I'm a new user.. started using Hibernate last week.
I've the following relationship.
[b]Many-to-one relation between AnnualTract and Tract Objects.[/b]
What i'm trying to accomplish is when I find AnnualTractPersistenceObject I need to have the associated TractPersistenceObject also populated.
Here is the mapping i'm using followed with java code.
<hibernate-mapping>
<class name="gov.usda.fsa.farmrecords.frs.persistenceobject.AnnualTractPersistenceObject" table="tractyear">
<!--<jcs-cache usage="read-write"/>-->
<id column="id" name="oid">
<generator class="identity"/>
</id>
<property name="fiscalYear" column="fiscalyear" not-null="true" length="4"/>
<property name="tractID" column="tract_id" not-null="true" length="4"/>
<property name="farmLandAcreage" column="farmland_acreage" length="4"/>
<property name="cropLandAcreage" column="cropland_acreage" length="4"/>
<many-to-one name="tractPersistenceObject" column="tract_id" cascade="none" outer-join="true" insert="false" update="false" not-null="true"/>
</class>
<class name="gov.usda.fsa.farmrecords.frs.persistenceobject.TractPersistenceObject" table="tract">
<!--<jcs-cache usage="read-write"/>-->
<id column="id" name="oid">
<generator class="identity"/>
</id>
<property name="number" column="nb" not-null="true" length="7"/>
<property name="stateFSACode" column="state_code" not-null="true" length="2"/>
<property name="countyFSACode" column="county_code" not-null="true" length="3"/>
</class>
</hibernate-mapping>
Java Class:
public class AnnualTractPersistenceObject {
private static String FIND_ALL = "from gov.usda.fsa.farmrecords.frs.persistenceobject.AnnualTractPersistenceObject as tractyear, gov.usda.fsa.farmrecords.frs.persistenceobject.TractPersistenceObject as tract";
private static String FIND = FIND_ALL + " where tractyear.oid = ? and tractyear.tractID = tract.oid";
private Integer oid = null;
private Integer fiscalYear = null;
private Integer tractID = null;
private Integer farmLandAcreage = null;
private Integer cropLandAcreage = null;
private TractPersistenceObject lTract = null;
public AnnualTractPersistenceObject()
{
}
public static AnnualTractPersistenceObject find( Integer aOid)
throws HibernateException
{
Object lObject = getSession().find(
AnnualTractPersistenceObject.FIND, aOid, Hibernate.INTEGER).get(0);
AnnualTractPersistenceObject lUnit = (AnnualTractPersistenceObject) lObject;
return lUnit;
}
public Integer getOid()
{
return oid;
}
protected void setOid(Integer aOid)
{
oid = aOid;
}
/**
* @return
*/
public Integer getCropLandAcreage() {
return cropLandAcreage;
}
/**
* @return
*/
public Integer getFarmLandAcreage() {
return farmLandAcreage;
}
/**
* @return
*/
public Integer getFiscalYear() {
return fiscalYear;
}
/**
* @param integer
*/
public void setCropLandAcreage(Integer integer) {
cropLandAcreage = integer;
}
/**
* @param integer
*/
public void setFarmLandAcreage(Integer integer) {
farmLandAcreage = integer;
}
/**
* @param integer
*/
public void setFiscalYear(Integer integer) {
fiscalYear = integer;
}
/**
* @return
*/
public TractPersistenceObject getLTract() {
return lTract;
}
/**
* @param object
*/
public void setLTract(TractPersistenceObject object) {
lTract = object;
}
/**
* @return
*/
public Integer getTractID() {
return tractID;
}
/**
* @param integer
*/
public void setTractID(Integer integer) {
tractID = integer;
}
}
TractPersistenceObject:
-----------------------------
public class TractPersistenceObject {
private static String FIND_ALL = "from t1 in class gov.usda.fsa.farmrecords.frs.persistenceobject.TractPersistenceObject";
private static String FIND = FIND_ALL + " where t1.oid = ?";
private String number = null;
private String stateFSACode = null;
private String countyFSACode = null;
public TractPersistenceObject()
{
}
public static TractPersistenceObject find(Integer aOid)
throws HibernateException
{
Object lObject = getSession().find(
TractPersistenceObject.FIND, aOid, Hibernate.INTEGER).get(0);
TractPersistenceObject lUnit = (TractPersistenceObject) lObject;
return lUnit;
}
public Integer getOid()
{
return oid;
}
protected void setOid(Integer aOid)
{
oid = aOid;
}
/**
* @return
*/
public String getCountyFSACode() {
return countyFSACode;
}
/**
* @return
*/
public String getNumber() {
return number;
}
/**
* @return
*/
public String getStateFSACode() {
return stateFSACode;
}
/**
* @param string
*/
public void setCountyFSACode(String string) {
countyFSACode = string;
}
/**
* @param string
*/
public void setNumber(String string) {
number = string;
}
/**
* @param string
*/
public void setStateFSACode(String string) {
stateFSACode = string;
}
}
I got the following error when I called the method find on AnnualTractPersistentObject:
java.lang.ExceptionInInitializerError: java.lang.RuntimeException: Fail to build SessionFactory: Problem trying to set association type by reflection: Could not find a getter for tractPersistenceObject in class gov.usda.fsa.farmrecords.frs.persistenceobject.AnnualTractPersistenceObject
at gov.usda.fsa.farmrecords.common.refarch.persistence.HibernateSession.initSessionFactory(HibernateSession.java:38)
at gov.usda.fsa.farmrecords.common.refarch.persistence.HibernateSession.<clinit>(HibernateSession.java:22)
at gov.usda.fsa.farmrecords.common.refarch.FRPersistenceObject.getSession(FRPersistenceObject.java:41)
at gov.usda.fsa.farmrecords.common.refarch.persistence.TxPersistenceObject.begin(TxPersistenceObject.java:53)
at gov.usda.fsa.farmrecords.common.refarch.service.FRTransactionControllerForPersistenceService.txBegin(FRTransactionControllerForPersistenceService.java:39)
at gov.usda.fsa.farmrecords.common.refarch.persistence.TxPersistenceService.beginTx(TxPersistenceService.java:38)
at gov.usda.fsa.farmrecords.common.refarch.test.BasePersistentServiceTest.txBegin(BasePersistentServiceTest.java:31)
at gov.usda.fsa.farmrecords.common.refarch.test.FRTestCase.runBare(FRTestCase.java:65)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:392)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:276)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:167)
Please help me what are all I need to change on this make this working. Let me know if I need to provide you guys with anymore information. One thing I'm not sure is how to form the query to retrieve values.
Also please pass on any information if I can find any examples on Hibernate.
Thanks
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