////////////////////////////////////////////////////////
public static void ReadKeywordMappings()
{
property_table = new Hashtable();
// FIXME: No need for a SerializerFactory here, since we need the serializer
// only once
XmlSerializerFactory xsf = new XmlSerializerFactory();
XmlSerializer xs = xsf.CreateSerializer(typeof(QueryMapping), new Type[] { typeof(QueryKeywordMapping) });
QueryMapping query_mapping = null;
// <keyword name, can override>
Dictionary <string, bool> mapping_override = new Dictionary <string, bool> ();
using (Stream s = File.OpenRead(Path.Combine(PathFinder.ConfigDataDir, "query-mapping.xml"))) {
try {
query_mapping = (QueryMapping)xs.Deserialize(s);
foreach (QueryKeywordMapping mapping in query_mapping.Mappings)
{
PropertyKeywordFu.RegisterMapping(mapping);
mapping_override [mapping.Keyword] = true;
}
} catch (XmlException e) {
Logger.Log.Error(e, "Unable to parse global query-mapping.xml");
}
}
// Override global mappings by local mappings
if (!File.Exists(Path.Combine(PathFinder.StorageDir, "query-mapping.xml")))
{
return;
}
using (Stream s = File.OpenRead(Path.Combine(PathFinder.StorageDir, "query-mapping.xml"))) {
try {
query_mapping = (QueryMapping)xs.Deserialize(s);
foreach (QueryKeywordMapping mapping in query_mapping.Mappings)
{
if (mapping_override.ContainsKey(mapping.Keyword))
{
property_table.Remove(mapping.Keyword);
mapping_override [mapping.Keyword] = false;
}
PropertyKeywordFu.RegisterMapping(mapping);
}
} catch (XmlException e) {
Logger.Log.Error(e, "Unable to parse local query-mapping.xml");
}
}
}
// gmcs QueryStringParser.cs -r:../Util/Util.dll -r:../BeagleClient/Beagle.dll PropertyKeywordFu.cs
public static void Main()
{
PropertyKeywordFu.ReadKeywordMappings();
while (true)
{
string input = Console.ReadLine();
if (input == String.Empty)
{
continue;
}
Console.WriteLine("Parsing query string '{0}'", input);
foreach (QueryPart part in Parse(input))
{
Console.WriteLine(part.ToString());
}
}
}
static public void Start()
{
// Only add the executing assembly if we haven't already loaded it.
if (assemblies.IndexOf(Assembly.GetExecutingAssembly()) == -1)
{
assemblies.Add(Assembly.GetExecutingAssembly());
}
foreach (Assembly assembly in assemblies)
{
ScanAssemblyForQueryables(assembly);
// This allows backends to define their
// own executors.
Server.ScanAssemblyForExecutors(assembly);
}
assemblies = null;
PropertyKeywordFu.ReadKeywordMappings();
LoadSystemIndexes();
LoadStaticQueryables();
if (indexing_delay < 0)
{
return;
}
if (indexing_delay == 0 || Environment.GetEnvironmentVariable("BEAGLE_EXERCISE_THE_DOG") != null)
{
StartQueryables();
}
else
{
Logger.Log.Debug("Waiting {0} seconds before starting queryables", indexing_delay);
GLib.Timeout.Add((uint)indexing_delay * 1000, new GLib.TimeoutHandler(StartQueryables));
}
}
static private QueryPart MatchToQueryPart(Match m)
{
// Looping over all Matches we have got:
// m.Groups["pm"] plus or minus sign
// m.Groups["key"] keyname
// m.Groups["quote"] quoted string
// m.Groups["midquote1"] + m.Groups["midquote2"] quoted midway string also represents unquoted string
string query = m.ToString();
// Either quote is set or midquote1 and (optionally) midquote2 is set
string text = m.Groups ["quote"].ToString() + m.Groups ["midquote1"].ToString() + m.Groups ["midquote2"].ToString();
string key = m.Groups ["key"].ToString();
bool IsProhibited = (m.Groups ["pm"].ToString() == "-");
// check for file extensions
// if match starts with *. or . and only contains letters we assume it's a file extension
if (extension_re.Match(text).Success || key.ToLower() == "ext" || key.ToLower() == "extension")
{
QueryPart_Property query_part = new QueryPart_Property();
query_part.Key = Property.FilenameExtensionPropKey;
if (text.StartsWith("*."))
{
query_part.Value = text.Substring(1).ToLower();
}
else if (text.StartsWith("."))
{
query_part.Value = text.ToLower();
}
else
{
query_part.Value = "." + text.ToLower();
}
query_part.Type = PropertyType.Keyword;
query_part.Logic = (IsProhibited ? QueryPartLogic.Prohibited : QueryPartLogic.Required);
Logger.Log.Debug("Extension query: {0}", query_part.Value);
return(query_part);
}
if (key == String.Empty)
{
Logger.Log.Debug("Parsed query '{0}' as text_query", text);
return(StringToQueryPart(text, IsProhibited));
}
// FIXME: i18n-izing "date"
if (key == "date")
{
try {
QueryPart part = DateQueryToQueryPart(text);
part.Logic = (IsProhibited ? QueryPartLogic.Prohibited : QueryPartLogic.Required);
return(part);
} catch (FormatException) {
Log.Warn("Could not parse [{0}] as date query. Assuming text.", text);
return(StringToQueryPart(text, IsProhibited));
}
}
// FIXME: i18n-izing "uri"
if (key == "uri")
{
try {
QueryPart_Uri part = new QueryPart_Uri();
part.Logic = (IsProhibited ? QueryPartLogic.Prohibited : QueryPartLogic.Required);
// uri: queries require the raw Uri as present in the index
part.Uri = new Uri(text, true);
return(part);
} catch (System.UriFormatException) {
Log.Warn("Could not parse [{0}] as uri query. Assuming text.", text);
return(StringToQueryPart(text, IsProhibited));
}
}
// Special case
if (key == "inuri")
{
QueryPart_Property inuri_part = new QueryPart_Property();
inuri_part.Logic = (IsProhibited ? QueryPartLogic.Prohibited : QueryPartLogic.Required);
inuri_part.Key = "inuri";
inuri_part.Value = text;
inuri_part.Type = PropertyType.Keyword;
Log.Debug("Handing special query 'inuri:{0}'", text);
return(inuri_part);
}
// Non-keyword queries by directly using property names
// Query of form property:namespace:name=value
// which is translated to a non-keyword query
// namespace:name=value
int pos;
if (key == "property" && ((pos = text.IndexOf('=')) != -1))
{
QueryPart_Property part = new QueryPart_Property();
part.Key = text.Substring(0, pos);
part.Value = text.Substring(pos + 1);
part.Type = PropertyType.Text;
part.Logic = (IsProhibited ? QueryPartLogic.Prohibited : QueryPartLogic.Required);
Logger.Log.Debug("Parsed query '" + query +
"' as prop query:key=" + part.Key +
", value=" + part.Value +
" and property type=" + part.Type);
return(part);
}
// keyword queries by directly using property names
// Query of form keyword:namespace:name=value
// which is translated to a keyword query
// namespace:name=value
if (key == "keyword" && ((pos = text.IndexOf('=')) != -1))
{
QueryPart_Property part = new QueryPart_Property();
part.Key = text.Substring(0, pos);
part.Value = text.Substring(pos + 1);
part.Type = PropertyType.Keyword;
part.Logic = (IsProhibited ? QueryPartLogic.Prohibited : QueryPartLogic.Required);
Logger.Log.Debug("Parsed query '" + query +
"' as prop query:key=" + part.Key +
", value=" + part.Value +
" and property type=" + part.Type);
return(part);
}
string[] prop_string = null;
bool is_present;
PropertyType[] prop_type;
int num;
is_present = PropertyKeywordFu.GetMapping(key, out num, out prop_string, out prop_type);
// if key is not present in the mapping, assume the query is a text query
// i.e. if token is foo:bar and there is no mappable property named foo,
// assume "foo:bar" as text query
// FIXME the analyzer changes the text query "foo:bar" to "foo bar"
// which might not be the right thing to do
if (!is_present)
{
Logger.Log.Warn("Could not find property, parsed query '{0}' as text_query", query);
return(StringToQueryPart(query, IsProhibited));
}
if (num == 1)
{
QueryPart_Property query_part_prop = new QueryPart_Property();
query_part_prop.Key = prop_string [0];
query_part_prop.Value = text;
query_part_prop.Type = prop_type [0];
query_part_prop.Logic = (IsProhibited ? QueryPartLogic.Prohibited : QueryPartLogic.Required);
Logger.Log.Debug("Parsed query '" + query +
"' as prop query:key=" + query_part_prop.Key +
", value=" + query_part_prop.Value +
" and property type=" + query_part_prop.Type);
return(query_part_prop);
}
// Multiple property queries are mapped to this keyword query
// Create an OR query from them
// FIXME: Would anyone want an AND query ?
QueryPart_Or query_part_or = new QueryPart_Or();
query_part_or.Logic = (IsProhibited ? QueryPartLogic.Prohibited : QueryPartLogic.Required);
Logger.Log.Debug("Parsed query '{0}' as OR of {1} queries:", query, num);
for (int i = 0; i < num; ++i)
{
QueryPart_Property query_part_prop = new QueryPart_Property();
query_part_prop.Key = prop_string [i];
query_part_prop.Value = text;
query_part_prop.Type = prop_type [i];
query_part_prop.Logic = QueryPartLogic.Required;
Log.Debug("\t:key={0}, value={1} and property type={2}", query_part_prop.Key, query_part_prop.Value, query_part_prop.Type);
query_part_or.Add(query_part_prop);
}
return(query_part_or);
}
