1 /*
2 * Copyright 2010 Daniel Kurka
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
5 * use this file except in compliance with the License. You may obtain a copy of
6 * the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations under
14 * the License.
15 */
16 package com.googlecode.mgwt.collection.shared;
17
18 import com.google.gwt.core.client.GWT;
19 import com.googlecode.mgwt.collection.client.JsLightArray;
20 import com.googlecode.mgwt.collection.client.JsLightArrayInteger;
21 import com.googlecode.mgwt.collection.client.JsLightMap;
22 import com.googlecode.mgwt.collection.shared.java.JavaLightArray;
23 import com.googlecode.mgwt.collection.shared.java.JavaLightArrayInt;
24 import com.googlecode.mgwt.collection.shared.java.JavaLightMap;
25
26 /**
27 * A factory to create instances of the light collections api.
28 *
29 * If this is run in production code javascript objects are used to speed up collections. If run
30 * inside a JVM / dev mode the java implementation is used
31 *
32 * @author Daniel Kurka
33 *
34 */
35 public class CollectionFactory {
36 /**
37 * Construct a LightMap
38 *
39 * @param <V> the type of the map
40 * @return the map
41 */
42 public static <V> LightMap<V> constructMap() {
43 if (GWT.isProdMode()) {
44 return new JsLightMap<V>();
45 } else {
46 return new JavaLightMap<V>();
47 }
48 }
49
50 /**
51 * Construct a {@link LightArray}
52 *
53 * @param <V> the type of objects that go into the array
54 * @return the array
55 */
56 public static <V> LightArray<V> constructArray() {
57 if (GWT.isProdMode()) {
58 return new JsLightArray<V>();
59 } else {
60 return new JavaLightArray<V>();
61 }
62 }
63
64 /**
65 * Construct an array of integers
66 *
67 * @return the array
68 */
69 public static LightArrayInt constructIntegerArray() {
70 if (GWT.isProdMode()) {
71 return new JsLightArrayInteger();
72 } else {
73 return new JavaLightArrayInt();
74 }
75 }
76 }