Configuration¶
When configuring your query object you have two options. In general, you always need a configured Queryconfiguration.
Using a QueryConfiguration instance¶
The QueryConfiguration class allows you to configure the behaviour of your query.
QueryConfiguration config = QueryConfiguration.builder(dataSource)
// Register a handler to log exceptions
.setExceptionHandler(err -> log.error("An error occured during a database request", err))
// As an alternative you can make the query throw the exception instead of just logging it
.setThrowExceptions(true)
// This only affects batch queries.
// This will cause all batch queries being executed in a single transaction
// True is the default
.setAtomic(true)
// Register a RowMapperRegistry to map results.
.setRowMapperRegistry(new RowMapperRegistry().register(PostgresqlMapper.getDefaultMapper()))
.build();
After that you can use that config to create new queries
Using the static global configuration¶
Instead of passing your config everywhere, you can set the global configuration.
The default configuration is always used when the Query class is used to create a query.
To define the global configuration you just need to create it as in the previous section and pass it into the QueryConfiguration class.
Now you can use the Query class to directly dispatch queries.