Source Code Cross Referenced for EntityCmpDesc.java in  » J2EE » JOnAS-4.8.6 » org » objectweb » jonas_ejb » deployment » api » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » JOnAS 4.8.6 » org.objectweb.jonas_ejb.deployment.api 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * JOnAS: Java(TM) Open Application Server
003:         * Copyright (C) 1999-2004 Bull S.A.
004:         * Contact: jonas-team@objectweb.org
005:         *
006:         * This library is free software; you can redistribute it and/or
007:         * modify it under the terms of the GNU Lesser General Public
008:         * License as published by the Free Software Foundation; either
009:         * version 2.1 of the License, or any later version.
010:         *
011:         * This library is distributed in the hope that it will be useful,
012:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014:         * Lesser General Public License for more details.
015:         *
016:         * You should have received a copy of the GNU Lesser General Public
017:         * License along with this library; if not, write to the Free Software
018:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
019:         * USA
020:         *
021:         * --------------------------------------------------------------------------
022:         * $Id: EntityCmpDesc.java 6677 2005-04-29 21:35:54Z ashah $
023:         * --------------------------------------------------------------------------
024:         */package org.objectweb.jonas_ejb.deployment.api;
025:
026:        import java.lang.reflect.Field;
027:        import java.lang.reflect.Modifier;
028:        import java.util.HashMap;
029:        import java.util.Iterator;
030:
031:        import org.objectweb.jonas_ejb.deployment.xml.AssemblyDescriptor;
032:        import org.objectweb.jonas_ejb.deployment.xml.Entity;
033:        import org.objectweb.jonas_ejb.deployment.xml.CmpField;
034:        import org.objectweb.jonas_ejb.deployment.xml.JonasEntity;
035:        import org.objectweb.jonas_ejb.deployment.xml.JdbcMapping;
036:        import org.objectweb.jonas_ejb.lib.BeanNaming;
037:        import org.objectweb.jonas_lib.deployment.api.DeploymentDescException;
038:        import org.objectweb.jonas_lib.deployment.xml.JLinkedList;
039:
040:        /**
041:         * Base class to hold meta-information related to an entity of type CMP.
042:         * @author Christophe Ney [cney@batisseurs.com] : Initial developer
043:         * @author Helene Joanin
044:         * @author Jerome Camilleri : automatic PK
045:         */
046:        public abstract class EntityCmpDesc extends EntityDesc {
047:
048:            protected HashMap fieldDesc = new HashMap();
049:            protected String primaryKeyField = null;
050:            protected String jdbcAutomaticPkFieldName = null;
051:
052:            /**
053:             * constructor to be used by parent node.
054:             * @param classLoader class loader to use to laod bean's classes
055:             * @param ent entity in the standard deployment descriptor
056:             * @param asd assembly-descriptor in the standard deployment descriptor
057:             * @param jEnt jonas-entity in the JOnAS deployment descriptor
058:             * @param fileName jar or directory containing ejb
059:             * @throws DeploymentDescException in error case.
060:             */
061:            public EntityCmpDesc(ClassLoader classLoader, Entity ent,
062:                    AssemblyDescriptor asd, JonasEntity jEnt,
063:                    JLinkedList jMDRList, String fileName)
064:                    throws DeploymentDescException {
065:
066:                super (classLoader, ent, asd, jEnt, jMDRList, fileName);
067:
068:                // field descriptors for persistent fields
069:                for (Iterator i = ent.getCmpFieldList().iterator(); i.hasNext();) {
070:                    String fn = ((CmpField) i.next()).getFieldName();
071:                    FieldDesc fd = this .newFieldDescInstance();
072:                    fd.setName(fn);
073:                    fd.setPrimaryKey(false);
074:                    fieldDesc.put(fn, fd);
075:
076:                }
077:
078:                // jdbc pk auto field name
079:                JdbcMapping jm = jEnt.getJdbcMapping();
080:                if ((jm != null) && (jm.getJdbcAutomaticPkFieldName() != null)) {
081:                    if (jm.getJdbcAutomaticPkFieldName().length() != 0) {
082:                        jdbcAutomaticPkFieldName = jm
083:                                .getJdbcAutomaticPkFieldName();
084:                    }
085:                }
086:                if (jdbcAutomaticPkFieldName == null) {
087:                    // Default value
088:                    jdbcAutomaticPkFieldName = "JPK_";
089:                }
090:
091:                if (isUndefinedPK()) { // Automatic PK
092:                    // If Primary Field is not declared (auto generated key field)
093:                    primaryKeyField = "JONASAUTOPKFIELD";
094:                } else if (ent.getPrimkeyField() != null) {
095:                    // primary key field
096:                    primaryKeyField = ent.getPrimkeyField();
097:                    FieldDesc fd = (FieldDesc) fieldDesc.get(primaryKeyField);
098:                    if (fd == null) {
099:                        throw new DeploymentDescException("primkey-field "
100:                                + primaryKeyField
101:                                + " is not listed as cmp-field in bean "
102:                                + this .ejbName);
103:                    }
104:                    fd.setPrimaryKey(true);
105:                } else {
106:                    // public fields of primary key class
107:                    Field[] pcf = primaryKeyClass.getFields();
108:                    for (int i = 0; i < pcf.length; i++) {
109:                        if (Modifier.isPublic(pcf[i].getModifiers())) {
110:                            String pn = pcf[i].getName();
111:                            // exclude serialVersionUID field for jdk1.2.1 on solaris and
112:                            // exclude JProbe$ for JProbe using
113:                            if (!pn.equals("serialVersionUID")
114:                                    && !pn.startsWith("JProbe$")) {
115:                                FieldDesc fd = (FieldDesc) fieldDesc.get(pn);
116:                                if (fd == null) {
117:                                    throw new DeploymentDescException(
118:                                            "public field "
119:                                                    + pn
120:                                                    + " of primkey-class is not listed as cmp-field in bean "
121:                                                    + this .ejbName);
122:                                }
123:                                fd.setPrimaryKey(true);
124:                            }
125:                        }
126:                    }
127:                }
128:                String packageName = BeanDesc.GENERATED_PREFIX
129:                        + BeanNaming.getPackageName(getEjbClass().getName());
130:                derivedBeanName = new String("JOnAS" + getIdentifier() + "Bean");
131:                fullDerivedBeanName = BeanNaming.getClassName(packageName,
132:                        derivedBeanName);
133:
134:                // automatic-pk
135:                // used of specific tag automatic-pk is deprecated so nothing in this code was about jdbc-mapping
136:                String primkeytype = ent.getPrimKeyClass();
137:                if ((jm != null) && (jm.getAutomaticPk() != null)) {
138:                    // optional parameter automatic-pk
139:                    jdbcAutomaticPk = jm.getAutomaticPk().equalsIgnoreCase(
140:                            "true");
141:                    if (jdbcAutomaticPk && pkObjectType) {
142:                        // You can't use specific tag 'automatic-pk' with prim-key-type=java.lang.Object
143:                        throw new DeploymentDescException(
144:                                "Don't use specific tag 'automatic-pk' with prim-key-type=java.lang.Object in bean "
145:                                        + ent.getEjbName());
146:                    }
147:                }
148:                if (pkObjectType && ent.getPrimkeyField() != null) {
149:                    throw new DeploymentDescException(
150:                            "'prim-key-field' must not be set if your prim-key-type was java.lang.Object in bean "
151:                                    + ent.getEjbName());
152:                }
153:                if (this .isAutomaticPk()) { // Check if prim-key-class type is Integer or java.lang.Object
154:                    if (!(primkeytype.equalsIgnoreCase("java.lang.Integer") || primkeytype
155:                            .equalsIgnoreCase("Integer"))) {
156:                        throw new DeploymentDescException(
157:                                "You must used java.lang.Integer type for your auto-generate primary key field in bean "
158:                                        + ent.getEjbName());
159:                    }
160:                }
161:            }
162:
163:            /**
164:             * Get descriptor for a given field name
165:             * Used by GenIC
166:             * @param fieldName Name of the field
167:             * @return Descriptor for the given field or null
168:             */
169:            public FieldDesc getCmpFieldDesc(String fieldName) {
170:                return (FieldDesc) fieldDesc.get(fieldName);
171:            }
172:
173:            /**
174:             * Indicate if the primary key field is only one field with a primary-key-field
175:             * defined in the DD.
176:             * @return true if the primary key field is only one field
177:             *         with a primary-key-field defined in the DD.
178:             */
179:            public boolean hasSimplePkField() {
180:                return primaryKeyField != null;
181:            }
182:
183:            // TODO remove this method and keep only the hasSimplePkField method
184:            public boolean hasPrimaryKeyField() {
185:                return hasSimplePkField();
186:            }
187:
188:            /**
189:             * Get the primary key field for the entity.
190:             * @return Field for the primary key
191:             */
192:            public FieldDesc getSimplePkField() {
193:                FieldDesc fd = (FieldDesc) fieldDesc
194:                        .get(getSimplePkFieldName());
195:                return fd;
196:            }
197:
198:            /**
199:             * Get the primary key field name for the entity.
200:             * @return Field for the primary key
201:             */
202:            public String getSimplePkFieldName() {
203:                if (primaryKeyField == null) {
204:                    throw new Error("No primary key field defined for bean "
205:                            + this .ejbName);
206:                }
207:                return primaryKeyField;
208:            }
209:
210:            // TODO remove this method and keep only the getSimplePkFieldName() method
211:            public String getPrimaryKeyFieldName() {
212:                return getSimplePkFieldName();
213:            }
214:
215:            /**
216:             * Get the associated field for auto genarated pk field specify by user
217:             * @return Name of the field where automatic pk bean is stored
218:             */
219:            public String getJdbcAutomaticPkFieldName() {
220:                return jdbcAutomaticPkFieldName;
221:            }
222:
223:            public Iterator getCmpFieldDescIterator() {
224:                return fieldDesc.values().iterator();
225:            }
226:
227:            /**
228:             * String representation of the object for test purpose
229:             * @return String representation of this object
230:             */
231:            public String toString() {
232:                StringBuffer ret = new StringBuffer();
233:                ret.append(super .toString());
234:                for (Iterator i = fieldDesc.keySet().iterator(); i.hasNext();) {
235:                    String f = (String) i.next();
236:                    FieldDesc fd = (FieldDesc) fieldDesc.get(f);
237:                    ret.append("\ngetCmpFieldDesc(" + f + ")="
238:                            + fd.getClass().getName());
239:                    ret.append(fd.toString());
240:                }
241:                if (hasPrimaryKeyField()) {
242:                    ret.append("\ngetPrimaryKeyField()="
243:                            + getPrimaryKeyFieldName());
244:                }
245:                return ret.toString();
246:            }
247:
248:            /**
249:             * factory method for field descriptors
250:             * @return a FieldDesc.
251:             */
252:            protected FieldDesc newFieldDescInstance() {
253:                return new FieldJdbcDesc();
254:            }
255:        }
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