private static String ColumnsClause(string tableName, DataColumnCollection dcc, ConstraintCollection ccc)
{
string[] columns = new String[dcc.Count];
Int32 index = 0;
foreach (DataColumn dc in dcc)
{
String columnName = dc.ColumnName;
if (columnName == "oid")
{
columnName = "poid";
}
columns[index++] = string.Format(" \"{0}\" {1}{2}",
columnName, PostGisDbUtility.GetTypeString(dc.DataType),
dc.DefaultValue == DBNull.Value
?
""
:
String.Format(" DEFAULT {0}",
String.Format(CultureInfo.InvariantCulture, "{0}",
dc.DefaultValue)));
;
}
index = 0;
string[] constraints = new String[ccc.Count];
foreach (Constraint c in ccc)
{
UniqueConstraint uc = c as UniqueConstraint;
if (uc != null)
{
if (uc.IsPrimaryKey)
{
constraints[index++] = String.Format(
", CONSTRAINT \"{0}\" PRIMARY KEY ({1})",
String.Format("PK_{0}_{1}", tableName, uc.ConstraintName),
ColumnNamesToCommaSeparatedString(uc.Columns));
}
else
{
constraints[index++] = String.Format(
", CONSTRAINT \"{0}\" UNIQUE ({1})",
String.Format("UNI_{0}_{1}", tableName, uc.ConstraintName),
ColumnNamesToCommaSeparatedString(uc.Columns));
}
}
ForeignKeyConstraint fc = c as ForeignKeyConstraint;
if (fc != null)
{
constraints[index++] =
String.Format(
" CONSTRAINT \"{0}\" FOREIGN KEY ({1}) REFERENCES {2} ({3}) MATCH FULL ON UPDATE {4} ON DELETE {5}",
String.Format("FK_{0}_{1}_{3}", tableName, fc.RelatedTable.TableName, uc.ConstraintName),
ColumnNamesToCommaSeparatedString(fc.Columns),
fc.RelatedTable.TableName,
ColumnNamesToCommaSeparatedString(fc.RelatedColumns),
ruleToAction(fc.UpdateRule),
ruleToAction(fc.DeleteRule)
);
}
}
String constraintsClause = "";
if (index > 0)
{
Array.Resize(ref constraints, index);
constraintsClause = String.Join(String.Empty, constraints);
}
return(String.Join(",", columns) + constraintsClause);
}
