldInfoIF[] value_fields

o2o_fields

protected FieldInfoIF[] o2o_fields

o2a_fields

protected FieldInfoIF[] o2a_fields

m2m_fields

protected FieldInfoIF[] m2m_fields

faccesses

protected FieldAccessIF[] faccesses

batchSize

public static int batchSize

Constructor Detail

SQLObjectAccess

public SQLObjectAccess(RDBMSAccess access,
                       ClassInfoIF cinfo)

Method Detail

getFieldAccess

protected FieldAccessIF getFieldAccess(int field)

load

public boolean load(AccessRegistrarIF registrar,
                    IdentityIF identity)
             throws java.lang.Exception

Description copied from interface: ClassAccessIF

INTERNAL: Loads the object identity from the database.

Specified by:

load in interface ClassAccessIF

Returns:

true if object was found in the data store, false otherwise.

Throws:

java.lang.Exception

loadField

public java.lang.Object loadField(AccessRegistrarIF registrar,
                                  IdentityIF identity,
                                  int field)

Description copied from interface: ClassAccessIF

INTERNAL: Loads the specified object field for the given identity from the database.

Specified by:

loadField in interface ClassAccessIF

loadFieldMultiple

public java.lang.Object loadFieldMultiple(AccessRegistrarIF registrar,
                                          java.util.Collection identities,
                                          IdentityIF current,
                                          int field)

Description copied from interface: ClassAccessIF

INTERNAL: Loads the specified object field for the given identitys from the database.

Specified by:

loadFieldMultiple in interface ClassAccessIF

create

public void create(ObjectAccessIF oaccess,
                   java.lang.Object object)
            throws java.lang.Exception

Description copied from interface: ClassAccessIF

INTERNAL: Creates the new object in the database. Note that the object identity can be extracted from the object using the supplied object access instance.

Specified by:

create in interface ClassAccessIF

Throws:

java.lang.Exception

bindParametersCreate

protected void bindParametersCreate(java.sql.PreparedStatement stm,
                                    ObjectAccessIF oaccess,
                                    java.lang.Object object)
                             throws java.lang.Exception

Throws:

java.lang.Exception

delete

public void delete(ObjectAccessIF oaccess,
                   java.lang.Object object)
            throws java.lang.Exception

Description copied from interface: ClassAccessIF

INTERNAL: Deletes the object identity from the database.

Specified by:

delete in interface ClassAccessIF

Throws:

java.lang.Exception

bindParametersDelete

protected void bindParametersDelete(java.sql.PreparedStatement stm,
                                    IdentityIF identity)
                             throws java.lang.Exception

Throws:

java.lang.Exception

clearFields

protected void clearFields(IdentityIF identity)
                    throws java.lang.Exception

Throws:

java.lang.Exception

storeDirty

public void storeDirty(ObjectAccessIF oaccess,
                       java.lang.Object object)
                throws java.lang.Exception

Description copied from interface: ClassAccessIF

INTERNAL: Stores object fields that are dirty in the database. Note that the object identity can be extracted from the object using the supplied object access instance.

Specified by:

storeDirty in interface ClassAccessIF

Throws:

java.lang.Exception