Package net.lecousin.reactive.data.relational.model

Class ModelUtils

java.lang.Object

net.lecousin.reactive.data.relational.model.ModelUtils

public class ModelUtils
extends Object

Utility methods.

Author:

Guillaume Le Cousin

Method Summary

Modifier and Type	Method	Description
static void	addToCollectionField(Field field, Object collectionOwnerInstance, Object elementToAdd)
static List<Field>	getAllFields(Class<?> cl)	Retrieve all fields from the class and its super classes.
static <T> Collection<T>	getAsCollection(Object value)	Return the given object as a collection.
static Class<?>	getCollectionType(Field field)	Get the type of elements in a collection field.
static Object	getFieldValue(Object instance, Field field)
static Object	getId(org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entityType, PropertiesSource source)
static Object	getPersistedDatabaseValue(EntityState state, PropertyMetadata property)
static List<org.springframework.data.relational.core.mapping.RelationalPersistentProperty>	getProperties(org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entityType, String... names)
static Class<?>	getRequiredCollectionType(Field field)	Get the type of elements in a collection field.
static boolean	hasCascadeDeleteImpacts(Class<?> entityType)
static Function<PropertiesSource,Object>	idGetter(org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entityType)
static Function<PropertiesSource,Object>	idGetterFromIdProperty(org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entityType)
static Function<PropertiesSource,Object>	idGetterFromProperties(Iterable<org.springframework.data.relational.core.mapping.RelationalPersistentProperty> properties)
static boolean	isCollection(Field field)	Check if the given field is a collection.
static boolean	isCollectionType(Class<?> type)	Check if the given type is a collection.
static boolean	isPropertyPartOfCompositeId(org.springframework.data.relational.core.mapping.RelationalPersistentProperty property)
static void	removeFromCollectionField(Field field, Object collectionOwnerInstance, Object elementToRemove)
static void	setFieldValue(Object instance, Field field, Object value)
static void	setReverseLink(Object instance, Object linkedInstance, org.springframework.data.relational.core.mapping.RelationalPersistentProperty linkedProperty)	Set the foreign table field on the given instance to the given linkedInstance.

Methods inherited from class java.lang.Object

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

Method Detail

getFieldValue

public static Object getFieldValue(@NonNull
                                   Object instance,
                                   @NonNull
                                   Field field)

setFieldValue

public static void setFieldValue(@NonNull
                                 Object instance,
                                 @NonNull
                                 Field field,
                                 @Nullable
                                 Object value)

setReverseLink

public static void setReverseLink(Object instance,
                                  Object linkedInstance,
                                  org.springframework.data.relational.core.mapping.RelationalPersistentProperty linkedProperty)

Set the foreign table field on the given instance to the given linkedInstance.

Parameters:

instance - entity having the foreign table field

linkedInstance - entity having the foreign key

linkedProperty - foreign key property

getAllFields

public static List<Field> getAllFields(Class<?> cl)

Retrieve all fields from the class and its super classes.

Parameters:

cl - class

Returns:

fields

isCollection

public static boolean isCollection(Field field)

Check if the given field is a collection.

Parameters:

field - field to check

Returns:

true if the field is an array or a Collection

isCollectionType

public static boolean isCollectionType(Class<?> type)

Check if the given type is a collection.

Parameters:

type - type to check

Returns:

true if the type is an array or implements Collection

getAsCollection

@Nullable
public static <T> Collection<T> getAsCollection(Object value)

Return the given object as a collection.

Parameters:

value - the object

Returns:

a collection or null

getCollectionType

@Nullable
public static Class<?> getCollectionType(Field field)

Get the type of elements in a collection field.

Parameters:

field - field

Returns:

type of elements

getRequiredCollectionType

public static Class<?> getRequiredCollectionType(Field field)

Get the type of elements in a collection field.

Parameters:

field - field

Returns:

type of elements

addToCollectionField

public static void addToCollectionField(Field field,
                                        Object collectionOwnerInstance,
                                        Object elementToAdd)
                                 throws IllegalAccessException

Throws:

IllegalAccessException

removeFromCollectionField

public static void removeFromCollectionField(Field field,
                                             Object collectionOwnerInstance,
                                             Object elementToRemove)
                                      throws IllegalAccessException

Throws:

IllegalAccessException

getPersistedDatabaseValue

public static Object getPersistedDatabaseValue(EntityState state,
                                               PropertyMetadata property)

getProperties

public static List<org.springframework.data.relational.core.mapping.RelationalPersistentProperty> getProperties(org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entityType,
                                                                                                                String... names)

isPropertyPartOfCompositeId

public static boolean isPropertyPartOfCompositeId(org.springframework.data.relational.core.mapping.RelationalPersistentProperty property)

getId

public static Object getId(org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entityType,
                           PropertiesSource source)

idGetter

public static Function<PropertiesSource,Object> idGetter(org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entityType)

idGetterFromIdProperty

public static Function<PropertiesSource,Object> idGetterFromIdProperty(org.springframework.data.relational.core.mapping.RelationalPersistentEntity<?> entityType)

idGetterFromProperties

public static Function<PropertiesSource,Object> idGetterFromProperties(Iterable<org.springframework.data.relational.core.mapping.RelationalPersistentProperty> properties)

hasCascadeDeleteImpacts

public static boolean hasCascadeDeleteImpacts(Class<?> entityType)