2009/04/15 - Apache HiveMind has been retired.

For more information, please explore the Attic.

Clover coverage report - Code Coverage for hivemind-lib release 1.2.1

Coverage timestamp: Fri Feb 10 2006 16:34:07 PST

FRAMES NO FRAMES

file stats:	LOC:	153		Methods:	8
	NCLOC:	87		Classes:	1

Source file

Conditionals

Statements

Methods

TOTAL

NameLookupImpl.java

64.3%

87.5%

75%

79.6%

1		// Copyright 2004, 2005 The Apache Software Foundation
2		//
3		// Licensed under the Apache License, Version 2.0 (the "License");
4		// you may not use this file except in compliance with the License.
5		// You may obtain a copy of the License at
6		//
7		// http://www.apache.org/licenses/LICENSE-2.0
8		//
9		// Unless required by applicable law or agreed to in writing, software
10		// distributed under the License is distributed on an "AS IS" BASIS,
11		// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12		// See the License for the specific language governing permissions and
13		// limitations under the License.
14
15		package org.apache.hivemind.lib.impl;
16
17		import java.util.Hashtable;
18
19		import javax.naming.Context;
20		import javax.naming.InitialContext;
21		import javax.naming.NamingException;
22
23		import org.apache.hivemind.ApplicationRuntimeException;
24		import org.apache.hivemind.HiveMind;
25		import org.apache.hivemind.lib.NameLookup;
26		import org.apache.hivemind.lib.RemoteExceptionCoordinator;
27		import org.apache.hivemind.lib.RemoteExceptionEvent;
28		import org.apache.hivemind.lib.RemoteExceptionListener;
29
30		/**
31		* Standard implementation of the {@link org.apache.hivemind.lib.NameLookup}
32		* service interface.
33		*
34		* @author Howard Lewis Ship
35		*/
36		public class NameLookupImpl implements NameLookup, RemoteExceptionListener
37		{
38		private RemoteExceptionCoordinator _coordinator;
39		private Context _initialContext;
40		private String _initialFactory;
41		private String _URLPackages;
42		private String _providerURL;
43
44	4	public Object lookup(String name, Class expected)
45		{
46	4	int i = 0;
47
48	4	while (true)
49		{
50	5	Context context = null;
51	5	Object raw = null;
52
53	5	try
54		{
55	5	context = getInitialContext();
56
57	5	raw = context.lookup(name);
58		}
59		catch (NamingException ex)
60		{
61	2	if (i++ == 0)
62	1	_coordinator.fireRemoteExceptionDidOccur(this, ex);
63		else
64	1	throw new ApplicationRuntimeException(
65		ImplMessages.unableToLookup(name, context),
66		ex);
67	1	continue;
68		}
69
70	3	if (raw == null)
71	0	throw new ApplicationRuntimeException(ImplMessages.noObject(name, expected));
72
73	3	if (!expected.isAssignableFrom(raw.getClass()))
74	0	throw new ApplicationRuntimeException(ImplMessages.wrongType(name, raw, expected));
75
76	3	return raw;
77		}
78		}
79
80	5	private Context getInitialContext() throws NamingException
81		{
82	5	if (_initialContext == null)
83		{
84
85	3	Hashtable properties = new Hashtable();
86
87	3	if (!HiveMind.isBlank(_initialFactory))
88	3	properties.put(Context.INITIAL_CONTEXT_FACTORY, _initialFactory);
89
90	3	if (!HiveMind.isBlank(_providerURL))
91	3	properties.put(Context.PROVIDER_URL, _providerURL);
92
93	3	if (!HiveMind.isBlank(_URLPackages))
94	3	properties.put(Context.URL_PKG_PREFIXES, _URLPackages);
95
96	3	_initialContext = constructContext(properties);
97		}
98
99	5	return _initialContext;
100		}
101
102		/**
103		* Constructs the InitialContext (this is separated out in a standalone
104		* method so that it may be overridden in a testing subclass).
105		*/
106	0	protected Context constructContext(Hashtable properties) throws NamingException
107		{
108	0	return new InitialContext(properties);
109		}
110
111		/**
112		* Sets the InitialContext to null.
113		*/
114	0	public void remoteExceptionDidOccur(RemoteExceptionEvent event)
115		{
116	0	_initialContext = null;
117		}
118
119		/**
120		* Sets the initial factory used to create the initial JNDI context.
121		* Equivalent to the system property <code>java.naming.factory.initial</code>.
122		*/
123	3	public void setInitialFactory(String string)
124		{
125	3	_initialFactory = string;
126		}
127
128		/**
129		* Sets the JNDI provider URL, used to create the initial JNDI context.
130		* Equivalent to the system property <code>java.naming.provider.url</code>.
131		*/
132	3	public void setProviderURL(String string)
133		{
134	3	_providerURL = string;
135		}
136
137		/**
138		* Sets the URL packages, used to create the initial JNDI context.
139		* Equivalent to the system property
140		* <code>java.naming.factory.url.pkgs</code>
141		*/
142
143	3	public void setURLPackages(String string)
144		{
145	3	_URLPackages = string;
146		}
147
148	3	public void setCoordinator(RemoteExceptionCoordinator coordinator)
149		{
150	3	_coordinator = coordinator;
151		}
152
153		}