Ok, the modeler now changed generated classes:

public void setRequestSd(CharType requestSd) {
        writeProperty(REQUEST_SD, requestSd);
}

public CharType getRequestSd() {
    return (CharType)readProperty(REQUEST_SD);
}

Now how to convert a String that I want to store in a CharType?

On 2020/11/01 14:01:31, Amedeo Mantica <[email protected]> wrote: 
> No. Never edit the generated classes.
> You can set the mapped class in the modeler. 
> 
> Sent from my iPhone
> 
> > On 1 Nov 2020, at 14:30, Giuseppe De Rosa <[email protected]> wrote:
> > 
> > So I need to modify the generated class, right? Actually for clob field I 
> > have this situation:
> > 
> > public void setRequest(String request) {
> >        writeProperty(REQUEST, request);
> > }
> > 
> > public String getRequest() {
> >    return (String)readProperty(REQUEST);
> > }
> > 
> > How to change it?
> > 
> >> On 2020/10/31 15:33:57, Amedeo Mantica <[email protected]> 
> >> wrote: 
> >> I guess you should map it as
> >> 
> >> org.apache.cayenne.access.types.CharType
> >> 
> >> Amedeo
> >> 
> >>>> On 31 Oct 2020, at 15:51, Giuseppe De Rosa <[email protected]> wrote:
> >>> 
> >>> I'm trying to make a simple select query but receive this error:
> >>> 
> >>> java.io.StreamCorruptedException: invalid stream header: 78780A1F 
> >>> at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:857)
> >>> 
> >>> In datamap I have a db-attribute of type CLOB that I want read as a 
> >>> simple String.
> >>> 
> >>> <db-entity name="DISC">
> >>>       <db-attribute name="DATE" type="TIMESTAMP" isMandatory="true" 
> >>> length="7"/>
> >>>       <db-attribute name="ID" type="INTEGER" isPrimaryKey="true" 
> >>> isMandatory="true"/>
> >>>       <db-attribute name="FLAG" type="VARCHAR" isMandatory="true"/>
> >>>       <db-attribute name="REQUEST" type="CLOB" isMandatory="false"/>
> >>>       <db-key-generator>
> >>>           <db-generator-type>ORACLE</db-generator-type>
> >>>           <db-generator-name>DISC_SEQ</db-generator-name>
> >>>           <db-key-cache-size>1</db-key-cache-size>
> >>>       </db-key-generator>
> >>> </db-entity>
> >>> <obj-entity name="Disc" className="it.pack.dao.Disc" dbEntityName="DISC">
> >>>       <obj-attribute name="date" type="java.time.LocalDateTime" 
> >>> db-attribute-path="DATE"/>
> >>>       <obj-attribute name="id" type="java.lang.Integer" 
> >>> db-attribute-path="ID"/>
> >>>       <obj-attribute name="flag" type="java.lang.String" 
> >>> db-attribute-path="FLAG"/>
> >>>       <obj-attribute name="request" type="java.lang.String" 
> >>> db-attribute-path="REQUEST"/>
> >>> </obj-entity>
> >>> 
> >>> I think that CLOB cannot map to java.lang.String but how can I read it?
> >> 
> >> 
> 

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