Cannot set null value to property by invoking ODocument.field({fieldName}, null), an ambiguous error

[Hung Tran]

Hi,

I got an ambiguous error with this code

document.field(fieldName, null);// should it be "document.field(fieldName, (object)null)"

the error is 

The call is ambiguous between the following methods or properties: 'com.orientechnologies.orient.core.record.impl.ODocument.field(string, com.orientechnologies.orient.core.metadata.schema.OType)' and 'com.orientechnologies.orient.core.record.impl.ODocument.field(string, java.lang.Class)'

Any help will be very appreciated!

My Best,

Hung Tran

[machak]

Hi,

you need to cast null to either com.orientechnologies.orient.core.metadata.schema.OType or  java.lang.Class  

otherwise it is not possible to know which method you want to execute

so, call it like:

document.field(fieldName, (com.orientechnologies.orient.core.metadata.schema.OType)null) or with class cast..

hth,

/m

 

My Best,

Hung Tran

[Hung Tran]

Hi machak,

I think you misunderstood it. My case is trying to set a null value for a field name of document, your suggestion will not do that, that will return a field value instead.

By looking at the ODocument class, you will see there are 4 overloading methods of field()

1. Getters:

• 1.1 field ( fieldName )
• 1.2 field ( fieldName, conversionType )
• 1.3 field ( fieldName, conversionType:OType )

2. Setters:

• 2.1 field ( fieldName, fieldValue )
• ....

My Best,

Hung Tran