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jrichardsz/ClassScanner.java

Forked from skempken/Detector.java
Last active November 28, 2023 15:26
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Revisions

  1. jrichardsz revised this gist Dec 17, 2020. 3 changed files with 33 additions and 32 deletions.
    31 changes: 31 additions & 0 deletions ClassScanner.java
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    Original file line number Diff line number Diff line change
    @@ -0,0 +1,31 @@
    import java.lang.annotation.Annotation;
    import java.util.LinkedList;
    import java.util.List;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.config.BeanDefinition;
    import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider;
    import org.springframework.core.type.filter.AnnotationTypeFilter;
    import org.springframework.web.context.support.StandardServletEnvironment;

    public class ClassScanner {

    private static final Logger logger = LoggerFactory.getLogger(ClassScanner.class);

    public static Class<?>[] findAllAnnotatedClassesInPackage(String packageName,
    Class<? extends Annotation> clazz) {
    final List<Class<?>> result = new LinkedList<Class<?>>();
    final ClassPathScanningCandidateComponentProvider provider =
    new ClassPathScanningCandidateComponentProvider(true, new StandardServletEnvironment());
    provider.addIncludeFilter(new AnnotationTypeFilter(clazz));
    for (BeanDefinition beanDefinition : provider.findCandidateComponents(packageName)) {
    try {
    result.add(Class.forName(beanDefinition.getBeanClassName()));
    } catch (ClassNotFoundException e) {
    logger.warn("Could not resolve class object for bean definition", e);
    }
    }
    return result.toArray(new Class<?>[result.size()]);
    }

    }
    32 changes: 0 additions & 32 deletions Detector.java
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    @@ -1,32 +0,0 @@
    import java.util.LinkedList;
    import java.util.List;

    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.config.BeanDefinition;
    import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.core.type.filter.AnnotationTypeFilter;
    import org.springframework.web.context.support.StandardServletEnvironment;

    public class Detector {

    private static final Logger LOGGER = LoggerFactory.getLogger(Detector.class);

    public Class<?>[] findAllConfigurationClassesInPackage(String packageName) {
    final List<Class<?>> result = new LinkedList<Class<?>>();
    final ClassPathScanningCandidateComponentProvider provider = new ClassPathScanningCandidateComponentProvider(
    true, new StandardServletEnvironment());
    provider.addIncludeFilter(new AnnotationTypeFilter(Configuration.class));
    for (BeanDefinition beanDefinition : provider
    .findCandidateComponents(packageName)) {
    try {
    result.add(Class.forName(beanDefinition.getBeanClassName()));
    } catch (ClassNotFoundException e) {
    LOGGER.warn(
    "Could not resolve class object for bean definition", e);
    }
    }
    return result.toArray(new Class<?>[result.size()]);
    }
    }
    2 changes: 2 additions & 0 deletions Usage.java
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    @@ -0,0 +1,2 @@
    Class<?>[] classes = ClassScanner
    .findAllAnnotatedClassesInPackage("org.acme.model.entities", Entity.class);
  2. @skempken skempken renamed this gist Jan 20, 2015. 1 changed file with 0 additions and 0 deletions.
    0 gistfile1.java → Detector.java
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    File renamed without changes.
  3. @skempken skempken created this gist Jan 20, 2015.
    32 changes: 32 additions & 0 deletions gistfile1.java
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    Original file line number Diff line number Diff line change
    @@ -0,0 +1,32 @@
    import java.util.LinkedList;
    import java.util.List;

    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.config.BeanDefinition;
    import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.core.type.filter.AnnotationTypeFilter;
    import org.springframework.web.context.support.StandardServletEnvironment;

    public class Detector {

    private static final Logger LOGGER = LoggerFactory.getLogger(Detector.class);

    public Class<?>[] findAllConfigurationClassesInPackage(String packageName) {
    final List<Class<?>> result = new LinkedList<Class<?>>();
    final ClassPathScanningCandidateComponentProvider provider = new ClassPathScanningCandidateComponentProvider(
    true, new StandardServletEnvironment());
    provider.addIncludeFilter(new AnnotationTypeFilter(Configuration.class));
    for (BeanDefinition beanDefinition : provider
    .findCandidateComponents(packageName)) {
    try {
    result.add(Class.forName(beanDefinition.getBeanClassName()));
    } catch (ClassNotFoundException e) {
    LOGGER.warn(
    "Could not resolve class object for bean definition", e);
    }
    }
    return result.toArray(new Class<?>[result.size()]);
    }
    }