com.google.code.gwt.rest.client.util.URLBuilder.java Source code

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Here is the source code for com.google.code.gwt.rest.client.util.URLBuilder.java

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/**
 * Copyright 2011 the original author or authors.
 *
 * 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.google.code.gwt.rest.client.util;

import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.http.client.RequestBuilder.Method;

/**
 * @author Takeshi Kondo
 */
public class URLBuilder {

    final Map<String, Object> paths = new HashMap<String, Object>();
    final Map<String, Object> params = new HashMap<String, Object>();

    private RequestBuilder.Method method;

    private SimpleTemplate template;

    public URLBuilder(Method method, SimpleTemplate template) {
        this.method = method;
        this.template = template;
    }

    public URLBuilder(SimpleTemplate template) {
        this(RequestBuilder.GET, template);
    }

    public String buildParam() {
        if (params.isEmpty()) {
            return "";
        }
        StringBuilder sb = new StringBuilder();
        for (Entry<String, Object> entry : params.entrySet()) {
            if (entry.getValue() == null) {
                continue;
            }
            sb.append(entry.getKey());
            sb.append("=");
            sb.append(entry.getValue());
            sb.append("&");
        }
        sb.delete(sb.length() - 1, sb.length());
        return sb.toString();
    }

    public String buildUrl() {
        StringBuilder sb = new StringBuilder();
        sb.append(template.resolve(paths));
        if (params.size() > 0) {
            if (method.equals(RequestBuilder.GET)) {
                if (sb.toString().contains("?")) {
                    sb.append("&");
                } else {
                    sb.append("?");
                }
                sb.append(buildParam());
            }
        }
        String uri = sb.toString();
        return uri;
    }

    public Method getMethod() {
        return method;
    }

    public void param(String key, Object value) {
        this.params.put(key, value);
    }

    public void params(Map<String, ?> params) {
        this.params.putAll(params);
    }

    public void path(String key, Object value) {
        this.paths.put(key, value);
    }

    public void paths(Map<String, ? extends Object> values) {
        this.paths.putAll(values);
    }

}