Package: ClassScanner
ClassScanner
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ClassScanner() |
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findClasses() |
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static {...} |
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withAnnotationFilter(Class) |
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withIncludeFilter(TypeFilter) |
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Coverage
1: /*
2: * *************************************************************************************************************************************************************
3: *
4: * TheseFoolishThings: Miscellaneous utilities
5: * http://tidalwave.it/projects/thesefoolishthings
6: *
7: * Copyright (C) 2009 - 2024 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 the License.
12: * 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 an "AS IS" BASIS, WITHOUT WARRANTIES OR
17: * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
18: *
19: * *************************************************************************************************************************************************************
20: *
21: * git clone https://bitbucket.org/tidalwave/thesefoolishthings-src
22: * git clone https://github.com/tidalwave-it/thesefoolishthings-src
23: *
24: * *************************************************************************************************************************************************************
25: */
26: package it.tidalwave.util.spring;
27:
28: import java.lang.annotation.Annotation;
29: import javax.annotation.Nonnull;
30: import java.util.ArrayList;
31: import java.util.Collection;
32: import java.util.List;
33: import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider;
34: import org.springframework.core.type.filter.AnnotationTypeFilter;
35: import org.springframework.core.type.filter.TypeFilter;
36: import org.springframework.util.ClassUtils;
37: import it.tidalwave.role.spring.RoleSpringConfiguration;
38: import lombok.Setter;
39:
40: /***************************************************************************************************************************************************************
41: *
42: * A utility for scanning classes in the classpath with some criteria.
43: *
44: * @author Fabrizio Giudici
45: *
46: **************************************************************************************************************************************************************/
47: public class ClassScanner
48: {
49: @Setter
50: private static String basePackages = System.getProperty(
51: ClassScanner.class.getCanonicalName() + ".basePackages", RoleSpringConfiguration.getBasePackages());
52:
53: private final ClassPathScanningCandidateComponentProvider scanner =
54: new ClassPathScanningCandidateComponentProvider(false);
55:
56: /***********************************************************************************************************************************************************
57: * Scans for classes and returns them.
58: *
59: * @return the collection of scanned classes
60: **********************************************************************************************************************************************************/
61: @Nonnull
62: public final Collection<Class<?>> findClasses()
63: {
64: final List<Class<?>> classes = new ArrayList<>();
65:
66:• for (final var basePackage : basePackages.split(":"))
67: {
68:• for (final var candidate : scanner.findCandidateComponents(basePackage))
69: {
70: classes.add(ClassUtils.resolveClassName(candidate.getBeanClassName(),
71: ClassUtils.getDefaultClassLoader()));
72: }
73: }
74:
75: return classes;
76: }
77:
78: /***********************************************************************************************************************************************************
79: * Adds an "include" filter.
80: *
81: * @param filter the filter
82: * @return itself for method chaining
83: **********************************************************************************************************************************************************/
84: @Nonnull
85: public ClassScanner withIncludeFilter (@Nonnull final TypeFilter filter)
86: {
87: scanner.addIncludeFilter(filter);
88: return this;
89: }
90:
91: /***********************************************************************************************************************************************************
92: * Adds a filter for an annotation.
93: *
94: * @param annotationClass the annotation class
95: * @return itself for method chaining
96: **********************************************************************************************************************************************************/
97: @Nonnull
98: public ClassScanner withAnnotationFilter (@Nonnull final Class<? extends Annotation> annotationClass)
99: {
100: return withIncludeFilter(new AnnotationTypeFilter(annotationClass));
101: }
102: }