| 1 | // SECTION-START[License Header] |
| 2 | // <editor-fold defaultstate="collapsed" desc=" Generated License "> |
| 3 | /* |
| 4 | * Java Object Management and Configuration |
| 5 | * Copyright (C) Christian Schulte, 2011-313 |
| 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 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| 21 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY |
| 22 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL |
| 23 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 24 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 25 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 29 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 | * |
| 31 | * $JOMC: RuntimeSpecification.java 4712 2013-01-02 13:56:12Z schulte $ |
| 32 | * |
| 33 | */ |
| 34 | // </editor-fold> |
| 35 | // SECTION-END |
| 36 | package org.jomc.ri.model; |
| 37 | |
| 38 | import java.lang.ref.Reference; |
| 39 | import java.lang.ref.WeakReference; |
| 40 | import java.util.Map; |
| 41 | import javax.xml.bind.annotation.XmlTransient; |
| 42 | import org.jomc.model.JavaTypeName; |
| 43 | import org.jomc.model.ModelObjectException; |
| 44 | import org.jomc.model.Specification; |
| 45 | import static org.jomc.ri.model.RuntimeModelObjects.BOOTSTRAP_CLASSLOADER_KEY; |
| 46 | import static org.jomc.ri.model.RuntimeModelObjects.classesByClassLoaderAndNameCache; |
| 47 | import static org.jomc.ri.model.RuntimeModelObjects.createMap; |
| 48 | |
| 49 | // SECTION-START[Documentation] |
| 50 | // <editor-fold defaultstate="collapsed" desc=" Generated Documentation "> |
| 51 | /** |
| 52 | * Runtime {@code Specification}. |
| 53 | * |
| 54 | * <dl> |
| 55 | * <dt><b>Identifier:</b></dt><dd>org.jomc.ri.model.RuntimeSpecification</dd> |
| 56 | * <dt><b>Name:</b></dt><dd>JOMC ⁑ RI ⁑ RuntimeSpecification</dd> |
| 57 | * <dt><b>Specifications:</b></dt> |
| 58 | * <dd>org.jomc.ri.model.RuntimeModelObject @ 1.2</dd> |
| 59 | * <dt><b>Abstract:</b></dt><dd>No</dd> |
| 60 | * <dt><b>Final:</b></dt><dd>No</dd> |
| 61 | * <dt><b>Stateless:</b></dt><dd>No</dd> |
| 62 | * </dl> |
| 63 | * |
| 64 | * @author <a href="mailto:cs@schulte.it">Christian Schulte</a> 1.2 |
| 65 | * @version 1.2 |
| 66 | */ |
| 67 | // </editor-fold> |
| 68 | // SECTION-END |
| 69 | // SECTION-START[Annotations] |
| 70 | // <editor-fold defaultstate="collapsed" desc=" Generated Annotations "> |
| 71 | @javax.annotation.Generated( value = "org.jomc.tools.SourceFileProcessor 1.4", comments = "See http://www.jomc.org/jomc/1.4/jomc-tools-1.4" ) |
| 72 | // </editor-fold> |
| 73 | // SECTION-END |
| 74 | public class RuntimeSpecification extends Specification implements RuntimeModelObject |
| 75 | { |
| 76 | // SECTION-START[RuntimeSpecification] |
| 77 | |
| 78 | /** Java type name. */ |
| 79 | @XmlTransient |
| 80 | private volatile JavaTypeName javaTypeName; |
| 81 | |
| 82 | /** |
| 83 | * Creates a new {@code RuntimeSpecification} instance by deeply copying a given {@code Specification} instance. |
| 84 | * |
| 85 | * @param specification The instance to copy. |
| 86 | * |
| 87 | * @throws NullPointerException if {@code specification} is {@code null}. |
| 88 | */ |
| 89 | public RuntimeSpecification( final Specification specification ) |
| 90 | { |
| 91 | super( specification ); |
| 92 | |
| 93 | if ( this.getAuthors() != null ) |
| 94 | { |
| 95 | this.setAuthors( RuntimeModelObjects.getInstance().copyOf( this.getAuthors() ) ); |
| 96 | } |
| 97 | if ( this.getDocumentation() != null ) |
| 98 | { |
| 99 | this.setDocumentation( RuntimeModelObjects.getInstance().copyOf( this.getDocumentation() ) ); |
| 100 | } |
| 101 | if ( this.getProperties() != null ) |
| 102 | { |
| 103 | this.setProperties( RuntimeModelObjects.getInstance().copyOf( this.getProperties() ) ); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * Gets the Java class of the specification for a given class loader. |
| 109 | * <p>This method queries an internal cache for a result object to return for the given argument values. If no |
| 110 | * cached result object is available, this method queries the super-class for a result object to return and caches |
| 111 | * the outcome of that query for use on successive calls.</p> |
| 112 | * <p><b>Note:</b><br/>Method {@code RuntimeModelObjects.clear()} must be used to synchronize the state of the |
| 113 | * internal cache with the state of the class loader, should the state of the class loader change.</p> |
| 114 | * |
| 115 | * @param classLoader The class loader to get the Java class from or {@code null}, to get the Java class from the |
| 116 | * platform's bootstrap class loader. |
| 117 | * |
| 118 | * @return The Java class of the specification or {@code null}, if the specification does not declare a class. |
| 119 | * |
| 120 | * @throws ClassNotFoundException if the Java class is not found. |
| 121 | * @throws ModelObjectException if parsing the name of the referenced type fails. |
| 122 | * |
| 123 | * @see #getClazz() |
| 124 | * @see RuntimeModelObjects#clear() |
| 125 | */ |
| 126 | @Override |
| 127 | public Class<?> getJavaClass( final ClassLoader classLoader ) |
| 128 | throws ModelObjectException, ClassNotFoundException |
| 129 | { |
| 130 | Class<?> javaClass = null; |
| 131 | |
| 132 | if ( this.getJavaTypeName() != null ) |
| 133 | { |
| 134 | synchronized ( classesByClassLoaderAndNameCache ) |
| 135 | { |
| 136 | ClassLoader classLoaderKey = classLoader; |
| 137 | if ( classLoaderKey == null ) |
| 138 | { |
| 139 | classLoaderKey = BOOTSTRAP_CLASSLOADER_KEY; |
| 140 | } |
| 141 | |
| 142 | Map<String, Reference<Class<?>>> map = classesByClassLoaderAndNameCache.get( classLoaderKey ); |
| 143 | |
| 144 | if ( map == null ) |
| 145 | { |
| 146 | map = createMap(); |
| 147 | classesByClassLoaderAndNameCache.put( classLoaderKey, map ); |
| 148 | } |
| 149 | |
| 150 | final Reference<Class<?>> reference = map.get( this.getJavaTypeName().getClassName() ); |
| 151 | |
| 152 | if ( reference != null ) |
| 153 | { |
| 154 | javaClass = reference.get(); |
| 155 | } |
| 156 | |
| 157 | if ( javaClass == null ) |
| 158 | { |
| 159 | javaClass = super.getJavaClass( classLoader ); |
| 160 | map.put( this.getJavaTypeName().getClassName(), new WeakReference<Class<?>>( javaClass ) ); |
| 161 | } |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | return javaClass; |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * Gets the Java type name of the type referenced by the specification. |
| 170 | * <p>This method queries an internal cache for a result object to return. If no cached result object is available, |
| 171 | * this method queries the super-class for a result object to return and caches the outcome of that query for use on |
| 172 | * successive calls.</p> |
| 173 | * <p><b>Note:</b><br/>Method {@code clear()} must be used to synchronize the state of the internal cache with the |
| 174 | * state of the instance, should the state of the instance change.</p> |
| 175 | * |
| 176 | * @return The Java type name of the type referenced by the specification or {@code null}, if the specification does |
| 177 | * not reference a type. |
| 178 | * |
| 179 | * @throws ModelObjectException if compiling the name of the referenced type to a {@code JavaTypeName} fails. |
| 180 | * |
| 181 | * @since 1.4 |
| 182 | * |
| 183 | * @see #getJavaTypeName() |
| 184 | * @see #clear() |
| 185 | */ |
| 186 | @Override |
| 187 | public JavaTypeName getJavaTypeName() throws ModelObjectException |
| 188 | { |
| 189 | if ( this.javaTypeName == null ) |
| 190 | { |
| 191 | this.javaTypeName = super.getJavaTypeName(); |
| 192 | } |
| 193 | |
| 194 | return this.javaTypeName; |
| 195 | } |
| 196 | |
| 197 | // SECTION-END |
| 198 | // SECTION-START[RuntimeModelObject] |
| 199 | public void gc() |
| 200 | { |
| 201 | this.gcOrClear( true, false ); |
| 202 | } |
| 203 | |
| 204 | public void clear() |
| 205 | { |
| 206 | this.javaTypeName = null; |
| 207 | this.gcOrClear( false, true ); |
| 208 | } |
| 209 | |
| 210 | private void gcOrClear( final boolean gc, final boolean clear ) |
| 211 | { |
| 212 | if ( this.getAuthors() instanceof RuntimeModelObject ) |
| 213 | { |
| 214 | if ( gc ) |
| 215 | { |
| 216 | ( (RuntimeModelObject) this.getAuthors() ).gc(); |
| 217 | } |
| 218 | if ( clear ) |
| 219 | { |
| 220 | ( (RuntimeModelObject) this.getAuthors() ).clear(); |
| 221 | } |
| 222 | } |
| 223 | if ( this.getDocumentation() instanceof RuntimeModelObject ) |
| 224 | { |
| 225 | if ( gc ) |
| 226 | { |
| 227 | ( (RuntimeModelObject) this.getDocumentation() ).gc(); |
| 228 | } |
| 229 | if ( clear ) |
| 230 | { |
| 231 | ( (RuntimeModelObject) this.getDocumentation() ).clear(); |
| 232 | } |
| 233 | } |
| 234 | if ( this.getProperties() instanceof RuntimeModelObject ) |
| 235 | { |
| 236 | if ( gc ) |
| 237 | { |
| 238 | ( (RuntimeModelObject) this.getProperties() ).gc(); |
| 239 | } |
| 240 | if ( clear ) |
| 241 | { |
| 242 | ( (RuntimeModelObject) this.getProperties() ).clear(); |
| 243 | } |
| 244 | } |
| 245 | } |
| 246 | |
| 247 | // SECTION-END |
| 248 | // SECTION-START[Constructors] |
| 249 | // <editor-fold defaultstate="collapsed" desc=" Generated Constructors "> |
| 250 | /** Creates a new {@code RuntimeSpecification} instance. */ |
| 251 | @javax.annotation.Generated( value = "org.jomc.tools.SourceFileProcessor 1.4", comments = "See http://www.jomc.org/jomc/1.4/jomc-tools-1.4" ) |
| 252 | public RuntimeSpecification() |
| 253 | { |
| 254 | // SECTION-START[Default Constructor] |
| 255 | super(); |
| 256 | // SECTION-END |
| 257 | } |
| 258 | // </editor-fold> |
| 259 | // SECTION-END |
| 260 | // SECTION-START[Dependencies] |
| 261 | // SECTION-END |
| 262 | // SECTION-START[Properties] |
| 263 | // SECTION-END |
| 264 | // SECTION-START[Messages] |
| 265 | // SECTION-END |
| 266 | } |