Method: persist()

1: /*
2: * *********************************************************************************************************************
3: *
4: * TheseFoolishThings: Miscellaneous utilities
5: * http://tidalwave.it/projects/thesefoolishthings
6: *
7: * Copyright (C) 2009 - 2023 by Tidalwave s.a.s. (http://tidalwave.it)
8: *
9: * *********************************************************************************************************************
10: *
11: * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
12: * the License. You may obtain a copy of the License at
13: *
14: * http://www.apache.org/licenses/LICENSE-2.0
15: *
16: * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
17: * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
18: * specific language governing permissions and limitations under the License.
19: *
20: * *********************************************************************************************************************
21: *
22: * git clone https://bitbucket.org/tidalwave/thesefoolishthings-src
23: * git clone https://github.com/tidalwave-it/thesefoolishthings-src
24: *
25: * *********************************************************************************************************************
26: */
27: package it.tidalwave.thesefoolishthings.examples.jpafinderexample.impl;
28:
29: import javax.annotation.Nonnull;
30: import java.util.function.Function;
31: import it.tidalwave.util.Finder;
32: import it.tidalwave.role.Removable;
33: import it.tidalwave.role.io.Persistable;
34: import it.tidalwave.thesefoolishthings.examples.jpafinderexample.TxManager;
35: import it.tidalwave.thesefoolishthings.examples.jpafinderexample.role.Findable;
36: import lombok.AllArgsConstructor;
37:
38: /***********************************************************************************************************************
39: *
40: * @author Fabrizio Giudici
41: *
42: **********************************************************************************************************************/
43: @AllArgsConstructor
44: public abstract class JpaPersistableSupport<T, E> implements Persistable, Removable, Findable<T>
45: {
46: @Nonnull
47: private final T datum;
48:
49: @Nonnull
50: private final Class<E> entityClass;
51:
52: @Nonnull
53: private final Function<E, T> fromEntity;
54:
55: @Nonnull
56: private final Function<T, E> toEntity;
57:
58: @Override
59: public void persist()
60: {
61: TxManager.getInstance().runInTx(em -> em.persist(toEntity.apply(datum)));
62: }
63:
64: @Override
65: public void remove()
66: {
67: TxManager.getInstance().runInTx(em -> em.remove(toEntity.apply(datum)));
68: }
69:
70: @Override @Nonnull
71: public Finder<T> find()
72: {
73: return new JpaFinder(entityClass, fromEntity, TxManager.getInstance());
74: }
75: }