org.simpleflatmapper.jdbc.NameBasedResultSetGetterFactory Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of sfm-jdbc Show documentation
Show all versions of sfm-jdbc Show documentation
Java library to map flat record - ResultSet, csv - to java object with minimum configuration and low footprint.
package org.simpleflatmapper.jdbc;
import org.simpleflatmapper.map.mapper.AbstractColumnNameDiscriminatorMapperFactory;
import org.simpleflatmapper.reflect.Getter;
import java.sql.ResultSet;
public final class NameBasedResultSetGetterFactory implements AbstractColumnNameDiscriminatorMapperFactory.DiscriminatorNamedGetterFactory {
public static final NameBasedResultSetGetterFactory INSTANCE = new NameBasedResultSetGetterFactory();
private NameBasedResultSetGetterFactory() {
}
@Override
public AbstractColumnNameDiscriminatorMapperFactory.DiscriminatorNamedGetter newGetter(final Class type) {
return new AbstractColumnNameDiscriminatorMapperFactory.DiscriminatorNamedGetter() {
@Override
public T get(ResultSet resultSet, String discriminatorColumn) throws Exception {
try {
return resultSet.getObject(discriminatorColumn, type);
} catch (NoSuchMethodError e) {
throw jdbc40Error(resultSet, e);
} catch (UnsupportedOperationException e) {
throw jdbc40Error(resultSet, e);
}
}
};
}
private Exception jdbc40Error(ResultSet target, Throwable e) {
String message = "The ResultSet " + target.getClass().getName() + " does not support the T getObject(String, Class) method, " +
"you will need to use the JdbcMapperFactory.discriminator(Class commonType, final String discriminatorColumn, CheckedBiFunction discriminatorFieldAccessor, Consumer> consumer) call passing ResultSet::getXXX as the discriminatorFieldAccessor reason : " + e.getMessage();
return new UnsupportedOperationException(message, e);
}
}