io.dropwizard.jdbi.args.OptionalInstantArgumentFactory Maven / Gradle / Ivy
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package io.dropwizard.jdbi.args;
import org.skife.jdbi.v2.StatementContext;
import org.skife.jdbi.v2.tweak.Argument;
import org.skife.jdbi.v2.tweak.ArgumentFactory;
import java.time.Instant;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.Optional;
import java.util.TimeZone;
/**
* An {@link ArgumentFactory} for {@link Instant} arguments wrapped by {@link Optional}.
*/
public class OptionalInstantArgumentFactory implements ArgumentFactory> {
private final Optional calendar;
public OptionalInstantArgumentFactory() {
calendar = Optional.empty();
}
public OptionalInstantArgumentFactory(Optional timeZone) {
calendar = timeZone.map(GregorianCalendar::new);
}
@Override
public boolean accepts(Class expectedType, Object value, StatementContext ctx) {
if (value instanceof Optional) {
final Optional optionalValue = (Optional) value;
// Fall through to OptionalArgumentFactory if absent.
// Fall through to OptionalArgumentFactory if present, but not Instant.
return optionalValue.isPresent() && optionalValue.get() instanceof Instant;
}
return false;
}
@Override
public Argument build(Class expectedType, Optional value, StatementContext ctx) {
// accepts guarantees that the value is present
return new InstantArgument(value.orElse(null), calendar);
}
}