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    <p>This answer was made pre-JPA2 implementations, if you're using JPA2, see the ElementCollection answer above:</p> <p>Lists of objects inside a model object are generally considered "OneToMany" relationships with another object. However, a String is not (by itself) an allowable client of a One-to-Many relationship, as it doesn't have an ID.</p> <p>So, you <em>should</em> convert your list of Strings to a list of Argument-class JPA objects containing an ID and a String. You could potentially use the String as the ID, which would save a little space in your table both from removing the ID field and by consolidating rows where the Strings are equal, but you would lose the ability to order the arguments back into their original order (as you didn't store any ordering information).</p> <p>Alternatively, you could convert your list to @Transient and add another field (argStorage) to your class that is either a VARCHAR() or a CLOB. You'll then need to add 3 functions: 2 of them are the same and should convert your list of Strings into a single String (in argStorage) delimited in a fashion that you can easily separate them. Annotate these two functions (that each do the same thing) with @PrePersist and @PreUpdate. Finally, add the third function that splits the argStorage into the list of Strings again and annotate it @PostLoad. This will keep your CLOB updated with the strings whenever you go to store the Command, and keep the argStorage field updated before you store it to the DB.</p> <p>I still suggest doing the first case. It's good practice for real relationships later.</p>
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    1. POHow to persist a property of type List<String> in JPA?
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    1. USbilljamesdev
    1. USbilljamesdev
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    1. COChanging from ArrayList<String> to String with comma separated values worked for me.
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      1. USChris Dale
    2. COBut this forces you to use (imho) ugly like statements when querying that field.
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      1. USwhiskeysierra
    3. COYes, as I said... do the first option, it's better. If you just can't bring yourself to do it, option 2 can work.
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