org.wallride.web.support.ControllerUtils.java Source code

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Here is the source code for org.wallride.web.support.ControllerUtils.java

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/*
 * Copyright 2014 Tagbangers, Inc.
 *
 * 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 org.wallride.web.support;

import org.springframework.beans.BeanWrapperImpl;
import org.springframework.context.i18n.LocaleContextHolder;
import org.springframework.core.convert.ConversionService;
import org.springframework.format.Printer;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.format.datetime.joda.JodaDateTimeFormatAnnotationFormatterFactory;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.util.CollectionUtils;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.util.UrlPathHelper;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.beans.PropertyDescriptor;
import java.net.URI;
import java.util.Collection;

public abstract class ControllerUtils {

    public static MultiValueMap<String, String> convertBeanForQueryParams(Object target,
            ConversionService conversionService) {
        BeanWrapperImpl beanWrapper = new BeanWrapperImpl(target);
        beanWrapper.setConversionService(conversionService);
        MultiValueMap<String, String> queryParams = new LinkedMultiValueMap();
        for (PropertyDescriptor pd : beanWrapper.getPropertyDescriptors()) {
            if (beanWrapper.isWritableProperty(pd.getName())) {
                Object pv = beanWrapper.getPropertyValue(pd.getName());
                if (pv != null) {
                    if (pv instanceof Collection) {
                        if (!CollectionUtils.isEmpty((Collection) pv)) {
                            for (Object element : (Collection) pv) {
                                queryParams.set(pd.getName(), convertPropertyValueForString(target, pd, element));
                            }
                        }
                    } else {
                        queryParams.set(pd.getName(), convertPropertyValueForString(target, pd, pv));
                    }
                }
            }
        }
        return queryParams;
    }

    private static String convertPropertyValueForString(Object target, PropertyDescriptor descriptor,
            Object propertyValue) {
        DateTimeFormat dateTimeFormat;
        try {
            dateTimeFormat = target.getClass().getDeclaredField(descriptor.getName())
                    .getAnnotation(DateTimeFormat.class);
        } catch (NoSuchFieldException e) {
            throw new RuntimeException(e);
        }
        if (dateTimeFormat != null) {
            JodaDateTimeFormatAnnotationFormatterFactory factory = new JodaDateTimeFormatAnnotationFormatterFactory();
            Printer printer = factory.getPrinter(dateTimeFormat, descriptor.getPropertyType());
            return printer.print(propertyValue, LocaleContextHolder.getLocale());
        }
        return propertyValue.toString();
    }

    public static ResponseEntity<?> createRedirectResponseEntity(HttpServletRequest nativeRequest,
            HttpServletResponse nativeResponse, String path) {
        UrlPathHelper pathHelper = new UrlPathHelper();
        String url = pathHelper.getContextPath(nativeRequest) + path;
        String encodedUrl = nativeResponse.encodeRedirectURL(url);

        HttpHeaders headers = new HttpHeaders();
        headers.setLocation(URI.create(encodedUrl));

        ResponseEntity<?> response = new ResponseEntity<>(null, headers, HttpStatus.FOUND);
        return response;
    }
}