MergedNsContext.java 文件源码

private Map<String,Namespace> buildByPrefixMap()
{
    int len = mNamespaces.size();
    if (len == 0) {
        return Collections.emptyMap();
    }

    LinkedHashMap<String,Namespace> m = new LinkedHashMap<String,Namespace>(1 + len + (len>>1));
    for (int i = 0; i < len; ++i) {
        Namespace ns = mNamespaces.get(i);
        String prefix = ns.getPrefix();
        if (prefix == null) { // shouldn't happen but...
            prefix = "";
        }
        m.put(prefix, ns);
    }
    return m;
}