org.sakaiproject.metaobj.utils.mvc.impl.servlet.ServletRequestBeanDataBinder.java Source code

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/**********************************************************************************
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 *
 * Copyright (c) 2004, 2005, 2006, 2007, 2008 The Sakai Foundation
 *
 * Licensed under the Educational Community 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.opensource.org/licenses/ECL-2.0
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 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
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 * See the License for the specific language governing permissions and
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package org.sakaiproject.metaobj.utils.mvc.impl.servlet;

import javax.servlet.ServletRequest;

import org.springframework.beans.MutablePropertyValues;
import org.springframework.web.bind.ServletRequestDataBinder;
import org.springframework.web.bind.ServletRequestParameterPropertyValues;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.util.Assert;
import org.springframework.validation.BeanPropertyBindingResult;
import org.springframework.validation.AbstractPropertyBindingResult;
import org.sakaiproject.metaobj.utils.mvc.impl.CustomBeanPropertyBindingResult;

public class ServletRequestBeanDataBinder extends ServletRequestDataBinder {

    private AbstractPropertyBindingResult bindingResult;

    public ServletRequestBeanDataBinder(Object o, String s) {
        super(o, s);
    }

    public void bind(ServletRequest request) {
        // bind normal HTTP parameters
        bind(new ServletRequestParameterPropertyValues(request));

        // bind multipart files
        if (request instanceof MultipartHttpServletRequest) {
            MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
            bind(new MutablePropertyValues(multipartRequest.getFileMap()));
        }
    }

    /**
    * Initialize standard JavaBean property access for this DataBinder.
    * <p>This is the default; an explicit call just leads to eager initialization.
    * @see #initDirectFieldAccess()
     * */
    public void initBeanPropertyAccess() {
        Assert.isNull(this.bindingResult,
                "DataBinder is already initialized - call initBeanPropertyAccess before any other configuration methods");
        this.bindingResult = new CustomBeanPropertyBindingResult(getTarget(), getObjectName());
    }

    /**
     * Return the internal BindingResult held by this DataBinder,
     * as AbstractPropertyBindingResult.
     * */
    protected AbstractPropertyBindingResult getInternalBindingResult() {
        if (this.bindingResult == null) {
            initBeanPropertyAccess();
        }
        return this.bindingResult;
    }

}