Hi.

I need to delete an attribute of a entity but I obtain error "No context
element found".

Could you help me?

This is the attribute of entity:

[root@host-192-168-192-78 conf]# (curl
localhost:1026/NGSI10/queryContext -s -S --header 'Content-Type:
application/xml' d @ | xmllint --format -) <<EOF
> <?xml version="1.0" encoding="UTF-8"?>
> <queryContextRequest>
> <entityIdList>
> <entityId type="Sensor" isPattern="false">
> <id>1</id>
> </entityId>
> </entityIdList>
> <attributeList>
> <attribute>timestamp</attribute>
> </attributeList>
> </queryContextRequest>
> EOF
<?xml version="1.0"?>
<queryContextResponse>
<contextResponseList>
<contextElementResponse>
<contextElement>
<entityId type="Sensor" isPattern="false">
<id>1</id>
</entityId>
<contextAttributeList>
<contextAttribute>
<name>timestamp</name>
<type>string</type>
<contextValue>2015-04-15 11:10:00</contextValue>
</contextAttribute>
</contextAttributeList>
</contextElement>
<statusCode>
<code>200</code>
<reasonPhrase>OK</reasonPhrase>
</statusCode>
</contextElementResponse>
</contextResponseList>
</queryContextResponse>
[root@host-192-168-192-78 conf]#

And here the xml code to delete it:

[root@host-192-168-192-78 conf]# (curl
localhost:1026/NGSI10/updateContext -s -S --header 'Content-Type:
application/xml' d @ | xmllint --format - ) <<EOF
> <?xml version="1.0" encoding="UTF-8"?>
> <updateContextRequest>
> <contextElementList>
> <contextElement>
> <entityId type="Sensor" isPattern="false">
> <id>1</id>
> </entityId>
> <contextAttributeList>
> <contextAttribute>
> <name>timestamp</name>
> <type>string</type>
> <contextValue/>
> </contextAttribute>
> </contextAttributeList>
> </contextElement>
> </contextElementList>
> <updateAction>DELETE</updateAction>
> </updateContextRequest>
> EOF
<?xml version="1.0"?>
<updateContextResponse>
<contextResponseList>
<contextElementResponse>
<contextElement>
<entityId type="Sensor" isPattern="false">
<id>1</id>
</entityId>
</contextElement>
<statusCode>
<code>404</code>
<reasonPhrase>No context element found</reasonPhrase>
<details>1</details>
</statusCode>
</contextElementResponse>
</contextResponseList>
</updateContextResponse>
[root@host-192-168-192-78 conf]#

Regards.

Cristina

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