/***
* Copyright (c) 2009 Caelum - www.caelum.com.br/opensource
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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 CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package br.com.caelum.vraptor.http.route;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import net.vidageek.mirror.dsl.Mirror;
import br.com.caelum.vraptor.http.ParameterNameProvider;
import br.com.caelum.vraptor.ioc.ApplicationScoped;
/**
* Discover parameter types
* @author Lucas Cavalcanti
*
*/
@ApplicationScoped
public class DefaultTypeFinder implements TypeFinder {
private final ParameterNameProvider provider;
public DefaultTypeFinder(ParameterNameProvider provider) {
this.provider = provider;
}
public Map<String, Class<?>> getParameterTypes(Method method, String[] parameterPaths) {
Map<String,Class<?>> result = new HashMap<String, Class<?>>();
String[] parameterNamesFor = provider.parameterNamesFor(method);
for (String path : parameterPaths) {
for (int i = 0; i < parameterNamesFor.length; i++) {
String name = parameterNamesFor[i];
if (path.startsWith(name + ".") || path.equals(name)) {
String[] items = path.split("\\.");
Class<?> type = method.getParameterTypes()[i];
for (int j = 1; j < items.length; j++) {
String item = items[j];
try {
type = new Mirror().on(type).reflect().method("get" + upperFirst(item)).withoutArgs().getReturnType();
} catch (Exception e) {
throw new IllegalArgumentException("Parameters paths are invalid: " + Arrays.toString(parameterPaths) + " for method " + method, e);
}
}
result.put(path, type);
}
}
}
return result;
}
private String upperFirst(String item) {
return item.substring(0, 1).toUpperCase() + item.substring(1);
}
}