Source Code Cross Referenced for ClassPropertiesManager.java in  » Database-ORM » Speedo_1.4.5 » org » objectweb » speedo » mapper » 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.mapper.lib 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * Copyright (C) 2001-2005 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.mapper.lib;
018:
019:        import org.objectweb.jorm.api.PMapper;
020:        import org.objectweb.speedo.api.SpeedoProperties;
021:        import org.objectweb.speedo.mapper.api.ClassPropertyManager;
022:        import org.objectweb.speedo.mim.api.HomeItf;
023:        import org.objectweb.speedo.tools.StringReplace;
024:        import org.objectweb.util.monolog.api.BasicLevel;
025:        import org.objectweb.util.monolog.api.Logger;
026:
027:        import java.util.HashMap;
028:        import java.util.Iterator;
029:        import java.util.Map;
030:        import java.util.Properties;
031:        import java.util.regex.Pattern;
032:
033:        public class ClassPropertiesManager implements  SpeedoProperties {
034:
035:            public final static char FIELD_SEP = '#';
036:
037:            final Properties speedoProperties;
038:
039:            final HashMap name2prop;
040:
041:            final HashMap pattern2prop;
042:
043:            /**
044:             * key = property prefix
045:             * value = ClassProperty instance
046:             */
047:            final HashMap prefix2Impl;
048:
049:            /**
050:             * The mapper holding homes of the persistent classes
051:             */
052:            protected PMapper mapper = null;
053:
054:            protected Logger logger;
055:
056:            public ClassPropertiesManager() {
057:                speedoProperties = new Properties();
058:                name2prop = new HashMap();
059:                pattern2prop = new HashMap();
060:                prefix2Impl = new HashMap();
061:                addClassPropertyManager(new CPMCacheClassPolicy());
062:                addClassPropertyManager(new CPMShareablePolicy());
063:                addClassPropertyManager(new CPMTransactionLockingLevel());
064:                addClassPropertyManager(new CPMUserCachePolicy());
065:                addClassPropertyManager(new CPMPrefetchOnQuery());
066:                addClassPropertyManager(new CPMPrefetchOnExtent());
067:                addClassPropertyManager(new CPMPrefetchOnGenClass());
068:            }
069:
070:            public void addClassPropertyManager(ClassPropertyManager cpm) {
071:                prefix2Impl.put(cpm.getName(), cpm);
072:            }
073:
074:            /**
075:             * Sets all properties.
076:             * @param props
077:             */
078:            public void addProperties(Properties props) {
079:                if (props == null || props.size() == 0) {
080:                    return;
081:                }
082:                String[] classNames = mapper.getMappedClasses();
083:                boolean apply = classNames != null && classNames.length > 0;
084:                for (Iterator it = props.entrySet().iterator(); it.hasNext();) {
085:                    Map.Entry me = (Map.Entry) it.next();
086:                    Prop prop = createProperty((String) me.getKey(),
087:                            (String) me.getValue());
088:                    if (apply) { // && prop.patternIsRegExp
089:                        applyProperty(prop, classNames);
090:                    }
091:                }
092:            }
093:
094:            /**
095:             * Set a property
096:             * @param name is the property name
097:             * @param value is the property value
098:             */
099:            public void addProperty(String name, String value) {
100:                if (value == null || value.length() == 0) {
101:                    removeProperty(name);
102:                } else {
103:                    Prop prop = createProperty(name, value);
104:                    if (prop.patternIsRegExp) {
105:                        String[] classNames = mapper.getMappedClasses();
106:                        if (classNames != null && classNames.length > 0) {
107:                            applyProperty(prop, classNames);
108:                        }
109:                    }
110:                }
111:            }
112:
113:            /**
114:             * Applies current properties to a home of a persistent class.
115:             * @param sh is the home of the persistent class.
116:             */
117:            public void applyProperties(HomeItf sh) {
118:                if (pattern2prop.size() == 0) {
119:                    for (Iterator it = prefix2Impl.values().iterator(); it
120:                            .hasNext();) {
121:                        ClassPropertyManager cpm = (ClassPropertyManager) it
122:                                .next();
123:                        cpm.applyDefault(sh, speedoProperties, logger);
124:                    }
125:                    return;
126:                }
127:                String path = sh.getPath();
128:                for (Iterator iter = pattern2prop.values().iterator(); iter
129:                        .hasNext();) {
130:                    Prop prop = (Prop) iter.next();
131:                    if (prop.match(path)) {
132:                        prop.applyProperty(sh);
133:                    }
134:                }
135:            }
136:
137:            /**
138:             * Applies current properties to a home of a generic persistent class.
139:             * @param gcHome is the home of the persistent class.
140:             */
141:            public void applyProperties(HomeItf gcHome, HomeItf refHome) {
142:                if (pattern2prop.size() == 0) {
143:                    for (Iterator it = prefix2Impl.values().iterator(); it
144:                            .hasNext();) {
145:                        ClassPropertyManager cpm = (ClassPropertyManager) it
146:                                .next();
147:                        cpm.applyDefault(gcHome, refHome, speedoProperties,
148:                                logger);
149:                    }
150:                    return;
151:                }
152:                String path = gcHome.getPath();
153:                for (Iterator iter = pattern2prop.values().iterator(); iter
154:                        .hasNext();) {
155:                    Prop prop = (Prop) iter.next();
156:                    if (prop.match(path)) {
157:                        prop.applyProperty(gcHome, refHome);
158:                    }
159:                }
160:            }
161:
162:            public Properties getProperties() {
163:                return speedoProperties;
164:            }
165:
166:            private synchronized Prop createProperty(String name, String value) {
167:                if (logger != null && logger.isLoggable(BasicLevel.DEBUG)) {
168:                    logger.log(BasicLevel.DEBUG, "Set property " + name + "="
169:                            + value);
170:                }
171:                return new Prop(name, value);
172:            }
173:
174:            private synchronized void removeProperty(String name) {
175:                if (logger != null && logger.isLoggable(BasicLevel.DEBUG)) {
176:                    logger.log(BasicLevel.DEBUG, "Remove property " + name);
177:                }
178:                speedoProperties.remove(name);
179:                Prop oldProp = (Prop) name2prop.remove(name);
180:                if (oldProp != null && oldProp.pa != null) {
181:                    pattern2prop.remove(oldProp.pa);
182:                }
183:            }
184:
185:            /**
186:             * Internal representation of a property.
187:             * A property has a pattern if it follows this profile of 
188:             * expression: xxx(yyy) where xxx is the prefix and yyy is the pattern 
189:             * characterizing class names.
190:             * 
191:             * @author S.Chassande-Barrioz
192:             */
193:            private final class Prop {
194:                /**
195:                 * The name of the property
196:                 */
197:                public final String name;
198:                /**
199:                 * The value of the property
200:                 */
201:                public final String value;
202:                public final String prefix;
203:                public final String pattern;
204:                public final boolean patternOnField;
205:                public final boolean patternIsRegExp;
206:                public final Pattern pa;
207:                public ClassPropertyManager cpm;
208:
209:                public Prop(String n, String v) {
210:                    this .name = n;
211:                    this .value = v;
212:                    speedoProperties.put(name, value);
213:                    Prop oldProp = (Prop) name2prop.put(name, this );
214:                    if (oldProp != null && oldProp.pa != null) {
215:                        pattern2prop.remove(oldProp.pa);
216:                    }
217:                    int idx1 = name.indexOf('(');
218:                    int idx2 = name.indexOf(')');
219:                    if (idx2 > idx1 && idx1 > 0) {
220:                        this .prefix = name.substring(0, idx1);
221:                        cpm = (ClassPropertyManager) prefix2Impl
222:                                .get(this .prefix);
223:                        this .pattern = name.substring(idx1 + 1, idx2);
224:                        this .patternIsRegExp = this .pattern != null
225:                                && (this .pattern.indexOf('*') != -1 || this .pattern
226:                                        .indexOf('?') != -1);
227:                        this .patternOnField = pattern.indexOf(FIELD_SEP) > 0;
228:                        if (this .patternIsRegExp) {
229:                            this .pa = Pattern.compile(StringReplace
230:                                    .toJavaPattern(this .pattern));
231:                            pattern2prop.put(pa, this );
232:                        } else {
233:                            this .pa = null;
234:                        }
235:                    } else {
236:                        this .prefix = null;
237:                        this .pattern = null;
238:                        this .patternOnField = false;
239:                        this .patternIsRegExp = false;
240:                        this .pa = null;
241:                        this .cpm = null;
242:                        if (idx1 == -1 && idx2 == -1) {
243:                            //no pattern and no prefix
244:                        } else if (idx1 >= idx2 && logger != null) {
245:                            logger.log(BasicLevel.WARN, "Property '" + name
246:                                    + "' is malformed");
247:                        }
248:                    }
249:                }
250:
251:                public boolean match(String path) {
252:                    boolean match = patternIsRegExp
253:                            && pa.matcher(path).matches();
254:                    if (match && logger != null
255:                            && logger.isLoggable(BasicLevel.DEBUG)) {
256:                        logger.log(BasicLevel.DEBUG, "Property '" + name
257:                                + "' matches the pattern '" + path
258:                                + "', value=" + value);
259:                    }
260:                    return match;
261:                }
262:
263:                public void applyProperty(HomeItf sh) {
264:                    if (cpm == null) {
265:                        cpm = (ClassPropertyManager) prefix2Impl.get(prefix);
266:                    }
267:                    if (cpm == null) {
268:                        logger.log(BasicLevel.WARN,
269:                                "Cannot apply the property '" + name + "' to '"
270:                                        + sh.getPath() + "': " + "\n\tprefix= "
271:                                        + prefix + "\nprefix2Impl="
272:                                        + prefix2Impl);
273:                    } else {
274:                        cpm.applyProperty(name, value, sh, speedoProperties,
275:                                logger);
276:                    }
277:                }
278:
279:                public void applyProperty(HomeItf gcHome, HomeItf refHome) {
280:                    if (cpm == null) {
281:                        cpm = (ClassPropertyManager) prefix2Impl.get(prefix);
282:                    }
283:                    if (cpm == null) {
284:                        logger.log(BasicLevel.WARN,
285:                                "Cannot apply the property '" + name + "' to '"
286:                                        + gcHome.getPath() + "'.");
287:                    } else {
288:                        cpm.applyProperty(name, value, gcHome, refHome,
289:                                speedoProperties, logger);
290:                    }
291:                }
292:            }
293:
294:            /**
295:             * Applies a property on known persistent classes
296:             * @param prop is the property to apply
297:             * @param classNames is the list of known persistent classes
298:             */
299:            private void applyProperty(final Prop prop,
300:                    final String[] classNames) {
301:                if (prop.pattern != null) {
302:                    return;
303:                }
304:                //Iterator over each konwn class to apply property if the pattern match
305:                for (int i = 0; i < classNames.length; i++) {
306:                    if (prop.patternOnField) {
307:                        //Fetch list of fields belong the class
308:                        HomeItf sh = (HomeItf) mapper.lookup(classNames[i]);
309:                        //TODO: provide in HomeItf (PClassMapping maybe) a new method
310:                        // returning the list of persistent field.
311:                        String[] fieldNames = new String[0]; //sh.get ...
312:                        for (int j = 0; j < fieldNames.length; j++) {
313:                            //build the path from the class name and the field name
314:                            String path = classNames[i] + FIELD_SEP
315:                                    + fieldNames[j];
316:                            if (prop.match(path)) {
317:                                //The path matches
318:                                HomeItf subHome;
319:                                try {
320:                                    //Try to find the home of the gen clas if the field
321:                                    // corresponds to a genclass reference
322:                                    subHome = (HomeItf) sh
323:                                            .getGenClassMapping(fieldNames[i]);
324:                                } catch (UnsupportedOperationException e) {
325:                                    //The field is not a reference to gen class
326:                                    subHome = sh;
327:                                }
328:                                //apply the property on the home
329:                                prop.applyProperty(subHome);
330:                            }
331:                        }
332:                    } else if (prop.match(classNames[i])) {
333:                        //the property is not for a field and matches to the class name
334:                        String path = classNames[i];
335:                        //find the home corresponding to the class name
336:                        HomeItf sh = (HomeItf) mapper.lookup(path);
337:                        //apply the property on the home
338:                        prop.applyProperty(sh);
339:                    }
340:                }
341:            }
342:        }
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