How to convert boolean values (true,false,undefined) to a string

Hello,

I need a solution to convert a boolean value to string.
Easy job if there where not those undefined (null) values.

So I need at best a one liner to handle this problem:

boolean value: true -> 'true'
boolean Value: undefined (null),false -> 'false'

Tolomir

LVL 27
TolomirAdministratorAsked:
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CEHJCommented:
Are you working in a db? A primitive boolean can only have 2 states
cr4ck3rj4ckCommented:
Hi there,

http://www.javadb.com/convert-boolean-to-string

Hope that helps,
CJ
TolomirAdministratorAuthor Commented:
Hello,

yes I'm working with a postgreSQL DB and I want to export values with a java tool to an oracle DB (ETL process)

PostgreSQL got that "nice" a boolean can be undefined feature.... causing me problems.

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TolomirAdministratorAuthor Commented:
Right now I'm trying something like this:

oracle_tmp.f25string = row1.f25boolean <> NULL ? row1.f25boolean.toString(): 'false';

CEHJCommented:
Try calling the following with resultSet.getObject(booleanFieldIndex)


    public static String boolToString(Object o) {
        return o == null? "null" : ((Boolean)o).toString();
    }
 
//even the following could do it ;-)
 
    public static String boolToString(Object o) {
        return "" + o;
    }

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TolomirAdministratorAuthor Commented:
The code snipped did it.
CEHJCommented:
:-)
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