TypeVersionMapper.java 文件源码

/**
 * Retrieves the specified version of a {@linkplain CompositeType} instance.
 * @param type The current (latest) version of {@linkplain CompositeType}
 * @param version The version identifier (eg. {@linkplain TypeVersionMapper#V5})
 * @return Returns the {@linkplain CompositeType} corresponding to the requested
 *         version.
 * @throws OpenDataException
 */
CompositeType getVersionedCompositeType(CompositeType type, String version)
    throws OpenDataException
{
    Predicate<String> filter = getFilter(type.getTypeName(), version);
    if (filter == null) {
        return type;
    }

    List<String> itemNames = new ArrayList<>();
    List<String> itemDesc = new ArrayList<>();
    List<OpenType<?>> itemTypes = new ArrayList<>();

    for(String item : type.keySet()) {
        if (filter.test(item)) {
            itemNames.add(item);
            itemDesc.add(type.getDescription(item));
            itemTypes.add(getVersionedType(
                type.getType(item),
                version
            ));
        }
    }
    return new CompositeType(
        type.getTypeName(),
        version != null ? version + " " + type.getDescription() : type.getDescription(),
        itemNames.toArray(new String[itemNames.size()]),
        itemDesc.toArray(new String[itemDesc.size()]),
        itemTypes.toArray(new OpenType<?>[itemTypes.size()])
    );
}