org.dbflute.optional

クラス RelationOptionalFactory

java.lang.Object

org.dbflute.optional.RelationOptionalFactory

public class RelationOptionalFactory
extends Object

導入されたバージョン:

1.0.5J (2014/06/22 Sunday)

作成者:

jflute

コンストラクタのサマリー

コンストラクタ

コンストラクタと説明
RelationOptionalFactory()

メソッドのサマリー

修飾子とタイプ	メソッドと説明
Object	createOptionalNullEntity(OptionalThingExceptionThrower thrower) Create optional null entity.
Object	createOptionalPresentEntity(Object relationRow) Create optional present entity.
Class<?>	getOptionalEntityType() Get the type of optional entity for relation.
boolean	isOptional(Object relationRow) Is the relation row wrapped optional object?
boolean	isOptionalType(Class<?> relationType) Is the relation type optional type?
Object	orElseNull(Object optional) Extract wrapped entity instance or null.

クラスから継承されたメソッド java.lang.Object

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

コンストラクタの詳細

RelationOptionalFactory

public RelationOptionalFactory()

メソッドの詳細

createOptionalNullEntity

public Object createOptionalNullEntity(OptionalThingExceptionThrower thrower)

Create optional null entity.

パラメータ:

thrower - The exception thrower for optional object. (NotNull: if needs)

戻り値:

The optional object for the relation. (NotNull)

createOptionalPresentEntity

public Object createOptionalPresentEntity(Object relationRow)

Create optional present entity.

パラメータ:

relationRow - The row instance of relation entity. (NotNull)

戻り値:

The optional object for the relation. (NotNull)

getOptionalEntityType

public Class<?> getOptionalEntityType()

Get the type of optional entity for relation.

戻り値:

The class type of optional entity. (NotNull)

orElseNull

public Object orElseNull(Object optional)

Extract wrapped entity instance or null.

パラメータ:

optional - The optional object as object. (NotNull)

戻り値:

The extracted entity or null. (NullAllowed)

isOptional

public boolean isOptional(Object relationRow)

Is the relation row wrapped optional object?

パラメータ:

relationRow - The row of relation, might be optional. (NullAllowed: if null, returns false)

戻り値:

The determination, true or false.

isOptionalType

public boolean isOptionalType(Class<?> relationType)

Is the relation type optional type?

パラメータ:

relationType - The type of relation, might be optional. (NullAllowed: if null, returns false)

戻り値:

The determination, true or false.