public PropertiesComparator()

in velocity-tools-generic/src/main/java/org/apache/velocity/tools/generic/CollectionTool.java [522:569]
37 lines of code
6 McCabe index (conditional complexity)

        public PropertiesComparator(List props)
        {
            // copy the list so we can safely drop :asc and :desc suffixes
            this.properties = new ArrayList(props.size());
            this.properties.addAll(props);

            // determine ascending/descending
            sortTypes = new int[properties.size()];

            for (int i = 0; i < properties.size(); i++)
            {
                if (properties.get(i) == null)
                {
                    throw new IllegalArgumentException("Property " + i
                            + "is null, sort properties may not be null.");
                }

                // determine if the property contains a sort type
                // e.g "Name:asc" means sort by property Name ascending
                String prop = properties.get(i).toString();
                int colonIndex = prop.indexOf(':');
                if (colonIndex != -1)
                {
                    String sortType = prop.substring(colonIndex + 1);
                    properties.set(i, prop.substring(0, colonIndex));

                    if (TYPE_ASCENDING_SHORT.equalsIgnoreCase(sortType))
                    {
                        sortTypes[i] = TYPE_ASCENDING;
                    }
                    else if (TYPE_DESCENDING_SHORT.equalsIgnoreCase(sortType))
                    {
                        sortTypes[i] = TYPE_DESCENDING;
                    }
                    else
                    {
                        //FIXME: log this
                        // invalid property sort type. use default instead.
                        sortTypes[i] = TYPE_ASCENDING;
                    }
                }
                else
                {
                    // default sort type is ascending.
                    sortTypes[i] = TYPE_ASCENDING;
                }
            }
        }