oracle.toplink.mappings
Class DirectToFieldMapping

java.lang.Object
oracle.toplink.mappings.DatabaseMapping
oracle.toplink.mappings.DirectToFieldMapping

All Implemented Interfaces:

java.lang.Cloneable, java.io.Serializable

Direct Known Subclasses:

ObjectTypeMapping, SerializedObjectMapping, TypeConversionMapping

public class DirectToFieldMapping

extends DatabaseMapping

Purpose: Maps an attribute to the corresponding database field type. The list of field types that are supported by TopLink's direct to field mapping is dependent on the relational databae being used.

Since:

TOPLink/Java 1.0

See Also:

Serialized Form

Constructor Summary

DirectToFieldMapping()
Default constructor.

Method Summary

java.lang.Class	getAttributeClassification() PUBLIC: Some databases do not properly support all of the base data types.
java.lang.String	getFieldName() PUBLIC: Name of the field this mapping represents.
java.lang.Object	getNullValue() PUBLIC: Allow for the value used for null to be specified.
void	setAttributeClassification(java.lang.Class aClass) PUBLIC: Some databases do not properly support all of the base data types.
void	setFieldName(java.lang.String FieldName) PUBLIC: Set the field name in the mapping.
void	setNullValue(java.lang.Object nullValue) PUBLIC: Allow for the value used for null to be specified.

Methods inherited from class oracle.toplink.mappings.DatabaseMapping

getAttributeName, getGetMethodName, getSetMethodName, readOnly, readWrite, setAttributeName, setGetMethodName, setIsReadOnly, setSetMethodName, setWeight, simpleAddToCollectionChangeRecord, simpleRemoveFromCollectionChangeRecord

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

DirectToFieldMapping

public DirectToFieldMapping()

Default constructor.

Method Detail

getAttributeClassification

public java.lang.Class getAttributeClassification()

PUBLIC: Some databases do not properly support all of the base data types. For these databases, the base data type must be explicitly specified in the mapping to tell TopLink to force the instance variable value to that data type

Overrides:

getAttributeClassification in class DatabaseMapping

getFieldName

public java.lang.String getFieldName()

PUBLIC: Name of the field this mapping represents.

getNullValue

public java.lang.Object getNullValue()

PUBLIC: Allow for the value used for null to be specified. This can be used to convert database null values to application specific values, when null values are not allowed by the application (such as in primitives). Note: the default value for NULL is used on reads, writes, and query SQL generation

setAttributeClassification

public void setAttributeClassification(java.lang.Class aClass)

PUBLIC: Some databases do not properly support all of the base data types. For these databases, the base data type must be explicitly specified in the mapping to tell TopLink to force the instance variable value to that data type

setFieldName

public void setFieldName(java.lang.String FieldName)

PUBLIC: Set the field name in the mapping.

setNullValue

public void setNullValue(java.lang.Object nullValue)

PUBLIC: Allow for the value used for null to be specified. This can be used to convert database null values to application specific values, when null values are not allowed by the application (such as in primitives). Note: the default value for NULL is used on reads, writes, and query SQL generation