package org.jboss.errai.enterprise.rebind;
import java.lang.annotation.Annotation;
import java.util.HashMap;
import java.util.Map;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.HEAD;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import org.jboss.errai.codegen.framework.Statement;
import org.jboss.errai.codegen.framework.meta.MetaMethod;
import org.jboss.errai.codegen.framework.util.Stmt;
import com.google.gwt.http.client.RequestBuilder;
/**
* Utility to map a JAX-RS @HttpMethod to the corresponding GWT RequestBuilder method.
*
* @author Christian Sadilek <csadilek@redhat.com>
*/
public class JaxrsGwtRequestMethodMapper {
private static Map<Class<? extends Annotation>, Statement> map =
new HashMap<Class<? extends Annotation>, Statement>() {
{
put(GET.class, Stmt.loadStatic(RequestBuilder.class, "GET"));
put(PUT.class, Stmt.loadStatic(RequestBuilder.class, "PUT"));
put(POST.class, Stmt.loadStatic(RequestBuilder.class, "POST"));
put(DELETE.class, Stmt.loadStatic(RequestBuilder.class, "DELETE"));
put(HEAD.class, Stmt.loadStatic(RequestBuilder.class, "HEAD"));
}
};
/**
* Searches for @HttpMethod annotations on the provided method and
* returns the corresponding GWT RequestBuilder method.
*
* @param method
* @return statement representing the GWT RequestBuilder method
*/
public static Statement fromMethod(MetaMethod method) {
Statement gwtRequestMethod = null;
for (Class<? extends Annotation> jaxrsMethod : map.keySet()) {
if (method.isAnnotationPresent(jaxrsMethod)) {
gwtRequestMethod = map.get(jaxrsMethod);
break;
}
}
return gwtRequestMethod;
}
}