/// <summary>
/// Creates a single index with the specified definition in the table
/// underlying this table definition
/// </summary>
/// <param name="indexDefinition">The index definition.</param>
public void CreateIndex(IndexDefinition indexDefinition)
{
lock (this.database.IsamSession)
{
using (IsamTransaction trx = new IsamTransaction(this.database.IsamSession))
{
// open the table
JET_TABLEID tableid;
Api.JetOpenTable(
this.database.IsamSession.Sesid,
this.database.Dbid,
this.name,
null,
0,
OpenTableGrbit.None,
out tableid);
// add the new index to the table
JET_INDEXCREATE[] indexcreates = new JET_INDEXCREATE[1] {
new JET_INDEXCREATE()
};
indexcreates[0].szIndexName = indexDefinition.Name;
indexcreates[0].szKey = DatabaseCommon.IndexKeyFromIndexDefinition(indexDefinition);
indexcreates[0].cbKey = indexcreates[0].szKey.Length;
indexcreates[0].grbit = DatabaseCommon.GrbitFromIndexDefinition(indexDefinition);
indexcreates[0].ulDensity = indexDefinition.Density;
indexcreates[0].pidxUnicode = new JET_UNICODEINDEX();
indexcreates[0].pidxUnicode.lcid = indexDefinition.CultureInfo.LCID;
indexcreates[0].pidxUnicode.dwMapFlags = Converter.MapFlagsFromUnicodeIndexFlags(Converter.UnicodeFlagsFromCompareOptions(indexDefinition.CompareOptions));
indexcreates[0].rgconditionalcolumn = DatabaseCommon.ConditionalColumnsFromIndexDefinition(indexDefinition);
indexcreates[0].cConditionalColumn = indexcreates[0].rgconditionalcolumn.Length;
indexcreates[0].cbKeyMost = indexDefinition.MaxKeyLength;
Api.JetCreateIndex2(this.database.IsamSession.Sesid, tableid, indexcreates, indexcreates.Length);
// commit our change
Api.JetCloseTable(this.database.IsamSession.Sesid, tableid);
trx.Commit();
DatabaseCommon.SchemaUpdateID++;
}
}
}