Examples with ConstructorMapper org.jdbi.v3.core.mapper.reflect.ConstructorMapper used on opensource projects

Example 1 with ConstructorMapper

use of org.jdbi.v3.core.mapper.reflect.ConstructorMapper in project jdbi by jdbi.

the class ConstructorMapper method specialize0.

private RowMapper<T> specialize0(ResultSet rs, StatementContext ctx, List<String> columnNames, List<ColumnNameMatcher> columnNameMatchers, List<String> unmatchedColumns) throws SQLException {
    final int count = constructor.getParameterCount();
    final Parameter[] parameters = constructor.getParameters();
    final RowMapper<?>[] mappers = new RowMapper<?>[count];
    for (int i = 0; i < count; i++) {
        final Parameter parameter = parameters[i];
        Nested anno = parameter.getAnnotation(Nested.class);
        if (anno == null) {
            final String paramName = prefix + paramName(parameters, i, constructorProperties);
            final int columnIndex = findColumnIndex(paramName, columnNames, columnNameMatchers, () -> debugName(parameter)).orElseThrow(() -> new IllegalArgumentException(String.format("Constructor '%s' parameter '%s' has no column in the result set. " + "Verify that the Java compiler is configured to emit parameter names, " + "that your result set has the columns expected, or annotate the " + "parameter names explicitly with @ColumnName", constructor, paramName)));
            final Type type = parameter.getParameterizedType();
            mappers[i] = ctx.findColumnMapperFor(type).map(mapper -> new SingleColumnMapper(mapper, columnIndex + 1)).orElseThrow(() -> new IllegalArgumentException(String.format("Could not find column mapper for type '%s' of parameter '%s' for constructor '%s'", type, paramName, constructor)));
            unmatchedColumns.remove(columnNames.get(columnIndex));
        } else {
            String nestedPrefix = prefix + anno.value();
            mappers[i] = nestedMappers.computeIfAbsent(parameter, p -> new ConstructorMapper<>(findConstructorFor(p.getType()), nestedPrefix)).specialize0(rs, ctx, columnNames, columnNameMatchers, unmatchedColumns);
        }
    }
    return (r, c) -> {
        final Object[] params = new Object[count];
        for (int i = 0; i < count; i++) {
            params[i] = mappers[i].map(r, c);
        }
        return construct(params);
    };
}