marketbasedanalysisdatabase.cs

一个经典的apriori算法（c#实现）

            public event TransactionTableRowChangeEventHandler TransactionTableRowDeleted;
            
            public event TransactionTableRowChangeEventHandler TransactionTableRowDeleting;
            
            public void AddTransactionTableRow(TransactionTableRow row) {
                this.Rows.Add(row);
            }
            
            public TransactionTableRow AddTransactionTableRow(string Transactions) {
                TransactionTableRow rowTransactionTableRow = ((TransactionTableRow)(this.NewRow()));
                rowTransactionTableRow.ItemArray = new object[] {
                        null,
                        Transactions};
                this.Rows.Add(rowTransactionTableRow);
                return rowTransactionTableRow;
            }
            
            public TransactionTableRow FindByTransactionID(int TransactionID) {
                return ((TransactionTableRow)(this.Rows.Find(new object[] {
                            TransactionID})));
            }
            
            public System.Collections.IEnumerator GetEnumerator() {
                return this.Rows.GetEnumerator();
            }
            
            public override DataTable Clone() {
                TransactionTableDataTable cln = ((TransactionTableDataTable)(base.Clone()));
                cln.InitVars();
                return cln;
            }
            
            protected override DataTable CreateInstance() {
                return new TransactionTableDataTable();
            }
            
            internal void InitVars() {
                this.columnTransactionID = this.Columns["TransactionID"];
                this.columnTransactions = this.Columns["Transactions"];
            }
            
            private void InitClass() {
                this.columnTransactionID = new DataColumn("TransactionID", typeof(int), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnTransactionID);
                this.columnTransactions = new DataColumn("Transactions", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnTransactions);
                this.Constraints.Add(new UniqueConstraint("Constraint1", new DataColumn[] {
                                this.columnTransactionID}, true));
                this.columnTransactionID.AutoIncrement = true;
                this.columnTransactionID.AutoIncrementSeed = 1;
                this.columnTransactionID.AllowDBNull = false;
                this.columnTransactionID.Unique = true;
                this.columnTransactions.AllowDBNull = false;
            }

			
			private void InitClass(bool autoIncrement) 
			{
				this.columnTransactionID = new DataColumn("TransactionID", typeof(int), null, System.Data.MappingType.Element);
				this.Columns.Add(this.columnTransactionID);
				this.columnTransactions = new DataColumn("Transactions", typeof(string), null, System.Data.MappingType.Element);
				this.Columns.Add(this.columnTransactions);
				this.Constraints.Add(new UniqueConstraint("Constraint1", new DataColumn[] {this.columnTransactionID}, true));

				if (autoIncrement == true)
				{
					this.columnTransactionID.AutoIncrement = true;
					this.columnTransactionID.AutoIncrementSeed = 1;
				}
				else
				{
					this.columnTransactionID.AutoIncrement = false;
				}

				this.columnTransactionID.AllowDBNull = false;
				this.columnTransactionID.Unique = true;
				this.columnTransactions.AllowDBNull = false;
			}

            
            public TransactionTableRow NewTransactionTableRow() {
                return ((TransactionTableRow)(this.NewRow()));
            }
            
            protected override DataRow NewRowFromBuilder(DataRowBuilder builder) {
                return new TransactionTableRow(builder);
            }
            
            protected override System.Type GetRowType() {
                return typeof(TransactionTableRow);
            }
            
            protected override void OnRowChanged(DataRowChangeEventArgs e) {
                base.OnRowChanged(e);
                if ((this.TransactionTableRowChanged != null)) {
                    this.TransactionTableRowChanged(this, new TransactionTableRowChangeEvent(((TransactionTableRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowChanging(DataRowChangeEventArgs e) {
                base.OnRowChanging(e);
                if ((this.TransactionTableRowChanging != null)) {
                    this.TransactionTableRowChanging(this, new TransactionTableRowChangeEvent(((TransactionTableRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowDeleted(DataRowChangeEventArgs e) {
                base.OnRowDeleted(e);
                if ((this.TransactionTableRowDeleted != null)) {
                    this.TransactionTableRowDeleted(this, new TransactionTableRowChangeEvent(((TransactionTableRow)(e.Row)), e.Action));
                }
            }
            
            protected override void OnRowDeleting(DataRowChangeEventArgs e) {
                base.OnRowDeleting(e);
                if ((this.TransactionTableRowDeleting != null)) {
                    this.TransactionTableRowDeleting(this, new TransactionTableRowChangeEvent(((TransactionTableRow)(e.Row)), e.Action));
                }
            }
            
            public void RemoveTransactionTableRow(TransactionTableRow row) {
                this.Rows.Remove(row);
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class TransactionTableRow : DataRow {
            
            private TransactionTableDataTable tableTransactionTable;
            
            internal TransactionTableRow(DataRowBuilder rb) : 
                    base(rb) {
                this.tableTransactionTable = ((TransactionTableDataTable)(this.Table));
            }
            
            public int TransactionID {
                get {
                    return ((int)(this[this.tableTransactionTable.TransactionIDColumn]));
                }
                set {
                    this[this.tableTransactionTable.TransactionIDColumn] = value;
                }
            }
            
            public string Transactions {
                get {
                    return ((string)(this[this.tableTransactionTable.TransactionsColumn]));
                }
                set {
                    this[this.tableTransactionTable.TransactionsColumn] = value;
                }
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class TransactionTableRowChangeEvent : EventArgs {
            
            private TransactionTableRow eventRow;
            
            private DataRowAction eventAction;
            
            public TransactionTableRowChangeEvent(TransactionTableRow row, DataRowAction action) {
                this.eventRow = row;
                this.eventAction = action;
            }
            
            public TransactionTableRow Row {
                get {
                    return this.eventRow;
                }
            }
            
            public DataRowAction Action {
                get {
                    return this.eventAction;
                }
            }
        }
        
        [System.Diagnostics.DebuggerStepThrough()]
        public class ItemsetTableDataTable : DataTable, System.Collections.IEnumerable {
            
            private DataColumn columnItemID;
            
            private DataColumn columnItemset;
            
            private DataColumn columnLevel;
            
            private DataColumn columnSupportCount;
            
            internal ItemsetTableDataTable() : 
                    base("ItemsetTable") {
                this.InitClass();
            }
            
            internal ItemsetTableDataTable(DataTable table) : 
                    base(table.TableName) {
                if ((table.CaseSensitive != table.DataSet.CaseSensitive)) {
                    this.CaseSensitive = table.CaseSensitive;
                }
                if ((table.Locale.ToString() != table.DataSet.Locale.ToString())) {
                    this.Locale = table.Locale;
                }
                if ((table.Namespace != table.DataSet.Namespace)) {
                    this.Namespace = table.Namespace;
                }
                this.Prefix = table.Prefix;
                this.MinimumCapacity = table.MinimumCapacity;
                this.DisplayExpression = table.DisplayExpression;
            }
            
            [System.ComponentModel.Browsable(false)]
            public int Count {
                get {
                    return this.Rows.Count;
                }
            }
            
            internal DataColumn ItemIDColumn {
                get {
                    return this.columnItemID;
                }
            }
            
            internal DataColumn ItemsetColumn {
                get {
                    return this.columnItemset;
                }
            }
            
            internal DataColumn LevelColumn {
                get {
                    return this.columnLevel;
                }
            }
            
            internal DataColumn SupportCountColumn {
                get {
                    return this.columnSupportCount;
                }
            }
            
            public ItemsetTableRow this[int index] {
                get {
                    return ((ItemsetTableRow)(this.Rows[index]));
                }
            }
            
            public event ItemsetTableRowChangeEventHandler ItemsetTableRowChanged;
            
            public event ItemsetTableRowChangeEventHandler ItemsetTableRowChanging;
            
            public event ItemsetTableRowChangeEventHandler ItemsetTableRowDeleted;
            
            public event ItemsetTableRowChangeEventHandler ItemsetTableRowDeleting;
            
            public void AddItemsetTableRow(ItemsetTableRow row) {
                this.Rows.Add(row);
            }
            
            public ItemsetTableRow AddItemsetTableRow(string Itemset, int Level, int SupportCount) {
                ItemsetTableRow rowItemsetTableRow = ((ItemsetTableRow)(this.NewRow()));
                rowItemsetTableRow.ItemArray = new object[] {
                        null,
                        Itemset,
                        Level,
                        SupportCount};
                this.Rows.Add(rowItemsetTableRow);
                return rowItemsetTableRow;
            }
            
            public ItemsetTableRow FindByItemID(int ItemID) {
                return ((ItemsetTableRow)(this.Rows.Find(new object[] {
                            ItemID})));
            }
            
            public System.Collections.IEnumerator GetEnumerator() {
                return this.Rows.GetEnumerator();
            }
            
            public override DataTable Clone() {
                ItemsetTableDataTable cln = ((ItemsetTableDataTable)(base.Clone()));
                cln.InitVars();
                return cln;
            }
            
            protected override DataTable CreateInstance() {
                return new ItemsetTableDataTable();
            }
            
            internal void InitVars() {
                this.columnItemID = this.Columns["ItemID"];
                this.columnItemset = this.Columns["Itemset"];
                this.columnLevel = this.Columns["Level"];
                this.columnSupportCount = this.Columns["SupportCount"];
            }
            
            private void InitClass() {
                this.columnItemID = new DataColumn("ItemID", typeof(int), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnItemID);
                this.columnItemset = new DataColumn("Itemset", typeof(string), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnItemset);
                this.columnLevel = new DataColumn("Level", typeof(int), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnLevel);
                this.columnSupportCount = new DataColumn("SupportCount", typeof(int), null, System.Data.MappingType.Element);
                this.Columns.Add(this.columnSupportCount);
                this.Constraints.Add(new UniqueConstraint("Constraint1", new DataColumn[] {
                                this.columnItemID}, true));
                this.Constraints.Add(new UniqueConstraint("Constraint2", new DataColumn[] {
                                this.columnItemset}, false));
                this.columnItemID.AutoIncrement = true;
                this.columnItemID.AutoIncrementSeed = 1;
                this.columnItemID.AllowDBNull = false;
                this.columnItemID.Unique = true;
                this.columnItemset.AllowDBNull = false;
                this.columnItemset.Unique = true;
            }
            
            public ItemsetTableRow NewItemsetTableRow() {
                return ((ItemsetTableRow)(this.NewRow()));
            }
            
            protected override DataRow NewRowFromBuilder(DataRowBuilder builder) {
                return new ItemsetTableRow(builder);
            }
            
            protected override System.Type GetRowType() {
                return typeof(ItemsetTableRow);
            }
            
            protected override void OnRowChanged(DataRowChangeEventArgs e) {