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//
// This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
// project.
//
// Copyright (C) 1998-2012 OpenLink Software
//
// This project is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation; only version 2 of the License, dated June 1991.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
//
//
//
// $Id$
//
using System;
using System.Diagnostics;
using System.Text;
using System.Collections;
using System.Collections.Generic;
#if ODBC_CLIENT
namespace OpenLink.Data.VirtuosoOdbcClient
#elif CLIENT
namespace OpenLink.Data.VirtuosoClient
#else
namespace OpenLink.Data.Virtuoso
#endif
{
internal enum SqlRdfBoxFlags {
RBS_OUTLINED = 0x01,
RBS_COMPLETE = 0x02,
RBS_HAS_LANG = 0x04,
RBS_HAS_TYPE = 0x08,
RBS_CHKSUM = 0x10,
RBS_64 = 0x20,
}
public sealed class SqlRdfBox
{
internal const int DEFAULT_TYPE = 257;
internal const int DEFAULT_LANG = 257;
private short rb_type;
private short rb_lang;
private bool rb_is_complete;
private bool rb_is_outlined;
private bool rb_chksum_tail;
private bool rb_is_text_index;
private long rb_ro_id;
private object rb_box;
private ManagedConnection connection = null;
internal SqlRdfBox (ManagedConnection connection, object box, bool is_complete, short rtype, short lang, long ro_id)
{
Debug.WriteLineIf (CLI.FnTrace.Enabled, "SqlRdfBox.ctor (connection, box, is_complete, rtype, lang, ro_id)");
this.connection = connection;
this.rb_box = box;
this.rb_type = rtype;
this.rb_lang = lang;
this.rb_is_complete = is_complete;
this.rb_ro_id = ro_id;
this.rb_is_outlined = false;
this.rb_chksum_tail = false;
}
internal SqlRdfBox (ManagedConnection connection, object box, string rtype, string lang)
{
Debug.WriteLineIf (CLI.FnTrace.Enabled, "SqlRdfBox.ctor (connection, box, rtype, lang)");
long ro_id;
this.connection = connection;
this.rb_box = box;
ro_id = rdfMakeObj (box, rtype, lang);
this.rb_type = GetTypeKey (rtype);
this.rb_lang = GetLangKey (lang);
this.rb_is_complete = false;
this.rb_ro_id = ro_id;
this.rb_is_outlined = false;
this.rb_chksum_tail = false;
}
private long rdfMakeObj (object box, string rtype, string lang)
{
long ro_id = 0;
VirtuosoParameterCollection p0 = new VirtuosoParameterCollection (null);
p0.Add("box", box);
p0.Add("type", rtype);
p0.Add("lang", lang);
ManagedCommand cmd0 = new ManagedCommand (connection);
cmd0.SetParameters (p0);
try
{
cmd0.Execute ("DB.DBA.RDF_MAKE_OBJ_OF_TYPEDSQLVAL (?, ?, ?)");
}
finally
{
cmd0.CloseCursor (true);
cmd0.Dispose ();
}
VirtuosoParameterCollection p1 = new VirtuosoParameterCollection (null);
p1.Add("box", box);
ManagedCommand cmd1 = new ManagedCommand (connection);
cmd1.SetParameters (p1);
try
{
cmd1.Execute ("select rdf_box_ro_id (?)");
while(cmd1.Fetch())
{
object data = cmd1.GetColumnData (0, cmd1.GetColumnMetaData ());
if (data != null)
ro_id = (long) data;
}
}
finally
{
cmd1.CloseCursor (true);
cmd1.Dispose ();
}
return ro_id;
}
internal short GetLangKey (string lang)
{
object k = null;
if (lang == null)
return (short) DEFAULT_LANG;
ensureLangHash ();
k = connection.rdf_lang_rev[lang];
return (k != null ? (short)k : (short)DEFAULT_LANG);
}
internal short GetTypeKey (string type)
{
object k = null;
if (type == null)
return (short) DEFAULT_TYPE;
ensureTypeHash ();
k = connection.rdf_type_rev[type];
return (k != null ? (short)k : (short) DEFAULT_TYPE);
}
private void fillHashFromSQL (Dictionary<int,string> ht, Hashtable rev, string sql)
{
ManagedCommand cmd = new ManagedCommand (connection);
cmd.SetParameters (null);
try
{
cmd.Execute (sql);
while(cmd.Fetch())
{
int k = 0;
string v = null;
object data = cmd.GetColumnData (0, cmd.GetColumnMetaData ());
if (data != null)
k = (int) data;
data = cmd.GetColumnData (1, cmd.GetColumnMetaData ());
if (data != null && data is string)
v = (string) data;
ht[k] = v;
rev[v] = k;
}
}
finally
{
cmd.CloseCursor (true);
cmd.Dispose ();
}
}
private void ensureTypeHash ()
{
if (connection.rdf_type_hash.Count == 0)
{
fillHashFromSQL (connection.rdf_type_hash, connection.rdf_type_rev, "select RDT_TWOBYTE, RDT_QNAME from DB.DBA.RDF_DATATYPE");
}
}
private void ensureLangHash ()
{
if (connection.rdf_lang_hash.Count == 0)
{
fillHashFromSQL (connection.rdf_lang_hash, connection.rdf_lang_rev, "select RL_TWOBYTE, RL_ID from DB.DBA.RDF_LANGUAGE");
}
}
public string StrType
{
get {
ensureTypeHash ();
string s;
if (connection.rdf_type_hash.TryGetValue(rb_type, out s))
return s;
else
return null;
}
}
public string StrLang
{
get {
ensureLangHash ();
string s;
if (connection.rdf_lang_hash.TryGetValue(rb_lang, out s))
return s;
else
return null;
}
}
public object Value
{
get {
return rb_box;
}
}
public override string ToString()
{
Debug.WriteLineIf (CLI.FnTrace.Enabled, "SqlRdfBox.ToString ()");
return rb_box.ToString();
}
}
}
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