hibernate - Use spring property in @ColumnTransformer -


i try use database encryption single fields spring , jpa (hibernate). here part of entity:

@columntransformer(    read="aes_decrypt(unhex(lastname), unhex(sha2('secret', 512)))",    write="hex(aes_encrypt(?, unhex(sha2('secret', 512))))" ) private string lastname;

this uses mysql-functions encrypt , decrypt field, not have care in java.

my problem cannot hardcode passphrase in java-code, java-annotations allow non-dynamic final strings params. how use spring application property replace passphrase 'secret'?

i cannot use jpa-converter, because want able filter , sort lastname. tried subclass mysql5innodbdialect , register standardsqlfunction, not work conceptually @columntransformer because these functions registered in context of jpa, not sql. thought of programmatically manipulating hibernate config before used create entitymanagerfactory, not know how that. appreciated.


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