com.qwazr.webapps.body.FormHttpBody Maven / Gradle / Ivy

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Web application server for QWAZR
There is a newer version: 1.5.0
/**
 * Copyright 2014-2016 Emmanuel Keller / QWAZR
 * 
 * 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 com.qwazr.webapps.body;

import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.ws.rs.core.Form;
import javax.ws.rs.core.MultivaluedMap;

public class FormHttpBody implements HttpBodyInterface {

    private final MultivaluedMap multiMap;
    private final Map simpleMap;

    FormHttpBody(Form form) {
	multiMap = form.asMap();
	simpleMap = null;
    }

    FormHttpBody(HttpServletRequest request) {
	simpleMap = request.getParameterMap();
	multiMap = null;
    }

    /**
     * Alias of getFirstParameter
     *
     * @param name
     *            the name of the parameter
     * @return the value stored for this parameter
     */
    public String parameter(String name) {
	return firstParameter(name);
    }

    /**
     *
     * @param name
     *            The name of the parameter
     * @return the value stored for this parameter
     */
    public String getParameter(String name) {
	return firstParameter(name);
    }

    /**
     *
     * @param name
     *            The name of the parameter
     * @return the first value or null if the form does not contain any value.
     */
    public String firstParameter(String name) {
	if (simpleMap != null) {
	    String[] values = simpleMap.get(name);
	    if (values == null || values.length < 1)
		return null;
	    return values[0];
	}
	if (multiMap != null)
	    return multiMap.getFirst(name);
	return null;
    }

    /**
     *
     * @param name
     *            The name of the parameter
     * @return an array containing the values or null if the parameter does not
     *         contain any value.
     */
    public String[] getParameters(String name) {
	if (simpleMap != null)
	    return simpleMap.get(name);
	if (multiMap != null) {
	    List values = multiMap.get(name);
	    if (values == null)
		return null;
	    return values.toArray(new String[values.size()]);
	}
	return null;
    }

    public String[] parameters(String name) {
	return getParameters(name);
    }
}