I am attempting to instantiate and fill my own PersistentCollection. However, when I do so, I get an NPE on the collectionSnapshot contained within the Persistent Collection.
I am writing a method which takes a custom PersistentCollection and finds records meeting certain criteria. In this example, the criteria is records that have a certain date. The client provided the PersistentCollection and the date to my method. I then loop through the collection finding records meeting the criteria and return a new PersistentCollection that contains only the records meeting the criteria.
However, when I try to call getSize() on the PersistentCollection that is returned from my method, I get the NPE. Do I need to initialize the collectionSnapshot somehow? I looked through the source code and didn't see an API to do that. It seems like the collectionSnapshot is maintained internally.
Thanks in advance.
A
Hibernate version:
3.0.2
Mapping documents:
N/A
Code between sessionFactory.openSession() and session.close():
Code:
public StudentVaccinationCollection getVaccinationsByDate(Object collection, Date date)
{
//These next 2 lines are how I create the PersistentCollection
StudentVaccinationCollection coll = new StudentVaccinationCollection(getSession());
coll = (StudentVaccinationCollection)coll.wrap(getSession(), (Map)collection);
Set set = ((StudentVaccinationCollection) collection).entrySet();
for (Iterator iterator = set.iterator(); iterator.hasNext();)
{
Map.Entry entry = (Map.Entry) iterator.next();
StudentVaccination sv = (StudentVaccination) entry.getValue();
if (sdf.format(sv.getVaccinationDate()).equals(sdf.format(date)))
{
Long id = new Long(sv.getStudentVaccId());
coll.put(id, sv);
}
}
return coll;
}
Full stack trace of any exception that occurs:Code:
java.lang.NullPointerException
at org.hibernate.collection.AbstractPersistentCollection.write(AbstractPersistentCollection.java:62)
at org.hibernate.collection.PersistentMap.put(PersistentMap.java:130)
at com.maximus.schoolmax.health.StudentVaccinationCollection.getVaccinationsByDate(StudentVaccinationCollection.java:129)
at com.maximus.schoolmax.student.TestStudentModel.validateStudent(TestStudentModel.java:343)
at com.maximus.schoolmax.student.TestStudentModel.readStudentByExtStudentNumber(TestStudentModel.java:230)
at com.maximus.schoolmax.student.TestStudentModel.testStudent(TestStudentModel.java:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at com.intellij.rt.execution.junit2.JUnitStarter.main(JUnitStarter.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:78)
Name and version of the database you are using:Code:
N/A
The generated SQL (show_sql=true):Code:
N/A
Debug level Hibernate log excerpt:Code:
09:26:44,445 INFO Environment:464 - Hibernate 3.0.2
09:26:44,455 INFO Environment:477 - hibernate.properties not found
09:26:44,455 INFO Environment:510 - using CGLIB reflection optimizer
09:26:44,455 INFO Environment:540 - using JDK 1.4 java.sql.Timestamp handling
09:26:44,545 INFO Configuration:1160 - configuring from resource: /hibernate.cfg.xml
09:26:44,645 INFO Configuration:1131 - Configuration resource: /hibernate.cfg.xml
09:26:45,746 INFO Configuration:441 - Mapping resource: com/maximus/schoolmax/health/model/Vaccination.hbm.xml
09:26:45,917 INFO HbmBinder:258 - Mapping class: com.maximus.schoolmax.health.model.Vaccination -> ENUM_HE_VACCINATIONS
09:26:45,947 INFO Configuration:441 - Mapping resource: com/maximus/schoolmax/health/model/VaccinationExtensions.hbm.xml
09:26:45,997 INFO HbmBinder:258 - Mapping class: com.maximus.schoolmax.health.model.VaccinationExtensions -> HE_VACC_EXTENSIONS
09:26:45,997 INFO Configuration:441 - Mapping resource: com/maximus/schoolmax/health/model/VaccinationAttributes.hbm.xml
09:26:46,037 INFO HbmBinder:258 - Mapping class: com.maximus.schoolmax.health.model.VaccinationAttributes -> HE_VACC_ATTRIBUTES
09:26:46,117 INFO Configuration:441 - Mapping resource: com/maximus/schoolmax/health/model/Exemption.hbm.xml
09:26:46,157 INFO HbmBinder:258 - Mapping class: com.maximus.schoolmax.health.model.Exemption -> ENUM_HE_EXEMPTIONS
09:26:46,167 INFO Configuration:441 - Mapping resource: com/maximus/schoolmax/health/model/StudentVaccination.hbm.xml
09:26:46,187 INFO HbmBinder:258 - Mapping class: com.maximus.schoolmax.health.model.StudentVaccination -> ST_STUDENT_VACCINATION
09:26:46,197 INFO Configuration:441 - Mapping resource: com/maximus/schoolmax/health/model/StudentVaccExemption.hbm.xml
09:26:46,227 INFO HbmBinder:258 - Mapping class: com.maximus.schoolmax.health.model.StudentVaccExemption -> ST_STUDENT_VACC_EXEMPTION
09:26:46,227 INFO Configuration:441 - Mapping resource: com/maximus/schoolmax/student/model/Student.hbm.xml
09:26:46,257 INFO HbmBinder:258 - Mapping class: com.maximus.schoolmax.student.model.Student -> CE_FAMILY_MEMBER
09:26:46,257 INFO Configuration:1272 - Configured SessionFactory: null
09:26:46,257 INFO Configuration:852 - processing extends queue
09:26:46,257 INFO Configuration:856 - processing collection mappings
09:26:46,257 INFO HbmBinder:1974 - Mapping collection: com.maximus.schoolmax.health.model.Vaccination.customAttributes -> HE_VACC_ATTRIBUTES
09:26:46,257 INFO HbmBinder:1974 - Mapping collection: com.maximus.schoolmax.student.model.Student.vaccinations -> ST_STUDENT_VACCINATION
09:26:46,267 INFO HbmBinder:1974 - Mapping collection: com.maximus.schoolmax.student.model.Student.exemptions -> ST_STUDENT_VACC_EXEMPTION
09:26:46,267 INFO Configuration:865 - processing association property references
09:26:46,267 INFO Configuration:894 - processing foreign key constraints
09:26:46,277 INFO DriverManagerConnectionProvider:41 - Using Hibernate built-in connection pool (not for production use!)
09:26:46,277 INFO DriverManagerConnectionProvider:42 - Hibernate connection pool size: 1
09:26:46,277 INFO DriverManagerConnectionProvider:45 - autocommit mode: false
09:26:46,287 INFO DriverManagerConnectionProvider:80 - using driver: oracle.jdbc.driver.OracleDriver at URL: jdbc:oracle:thin:@10.200.110.50:1521:sazdb1
09:26:46,287 INFO DriverManagerConnectionProvider:86 - connection properties: {user=smax_cycle9, password=****}
09:26:46,728 INFO SettingsFactory:71 - RDBMS: Oracle, version: Oracle Database 10g Release 10.1.0.3.0 - Production
09:26:46,738 INFO SettingsFactory:72 - JDBC driver: Oracle JDBC driver, version: 10.1.0.2.0
09:26:46,748 INFO Dialect:92 - Using dialect: org.hibernate.dialect.Oracle9Dialect
09:26:46,758 INFO SettingsFactory:122 - JDBC batch size: 15
09:26:46,758 INFO SettingsFactory:125 - JDBC batch updates for versioned data: disabled
09:26:46,768 INFO SettingsFactory:130 - Scrollable result sets: enabled
09:26:46,768 INFO SettingsFactory:138 - JDBC3 getGeneratedKeys(): disabled
09:26:46,768 INFO SettingsFactory:150 - Aggressive release : disabled
09:26:46,768 INFO SettingsFactory:166 - Default batch fetch size: 1
09:26:46,768 INFO SettingsFactory:170 - Generate SQL with comments: disabled
09:26:46,768 INFO SettingsFactory:174 - Order SQL updates by primary key: disabled
09:26:46,778 INFO SettingsFactory:312 - Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
09:26:46,778 INFO ASTQueryTranslatorFactory:21 - Using ASTQueryTranslatorFactory
09:26:46,778 INFO SettingsFactory:182 - Query language substitutions: {}
09:26:46,788 INFO TransactionFactoryFactory:31 - Using default transaction strategy (direct JDBC transactions)
09:26:46,788 INFO TransactionManagerLookupFactory:33 - No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)
09:26:46,788 INFO SettingsFactory:191 - Automatic flush during beforeCompletion(): disabled
09:26:46,788 INFO SettingsFactory:195 - Automatic session close at end of transaction: disabled
09:26:46,788 INFO SettingsFactory:201 - Second-level cache: enabled
09:26:46,788 INFO SettingsFactory:205 - Query cache: disabled
09:26:46,788 INFO SettingsFactory:299 - Cache provider: org.hibernate.cache.EhCacheProvider
09:26:46,798 INFO SettingsFactory:220 - Optimize cache for minimal puts: disabled
09:26:46,798 INFO SettingsFactory:229 - Structured second-level cache entries: enabled
09:26:46,808 INFO SettingsFactory:249 - Echoing all SQL to stdout
09:26:46,808 INFO SettingsFactory:253 - Statistics: disabled
09:26:46,808 INFO SettingsFactory:257 - Deleted entity synthetic identifier rollback: disabled
09:26:46,808 INFO SettingsFactory:271 - Default entity-mode: pojo
09:26:46,928 INFO SessionFactoryImpl:148 - building session factory
09:26:46,958 WARN Configurator:126 - No configuration found. Configuring ehcache from ehcache-failsafe.xml found in the classpath: jar:file:/C:/hibernate-3.0/lib/ehcache-1.1.jar!/ehcache-failsafe.xml
09:26:47,669 INFO SessionFactoryObjectFactory:82 - Not binding factory to JNDI, no JNDI name configured
09:26:47,669 INFO SessionFactoryImpl:374 - Checking 0 named queries
Hibernate: select vaccinatio0_.VACCINATION_ID as VACCINAT1_, vaccinatio0_.DISTRICT_NUMBER as DISTRICT2_0_, vaccinatio0_.DESCRIPTION as DESCRIPT3_0_, vaccinatio0_.IS_ACTIVE_IND as IS4_0_, vaccinatio0_.MESSAGE_KEY as MESSAGE5_0_, vaccinatio0_.NAME as NAME0_, vaccinatio0_.ORDER_DEFAULT as ORDER7_0_, vaccinatio0_.REPORT_LABEL as REPORT8_0_, vaccinatio0_.VALUE as VALUE0_, vaccinatio0_.UPDATED_BY as UPDATED10_0_, vaccinatio0_.UPDATED_TS as UPDATED11_0_ from ENUM_HE_VACCINATIONS vaccinatio0_
Hibernate: select customattr0_.VACCINATION_ID as VACCINAT5___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1___, customattr0_.VACC_EXT_ID as VACC6___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1_0_, customattr0_.VALUE as VALUE2_0_, customattr0_.UPDATED_BY as UPDATED3_2_0_, customattr0_.UPDATED_TS as UPDATED4_2_0_, customattr0_.VACCINATION_ID as VACCINAT5_2_0_, customattr0_.VACC_EXT_ID as VACC6_2_0_ from HE_VACC_ATTRIBUTES customattr0_ where customattr0_.VACCINATION_ID=?
Hibernate: select customattr0_.VACCINATION_ID as VACCINAT5___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1___, customattr0_.VACC_EXT_ID as VACC6___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1_0_, customattr0_.VALUE as VALUE2_0_, customattr0_.UPDATED_BY as UPDATED3_2_0_, customattr0_.UPDATED_TS as UPDATED4_2_0_, customattr0_.VACCINATION_ID as VACCINAT5_2_0_, customattr0_.VACC_EXT_ID as VACC6_2_0_ from HE_VACC_ATTRIBUTES customattr0_ where customattr0_.VACCINATION_ID=?
Hibernate: select customattr0_.VACCINATION_ID as VACCINAT5___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1___, customattr0_.VACC_EXT_ID as VACC6___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1_0_, customattr0_.VALUE as VALUE2_0_, customattr0_.UPDATED_BY as UPDATED3_2_0_, customattr0_.UPDATED_TS as UPDATED4_2_0_, customattr0_.VACCINATION_ID as VACCINAT5_2_0_, customattr0_.VACC_EXT_ID as VACC6_2_0_ from HE_VACC_ATTRIBUTES customattr0_ where customattr0_.VACCINATION_ID=?
Hibernate: select customattr0_.VACCINATION_ID as VACCINAT5___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1___, customattr0_.VACC_EXT_ID as VACC6___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1_0_, customattr0_.VALUE as VALUE2_0_, customattr0_.UPDATED_BY as UPDATED3_2_0_, customattr0_.UPDATED_TS as UPDATED4_2_0_, customattr0_.VACCINATION_ID as VACCINAT5_2_0_, customattr0_.VACC_EXT_ID as VACC6_2_0_ from HE_VACC_ATTRIBUTES customattr0_ where customattr0_.VACCINATION_ID=?
Hibernate: select customattr0_.VACCINATION_ID as VACCINAT5___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1___, customattr0_.VACC_EXT_ID as VACC6___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1_0_, customattr0_.VALUE as VALUE2_0_, customattr0_.UPDATED_BY as UPDATED3_2_0_, customattr0_.UPDATED_TS as UPDATED4_2_0_, customattr0_.VACCINATION_ID as VACCINAT5_2_0_, customattr0_.VACC_EXT_ID as VACC6_2_0_ from HE_VACC_ATTRIBUTES customattr0_ where customattr0_.VACCINATION_ID=?
Hibernate: select customattr0_.VACCINATION_ID as VACCINAT5___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1___, customattr0_.VACC_EXT_ID as VACC6___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1_0_, customattr0_.VALUE as VALUE2_0_, customattr0_.UPDATED_BY as UPDATED3_2_0_, customattr0_.UPDATED_TS as UPDATED4_2_0_, customattr0_.VACCINATION_ID as VACCINAT5_2_0_, customattr0_.VACC_EXT_ID as VACC6_2_0_ from HE_VACC_ATTRIBUTES customattr0_ where customattr0_.VACCINATION_ID=?
Hibernate: select customattr0_.VACCINATION_ID as VACCINAT5___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1___, customattr0_.VACC_EXT_ID as VACC6___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1_0_, customattr0_.VALUE as VALUE2_0_, customattr0_.UPDATED_BY as UPDATED3_2_0_, customattr0_.UPDATED_TS as UPDATED4_2_0_, customattr0_.VACCINATION_ID as VACCINAT5_2_0_, customattr0_.VACC_EXT_ID as VACC6_2_0_ from HE_VACC_ATTRIBUTES customattr0_ where customattr0_.VACCINATION_ID=?
Hibernate: select customattr0_.VACCINATION_ID as VACCINAT5___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1___, customattr0_.VACC_EXT_ID as VACC6___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1_0_, customattr0_.VALUE as VALUE2_0_, customattr0_.UPDATED_BY as UPDATED3_2_0_, customattr0_.UPDATED_TS as UPDATED4_2_0_, customattr0_.VACCINATION_ID as VACCINAT5_2_0_, customattr0_.VACC_EXT_ID as VACC6_2_0_ from HE_VACC_ATTRIBUTES customattr0_ where customattr0_.VACCINATION_ID=?
Hibernate: select customattr0_.VACCINATION_ID as VACCINAT5___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1___, customattr0_.VACC_EXT_ID as VACC6___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1_0_, customattr0_.VALUE as VALUE2_0_, customattr0_.UPDATED_BY as UPDATED3_2_0_, customattr0_.UPDATED_TS as UPDATED4_2_0_, customattr0_.VACCINATION_ID as VACCINAT5_2_0_, customattr0_.VACC_EXT_ID as VACC6_2_0_ from HE_VACC_ATTRIBUTES customattr0_ where customattr0_.VACCINATION_ID=?
Hibernate: select customattr0_.VACCINATION_ID as VACCINAT5___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1___, customattr0_.VACC_EXT_ID as VACC6___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1_0_, customattr0_.VALUE as VALUE2_0_, customattr0_.UPDATED_BY as UPDATED3_2_0_, customattr0_.UPDATED_TS as UPDATED4_2_0_, customattr0_.VACCINATION_ID as VACCINAT5_2_0_, customattr0_.VACC_EXT_ID as VACC6_2_0_ from HE_VACC_ATTRIBUTES customattr0_ where customattr0_.VACCINATION_ID=?
Hibernate: select customattr0_.VACCINATION_ID as VACCINAT5___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1___, customattr0_.VACC_EXT_ID as VACC6___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1_0_, customattr0_.VALUE as VALUE2_0_, customattr0_.UPDATED_BY as UPDATED3_2_0_, customattr0_.UPDATED_TS as UPDATED4_2_0_, customattr0_.VACCINATION_ID as VACCINAT5_2_0_, customattr0_.VACC_EXT_ID as VACC6_2_0_ from HE_VACC_ATTRIBUTES customattr0_ where customattr0_.VACCINATION_ID=?
Hibernate: select customattr0_.VACCINATION_ID as VACCINAT5___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1___, customattr0_.VACC_EXT_ID as VACC6___, customattr0_.ATTRIBUTE_ID as ATTRIBUTE1_0_, customattr0_.VALUE as VALUE2_0_, customattr0_.UPDATED_BY as UPDATED3_2_0_, customattr0_.UPDATED_TS as UPDATED4_2_0_, customattr0_.VACCINATION_ID as VACCINAT5_2_0_, customattr0_.VACC_EXT_ID as VACC6_2_0_ from HE_VACC_ATTRIBUTES customattr0_ where customattr0_.VACCINATION_ID=?
Hibernate: select exemption0_.EXEMPTION_ID as EXEMPTION1_, exemption0_.DISTRICT_NUMBER as DISTRICT2_3_, exemption0_.DESCRIPTION as DESCRIPT3_3_, exemption0_.IS_ACTIVE_IND as IS4_3_, exemption0_.MESSAGE_KEY as MESSAGE5_3_, exemption0_.NAME as NAME3_, exemption0_.ORDER_DEFAULT as ORDER7_3_, exemption0_.REPORT_LABEL as REPORT8_3_, exemption0_.VALUE as VALUE3_, exemption0_.UPDATED_BY as UPDATED10_3_, exemption0_.UPDATED_TS as UPDATED11_3_ from ENUM_HE_EXEMPTIONS exemption0_
Hibernate: select CE_FAMILY_MBR_SEQ.nextval from dual
Hibernate: select STUDENT_VACC_SEQ.nextval from dual
Hibernate: select STUDENT_VACC_SEQ.nextval from dual
Hibernate: select STUDENT_EXEMPTION_SEQ.nextval from dual
Hibernate: insert into CE_FAMILY_MEMBER (FIRST_NAME, MIDDLE_NAME, LAST_NAME, GENDER, DATE_OF_BIRTH, HEALTH_COMPLIANT, EXT_STUDENT_NUMBER, UPDATED_BY, UPDATE_TS, DISTRICT_NUMBER, EMAIL, STUDENT_ID) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
Hibernate: insert into ST_STUDENT_VACCINATION (VACCINATION_DATE, AGE_AT_VACCINATION, UPDATED_BY, UPDATED_TS, VACCINATION_SEQ, STUDENT_ID, VACCINATION_ID, STUDENT_VACC_ID) values (?, ?, ?, ?, ?, ?, ?, ?)
Hibernate: insert into ST_STUDENT_VACCINATION (VACCINATION_DATE, AGE_AT_VACCINATION, UPDATED_BY, UPDATED_TS, VACCINATION_SEQ, STUDENT_ID, VACCINATION_ID, STUDENT_VACC_ID) values (?, ?, ?, ?, ?, ?, ?, ?)
Hibernate: insert into ST_STUDENT_VACC_EXEMPTION (AS_OF_DATE, UPDATED_BY, UPDATED_TS, STUDENT_ID, VACCINATION_ID, EXEMPTION_ID, STUDENT_EXEMPTION_ID) values (?, ?, ?, ?, ?, ?, ?)
Hibernate: select student0_.STUDENT_ID as STUDENT1_, student0_.FIRST_NAME as FIRST2_6_, student0_.MIDDLE_NAME as MIDDLE3_6_, student0_.LAST_NAME as LAST4_6_, student0_.GENDER as GENDER6_, student0_.DATE_OF_BIRTH as DATE6_6_, student0_.HEALTH_COMPLIANT as HEALTH7_6_, student0_.EXT_STUDENT_NUMBER as EXT8_6_, student0_.UPDATED_BY as UPDATED9_6_, student0_.UPDATE_TS as UPDATE10_6_, student0_.DISTRICT_NUMBER as DISTRICT11_6_, student0_.EMAIL as EMAIL6_ from CE_FAMILY_MEMBER student0_ where DISTRICT_NUMBER=? and EXT_STUDENT_NUMBER=?
[/code]
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