1 /*
2 * Copyright 2013-2020 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.springframework.data.jpa.repository.query;
17
18 import javax.persistence.Entity;
19
20 import org.springframework.core.annotation.AnnotatedElementUtils;
21 import org.springframework.util.Assert;
22 import org.springframework.util.StringUtils;
23
24 /**
25 * Default implementation for {@link JpaEntityMetadata}.
26 *
27 * @author Oliver Gierke
28 * @author Christoph Strobl
29 */
30 public class DefaultJpaEntityMetadata<T> implements JpaEntityMetadata<T> {
31
32 private final Class<T> domainType;
33
34 /**
35 * Creates a new {@link DefaultJpaEntityMetadata} for the given domain type.
36 *
37 * @param domainType must not be {@literal null}.
38 */
39 public DefaultJpaEntityMetadata(Class<T> domainType) {
40
41 Assert.notNull(domainType, "Domain type must not be null!");
42 this.domainType = domainType;
43 }
44
45 /*
46 * (non-Javadoc)
47 * @see org.springframework.data.repository.core.EntityMetadata#getJavaType()
48 */
49 @Override
50 public Class<T> getJavaType() {
51 return domainType;
52 }
53
54 /*
55 * (non-Javadoc)
56 * @see org.springframework.data.jpa.repository.support.JpaEntityMetadata#getEntityName()
57 */
58 @Override
59 public String getEntityName() {
60
61 Entity entity = AnnotatedElementUtils.findMergedAnnotation(domainType, Entity.class);
62 return null != entity && StringUtils.hasText(entity.name()) ? entity.name() : domainType.getSimpleName();
63 }
64 }
65