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package org.apache.camel.spring; |
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import org.apache.camel.builder.RouteBuilder; |
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import org.apache.camel.util.ResolverUtil; |
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import org.springframework.beans.BeansException; |
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import org.springframework.context.ApplicationContext; |
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import org.springframework.context.ApplicationContextAware; |
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import java.lang.reflect.Constructor; |
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import java.lang.reflect.Modifier; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.Set; |
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public class RouteBuilderFinder implements ApplicationContextAware { |
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private String[] packages = {}; |
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private ApplicationContext applicationContext; |
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private ResolverUtil resolver = new ResolverUtil(); |
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public RouteBuilderFinder(ApplicationContext applicationContext, String[] packages) { |
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this.applicationContext = applicationContext; |
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this.packages = packages; |
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} |
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public RouteBuilderFinder(CamelContextFactoryBean factoryBean) { |
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this.applicationContext = factoryBean.getApplicationContext(); |
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this.packages = factoryBean.getPackages(); |
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} |
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public String[] getPackages() { |
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return packages; |
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} |
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public void setPackages(String[] packages) { |
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this.packages = packages; |
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} |
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public ApplicationContext getApplicationContext() { |
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return applicationContext; |
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} |
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public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { |
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this.applicationContext = applicationContext; |
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} |
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public void appendBuilders(List<RouteBuilder> list) throws IllegalAccessException, InstantiationException { |
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resolver.findImplementations(RouteBuilder.class, packages); |
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Set<Class> classes = resolver.getClasses(); |
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for (Class aClass : classes) { |
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if (shouldIgnoreBean(aClass)) { |
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continue; |
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} |
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if (isValidClass(aClass)) { |
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list.add(instantiateBuilder(aClass)); |
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} |
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} |
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} |
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public void destroy() throws Exception { |
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} |
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protected boolean shouldIgnoreBean(Class type) { |
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Map beans = applicationContext.getBeansOfType(type, true, true); |
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if (beans == null || beans.isEmpty()) { |
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return false; |
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} |
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return true; |
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} |
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protected boolean isValidClass(Class type) { |
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if (!Modifier.isAbstract(type.getModifiers()) && !type.isInterface()) { |
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Constructor[] constructors = type.getDeclaredConstructors(); |
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for (Constructor constructor : constructors) { |
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Class[] classes = constructor.getParameterTypes(); |
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if (classes.length == 0) { |
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return true; |
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} |
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} |
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} |
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return false; |
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} |
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protected RouteBuilder instantiateBuilder(Class type) throws IllegalAccessException, InstantiationException { |
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return (RouteBuilder) type.newInstance(); |
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} |
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} |