Source Code Cross Referenced for PolymorphIdNamingManager.java in  » Database-ORM » Speedo_1.4.5 » org » objectweb » speedo » naming » lib » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database ORM » Speedo_1.4.5 » org.objectweb.speedo.naming.lib 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * Copyright (C) 2001-2004 France Telecom R&D
003:         *
004:         * This library is free software; you can redistribute it and/or
005:         * modify it under the terms of the GNU Lesser General Public
006:         * License as published by the Free Software Foundation; either
007:         * version 2 of the License, or (at your option) any later version.
008:         *
009:         * This library is distributed in the hope that it will be useful,
010:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
011:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
012:         * Lesser General Public License for more details.
013:         *
014:         * You should have received a copy of the GNU Lesser General Public
015:         * License along with this library; if not, write to the Free Software
016:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
017:         */package org.objectweb.speedo.naming.lib;
018:
019:        import org.objectweb.jorm.api.PClassMapping;
020:        import org.objectweb.jorm.api.PException;
021:        import org.objectweb.jorm.api.PMapper;
022:        import org.objectweb.jorm.facility.naming.polymorphid.PolymorphIdBinderInfo;
023:        import org.objectweb.jorm.facility.naming.polymorphid.PolymorphIdMgrImpl;
024:        import org.objectweb.jorm.facility.naming.polymorphid.PolymorphIdPName;
025:        import org.objectweb.jorm.facility.naming.polymorphid.PolymorphRefNC;
026:        import org.objectweb.jorm.metainfo.api.Class;
027:        import org.objectweb.jorm.metainfo.api.ClassMapping;
028:        import org.objectweb.jorm.metainfo.api.ClassRef;
029:        import org.objectweb.jorm.metainfo.api.CommonClassMapping;
030:        import org.objectweb.jorm.metainfo.api.CompositeName;
031:        import org.objectweb.jorm.metainfo.api.GenClassMapping;
032:        import org.objectweb.jorm.metainfo.api.GenClassRef;
033:        import org.objectweb.jorm.metainfo.api.Manager;
034:        import org.objectweb.jorm.metainfo.api.MetaObject;
035:        import org.objectweb.jorm.metainfo.api.NameDef;
036:        import org.objectweb.jorm.metainfo.api.NameRef;
037:        import org.objectweb.jorm.metainfo.api.PrimitiveElement;
038:        import org.objectweb.jorm.metainfo.api.Reference;
039:        import org.objectweb.jorm.naming.api.PBinder;
040:        import org.objectweb.jorm.naming.api.PName;
041:        import org.objectweb.jorm.naming.api.PNameCoder;
042:        import org.objectweb.jorm.naming.api.PNamingContext;
043:        import org.objectweb.jorm.type.api.PType;
044:        import org.objectweb.jorm.type.api.PTypeSpace;
045:        import org.objectweb.perseus.cache.api.CacheManager;
046:        import org.objectweb.speedo.api.SpeedoException;
047:        import org.objectweb.speedo.api.SpeedoProperties;
048:        import org.objectweb.speedo.generation.jorm.JormMIMappingBuilder;
049:        import org.objectweb.speedo.mapper.api.JormFactory;
050:        import org.objectweb.speedo.metadata.SpeedoClass;
051:        import org.objectweb.speedo.metadata.SpeedoColumn;
052:        import org.objectweb.speedo.metadata.SpeedoExtension;
053:        import org.objectweb.speedo.metadata.SpeedoField;
054:        import org.objectweb.speedo.metadata.SpeedoIdentity;
055:        import org.objectweb.speedo.naming.api.MIBuilderHelper;
056:        import org.objectweb.speedo.naming.api.NamingManager;
057:        import org.objectweb.speedo.pm.api.POManagerFactoryItf;
058:        import org.objectweb.util.monolog.api.Logger;
059:
060:        import java.util.Collection;
061:        import java.util.Map;
062:        import java.util.Properties;
063:
064:        /**
065:         *
066:         * @author S.Chassande-Barrioz
067:         */
068:        public class PolymorphIdNamingManager implements  NamingManager {
069:
070:            /**
071:             * is the name of the composite name used for the identifiers in case of
072:             * container identifier management.
073:             */
074:            private final static String POLYMORH_ID_NAME = "org.objectweb.jorm.facility.naming.polymorphid.PolymorphId";
075:
076:            private final static String BINDER_CLASS_NAME = POLYMORH_ID_NAME
077:                    + "BinderInfo";
078:
079:            /**
080:             * is a name of field of the composite name used for the identifiers in case of
081:             * container identifier management.
082:             */
083:            private final static String POLYMORH_ID_OID = "objectId";
084:            /**
085:             * is a name of field of the composite name used for the identifiers in case of
086:             * container identifier management.
087:             */
088:            private final static String POLYMORH_ID_CID = "classId";
089:
090:            private final static String OID = "oid";
091:            private final static String CID = "cid";
092:
093:            /**
094:             * The manager of the naming used by the container (long, long). It
095:             * provides PBinder, PNamingContext since a class name.
096:             */
097:            protected PolymorphIdMgrImpl cIdManager = null;
098:
099:            private PMapper mapper;
100:            private Logger logger;
101:
102:            public PolymorphIdMgrImpl getcIdManager() throws PException {
103:                if (cIdManager == null) {
104:                    cIdManager = new PolymorphIdMgrImpl();
105:                    cIdManager.setLogger(logger);
106:                    cIdManager.init(mapper,
107:                            PClassMapping.CREATE_STRUCTURE_IF_NEEDED);
108:                }
109:                return cIdManager;
110:            }
111:
112:            // IMPLEMENTATION OF THE METHOD FROM THE NamingManager INTERFACE //
113:            //---------------------------------------------------------------//
114:            public boolean supportPNamingcontext() {
115:                return true;
116:            }
117:
118:            public Object encode(PName pn) throws PException {
119:                if (pn instanceof  PolymorphIdPName) {
120:                    return pn.getPNameManager().getPType().getJormName() + SEP
121:                            + pn.encodeString();
122:                }
123:                return null;
124:            }
125:
126:            public PName decode(PNameCoder pnc, Object oid,
127:                    java.lang.Class clazz, JormFactory jf) throws PException {
128:                if (oid instanceof  String) {
129:                    String stroid = (String) oid;
130:                    int idx = stroid.indexOf(SEP);
131:                    if (pnc != null) {
132:                        if (pnc instanceof  PolymorphIdBinderInfo
133:                                || pnc instanceof  PolymorphRefNC) {
134:                            if (idx != -1) {
135:                                //The oid contains the class name
136:                                return pnc.decodeString(stroid.substring(idx
137:                                        + SEP.length()));
138:                            } else {
139:                                //The oid must decoded directly
140:                                return pnc.decodeString(stroid);
141:                            }
142:
143:                        } else {
144:                            //The pnc is not a BasidBinder, then the oid cannot be managed
145:                            return null;
146:                        }
147:                    } else {
148:                        //No pnc specified
149:                        if (idx != -1) {
150:                            //The oid contains the class name
151:                            String fqcn = stroid.substring(0, idx);
152:                            ClassLoader cl = getClass().getClassLoader();
153:                            if (cl == null) {
154:                                cl = ClassLoader.getSystemClassLoader();
155:                            }
156:                            try {
157:                                pnc = jf.getPBinder(fqcn, cl);
158:                            } catch (Exception e) {
159:                            }
160:                            return (pnc instanceof  PolymorphIdBinderInfo
161:                                    || pnc instanceof  PolymorphRefNC ? pnc
162:                                    .decodeString(stroid.substring(idx
163:                                            + SEP.length())) : null);
164:                        } else {
165:                            //The oid cannot be managed
166:                            return null;
167:                        }
168:                    }
169:                }
170:                return null;
171:            }
172:
173:            public void setPMapper(PMapper mapper) {
174:                this .mapper = mapper;
175:            }
176:
177:            public void setPmf(POManagerFactoryItf pmf) {
178:
179:            }
180:
181:            public void setLogger(Logger logger) {
182:                this .logger = logger;
183:            }
184:
185:            public boolean canManage(SpeedoClass sc) {
186:                return sc.identity.strategy == SpeedoIdentity.DATASTORE_POLYMORPHID;
187:            }
188:
189:            public boolean canProvidePBinder(Object hints,
190:                    ClassLoader classLoader) {
191:                return BINDER_CLASS_NAME.equals(hints);
192:            }
193:
194:            public boolean canProvidePNamingContext(Object hints,
195:                    ClassLoader classLoader) {
196:                return canProvidePBinder(hints, classLoader);
197:            }
198:
199:            public PBinder getPBinder(String className, String hints,
200:                    ClassLoader classLoader, byte mappingStructureRule,
201:                    Map cn2binder, Map cn2pnc) throws PException {
202:                return getcIdManager().getPBinder(className);
203:            }
204:
205:            public PNamingContext getPNamingContext(String className,
206:                    String hints, ClassLoader classLoader,
207:                    byte mappingStructureRule, Map cn2binder, Map cn2pnc,
208:                    Manager miManager, PClassMapping pcm) throws PException {
209:                return getcIdManager().getRefNC(className);
210:            }
211:
212:            private void defineNameDef(NameDef nd, MetaObject owner,
213:                    MIBuilderHelper mibh, String prefix)
214:                    throws SpeedoException, PException {
215:                PrimitiveElement oid = mibh.createNameDefField(owner, prefix
216:                        + OID, PTypeSpace.LONG);
217:                PrimitiveElement cid = mibh.createNameDefField(owner, prefix
218:                        + CID, PTypeSpace.LONG);
219:                Manager manager = mibh.getManager(owner);
220:                CompositeName speedoidcn = getPolymorphIdCN(manager);
221:                NameRef nr = nd.createNameRef(speedoidcn);
222:                nr.addProjection(POLYMORH_ID_OID, oid.getName());
223:                nr.addProjection(POLYMORH_ID_CID, cid.getName());
224:            }
225:
226:            public void defineClassIdentifierNameDef(NameDef nd, Class jc,
227:                    SpeedoClass sc, ClassMapping cm, MIBuilderHelper mibh,
228:                    JormMIMappingBuilder mb, Collection createdMOs)
229:                    throws SpeedoException, PException {
230:                defineNameDef(nd, jc, mibh, "");
231:                mb.createClassIdentifierNameDefMapping(cm, nd, sc, mibh);
232:            }
233:
234:            public void defineClassReferenceNameDef(NameDef nd, ClassRef cr,
235:                    SpeedoField sf, SpeedoClass currentClass, ClassMapping cm,
236:                    MIBuilderHelper mibh, JormMIMappingBuilder mb)
237:                    throws SpeedoException, PException {
238:                String prefix = mibh
239:                        .getNameDefFieldPrefix(cr, false, false, sf);
240:                defineNameDef(nd, cr.getParent(), mibh, prefix);
241:                mb.createClassRefNameDefMapping(cm, nd, sf);
242:            }
243:
244:            public void defineClassReferenceNameDef(NameDef nd, ClassRef cr,
245:                    SpeedoField sf, SpeedoClass currentClass,
246:                    GenClassMapping gcm, MIBuilderHelper mibh,
247:                    JormMIMappingBuilder mb) throws SpeedoException, PException {
248:                String prefix = mibh.getNameDefFieldPrefix(cr, false, true, sf);
249:                defineNameDef(nd, cr.getParent(), mibh, prefix);
250:                mb.createClassRefNameDefMapping(gcm, nd, sf);
251:            }
252:
253:            public void defineGenClassIdentifierNameDef(NameDef nd,
254:                    GenClassRef gcr, SpeedoField sf, SpeedoClass currentClass,
255:                    GenClassMapping gcm, MIBuilderHelper mibh,
256:                    JormMIMappingBuilder mb) throws SpeedoException, PException {
257:                defineNameDef(nd, gcr, mibh, "");
258:                mb.createGenClassIdentifierNameDefMapping(gcm, nd, sf, mibh);
259:            }
260:
261:            public void defineGenClassReferenceNameDef(NameDef nd,
262:                    GenClassRef gcr, SpeedoField sf, SpeedoClass currentClass,
263:                    ClassMapping cm, MIBuilderHelper mibh,
264:                    JormMIMappingBuilder mb) throws SpeedoException, PException {
265:                //The polymorph id does not support the mapping
266:                // where the GC id is the source class id
267:                // then the field name contains the GCR name as prefix
268:                String prefix = gcr.getName() + "_";
269:                defineNameDef(nd, gcr, mibh, prefix);
270:                mb.createGenClassRefNameDefMapping(cm, nd, sf);
271:            }
272:
273:            public boolean needInheritanceDiscriminator(SpeedoClass sc)
274:                    throws SpeedoException {
275:                return false;
276:            }
277:
278:            private CompositeName getPolymorphIdCN(Manager manager) {
279:                CompositeName cn = manager.getCompositeName(POLYMORH_ID_NAME);
280:                if (cn == null) {
281:                    cn = manager.createCompositeName(POLYMORH_ID_NAME);
282:                    cn.createCompositeNameField(POLYMORH_ID_CID,
283:                            PTypeSpace.LONG, PType.NOSIZE, PType.NOSIZE);
284:                    cn.createCompositeNameField(POLYMORH_ID_OID,
285:                            PTypeSpace.LONG, PType.NOSIZE, PType.NOSIZE);
286:                }
287:                return cn;
288:            }
289:
290:            public void getJormNamingConfig(NameDef nd,
291:                    SpeedoClass targetClass, MetaObject sourceMO, String key,
292:                    Properties result) {
293:                result.setProperty(key, BINDER_CLASS_NAME);
294:            }
295:
296:            public String getPNameHints(SpeedoClass sc, NameDef nd) {
297:                return "null";
298:            }
299:
300:            public Object[] getPNameHints2(SpeedoClass sc, NameDef nd) {
301:                return new Object[] { PNH_NULL_VALUE };
302:            }
303:
304:            public String getGCPNameHints(SpeedoClass sc, NameDef nd) {
305:                return "null";
306:            }
307:
308:            public NamingManager.NamingField[] getNamingfields(SpeedoClass sc) {
309:                return null;
310:            }
311:
312:            public SpeedoColumn[] getDefaultColumn(SpeedoClass sc) {
313:                SpeedoColumn[] cols = new SpeedoColumn[] { new SpeedoColumn(),
314:                        new SpeedoColumn() };
315:                cols[0].name = CID;
316:                cols[0].targetField = CID;
317:                cols[1].name = OID;
318:                cols[1].targetField = OID;
319:                return cols;
320:            }
321:
322:            public void setCache(CacheManager cache) {
323:            }
324:        }
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