com.hiramchirino.restygwt.client.Resource.java Source code

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Here is the source code for com.hiramchirino.restygwt.client.Resource.java

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/**
 * Copyright (C) 2009  Hiram Chirino
 *
 * 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.hiramchirino.restygwt.client;

import java.util.Map;

import com.google.gwt.http.client.URL;

/**
 * 
 * @author <a href="http://hiramchirino.com">Hiram Chirino</a>
 */
public class Resource {
    public static final String CONTENT_TYPE_TEXT = "plain/text";
    public static final String CONTENT_TYPE_JSON = "application/json";
    public static final String CONTENT_TYPE_XML = "application/xml";
    public static final String CONTENT_TYPE_RSS = "application/rss+xml";
    public static final String CONTENT_TYPE_ATOM = "application/atom+xml";

    public static final String HEADER_ACCEPT = "Accept";
    public static final String HEADER_CONTENT_TYPE = "Content-Type";

    String path;
    String query;

    private Map<String, String> headers = defaultHeaders();

    public Resource(String uri) {
        int pos = uri.indexOf('?');
        if (pos >= 0) {
            this.path = uri.substring(0, pos);
            this.query = uri.substring(pos + 1);
        } else {
            this.path = uri;
        }
    }

    public Resource(String uri, String query) {
        this.path = uri;
        this.query = query;
    }

    public Method head() {
        return new Method(this, "HEAD").headers(headers);
    }

    public Method get() {
        return new Method(this, "GET").headers(headers);
    }

    public Method put() {
        return new Method(this, "PUT").headers(headers);
    }

    public Method post() {
        return new Method(this, "POST").headers(headers);
    }

    public Method delete() {
        return new Method(this, "DELETE").headers(headers);
    }

    public Method options() {
        return new Method(this, "OPTIONS").headers(headers);
    }

    public JsonpMethod jsonp() {
        return new JsonpMethod(this);
    }

    public String getPath() {
        return path;
    }

    public String getQuery() {
        return query;
    }

    public String getUri() {
        if (query != null) {
            return path + "?" + query;
        }
        return path;
    }

    protected Map<String, String> defaultHeaders() {
        return null;
    }

    // TODO: support fancier resolutions
    public Resource resolve(String path) {
        return new Resource(this.path + path);
    }

    public Resource addQueryParam(String key, String value) {
        key = URL.encodeComponent(key);
        value = URL.encodeComponent(value);
        String q = query == null ? "" : query + "&";
        return new Resource(path, q + key + "=" + value);
    }

}