void addRelation(string refName, string mainTable, string subTable, string mainField, string subField)
{
DatabaseTable mTbl = FindTable(mainTable);
DatabaseTable sbTbl = FindTable(subTable);
if (mTbl != null && sbTbl != null)
{
EPField mFld = mTbl.FindField(mainField);
EPField subFld = sbTbl.FindField(subField);
if (Relations == null)
{
Relations = new TableRelations();
}
Relations.AddJoinFields(refName, mainTable, subTable, mFld, subFld);
}
}
public void LoadTables()
{
Tables = null;
Relations = null;
if (dbCon.TheConnection is OdbcConnection)
{
Tables = dbCon.ODBC_GetTables();
}
else
{
System.Data.DataTable schema = dbCon.GetTables();
if (schema == null)
{
return;
}
if (schema.Rows.Count > 0)
{
System.Data.DataRow row = null;
int n;
string s;
int nCount = 0;
DatabaseTable[] Tables0 = new DatabaseTable[schema.Rows.Count];
for (n = 0; n < schema.Rows.Count; n++)
{
row = schema.Rows[n];
s = row["Table_type"].ToString();
if (string.Compare(s, "TABLE", StringComparison.OrdinalIgnoreCase) == 0 ||
string.Compare(s, "BASE TABLE", StringComparison.OrdinalIgnoreCase) == 0)
{
Tables0[nCount] = new DatabaseTable();
Tables0[nCount].TableName = row["Table_Name"].ToString();
nCount++;
}
}
Tables = new DatabaseTable[nCount];
for (n = 0; n < nCount; n++)
{
Tables[n] = Tables0[n];
}
}
}
}
public void LoadRelations()
{
int i;
Relations = new TableRelations();
string refName, mainTable, subTable, mainField, subField;
System.Data.DataTable schemaRelation = dbCon.GetRelations();
if (schemaRelation == null)
{
return;
}
for (i = 0; i < schemaRelation.Rows.Count; i++)
{
mainTable = schemaRelation.Rows[i]["PK_TABLE_NAME"].ToString();
subTable = schemaRelation.Rows[i]["FK_TABLE_NAME"].ToString();
mainField = schemaRelation.Rows[i]["PK_COLUMN_NAME"].ToString();
subField = schemaRelation.Rows[i]["FK_COLUMN_NAME"].ToString();
refName = schemaRelation.Rows[i]["FK_NAME"].ToString();
addRelation(refName, mainTable, subTable, mainField, subField);
}
}