1 /*
2 * Copyright 2002-2012 the original author or authors.
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 org.springframework.scripting.support;
18
19 import org.springframework.scripting.ScriptSource;
20 import org.springframework.util.Assert;
21
22 /**
23 * Static implementation of the
24 * {@link org.springframework.scripting.ScriptSource} interface,
25 * encapsulating a given String that contains the script source text.
26 * Supports programmatic updates of the script String.
27 *
28 * @author Rob Harrop
29 * @author Juergen Hoeller
30 * @since 2.0
31 */
32 public class StaticScriptSource implements ScriptSource {
33
34 private String script;
35
36 private boolean modified;
37
38 private String className;
39
40
41 /**
42 * Create a new StaticScriptSource for the given script.
43 * @param script the script String
44 */
45 public StaticScriptSource(String script) {
46 setScript(script);
47 }
48
49 /**
50 * Create a new StaticScriptSource for the given script.
51 * @param script the script String
52 * @param className the suggested class name for the script
53 * (may be {@code null})
54 */
55 public StaticScriptSource(String script, String className) {
56 setScript(script);
57 this.className = className;
58 }
59
60 /**
61 * Set a fresh script String, overriding the previous script.
62 * @param script the script String
63 */
64 public synchronized void setScript(String script) {
65 Assert.hasText(script, "Script must not be empty");
66 this.modified = !script.equals(this.script);
67 this.script = script;
68 }
69
70
71 @Override
72 public synchronized String getScriptAsString() {
73 this.modified = false;
74 return this.script;
75 }
76
77 @Override
78 public synchronized boolean isModified() {
79 return this.modified;
80 }
81
82 @Override
83 public String suggestedClassName() {
84 return this.className;
85 }
86
87
88 @Override
89 public String toString() {
90 return "static script" + (this.className != null ? " [" + this.className + "]" : "");
91 }
92
93 }