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Java > Open Source Codes > com > google > inject > ConstantFactory


1 /**
2  * Copyright (C) 2006 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of 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,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 package com.google.inject;
18
19 import com.google.inject.util.Objects;
20 import com.google.inject.util.ToStringBuilder;
21
22 /**
23  * @author crazybob@google.com (Bob Lee)
24  */
25 class ConstantFactory<T> implements InternalFactory<T> {
26
27   private final T value;
28
29   public ConstantFactory(T value) {
30     this.value = Objects.nonNull(value, "value");
31   }
32
33   public T get(InternalContext ignored) {
34     return value;
35   }
36
37   public String JavaDoc toString() {
38     return new ToStringBuilder(ConstantFactory.class)
39         .add("value", value)
40         .toString();
41   }
42 }
43
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