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comparison WebServiceToolWorkflow/lib/SAWADLParser/src/javax/wadls/factory/WADLFactory.java @ 0:d5cd409b8a18 default tip

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Migrated tool version 1.0.0 from old tool shed archive to new tool shed repository
author ganjoo
date Tue, 07 Jun 2011 18:00:50 -0400
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-1:000000000000 0:d5cd409b8a18
1 /*
2 * (c) Copyright IBM Corp 2001, 2005
3 */
4
5 package javax.wadls.factory;
6
7 import java.io.*;
8 import java.util.*;
9
10 import javax.wadls.*;
11 import javax.wadls.xml.*;
12
13 /**
14 * This abstract class defines a factory API that enables applications
15 * to obtain a WSDLFactory capable of producing new Definitions, new
16 * WSDLReaders, and new WSDLWriters.
17 *
18 * Some ideas used here have been shamelessly copied from the
19 * wonderful JAXP and Xerces work.
20 *
21 * @author Matthew J. Duftler (duftler@us.ibm.com)
22 */
23 public abstract class WADLFactory
24 {
25 private static final String PROPERTY_NAME =
26 "javax.wadls.factory.WADLFactory";
27 private static final String PROPERTY_FILE_NAME =
28 "wadl.properties";
29 private static final String DEFAULT_FACTORY_IMPL_NAME =
30 "edu.uga.cs.lsdis.meteors.wadls.factory.WADLFactoryImpl";
31
32 private static String fullPropertyFileName = null;
33
34 /**
35 * Get a new instance of a WSDLFactory. This method
36 * follows (almost) the same basic sequence of steps that JAXP
37 * follows to determine the fully-qualified class name of the
38 * class which implements WSDLFactory. The steps (in order)
39 * are:
40 *<pre>
41 * Check the javax.wsdls.factory.WSDLFactory system property.
42 * Check the lib/wsdl.properties file in the JRE directory. The key
43 * will have the same name as the above system property.
44 * Use the default value.
45 *</pre>
46 * Once an instance of a WSDLFactory is obtained, invoke
47 * newDefinition(), newWSDLReader(), or newWSDLWriter(), to create
48 * the desired instances.
49 */
50 public static WADLFactory newInstance() throws WADLSException
51 {
52 String factoryImplName = findFactoryImplName();
53
54 return newInstance(factoryImplName);
55 }
56
57 /**
58 * Get a new instance of a WSDLFactory. This method
59 * returns an instance of the class factoryImplName.
60 * Once an instance of a WSDLFactory is obtained, invoke
61 * newDefinition(), newWSDLReader(), or newWSDLWriter(), to create
62 * the desired instances.
63 *
64 * @param factoryImplName the fully-qualified class name of the
65 * class which provides a concrete implementation of the abstract
66 * class WSDLFactory.
67 */
68 public static WADLFactory newInstance(String factoryImplName)
69 throws WADLSException
70 {
71 if (factoryImplName != null)
72 {
73 try
74 {
75 Class cl = Class.forName(factoryImplName);
76
77 return (WADLFactory)cl.newInstance();
78 }
79 catch (Exception e)
80 {
81 /*
82 Catches:
83 ClassNotFoundException
84 InstantiationException
85 IllegalAccessException
86 */
87 throw new WADLSException(WADLSException.CONFIGURATION_ERROR,
88 "Problem instantiating factory " +
89 "implementation.",
90 e);
91 }
92 }
93 else
94 {
95 throw new WADLSException(WADLSException.CONFIGURATION_ERROR,
96 "Unable to find name of factory " +
97 "implementation.");
98 }
99 }
100
101 /**
102 * Create a new instance of a Definition.
103 */
104 public abstract Application newApplication();
105
106 /**
107 * Create a new instance of a WSDLReader.
108 */
109 public abstract WADLReader newWADLReader();
110
111 /**
112 * Create a new instance of a WSDLWriter.
113 */
114 public abstract WADLWriter newWADLWriter();
115
116
117 private static String findFactoryImplName()
118 {
119 String factoryImplName = null;
120
121 // First, check the system property.
122 try
123 {
124 factoryImplName = System.getProperty(PROPERTY_NAME);
125
126 if (factoryImplName != null)
127 {
128 return factoryImplName;
129 }
130 }
131 catch (SecurityException e)
132 {
133 }
134
135 // Second, check the properties file.
136 String propFileName = getFullPropertyFileName();
137
138 if (propFileName != null)
139 {
140 try
141 {
142 Properties properties = new Properties();
143 File propFile = new File(propFileName);
144 FileInputStream fis = new FileInputStream(propFile);
145
146 properties.load(fis);
147 fis.close();
148
149 factoryImplName = properties.getProperty(PROPERTY_NAME);
150
151 if (factoryImplName != null)
152 {
153 return factoryImplName;
154 }
155 }
156 catch (IOException e)
157 {
158 }
159 }
160
161 // Third, return the default.
162 return DEFAULT_FACTORY_IMPL_NAME;
163 }
164
165 private static String getFullPropertyFileName()
166 {
167 if (fullPropertyFileName == null)
168 {
169 try
170 {
171 String javaHome = System.getProperty("java.home");
172
173 fullPropertyFileName = javaHome + File.separator + "lib" +
174 File.separator + PROPERTY_FILE_NAME;
175 }
176 catch (SecurityException e)
177 {
178 }
179 }
180
181 return fullPropertyFileName;
182 }
183 }