Package org.hibernate.envers.internal.entities.mapper

Class AbstractMapper

java.lang.Object

org.hibernate.envers.internal.entities.mapper.AbstractMapper

Direct Known Subclasses:

AbstractIdMapper, AbstractMiddleComponentMapper, AbstractPropertyMapper

public abstract class AbstractMapper
extends Object

A base class for all entity mapper implementations.

Constructor Summary

Constructors

Constructor	Description
AbstractMapper()

Method Summary

Modifier and Type	Method	Description
protected <T> T	doPrivileged(Supplier<T> block)	Perform an action in a privileged block.
protected void	getAndSetValue(PropertyData propertyData, Object source, Object destination, ServiceRegistry serviceRegistry)	Gets the value from the source object and sets the value in the destination object.
protected <T> T	getValueFromObject(String propertyName, String accessType, Object object, ServiceRegistry serviceRegistry)	Get a value from the specified object.
protected <T> T	getValueFromObject(PropertyData propertyData, Object object, ServiceRegistry serviceRegistry)	Get a value from the specified object.
protected <T> T	newObjectInstance(Class<T> clazz, Object... args)	Creates a new object based on the specified class with the given constructor arguments.
protected void	setValueOnObject(PropertyData propertyData, Object object, Object value, ServiceRegistry serviceRegistry)	Set the specified value on the object.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractMapper

public AbstractMapper()

Method Detail

doPrivileged

protected <T> T doPrivileged(Supplier<T> block)

Perform an action in a privileged block.

Type Parameters:

T - the return type

Parameters:

block - the lambda to executed in privileged.

Returns:

the result of the privileged call, may be null

getValueFromObject

protected <T> T getValueFromObject(PropertyData propertyData,
                                   Object object,
                                   ServiceRegistry serviceRegistry)

Get a value from the specified object.

Type Parameters:

T - the return type

Parameters:

propertyData - the property data, should not be null

object - the object for which the value should be read, should not be null

serviceRegistry - the service registry, should not be null

Returns:

the value read from the object, may be null

getValueFromObject

protected <T> T getValueFromObject(String propertyName,
                                   String accessType,
                                   Object object,
                                   ServiceRegistry serviceRegistry)

Get a value from the specified object.

Type Parameters:

T - the return type

Parameters:

propertyName - the property name, should not be null

accessType - the property access type, should not be null

object - the object for hwich the value should be read, should not be null

serviceRegistry - the service registry, should not be null

Returns:

the value read from the object, may be null

setValueOnObject

protected void setValueOnObject(PropertyData propertyData,
                                Object object,
                                Object value,
                                ServiceRegistry serviceRegistry)

Set the specified value on the object.

Parameters:

propertyData - the property data, should not be null

object - the object for which the value should be set, should not be null

value - the value ot be set, may be null

serviceRegistry - the service registry, should not be null

getAndSetValue

protected void getAndSetValue(PropertyData propertyData,
                              Object source,
                              Object destination,
                              ServiceRegistry serviceRegistry)

Gets the value from the source object and sets the value in the destination object.

Parameters:

propertyData - the property data, should not be null

source - the source object, should not be null

destination - the destination object, should not be null

serviceRegistry - the service registry, should not be null

newObjectInstance

protected <T> T newObjectInstance(Class<T> clazz,
                                  Object... args)

Creates a new object based on the specified class with the given constructor arguments.

Type Parameters:

T - the return class type

Parameters:

clazz - the class, must not be null

args - the variadic constructor arguments, may be omitted.

Returns:

a new instance of the class