JPA self directed error
Mike Barnes <mike.barnes-f9aWwpgOZj5Wk0Htik3J/[email protected]> Thu, 30 Nov 2017 08:37:51 -0800
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I have a user class that has a modifiedBy and createdBy columns that point =
to the user class. When I try and run the code I get the following error:
Direct self-reference leading to cycle; nested exception is com.fasterxml.=
jackson.databind.JsonMappingException
DB table:
User {
Long id,
Long CreatedById
Long ModifiedById
}
JPA Class
Public class User
{
Private long id;
@OneToOne(fetch =3D FetchType.LAZY)
@JoinColumn(name=3D"createdById")=09
Private User createdBy;
@OneToOne(fetch =3D FetchType.LAZY)
@JoinColumn(name=3D"modifiedById")=09
Private User modifiedBy;
}
What am I doing incorrectly.
Thanks for all of you help in advance.
Mike Barnes
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--></style></head><body lang=3DEN-US link=3Dblue vlink=3D"#954F72"><div cla=
ss=3DWordSection1><p class=3DMsoNormal>I have a user class that has a modif=
iedBy and createdBy columns that point to the user class. When I try and ru=
n the code I get the following error:</p><p class=3DMsoNormal>=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0 Direct self-reference leading to cycle; nested exception is com.fasterx=
ml.jackson.databind.JsonMappingException</p><p class=3DMsoNormal><o:p> =
;</o:p></p><p class=3DMsoNormal>DB table:</p><p class=3DMsoNormal><o:p>&nbs=
p;</o:p></p><p class=3DMsoNormal style=3D'margin-left:.5in'>User {</p><p cl=
ass=3DMsoNormal style=3D'margin-left:1.0in'>Long id,</p><p class=3DMsoNorma=
l style=3D'margin-left:1.0in'>Long CreatedById</p><p class=3DMsoNormal styl=
e=3D'margin-left:1.0in'>Long ModifiedById</p><p class=3DMsoNormal style=3D'=
margin-left:.5in'>}</p><p class=3DMsoNormal><o:p> </o:p></p><p class=
=3DMsoNormal>JPA Class</p><p class=3DMsoNormal><o:p> </o:p></p><p clas=
s=3DMsoNormal style=3D'margin-left:.5in'>Public class User</p><p class=3DMs=
oNormal style=3D'margin-left:.5in'>{</p><p class=3DMsoNormal style=3D'margi=
n-left:1.0in'>Private long id;</p><p class=3DMsoNormal style=3D'margin-left=
:1.0in'>@OneToOne(fetch =3D FetchType.LAZY)</p><p class=3DMsoNormal style=
=3D'margin-left:1.0in'>@JoinColumn(name=3D"createdById")=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 </p><p class=3DMsoNormal style=3D'margin-left:1=
.0in'>Private User createdBy;</p><p class=3DMsoNormal style=3D'margin-left:=
1.0in'>@OneToOne(fetch =3D FetchType.LAZY)<o:p></o:p></p><p class=3DMsoNorm=
al style=3D'margin-left:1.0in'>@JoinColumn(name=3D"modifiedById")=
=C2=A0=C2=A0=C2=A0 <o:p></o:p></p><p class=3DMsoNormal style=3D'margin-left=
:1.0in'>Private User modifiedBy;</p><p class=3DMsoNormal style=3D'margin-le=
ft:.5in'>}</p><p class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNorma=
l><o:p> </o:p></p><p class=3DMsoNormal>What am I doing incorrectly.<o:=
p></o:p></p><p class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>=
<o:p> </o:p></p><p class=3DMsoNormal>Thanks for all of you help in adv=
ance.<o:p></o:p></p><p class=3DMsoNormal><o:p> </o:p></p><p class=3DMs=
oNormal>Mike Barnes<o:p></o:p></p></div></body></html>=
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