package com.yahoo.rest;import java.util.Map;import java.util.HashMap;import java.util.List;import java.util.ArrayList;/** * REST request base class. * * @author Ryan Kennedy */public class RestRequest {    private Map parameters;    private String requestUrl;    /**     * Constructs a REST request with the given URL.     *     * @param defaultRequestUrl The URL of the REST service.     */    public RestRequest(String defaultRequestUrl) {        parameters = new HashMap();        setRequestUrl(defaultRequestUrl);    }    /**     * Gets the list of parameters to send to the REST service.     *     * @return The list of parameters to send to the REST service.     */    public Map getParameters() {        return parameters;    }    /**     * Sets a parameter within the request. Overwrites any preexisting     * value.     *     * @param name The name of the parameter to set.     * @param value The value of the parameter to set.     */    public void setParameter(String name, String value) {        parameters.put(name, value);    }    /**     * Adds a parameter value to a list.     *     * @param name The name of the parameter list to add to.     * @param value The value to add to the parameter list.     */    public void addParameter(String name, String value) {        List params = (List) parameters.get(name);        if(params == null) {            params = new ArrayList();            parameters.put(name, params);        }        params.add(value);    }    /**     * Removes a parameter from the list.     *     * @param name The name of the parameter to remove from the list.     */    public void clearParameter(String name) {        parameters.remove(name);    }    /**     * Gets the request URL for the REST request.     *     * @return The request URL for the REST request.     */    public String getRequestUrl() {        return requestUrl;    }    /**     * Sets the URL for the REST request, overriding the default     * set in the constructor.     *     * @param requestUrl The new URL for the REST request.     */    public void setRequestUrl(String requestUrl) {        this.requestUrl = requestUrl;    }}