1 package org.esigate.test;
2
3 import java.util.Properties;
4
5 /**
6 * This is a builder for esigate properties.
7 *
8 * <p>
9 * Used mainly for testing purposes.
10 *
11 * @author Nicolas Richeton
12 *
13 */
14 public class PropertiesBuilder {
15
16 private Properties prop = new Properties();
17 private Properties target = null;
18
19 /**
20 * Constructor
21 */
22 public PropertiesBuilder() {
23 }
24
25 /**
26 * Set a property.
27 *
28 * <p>
29 * Perform automatic conversion for
30 * <ul>
31 * <li>Class object : uses the full name (package + classname)</li>
32 * <li>Multiple objects : appends all values, comma separated.</li>
33 * <li>Other objects : uses the toString() value.</li>
34 * </ul>
35 *
36 * @param key
37 * property name
38 * @param value
39 * one or multiple objects
40 * @return the builder (fluent style)
41 */
42 @SuppressWarnings("rawtypes")
43 public PropertiesBuilder set(Object key, Object... value) {
44
45 String objectValue = "";
46 boolean first = true;
47
48 for (int i = 0; i < value.length; i++) {
49
50 // Handle list
51 if (first)
52 first = false;
53 else
54 objectValue = objectValue + ",";
55
56 // Add object
57 Object o = value[i];
58
59 if (o instanceof Class) {
60 objectValue = objectValue + ((Class) o).getName();
61 }
62 // Other conversions could be added here...
63 else {
64 // Default value
65 objectValue = o.toString();
66 }
67 }
68
69 return this.set(key.toString(), objectValue);
70 }
71
72 /**
73 * Set a property.
74 *
75 * @param key
76 * property name
77 *
78 * @param value
79 * property value
80 * @return the builder (fluent style)
81 */
82 public PropertiesBuilder set(String key, String value) {
83 prop.setProperty(key, value);
84 return this;
85 }
86
87 /**
88 * The builder can update an existing Properties object.
89 *
90 * @param p
91 * target properties object
92 * @return the builder (fluent style)
93 */
94 public PropertiesBuilder on(Properties p) {
95 target = p;
96 return this;
97 }
98
99 /**
100 * Build the Properties object, based on previous parameters.
101 *
102 * @return the properties
103 */
104 public Properties build() {
105
106 if (target != null) {
107 // Merge properties
108 target.putAll(prop);
109 } else {
110 target = prop;
111 }
112
113 return target;
114 }
115 }