Application parameter in ddl scripts

[katerinap99]

Regarding repeatable migrations in extra-ddl.xml files, is it possible to pass an application-defined property to a ddl script?

[rPraml]

Yes, take a look at placeholders / runPlaceholders in https://github.com/ebean-orm/ebean-migration/blob/a0e1b50e1756f7b088b157d2dd786dddc4cc65af/ebean-migration/src/main/java/io/ebean/migration/MigrationConfig.java

[katerinap99]

thank you! How should I parse the placeholder values in the extra-ddl.xml file, in SQL?

[rPraml]

Not at all. You just use alter ${mytable}... in your extra-ddl. This string goes into the db-migration-SQL. When Dbmigration is applied and run placeholders are set, the string will be modified before execution.
Does this help? Or can you explain your use case in more details?

[katerinap99]

It did help, thank you!