package io.dropwizard.jdbi.args;

import com.google.common.base.Optional;
import org.joda.time.DateTime;
import org.skife.jdbi.v2.StatementContext;
import org.skife.jdbi.v2.tweak.Argument;
import org.skife.jdbi.v2.tweak.ArgumentFactory;

import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.TimeZone;

An ArgumentFactory for Joda's DateTime arguments wrapped by Guava's Optional.
/** * An {@link ArgumentFactory} for Joda's {@link DateTime} arguments wrapped by Guava's {@link Optional}. */
public class GuavaOptionalJodaTimeArgumentFactory implements ArgumentFactory<Optional<DateTime>> { private final java.util.Optional<Calendar> calendar; public GuavaOptionalJodaTimeArgumentFactory() { calendar = java.util.Optional.empty(); } public GuavaOptionalJodaTimeArgumentFactory(java.util.Optional<TimeZone> 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 DateTime. return optionalValue.isPresent() && optionalValue.get() instanceof DateTime; } return false; } @Override public Argument build(Class<?> expectedType, Optional<DateTime> value, StatementContext ctx) { // accepts guarantees that the value is present return new JodaDateTimeArgument(value.get(), calendar); } }