net.ontopia.persistence.proxy
Class AbstractFieldInfo

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

All Implemented Interfaces:

FieldHandlerIF, FieldInfoIF

Direct Known Subclasses:

AggregateFieldInfo, PrimitiveFieldInfo, ReferenceFieldInfo

public abstract class AbstractFieldInfo
extends Object
implements FieldInfoIF

INTERNAL: An abstract field info class containing the common behaviour for FieldInfoIFs.

Field Summary

protected int	cardinality
protected FieldDescriptor	field
protected Method	getter
protected int	index
protected boolean	is_collection
protected String	name
protected ClassInfoIF	parent_cinfo
protected boolean	readonly
protected Method	setter
protected Class	value_class

Fields inherited from interface net.ontopia.persistence.proxy.FieldInfoIF

MANY_TO_MANY, ONE_TO_MANY, ONE_TO_ONE

Constructor Summary

protected

AbstractFieldInfo(ClassInfoIF parent_cinfo, String name, int index, Class value_class, boolean is_collection, int cardinality, boolean readonly)

Method Summary

int	getCardinality() INTERNAL: Gets the field cardinality.
FieldDescriptor	getDescriptor() INTERNAL: Returns the underlying FieldDescriptor instance if one exists.
protected Method	getGetterMethod()
int	getIndex() INTERNAL: Gets the value field index of this field.
String[]	getJoinKeys() INTERNAL: Gets the columns in the join table that contains the keys of the referencing object.
String	getJoinTable() INTERNAL: Gets the name of the table which needs to be joined to order to access the field value from the master table.
String[]	getManyKeys() INTERNAL: Gets the columns in the join table that contains the keys of the referenced object.
String	getName() INTERNAL: Gets the field name.
ClassInfoIF	getParentClassInfo() INTERNAL: Gets the class info for the field's object type.
protected Method	getSetterMethod()
String	getTable() INTERNAL: Gets the table in which the field value is stored (aka the master table).
Object	getValue(Object object) INTERNAL: Gets the field value from the given object.
Class	getValueClass() INTERNAL: Gets the field value class.
boolean	isAggregateField() INTERNAL: Returns true if the field is an aggregate field.
boolean	isCollectionField() INTERNAL: Returns true if the field is a collection field (has a cardinality of 1:1 or 1:M).
boolean	isPrimitiveField() INTERNAL: Returns true if the field is a primitive field.
boolean	isReadOnly() INTERNAL: Returns true if this field is read-only field.
boolean	isReferenceField() INTERNAL: Returns true if the field is a reference field.
void	setValue(Object object, Object value) INTERNAL: Sets the field value for the given object.

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.ontopia.persistence.proxy.FieldInfoIF

getValueClassInfo, getValueColumns

Methods inherited from interface net.ontopia.persistence.proxy.FieldHandlerIF

bind, getColumnCount, isIdentityField, load, retrieveFieldValues, retrieveSQLValues

Field Detail

name

protected String name

index

protected int index

cardinality

protected int cardinality

readonly

protected boolean readonly

is_collection

protected boolean is_collection

parent_cinfo

protected ClassInfoIF parent_cinfo

value_class

protected Class value_class

field

protected FieldDescriptor field

getter

protected Method getter

setter

protected Method setter

Constructor Detail

AbstractFieldInfo

protected AbstractFieldInfo(ClassInfoIF parent_cinfo,
                            String name,
                            int index,
                            Class value_class,
                            boolean is_collection,
                            int cardinality,
                            boolean readonly)

Method Detail

getName

public String getName()

Description copied from interface: FieldInfoIF

INTERNAL: Gets the field name.

Specified by:

getName in interface FieldInfoIF

getIndex

public int getIndex()

Description copied from interface: FieldInfoIF

INTERNAL: Gets the value field index of this field. This is the id (index) used by transactions and persistent instances to refer to this particular object field.

Specified by:

getIndex in interface FieldInfoIF

isReadOnly

public boolean isReadOnly()

Description copied from interface: FieldInfoIF

INTERNAL: Returns true if this field is read-only field.

Specified by:

isReadOnly in interface FieldInfoIF

getCardinality

public int getCardinality()

Description copied from interface: FieldInfoIF

INTERNAL: Gets the field cardinality.

Specified by:

getCardinality in interface FieldInfoIF

isCollectionField

public boolean isCollectionField()

Description copied from interface: FieldInfoIF

INTERNAL: Returns true if the field is a collection field (has a cardinality of 1:1 or 1:M).

Specified by:

isCollectionField in interface FieldInfoIF

isPrimitiveField

public boolean isPrimitiveField()

Description copied from interface: FieldInfoIF

INTERNAL: Returns true if the field is a primitive field. Field value must be of primitive type.

Specified by:

isPrimitiveField in interface FieldInfoIF

isReferenceField

public boolean isReferenceField()

Description copied from interface: FieldInfoIF

INTERNAL: Returns true if the field is a reference field. Field value must be of identifiable type.

Specified by:

isReferenceField in interface FieldInfoIF

isAggregateField

public boolean isAggregateField()

Description copied from interface: FieldInfoIF

INTERNAL: Returns true if the field is an aggregate field. Field value must be of aggregate type.

Specified by:

isAggregateField in interface FieldInfoIF

getParentClassInfo

public ClassInfoIF getParentClassInfo()

Description copied from interface: FieldInfoIF

INTERNAL: Gets the class info for the field's object type.

Specified by:

getParentClassInfo in interface FieldInfoIF

getValueClass

public Class getValueClass()

Description copied from interface: FieldInfoIF

INTERNAL: Gets the field value class. For primitive fields the primitive wrapper class is returned.

Specified by:

getValueClass in interface FieldInfoIF

getTable

public String getTable()

Description copied from interface: FieldInfoIF

INTERNAL: Gets the table in which the field value is stored (aka the master table).

Specified by:

getTable in interface FieldInfoIF

getValue

public Object getValue(Object object)
                throws Exception

Description copied from interface: FieldInfoIF

INTERNAL: Gets the field value from the given object.

Specified by:

getValue in interface FieldInfoIF

Throws:

Exception

setValue

public void setValue(Object object,
                     Object value)
              throws Exception

Description copied from interface: FieldInfoIF

INTERNAL: Sets the field value for the given object.

Specified by:

setValue in interface FieldInfoIF

Throws:

Exception

getGetterMethod

protected Method getGetterMethod()

getSetterMethod

protected Method getSetterMethod()

getJoinTable

public String getJoinTable()

Description copied from interface: FieldInfoIF

INTERNAL: Gets the name of the table which needs to be joined to order to access the field value from the master table.

Specified by:

getJoinTable in interface FieldInfoIF

getJoinKeys

public String[] getJoinKeys()

Description copied from interface: FieldInfoIF

INTERNAL: Gets the columns in the join table that contains the keys of the referencing object.

Specified by:

getJoinKeys in interface FieldInfoIF

getManyKeys

public String[] getManyKeys()

Description copied from interface: FieldInfoIF

INTERNAL: Gets the columns in the join table that contains the keys of the referenced object.

Specified by:

getManyKeys in interface FieldInfoIF

getDescriptor

public FieldDescriptor getDescriptor()

INTERNAL: Returns the underlying FieldDescriptor instance if one exists.