[appfuse-user] Why the GenericManager can not be injected when the model ID is a String ?

[Vachel Chan]

hi all:
 
    The following code is my model class. Specially, the key property
"regionId" is a String, not a Long type.

When I  use "mvn appfuse:gen -Dentity=DRegion " to generate all the code and
run "mvn integration-test",
there is an Excepion :

  java.lang.NullPointerException
        at com.huaat.webapp.action.DRegionAction.list(DRegionAction.java:38)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        ................
             ..........

  Then  I check the code  DRegionAction.java in line 38:  dRegions =
dRegionManager.getAll();
  Obviously , the  dRegionManager is NULL !    I check every config files ,
the dRegionManager bean 
 was added correctly, including  in applicationcontext.xml.   like this:

     <!--DRegionManager-START-->
    <bean id="dRegionManager"
class="org.appfuse.service.impl.GenericManagerImpl" autowire="byName">
        <constructor-arg>
            <bean class="org.appfuse.dao.hibernate.GenericDaoHibernate">
                <constructor-arg value="com.myproject.model.DRegion"/>
                <property name="sessionFactory" ref="sessionFactory"/>
            </bean>
        </constructor-arg>
    </bean>
    <!--DRegionManager-END-->

 now the question is, why the dRegionManager is not injected in my
DRegionAction ?

 and why every thing is ok when the model key property chang to Long,
instead of a String ?

 thanks advanced!

--------------------------- DRegion.java
-------------------------------------

package com.myproject.model;

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.Embeddable;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;

import org.appfuse.model.BaseObject;

@Embeddable
@Entity
@Table(name="d_region")
public class DRegion extends BaseObject implements Serializable {
        
    private static final long serialVersionUID = 8317259246781769186L;
    private String regionId;
    private String regionName;

    @Id
    @Column(name="region_id", nullable=false, length=3)
    public String getRegionId() {
        return this.regionId;
    }
    
    public void setRegionId(String regionId) {
        this.regionId = regionId;
    }
    
    @Column(name="region_name", nullable=false, length=32)
    public String getRegionName() {
        return this.regionName;
    }
    
    public void setRegionName(String regionName) {
        this.regionName = regionName;
    }

    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        DRegion pojo = (DRegion) o;

        if (regionName != null ? !regionName.equals(pojo.regionName) :
pojo.regionName != null) return false;

        return true;
    }

    public int hashCode() {
        int result = 0;
        result = (regionName != null ? regionName.hashCode() : 0);

        return result;
    }

    public String toString() {
        StringBuffer sb = new StringBuffer(getClass().getSimpleName());

        sb.append(" [");
        sb.append("regionId").append("='").append(getRegionId()).append("',
");
       
sb.append("regionName").append("='").append(getRegionName()).append("'");
        sb.append("]");
      
        return sb.toString();
    }

}




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