| 1 | // SECTION-START[License Header] |
| 2 | // <editor-fold defaultstate="collapsed" desc=" Generated License "> |
| 3 | /* |
| 4 | * Copyright (c) 2010 The JOMC Project |
| 5 | * Copyright (c) 2005 Christian Schulte <cs@jomc.org> |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * |
| 12 | * o Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * |
| 15 | * o Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in |
| 17 | * the documentation and/or other materials provided with the |
| 18 | * distribution. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE JOMC PROJECT AND CONTRIBUTORS "AS IS" |
| 21 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 22 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 23 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE JOMC PROJECT OR |
| 24 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 26 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 27 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 28 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 29 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 30 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | * |
| 32 | * $Id: DefaultLocator.java 1346 2010-01-19 12:16:43Z schulte2005 $ |
| 33 | * |
| 34 | */ |
| 35 | // </editor-fold> |
| 36 | // SECTION-END |
| 37 | package org.jomc.ri; |
| 38 | |
| 39 | import java.io.IOException; |
| 40 | import java.net.URI; |
| 41 | import java.text.MessageFormat; |
| 42 | import java.util.ResourceBundle; |
| 43 | import javax.naming.Context; |
| 44 | import javax.naming.InitialContext; |
| 45 | import javax.naming.NamingException; |
| 46 | import javax.rmi.PortableRemoteObject; |
| 47 | import org.jomc.spi.Locator; |
| 48 | |
| 49 | // SECTION-START[Documentation] |
| 50 | // <editor-fold defaultstate="collapsed" desc=" Generated Documentation "> |
| 51 | /** |
| 52 | * Default {@code Locator} implementation. |
| 53 | * |
| 54 | * @author <a href="mailto:cs@jomc.org">Christian Schulte</a> 1.0 |
| 55 | * @version $Id: DefaultLocator.java 1346 2010-01-19 12:16:43Z schulte2005 $ |
| 56 | */ |
| 57 | // </editor-fold> |
| 58 | // SECTION-END |
| 59 | // SECTION-START[Annotations] |
| 60 | // <editor-fold defaultstate="collapsed" desc=" Generated Annotations "> |
| 61 | @javax.annotation.Generated( value = "org.jomc.tools.JavaSources", |
| 62 | comments = "See http://jomc.sourceforge.net/jomc/1.0-alpha-15/jomc-tools" ) |
| 63 | // </editor-fold> |
| 64 | // SECTION-END |
| 65 | public class DefaultLocator implements Locator |
| 66 | { |
| 67 | // SECTION-START[DefaultLocator] |
| 68 | |
| 69 | /** Constant for the {@code 'jndi'} URI scheme. */ |
| 70 | private static final String JNDI_URI_SCHEME = "jndi"; |
| 71 | |
| 72 | /** Constant for the {@code 'jndi+rmi'} URI scheme. */ |
| 73 | private static final String JNDI_RMI_URI_SCHEME = "jndi+rmi"; |
| 74 | |
| 75 | /** URI schemes supported by this {@code Locator} implementation. */ |
| 76 | private static final String[] SUPPORTED_URI_SCHEMES = |
| 77 | { |
| 78 | JNDI_URI_SCHEME, JNDI_RMI_URI_SCHEME |
| 79 | }; |
| 80 | |
| 81 | /** The JNDI context of the instance. */ |
| 82 | private Context jndiContext; |
| 83 | |
| 84 | /** |
| 85 | * Gets a flag indicating support for a given location URI. |
| 86 | * |
| 87 | * @param location The location URI to test support for. |
| 88 | * |
| 89 | * @return {@code true} if {@code location} is supported by this implementation; {@code false} else. |
| 90 | * |
| 91 | * @throws NullPointerException if {@code location} is {@code null}. |
| 92 | */ |
| 93 | public boolean isLocationSupported( final URI location ) |
| 94 | { |
| 95 | if ( location == null ) |
| 96 | { |
| 97 | throw new NullPointerException( "location" ); |
| 98 | } |
| 99 | |
| 100 | final String scheme = location.getScheme(); |
| 101 | for ( String s : SUPPORTED_URI_SCHEMES ) |
| 102 | { |
| 103 | if ( s.equals( scheme ) ) |
| 104 | { |
| 105 | return true; |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | return false; |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * Gets the JNDI context of the instance. |
| 114 | * |
| 115 | * @return The JNDI context of the instance. |
| 116 | * |
| 117 | * @throws NamingException if getting the context fails. |
| 118 | */ |
| 119 | public Context getJndiContext() throws NamingException |
| 120 | { |
| 121 | if ( this.jndiContext == null ) |
| 122 | { |
| 123 | this.jndiContext = new InitialContext(); |
| 124 | } |
| 125 | |
| 126 | return this.jndiContext; |
| 127 | } |
| 128 | |
| 129 | /** |
| 130 | * Gets the JNDI name for a given location. |
| 131 | * |
| 132 | * @param location The location to get a JNDI name for. |
| 133 | * |
| 134 | * @return The JNDI name for {@code location}. |
| 135 | * |
| 136 | * @throws NullPointerException if {@code location} is {@code null}. |
| 137 | */ |
| 138 | public String getJndiName( final URI location ) |
| 139 | { |
| 140 | if ( location == null ) |
| 141 | { |
| 142 | throw new NullPointerException( "location" ); |
| 143 | } |
| 144 | |
| 145 | String name = location.getSchemeSpecificPart(); |
| 146 | if ( name == null || name.replace( '/', ' ' ).trim().length() == 0 ) |
| 147 | { |
| 148 | name = ""; |
| 149 | } |
| 150 | if ( location.getFragment() != null ) |
| 151 | { |
| 152 | name += '#' + location.getFragment(); |
| 153 | } |
| 154 | |
| 155 | return name; |
| 156 | } |
| 157 | |
| 158 | public <T> T getObject( final Class<T> specification, final URI location ) throws IOException |
| 159 | { |
| 160 | if ( specification == null ) |
| 161 | { |
| 162 | throw new NullPointerException( "specification" ); |
| 163 | } |
| 164 | if ( location == null ) |
| 165 | { |
| 166 | throw new NullPointerException( "location" ); |
| 167 | } |
| 168 | |
| 169 | try |
| 170 | { |
| 171 | T object = null; |
| 172 | |
| 173 | final String scheme = location.getScheme(); |
| 174 | if ( !this.isLocationSupported( location ) ) |
| 175 | { |
| 176 | throw new IOException( this.getMessage( "unsupportedUriScheme", new Object[] |
| 177 | { |
| 178 | location.getScheme() |
| 179 | } ) ); |
| 180 | |
| 181 | } |
| 182 | |
| 183 | final Object jndiObject = this.getJndiContext().lookup( this.getJndiName( location ) ); |
| 184 | |
| 185 | if ( JNDI_URI_SCHEME.equals( scheme ) ) |
| 186 | { |
| 187 | object = (T) jndiObject; |
| 188 | } |
| 189 | else if ( JNDI_RMI_URI_SCHEME.equals( scheme ) ) |
| 190 | { |
| 191 | object = (T) PortableRemoteObject.narrow( jndiObject, specification ); |
| 192 | } |
| 193 | |
| 194 | return object; |
| 195 | } |
| 196 | catch ( final NamingException e ) |
| 197 | { |
| 198 | throw (IOException) new IOException( e.getMessage() ).initCause( e ); |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | private String getMessage( final String key, final Object args ) |
| 203 | { |
| 204 | return new MessageFormat( ResourceBundle.getBundle( DefaultLocator.class.getName().replace( '.', '/' ) ). |
| 205 | getString( key ) ).format( args ); |
| 206 | |
| 207 | } |
| 208 | |
| 209 | // SECTION-END |
| 210 | // SECTION-START[Constructors] |
| 211 | // <editor-fold defaultstate="collapsed" desc=" Generated Constructors "> |
| 212 | |
| 213 | /** Creates a new {@code DefaultLocator} instance. */ |
| 214 | @javax.annotation.Generated( value = "org.jomc.tools.JavaSources", |
| 215 | comments = "See http://jomc.sourceforge.net/jomc/1.0-alpha-15/jomc-tools" ) |
| 216 | public DefaultLocator() |
| 217 | { |
| 218 | // SECTION-START[Default Constructor] |
| 219 | super(); |
| 220 | // SECTION-END |
| 221 | } |
| 222 | // </editor-fold> |
| 223 | // SECTION-END |
| 224 | // SECTION-START[Dependencies] |
| 225 | // SECTION-END |
| 226 | // SECTION-START[Properties] |
| 227 | // SECTION-END |
| 228 | // SECTION-START[Messages] |
| 229 | // SECTION-END |
| 230 | } |