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1
19 package org.apache.cayenne.conf;
20
21 import java.io.IOException  ;
22 import java.io.InputStream ;
23 import java.sql.Connection ;
24 import java.util.Properties ;
25
26 import org.apache.cayenne.ConfigurationException;
27 import org.apache.cayenne.util.ResourceLocator;
28 import org.apache.commons.pool.impl.GenericObjectPool;
29
30
36 class DBCPDataSourceProperties {
37
38 private static final String PROPERTY_PREFIX = "cayenne.dbcp.";
39
40 private Properties properties;
41
42
45 static Properties loadProperties(ResourceLocator resourceLocator, String location)
46 throws IOException {
47
48 InputStream in = resourceLocator.findResourceStream(location);
49
50 if (in == null && !location.endsWith(".properties")) {
52 in = resourceLocator.findResourceStream(location + ".properties");
53 }
54
55 if (in == null) {
56 throw new ConfigurationException("DBCP properties file not found: "
57 + location);
58 }
59
60 Properties properties = new Properties ();
61 try {
62 properties.load(in);
63 }
64 finally {
65 try {
66 in.close();
67 }
68 catch (IOException e) {
69 }
70 }
71
72 return properties;
73 }
74
75 DBCPDataSourceProperties(ResourceLocator resourceLocator, String location)
76 throws IOException {
77 this(loadProperties(resourceLocator, location));
78 }
79
80 DBCPDataSourceProperties(Properties properties) {
81 this.properties = properties;
82 }
83
84 Properties getProperties() {
85 return properties;
86 }
87
88 String getString(String property, boolean required) {
89 String value = properties.getProperty(PROPERTY_PREFIX + property);
90
91 if (required && value == null) {
92 throw new ConfigurationException("No value for required property: "
93 + PROPERTY_PREFIX
94 + property);
95 }
96
97 return value;
98 }
99
100 String getString(String property) {
101 return getString(property, false);
102 }
103
104 boolean getBoolean(String property, boolean defaultValue) {
105 String value = getString(property);
106 return (value != null)
107 ? "true".equalsIgnoreCase(getString(property))
108 : defaultValue;
109 }
110
111 int getInt(String property, int defaultValue) {
112 String value = getString(property);
113
114 try {
115 return (value != null) ? Integer.parseInt(value) : defaultValue;
116 }
117 catch (NumberFormatException nfex) {
118 return defaultValue;
119 }
120 }
121
122 long getLong(String property, long defaultValue) {
123 String value = getString(property);
124 try {
125 return (value != null) ? Long.parseLong(value) : defaultValue;
126 }
127 catch (NumberFormatException nfex) {
128 return defaultValue;
129 }
130 }
131
132 byte getByte(String property, byte defaultValue) {
133 String value = getString(property);
134 try {
135 return (value != null) ? Byte.parseByte(value) : defaultValue;
136 }
137 catch (NumberFormatException nfex) {
138 return defaultValue;
139 }
140 }
141
142 byte getWhenExhaustedAction(String property, byte defaultValue)
143 throws ConfigurationException {
144
145 String value = getString(property);
146
147 if (value == null) {
148 return defaultValue;
149 }
150
151 try {
153 return Byte.parseByte(value);
154 }
155 catch (NumberFormatException nfex) {
156 try {
158 return GenericObjectPool.class.getField(value).getByte(null);
159 }
160 catch (Throwable th) {
161 throw new ConfigurationException("Invalid 'whenExhaustedAction': "
162 + value);
163 }
164 }
165 }
166
167 int getTransactionIsolation(String property, int defaultValue) {
168
169 String value = getString(property);
170
171 if (value == null) {
172 return defaultValue;
173 }
174
175 try {
177 return Integer.parseInt(value);
178 }
179 catch (NumberFormatException nfex) {
180 try {
182 return Connection .class.getField(value).getInt(null);
183 }
184 catch (Throwable th) {
185 throw new ConfigurationException(
186 "Invalid 'defaultTransactionIsolation': " + value);
187 }
188 }
189 }
190
191 }
192 |
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