io.camunda.zeebe.spring.client.bean.MethodInfo Maven / Gradle / Ivy
package io.camunda.zeebe.spring.client.bean;
import static org.springframework.core.annotation.AnnotationUtils.findAnnotation;
import java.lang.annotation.Annotation;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Parameter;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import org.springframework.core.StandardReflectionParameterNameDiscoverer;
public class MethodInfo implements BeanInfo {
private static final StandardReflectionParameterNameDiscoverer parameterNameDiscoverer =
new StandardReflectionParameterNameDiscoverer();
protected ClassInfo classInfo;
protected Method method;
protected MethodInfo(ClassInfo classInfo, Method method) {
this.classInfo = classInfo;
this.method = method;
}
protected MethodInfo(MethodInfo original) {
this.classInfo = original.classInfo;
this.method = original.method;
}
@Override
public Object getBean() {
return classInfo.getBean();
}
@Override
public String getBeanName() {
return classInfo.getBeanName();
}
public String getMethodName() {
return method.getName();
}
public Object invoke(final Object... args) throws Exception {
try {
return method.invoke(getBean(), args);
} catch (InvocationTargetException e) {
final Throwable targetException = e.getTargetException();
if (targetException instanceof Exception) {
throw (Exception) targetException;
} else {
throw new RuntimeException("Failed to invoke method: " + method.getName(), targetException);
}
} catch (IllegalAccessException e) {
throw new RuntimeException("Failed to invoke method: " + method.getName(), e);
}
}
public Optional getAnnotation(final Class type) {
return Optional.ofNullable(findAnnotation(method, type));
}
public List getParameters() {
Parameter[] parameters = method.getParameters();
String[] parameterNames = parameterNameDiscoverer.getParameterNames(method);
ArrayList result = new ArrayList<>();
for (int i = 0; i < parameters.length; i++) {
result.add(new ParameterInfo(parameters[i], parameterNames[i]));
}
return result;
}
public List getParametersFilteredByAnnotation(final Class type) {
Parameter[] parameters = method.getParameters();
String[] parameterNames = parameterNameDiscoverer.getParameterNames(method);
ArrayList result = new ArrayList<>();
for (int i = 0; i < parameters.length; i++) {
if (parameters[i].isAnnotationPresent(type)) {
result.add(new ParameterInfo(parameters[i], parameterNames[i]));
}
}
return result;
}
public static MethodInfoBuilder builder() {
return new MethodInfoBuilder();
}
public static final class MethodInfoBuilder {
private ClassInfo classInfo;
private Method method;
private MethodInfoBuilder() {}
public MethodInfoBuilder classInfo(ClassInfo classInfo) {
this.classInfo = classInfo;
return this;
}
public MethodInfoBuilder method(Method method) {
this.method = method;
return this;
}
public MethodInfo build() {
return new MethodInfo(classInfo, method);
}
}
}