br.com.anteros.jsondoc.springmvc.scanner.builder.SpringPathBuilder Maven / Gradle / Ivy

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The support for Spring MVC of the jsondoc project.

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package br.com.anteros.jsondoc.springmvc.scanner.builder;

import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

import org.springframework.web.bind.annotation.RequestMapping;

public class SpringPathBuilder {

	/**
	 * From Spring's documentation: Supported at the type level as well as at
	 * the method level! When used at the type level, all method-level mappings
	 * inherit this primary mapping, narrowing it for a specific handler method.
	 * 
	 * @param apiMethodDoc
	 * @param method
	 * @param controller
	 * @return
	 */
	public static Set buildPath(Method method) {
		Class controller = method.getDeclaringClass();

		Set paths = new HashSet();
		Set controllerMapping = new HashSet();
		Set methodMapping = new HashSet();

		if (controller.isAnnotationPresent(RequestMapping.class)) {
			RequestMapping requestMapping = controller.getAnnotation(RequestMapping.class);
			if (requestMapping.value().length > 0) {
				controllerMapping = new HashSet(Arrays.asList(requestMapping.value()));
			}
		}

		if (method.isAnnotationPresent(RequestMapping.class)) {
			RequestMapping requestMapping = method.getAnnotation(RequestMapping.class);
			if (requestMapping.value().length > 0) {
				methodMapping = new HashSet(Arrays.asList(requestMapping.value()));
			}
		}

		// if no path has been specified then adds an empty path to enter the following loop
		if (controllerMapping.isEmpty()) {
			controllerMapping.add("");
		}
		if(methodMapping.isEmpty()) {
			methodMapping.add("");
		}

		for (String controllerPath : controllerMapping) {
			for (String methodPath : methodMapping) {
				paths.add(controllerPath + methodPath);
			}
		}
		
		for (String path : paths) {
			if(path.equals("")) {
				paths.remove(path);
				paths.add("/");
			}
		}

		return paths;
	}

}