Beispiel #1
0
        /// <summary>
        /// Generates the SQL string to create this Table in the database.
        /// </summary>
        /// <param name="dialect">The <see cref="Dialect"/> to use for SQL rules.</param>
        /// <param name="p"></param>
        /// <param name="defaultCatalog"></param>
        /// <param name="defaultSchema"></param>
        /// <returns>
        /// A string that contains the SQL to create this Table, Primary Key Constraints
        /// , and Unique Key Constraints.
        /// </returns>
        public string SqlCreateString(Dialect.Dialect dialect, IMapping p, string defaultCatalog, string defaultSchema)
        {
            StringBuilder buf =
                new StringBuilder(HasPrimaryKey ? dialect.CreateTableString : dialect.CreateMultisetTableString).Append(' ').Append(
                    GetQualifiedName(dialect, defaultCatalog, defaultSchema)).Append(" (");

            bool identityColumn = idValue != null && idValue.IsIdentityColumn(dialect);

            // try to find out the name of the pk to create it as identity if the
            // identitygenerator is used
            string pkname = null;

            if (HasPrimaryKey && identityColumn)
            {
                foreach (Column col in PrimaryKey.ColumnIterator)
                {
                    pkname = col.GetQuotedName(dialect);                     //should only go through this loop once
                }
            }

            bool commaNeeded = false;

            foreach (Column col in ColumnIterator)
            {
                if (commaNeeded)
                {
                    buf.Append(StringHelper.CommaSpace);
                }
                commaNeeded = true;

                buf.Append(col.GetQuotedName(dialect)).Append(' ');

                if (identityColumn && col.GetQuotedName(dialect).Equals(pkname))
                {
                    // to support dialects that have their own identity data type
                    if (dialect.HasDataTypeInIdentityColumn)
                    {
                        buf.Append(col.GetSqlType(dialect, p));
                    }
                    buf.Append(' ').Append(dialect.GetIdentityColumnString(col.GetSqlTypeCode(p).DbType));
                }
                else
                {
                    buf.Append(col.GetSqlType(dialect, p));

                    if (!string.IsNullOrEmpty(col.DefaultValue))
                    {
                        buf.Append(" default ").Append(col.DefaultValue).Append(" ");
                    }

                    if (col.IsNullable)
                    {
                        buf.Append(dialect.NullColumnString);
                    }
                    else
                    {
                        buf.Append(" not null");
                    }
                }

                if (col.IsUnique)
                {
                    if (dialect.SupportsUnique)
                    {
                        buf.Append(" unique");
                    }
                    else
                    {
                        UniqueKey uk = GetUniqueKey(col.GetQuotedName(dialect) + "_");
                        uk.AddColumn(col);
                    }
                }

                if (col.HasCheckConstraint && dialect.SupportsColumnCheck)
                {
                    buf.Append(" check( ").Append(col.CheckConstraint).Append(") ");
                }

                if (string.IsNullOrEmpty(col.Comment) == false)
                {
                    buf.Append(dialect.GetColumnComment(col.Comment));
                }
            }
            if (HasPrimaryKey && (dialect.GenerateTablePrimaryKeyConstraintForIdentityColumn || !identityColumn))
            {
                buf.Append(StringHelper.CommaSpace).Append(PrimaryKey.SqlConstraintString(dialect, defaultSchema));
            }

            foreach (UniqueKey uk in UniqueKeyIterator)
            {
                buf.Append(',').Append(uk.SqlConstraintString(dialect));
            }

            if (dialect.SupportsTableCheck)
            {
                foreach (string checkConstraint in checkConstraints)
                {
                    buf.Append(", check (").Append(checkConstraint).Append(") ");
                }
            }

            if (!dialect.SupportsForeignKeyConstraintInAlterTable)
            {
                foreach (ForeignKey foreignKey in ForeignKeyIterator)
                {
                    if (foreignKey.HasPhysicalConstraint)
                    {
                        buf.Append(",").Append(foreignKey.SqlConstraintString(dialect, foreignKey.Name, defaultCatalog, defaultSchema));
                    }
                }
            }

            buf.Append(StringHelper.ClosedParen);

            if (string.IsNullOrEmpty(comment) == false)
            {
                buf.Append(dialect.GetTableComment(comment));
            }
            buf.Append(dialect.TableTypeString);

            return(buf.ToString());
        }
Beispiel #2
0
        /// <summary>
        /// Generates the SQL string to create this Table in the database.
        /// </summary>
        /// <param name="dialect">The <see cref="Dialect.Dialect"/> to use for SQL rules.</param>
        /// <param name="p"></param>
        /// <param name="defaultSchema"></param>
        /// <returns>
        /// A string that contains the SQL to create this Table, Primary Key Constraints
        /// , and Unique Key Constraints.
        /// </returns>
        public string SqlCreateString(Dialect.Dialect dialect, IMapping p, string defaultSchema)
        {
            StringBuilder buf = new StringBuilder("create table ")
                                .Append(GetQualifiedName(dialect, defaultSchema))
                                .Append(" (");

            bool identityColumn = idValue != null && idValue.CreateIdentifierGenerator(dialect) is IdentityGenerator;

            // try to find out the name of the pk to create it as identity if the
            // identitygenerator is used
            string pkname = null;

            if (primaryKey != null && identityColumn)
            {
                foreach (Column col in primaryKey.ColumnCollection)
                {
                    pkname = col.GetQuotedName(dialect);                       //should only go through this loop once
                }
            }

            int i = 0;

            foreach (Column col in ColumnCollection)
            {
                i++;
                buf.Append(col.GetQuotedName(dialect))
                .Append(' ')
                .Append(col.GetSqlType(dialect, p));

                if (identityColumn && col.GetQuotedName(dialect).Equals(pkname))
                {
                    buf.Append(' ')
                    .Append(dialect.IdentityColumnString);
                }
                else
                {
                    if (col.IsNullable)
                    {
                        buf.Append(dialect.NullColumnString);
                    }
                    else
                    {
                        buf.Append(" not null");
                    }
                }

                if (col.IsUnique)
                {
                    if (dialect.SupportsUnique)
                    {
                        buf.Append(" unique");
                    }
                    else
                    {
                        UniqueKey uk = GetUniqueKey(col.GetQuotedName(dialect) + "_");
                        uk.AddColumn(col);
                    }
                }
                if (i < ColumnCollection.Count)
                {
                    buf.Append(StringHelper.CommaSpace);
                }
            }

            if (primaryKey != null)
            {
                //if ( dialect is HSQLDialect && identityColumn ) {
                // // skip the primary key definition
                // //ugly hack...
                //} else {
                buf.Append(',').Append(primaryKey.SqlConstraintString(dialect, defaultSchema));
                //}
            }

            foreach (UniqueKey uk in UniqueKeyCollection)
            {
                buf.Append(',').Append(uk.SqlConstraintString(dialect));
            }

            buf.Append(StringHelper.ClosedParen);

            return(buf.ToString());
        }