composeUpsert function
Implementation
String composeUpsert(final Upsert st) {
final ImmutableUpsertStatement info = st.asImmutable;
final sb = new StringBuffer();
sb.write('INSERT OR REPLACE INTO ');
sb.write(info.table);
sb.write('(');
sb.write(info.values.keys.join(', '));
sb.write(') VALUES (');
sb.write(info.values.values.map(composeValue).join(', '));
sb.write(')');
sb.write(';');
return sb.toString();
}