Hi,
Hibernate version - 3.6.1.FINAL
DB - MySQL
I have the following relationship among entities -
Amount has one or more TaxAmount
Tax has one or more TaxAmount
,there is no relation ship b/w Amount and Tax.
The entities are are as follows -
1) Amount
Code:
package com.uti.entity;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.persistence.Cacheable;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;
import org.hibernate.annotations.IndexColumn;
import org.hibernate.envers.Audited;
@Entity @Audited @Table(schema="mysql")
@org.hibernate.annotations.Entity(dynamicInsert=true,dynamicUpdate=true)
@Cacheable @Cache(usage=CacheConcurrencyStrategy.READ_WRITE)
public class Amount implements Serializable{
@Id @GeneratedValue
private long amountId;
public long getAmountId() {
return amountId;
}
public void setAmountId(long amountId) {
this.amountId = amountId;
}
public String getAmountCode() {
return amountCode;
}
public void setAmountCode(String amountCode) {
this.amountCode = amountCode;
}
public List<TaxAmount> getTaxAmountsAmt() {
if (taxAmountsAmt == null) {
taxAmountsAmt = new ArrayList<TaxAmount>();
}
this.taxAmountsAmt.removeAll(Collections.singleton(null));
return this.taxAmountsAmt;
}
public void setTaxAmountsAmt(List<TaxAmount> taxAmounts) {
if (taxAmounts == null) {
this.taxAmountsAmt = new ArrayList<TaxAmount>();
} else {
this.taxAmountsAmt = taxAmounts;
}
}
private String amountCode;
@OneToMany (cascade=CascadeType.ALL,orphanRemoval=true)
@JoinColumn(name="amount_id", insertable=false, updatable=false, nullable=false)
@IndexColumn(name="indx",base=0)
protected List<TaxAmount> taxAmountsAmt = new ArrayList<TaxAmount>();
}
2) Tax
Code:
package com.uti.entity;
import java.io.Serializable;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.persistence.Cacheable;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToMany;
import javax.persistence.OrderColumn;
import javax.persistence.Table;
import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;
import org.hibernate.annotations.IndexColumn;
import org.hibernate.envers.Audited;
@Entity @Audited @Table(schema="mysql")
@org.hibernate.annotations.Entity(dynamicInsert=true,dynamicUpdate=true)
@Cacheable @Cache(usage=CacheConcurrencyStrategy.READ_WRITE)
public class Tax implements Serializable {
@Id @GeneratedValue
private long taxId;
public long getTaxId() {
return taxId;
}
public void setTaxId(long taxId) {
this.taxId = taxId;
}
public String getTaxCode() {
return taxCode;
}
public void setTaxCode(String taxCode) {
this.taxCode = taxCode;
}
private String taxCode;
@OneToMany (cascade=CascadeType.ALL,orphanRemoval=true)
@JoinColumn(name="tax_id", insertable=false, updatable=false, nullable=false)
@IndexColumn(name="indx",base=0)
protected List<TaxAmount> taxAmountsTax = new ArrayList<TaxAmount>();
public List<TaxAmount> getTaxAmountsTax() {
if (taxAmountsTax == null) {
taxAmountsTax = new ArrayList<TaxAmount>();
}
this.taxAmountsTax.removeAll(Collections.singleton(null));
return this.taxAmountsTax;
}
public void setTaxAmountsTax(List<TaxAmount> taxAmounts) {
if (taxAmountsTax == null) {
this.taxAmountsTax = new ArrayList<TaxAmount>();
} else {
this.taxAmountsTax = taxAmounts;
}
}
}
3) TaxAmount
Code:
package com.uti.entity;
import java.io.Serializable;
import java.math.BigDecimal;
import javax.persistence.Cacheable;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;
import org.hibernate.annotations.IndexColumn;
import org.hibernate.envers.Audited;
@Entity @Audited @Table(schema="mysql")
@org.hibernate.annotations.Entity(dynamicInsert=true,dynamicUpdate=true)
@Cacheable @Cache(usage=CacheConcurrencyStrategy.READ_WRITE)
public class TaxAmount implements Serializable {
@Id @GeneratedValue
private long taxAmountId;
public long getTaxAmountId() {
return taxAmountId;
}
public void setTaxAmountId(long taxAmountId) {
this.taxAmountId = taxAmountId;
}
public BigDecimal getTaxAmount() {
return taxAmount;
}
public void setTaxAmount(BigDecimal taxAmount) {
this.taxAmount = taxAmount;
}
public Tax getTaxProxy() {
return taxProxy;
}
public void setTaxProxy(Tax taxProxy) {
this.taxProxy = taxProxy;
}
public Amount getAmountProxy() {
return amountProxy;
}
public void setAmountProxy(Amount amountProxy) {
this.amountProxy = amountProxy;
}
private BigDecimal taxAmount;
@ManyToOne
@JoinColumn(name="tax_id",insertable=false, updatable=false, nullable=false)
private Tax taxProxy;
@ManyToOne
@JoinColumn(name="amount_id",insertable=false, updatable=false, nullable=false)
private Amount amountProxy;
/*@Column(name="indx",insertable=false,updatable=false)
private int indx;
public int getIndx() {
return indx;
}
public void setIndx(int indx) {
this.indx = indx;
}
*/
}
Code used to insert data -
Code:
em.getTransaction().begin();
Amount amt = new Amount();
amt.setAmountCode("SAL");
em.persist(amt);
Tax tax = new Tax();
tax.setTaxCode("TDS");
em.persist(tax);
TaxAmount taxAmount = new TaxAmount();
taxAmount.setTaxAmount(new BigDecimal(100));
amt.getTaxAmountsAmt().add(taxAmount);
taxAmount.setAmountProxy(amt);
tax.getTaxAmountsTax().add(taxAmount);
taxAmount.setTaxProxy(tax);
em.getTransaction().commit();
The above code errors out with following exception -
Code:
Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: com.uti.entity.TaxAmount column: indx (should be mapped with insert="false" update="false")
at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:676)
at org.hibernate.mapping.PersistentClass.checkPropertyColumnDuplication(PersistentClass.java:698)
at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:720)
at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:474)
at org.hibernate.mapping.RootClass.validate(RootClass.java:235)
at org.hibernate.cfg.Configuration.validate(Configuration.java:1332)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1835)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:902)
This works if I use different names for @IndexColumn annotation.But if I use 2 different names, 2 separate index columns are created in DB.
Is it possible to make it work with only one index column?
Also, in case I need to add a new TaxAmount under an existing tax and Amount, please advice how would I do it?
Regards,
Jacob
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