cherry.example.web.applied.ex30.AppliedEx31ControllerImpl.java Source code

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Here is the source code for cherry.example.web.applied.ex30.AppliedEx31ControllerImpl.java

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/*
 * Copyright 2015 agwlvssainokuni
 *
 * 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 cherry.example.web.applied.ex30;

import static cherry.example.web.ParamDef.REQ_ID;
import static cherry.example.web.util.ModelAndViewBuilder.redirect;
import static cherry.example.web.util.ModelAndViewBuilder.withViewname;
import static cherry.example.web.util.ModelAndViewBuilder.withoutView;
import static cherry.foundation.springmvc.Contract.shouldExist;
import static com.google.common.base.Preconditions.checkState;
import static org.springframework.web.servlet.mvc.method.annotation.MvcUriComponentsBuilder.fromMethodCall;
import static org.springframework.web.servlet.mvc.method.annotation.MvcUriComponentsBuilder.on;

import java.util.Locale;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mobile.device.site.SitePreference;
import org.springframework.security.core.Authentication;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.support.SessionStatus;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.util.UriComponents;
import org.springframework.web.util.UriComponentsBuilder;

import cherry.example.web.LogicalError;
import cherry.example.web.applied.ex30.AppliedEx31FormBase.Prop;
import cherry.example.web.util.ViewNameUtil;
import cherry.foundation.logicalerror.LogicalErrorUtil;
import cherry.foundation.onetimetoken.OneTimeTokenValidator;

@Controller
public class AppliedEx31ControllerImpl implements AppliedEx31Controller {

    @Autowired
    private OneTimeTokenValidator oneTimeTokenValidator;

    @Autowired
    private AppliedEx31Service service;

    private final String viewnameOfStart = ViewNameUtil
            .fromMethodCall(on(AppliedEx31Controller.class).start(0L, null, null, null, null, null, null));

    @Override
    public ModelAndView init(String redirTo, long id, Authentication auth, Locale locale, SitePreference sitePref,
            NativeWebRequest request, SessionStatus status) {

        status.setComplete();

        return redirect(redirectOnInit(redirTo, id)).build();
    }

    @Override
    public ModelAndView start(long id, AppliedEx31Form form, BindingResult binding, Authentication auth,
            Locale locale, SitePreference sitePref, NativeWebRequest request) {
        AppliedEx31Form f = service.findById(id);
        shouldExist(f, AppliedEx31Form.class, id);
        return withViewname(viewnameOfStart).addObject(f).build();
    }

    @Override
    public ModelAndView update(long id, AppliedEx31Form form, BindingResult binding, Authentication auth,
            Locale locale, SitePreference sitePref, NativeWebRequest request) {
        return withViewname(viewnameOfStart).build();
    }

    @Override
    public ModelAndView confirm(long id, AppliedEx31Form form, BindingResult binding, Authentication auth,
            Locale locale, SitePreference sitePref, NativeWebRequest request) {

        if (hasErrors(id, form, binding)) {
            return withViewname(viewnameOfStart).build();
        }

        return withoutView().build();
    }

    @Override
    public ModelAndView back(long id, AppliedEx31Form form, BindingResult binding, Authentication auth,
            Locale locale, SitePreference sitePref, NativeWebRequest request) {
        return withViewname(viewnameOfStart).build();
    }

    @Override
    public ModelAndView execute(long id, AppliedEx31Form form, BindingResult binding, Authentication auth,
            Locale locale, SitePreference sitePref, NativeWebRequest request) {

        if (hasErrors(id, form, binding)) {
            return withViewname(viewnameOfStart).build();
        }

        if (!oneTimeTokenValidator.isValid(request.getNativeRequest(HttpServletRequest.class))) {
            LogicalErrorUtil.rejectOnOneTimeTokenError(binding);
            return withViewname(viewnameOfStart).build();
        }

        long count = service.update(id, form);
        checkState(count == 1L, "failed to update: id=%s, form=%s", id, form);

        return redirect(redirectOnExecute(id)).build();
    }

    @Override
    public ModelAndView completed(long id, Authentication auth, Locale locale, SitePreference sitePref,
            NativeWebRequest request, SessionStatus status) {

        status.setComplete();

        AppliedEx31Form f = service.findById(id);
        shouldExist(f, AppliedEx31Form.class, id);
        return withoutView().addObject(f).build();
    }

    private UriComponents redirectOnInit(String redir, long id) {
        if (StringUtils.isNotEmpty(redir)) {
            return UriComponentsBuilder.fromPath(redir).build();
        } else {
            return fromMethodCall(on(AppliedEx31Controller.class).start(id, null, null, null, null, null, null))
                    .replaceQueryParam(REQ_ID, id).build();
        }
    }

    private UriComponents redirectOnExecute(long id) {
        return fromMethodCall(on(AppliedEx31Controller.class).completed(id, null, null, null, null, null))
                .replaceQueryParam(REQ_ID, id).build();
    }

    private boolean hasErrors(long id, AppliedEx31Form form, BindingResult binding) {

        // ??
        if (binding.hasErrors()) {
            return true;
        }

        // ?
        if (form.getDt() == null && form.getTm() != null) {
            LogicalErrorUtil.rejectValue(binding, Prop.Dt.getName(), LogicalError.RequiredWhen, Prop.Dt.resolve(),
                    Prop.Tm.resolve());
        }

        if (binding.hasErrors()) {
            return true;
        }

        // ??
        if (service.exists(id, form.getText10())) {
            LogicalErrorUtil.rejectValue(binding, Prop.Text10.getName(), LogicalError.AlreadyExists,
                    Prop.Text10.resolve());
        }

        if (binding.hasErrors()) {
            return true;
        }

        return false;
    }

}