An inhertiable class level meta attribute of scope-get and scope-set cannot be overridden within a property. Instead some string concat is being applied. This is different behavior than with hibernate tools 2.1.3 and it is a potential bug (or at least a change of behavior).

Hibernate 3 Mapping File

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.hibernate">
<class mutable="true" lazy="false" name="com.hibernate.Test" table="TEST">
<meta attribute="scope-get">private</meta>
<meta attribute="scope-set">private</meta>
<id name="id" column="ID" type="long">
<generator class="assigned" />
</id>
<property name="col1" column="COL1" type="java.lang.String">
<meta attribute="scope-get">public</meta>
</property>
<property name="col2" column="COL2" type="java.lang.String">
<meta attribute="scope-set"></meta>
<meta attribute="scope-get">public</meta>
</property>
<property name="col3" column="COL3" type="java.lang.String">
</property>
<property name="col4" column="COL4" type="java.lang.String">
</property>
</class>
</hibernate-mapping>

Hibernate 3 Generated File

package com.hibernate;
// Generated Mar 16, 2006 10:00:19 AM by Hibernate Tools 3.1.0.beta4

/**

• Test generated by hbm2java
  */

public class Test implements java.io.Serializable {
// Fields

private long id;
private String col1;
private String col2;
private String col3;
private String col4;

// Constructors

/** default constructor */
public Test() {
}

/** minimal constructor */
public Test(long id) {
this.id = id;
}

/** full constructor */
public Test(long id, String col1, String col2, String col3, String col4) {
this.id = id;
this.col1 = col1;
this.col2 = col2;
this.col3 = col3;
this.col4 = col4;
}

// Property accessors

privatepublicpublic long getId() {
return this.id;
}

private void setId(long id) {
this.id = id;
}

privatepublicpublic String getCol1() {
return this.col1;
}

private void setCol1(String col1) {
this.col1 = col1;
}

privatepublicpublic String getCol2() {
return this.col2;
}

private void setCol2(String col2) {
this.col2 = col2;
}

privatepublicpublic String getCol3() {
return this.col3;
}

private void setCol3(String col3) {
this.col3 = col3;
}

privatepublicpublic String getCol4() {
return this.col4;
}

private void setCol4(String col4) {
this.col4 = col4;
}
}

Hibernate 2 Mapping File

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping package="com.hibernate">
<class mutable="true" lazy="false" name="com.hibernate.Test" table="TEST">
<meta attribute="scope-get">private</meta>
<meta attribute="scope-set">private</meta>
<id name="id" column="ID" type="long">
<generator class="assigned" />
</id>
<property name="col1" column="COL1" type="java.lang.String">
<meta attribute="scope-get">public</meta>
</property>
<property name="col2" column="COL2" type="java.lang.String">
<meta attribute="scope-set"></meta>
<meta attribute="scope-get">public</meta>
</property>
<property name="col3" column="COL3" type="java.lang.String">
</property>
<property name="col4" column="COL4" type="java.lang.String">
</property>
</class>
</hibernate-mapping>

Hibernate 2 Generated File

package com.hibernate;

import java.io.Serializable;
import org.apache.commons.lang.builder.ToStringBuilder;

/** @author Hibernate CodeGenerator */
public class Test implements Serializable {

/** identifier field */
private Long id;

/** nullable persistent field */
private String col1;

/** nullable persistent field */
private String col2;

/** nullable persistent field */
private String col3;

/** nullable persistent field */
private String col4;

/** full constructor */
public Test(Long id, String col1, String col2, String col3, String col4) {
this.id = id;
this.col1 = col1;
this.col2 = col2;
this.col3 = col3;
this.col4 = col4;
}

/** default constructor */
public Test() {
}

/** minimal constructor */
public Test(Long id) {
this.id = id;
}

private Long getId() {
return this.id;
}

private void setId(Long id) {
this.id = id;
}

public String getCol1() {
return this.col1;
}

private void setCol1(String col1) {
this.col1 = col1;
}

public String getCol2() {
return this.col2;
}

void setCol2(String col2) {
this.col2 = col2;
}

private String getCol3() {
return this.col3;
}

private void setCol3(String col3) {
this.col3 = col3;
}

private String getCol4() {
return this.col4;
}

private void setCol4(String col4) {
this.col4 = col4;
}

public String toString() {
return new ToStringBuilder(this)
.append("id", getId())
.toString();
}

}

see also forum topic http://forum.hibernate.org/viewtopic.php?t=956894#2296725