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Latest and greatest version of Massive copied/pasted and then adapted…

… for Oracle (like before), including the TryInvokeMember. Not sure if the Last/First works properly with the ROWNUM=1 added.
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commit aff366c00499e623e37f70f5daa7aba9de2a2dc9 1 parent a9b7fdf
@mountain65 mountain65 authored
Showing with 424 additions and 208 deletions.
  1. +424 −208 Massive.Oracle.cs
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632 Massive.Oracle.cs
@@ -8,46 +8,33 @@
using System.Linq;
using System.Text;
-namespace Massive.Oracle
-{
- public static class ObjectExtensions
- {
+namespace Massive {
+ public static class ObjectExtensions {
/// <summary>
/// Extension method for adding in a bunch of parameters
/// </summary>
- public static void AddParams(this DbCommand cmd, params object[] args)
- {
- foreach (var item in args)
- {
+ public static void AddParams(this DbCommand cmd, params object[] args) {
+ foreach (var item in args) {
AddParam(cmd, item);
}
}
/// <summary>
/// Extension for adding single parameter
/// </summary>
- public static void AddParam(this DbCommand cmd, object item)
- {
+ public static void AddParam(this DbCommand cmd, object item) {
var p = cmd.CreateParameter();
- p.ParameterName = string.Format(":", cmd.Parameters.Count);
- if (item == null)
- {
+ p.ParameterName = string.Format(":{0}", cmd.Parameters.Count);
+ if (item == null) {
p.Value = DBNull.Value;
- }
- else
- {
- if (item.GetType() == typeof(Guid))
- {
+ } else {
+ if (item.GetType() == typeof(Guid)) {
p.Value = item.ToString();
p.DbType = DbType.String;
p.Size = 4000;
- }
- else if (item.GetType() == typeof(ExpandoObject))
- {
+ } else if (item.GetType() == typeof(ExpandoObject)) {
var d = (IDictionary<string, object>)item;
p.Value = d.Values.FirstOrDefault();
- }
- else
- {
+ } else {
p.Value = item;
}
if (item.GetType() == typeof(string))
@@ -58,17 +45,14 @@ public static void AddParam(this DbCommand cmd, object item)
/// <summary>
/// Turns an IDataReader to a Dynamic list of things
/// </summary>
- public static List<dynamic> ToExpandoList(this IDataReader rdr)
- {
+ public static List<dynamic> ToExpandoList(this IDataReader rdr) {
var result = new List<dynamic>();
- while (rdr.Read())
- {
+ while (rdr.Read()) {
result.Add(rdr.RecordToExpando());
}
return result;
}
- public static dynamic RecordToExpando(this IDataReader rdr)
- {
+ public static dynamic RecordToExpando(this IDataReader rdr) {
dynamic e = new ExpandoObject();
var d = e as IDictionary<string, object>;
for (int i = 0; i < rdr.FieldCount; i++)
@@ -78,95 +62,163 @@ public static dynamic RecordToExpando(this IDataReader rdr)
/// <summary>
/// Turns the object into an ExpandoObject
/// </summary>
- public static dynamic ToExpando(this object o)
- {
+ public static dynamic ToExpando(this object o) {
var result = new ExpandoObject();
var d = result as IDictionary<string, object>; //work with the Expando as a Dictionary
if (o.GetType() == typeof(ExpandoObject)) return o; //shouldn't have to... but just in case
- if (o.GetType() == typeof(NameValueCollection) || o.GetType().IsSubclassOf(typeof(NameValueCollection)))
- {
+ if (o.GetType() == typeof(NameValueCollection) || o.GetType().IsSubclassOf(typeof(NameValueCollection))) {
var nv = (NameValueCollection)o;
nv.Cast<string>().Select(key => new KeyValuePair<string, object>(key, nv[key])).ToList().ForEach(i => d.Add(i));
- }
- else
- {
+ } else {
var props = o.GetType().GetProperties();
- foreach (var item in props)
- {
+ foreach (var item in props) {
d.Add(item.Name, item.GetValue(o, null));
}
}
return result;
}
+
/// <summary>
/// Turns the object into a Dictionary
/// </summary>
- public static IDictionary<string, object> ToDictionary(this object thingy)
- {
+ public static IDictionary<string, object> ToDictionary(this object thingy) {
return (IDictionary<string, object>)thingy.ToExpando();
}
}
+
+ /// <summary>
+ /// Convenience class for opening/executing data
+ /// </summary>
+ public static class DB {
+ public static DynamicModel Current {
+ get {
+ if (ConfigurationManager.ConnectionStrings.Count > 1) {
+ return new DynamicModel(ConfigurationManager.ConnectionStrings[1].Name);
+ }
+ throw new InvalidOperationException("Need a connection string name - can't determine what it is");
+ }
+ }
+ }
+
/// <summary>
/// A class that wraps your database table in Dynamic Funtime
/// </summary>
- public class DynamicModel
- {
+ public class DynamicModel : DynamicObject {
DbProviderFactory _factory;
- string _connectionString;
- string _prefix = ":";
+ string ConnectionString;
string _sequence;
- public DynamicModel(string connectionStringName = "", string tableName = "", string primaryKeyField = "", string sequence = "")
+ public static DynamicModel Open(string connectionStringName)
{
+ dynamic dm = new DynamicModel(connectionStringName);
+ return dm;
+ }
+
+ public DynamicModel(string connectionStringName, string tableName = "",
+ string primaryKeyField = "", string descriptorField = "", string sequence = "") {
TableName = tableName == "" ? this.GetType().Name : tableName;
PrimaryKeyField = string.IsNullOrEmpty(primaryKeyField) ? "ID" : primaryKeyField;
- if (connectionStringName == "")
- connectionStringName = ConfigurationManager.ConnectionStrings[0].Name;
- var _providerName = "System.Data.OracleClient"; //reasonable default
- if (ConfigurationManager.ConnectionStrings[connectionStringName] != null)
- {
- if (!string.IsNullOrEmpty(ConfigurationManager.ConnectionStrings[connectionStringName].ProviderName))
- _providerName = ConfigurationManager.ConnectionStrings[connectionStringName].ProviderName;
- }
- else
- throw new InvalidOperationException("Can't find a connection string with the name '" + connectionStringName + "'");
+
_sequence = sequence == "" ? ConfigurationManager.AppSettings["default_seq"] : sequence;
- _factory = DbProviderFactories.GetFactory(_providerName);
- _connectionString = ConfigurationManager.ConnectionStrings[connectionStringName].ConnectionString;
+ _factory = DbProviderFactories.GetFactory("System.Data.OracleClient");
+ if (ConfigurationManager.ConnectionStrings[connectionStringName] == null)
+ ConnectionString = connectionStringName;
+ else
+ ConnectionString = ConfigurationManager.ConnectionStrings[connectionStringName].ConnectionString;
}
+
+ /// <summary>
+ /// Creates a new Expando from a Form POST - white listed against the columns in the DB
+ /// </summary>
+ public dynamic CreateFrom(NameValueCollection coll) {
+ dynamic result = new ExpandoObject();
+ var dc = (IDictionary<string, object>)result;
+ var schema = Schema;
+ //loop the collection, setting only what's in the Schema
+ foreach (var item in coll.Keys) {
+ var exists = schema.Any(x => x.COLUMN_NAME.ToLower() == item.ToString().ToLower());
+ if (exists) {
+ var key = item.ToString();
+ var val = coll[key];
+ dc.Add(key, val);
+ }
+ }
+ return result;
+ }
+ /// <summary>
+ /// Gets a default value for the column
+ /// </summary>
+ public dynamic DefaultValue(dynamic column) {
+ dynamic result = null;
+ string def = column.COLUMN_DEFAULT;
+ if (String.IsNullOrEmpty(def)) {
+ result = null;
+ } else if (def == "getdate()" || def == "(getdate())") {
+ result = DateTime.Now.ToShortDateString();
+ } else if (def == "newid()") {
+ result = Guid.NewGuid().ToString();
+ } else {
+ result = def.Replace("(", "").Replace(")", "");
+ }
+ return result;
+ }
+ /// <summary>
+ /// Creates an empty Expando set with defaults from the DB
+ /// </summary>
+ public dynamic Prototype {
+ get {
+ dynamic result = new ExpandoObject();
+ var schema = Schema;
+ foreach (dynamic column in schema) {
+ var dc = (IDictionary<string, object>)result;
+ dc.Add(column.COLUMN_NAME, DefaultValue(column));
+ }
+ result._Table = this;
+ return result;
+ }
+ }
+ private string _descriptorField;
+ public string DescriptorField {
+ get {
+ return _descriptorField;
+ }
+ }
+ /// <summary>
+ /// List out all the schema bits for use with ... whatever
+ /// </summary>
+ IEnumerable<dynamic> _schema;
+ public IEnumerable<dynamic> Schema {
+ get {
+ if (_schema == null)
+ _schema = Query("SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = @0", TableName);
+ return _schema;
+ }
+ }
+
/// <summary>
/// Enumerates the reader yielding the result - thanks to Jeroen Haegebaert
/// </summary>
- public virtual IEnumerable<dynamic> Query(string sql, params object[] args)
- {
- using (var conn = OpenConnection())
- {
+ public virtual IEnumerable<dynamic> Query(string sql, params object[] args) {
+ using (var conn = OpenConnection()) {
var rdr = CreateCommand(sql, conn, args).ExecuteReader();
- while (rdr.Read())
- {
+ while (rdr.Read()) {
yield return rdr.RecordToExpando(); ;
}
}
}
- public virtual IEnumerable<dynamic> Query(string sql, DbConnection connection, params object[] args)
- {
- using (var rdr = CreateCommand(sql, connection, args).ExecuteReader())
- {
- while (rdr.Read())
- {
+ public virtual IEnumerable<dynamic> Query(string sql, DbConnection connection, params object[] args) {
+ using (var rdr = CreateCommand(sql, connection, args).ExecuteReader()) {
+ while (rdr.Read()) {
yield return rdr.RecordToExpando(); ;
}
}
-
}
/// <summary>
/// Returns a single result
/// </summary>
- public virtual object Scalar(string sql, params object[] args)
- {
+ public virtual object Scalar(string sql, params object[] args) {
object result = null;
- using (var conn = OpenConnection())
- {
+ using (var conn = OpenConnection()) {
result = CreateCommand(sql, conn, args).ExecuteScalar();
}
return result;
@@ -174,8 +226,7 @@ public virtual object Scalar(string sql, params object[] args)
/// <summary>
/// Creates a DBCommand that you can use for loving your database.
/// </summary>
- DbCommand CreateCommand(string sql, DbConnection conn, params object[] args)
- {
+ public DbCommand CreateCommand(string sql, DbConnection conn, params object[] args) {
var result = _factory.CreateCommand();
result.Connection = conn;
result.CommandText = sql;
@@ -186,10 +237,9 @@ DbCommand CreateCommand(string sql, DbConnection conn, params object[] args)
/// <summary>
/// Returns and OpenConnection
/// </summary>
- public virtual DbConnection OpenConnection()
- {
+ public virtual DbConnection OpenConnection() {
var result = _factory.CreateConnection();
- result.ConnectionString = _connectionString;
+ result.ConnectionString = ConnectionString;
result.Open();
return result;
}
@@ -198,49 +248,34 @@ public virtual DbConnection OpenConnection()
/// These objects can be POCOs, Anonymous, NameValueCollections, or Expandos. Objects
/// With a PK property (whatever PrimaryKeyField is set to) will be created at UPDATEs
/// </summary>
- public virtual List<DbCommand> BuildCommands(params object[] things)
- {
+ public virtual List<DbCommand> BuildCommands(params object[] things) {
var commands = new List<DbCommand>();
- foreach (var item in things)
- {
- if (HasPrimaryKey(item))
- {
+ foreach (var item in things) {
+ if (HasPrimaryKey(item)) {
commands.Add(CreateUpdateCommand(item, GetPrimaryKey(item)));
- }
- else
- {
+ } else {
commands.Add(CreateInsertCommand(item));
}
}
-
return commands;
}
- /// <summary>
- /// Executes a set of objects as Insert or Update commands based on their property settings, within a transaction.
- /// These objects can be POCOs, Anonymous, NameValueCollections, or Expandos. Objects
- /// With a PK property (whatever PrimaryKeyField is set to) will be created at UPDATEs
- /// </summary>
- public virtual int Save(params object[] things)
- {
- var commands = BuildCommands(things);
- return Execute(commands);
- }
- public virtual int Execute(DbCommand command)
- {
+
+
+ public virtual int Execute(DbCommand command) {
return Execute(new DbCommand[] { command });
}
+
+ public virtual int Execute(string sql, params object[] args) {
+ return Execute(CreateCommand(sql, null, args));
+ }
/// <summary>
/// Executes a series of DBCommands in a transaction
/// </summary>
- public virtual int Execute(IEnumerable<DbCommand> commands)
- {
+ public virtual int Execute(IEnumerable<DbCommand> commands) {
var result = 0;
- using (var conn = OpenConnection())
- {
- using (var tx = conn.BeginTransaction())
- {
- foreach (var cmd in commands)
- {
+ using (var conn = OpenConnection()) {
+ using (var tx = conn.BeginTransaction()) {
+ foreach (var cmd in commands) {
cmd.Connection = conn;
cmd.Transaction = tx;
result += cmd.ExecuteNonQuery();
@@ -255,184 +290,365 @@ public virtual int Execute(IEnumerable<DbCommand> commands)
/// Conventionally introspects the object passed in for a field that
/// looks like a PK. If you've named your PrimaryKeyField, this becomes easy
/// </summary>
- public virtual bool HasPrimaryKey(object o)
- {
+ public virtual bool HasPrimaryKey(object o) {
return o.ToDictionary().ContainsKey(PrimaryKeyField);
}
/// <summary>
/// If the object passed in has a property with the same name as your PrimaryKeyField
/// it is returned here.
/// </summary>
- public virtual object GetPrimaryKey(object o)
- {
+ public virtual object GetPrimaryKey(object o) {
object result = null;
o.ToDictionary().TryGetValue(PrimaryKeyField, out result);
return result;
}
public virtual string TableName { get; set; }
/// <summary>
- /// Creates a command for use with transactions - internal stuff mostly, but here for you to play with
+ /// Returns all records complying with the passed-in WHERE clause and arguments,
+ /// ordered as specified, limited (TOP) by limit.
/// </summary>
- public virtual DbCommand CreateInsertCommand(object o)
- {
+ public virtual IEnumerable<dynamic> All(string where = "", string orderBy = "", int limit = 0, string columns = "*", params object[] args) {
+ string sql = BuildSelect(where, orderBy, limit);
+ return Query(string.Format(sql, columns, TableName), args);
+ }
+ private static string BuildSelect(string where, string orderBy, int limit) {
+ string sql = "SELECT {0} FROM {1} ";
+ if (!string.IsNullOrEmpty(where))
+ sql += where.Trim().StartsWith("where", StringComparison.OrdinalIgnoreCase) ? where : "WHERE " + where;
+ if (limit > 0) sql += " AND ROWNUM <=" + limit;
+ if (!String.IsNullOrEmpty(orderBy))
+ sql += orderBy.Trim().StartsWith("order by", StringComparison.OrdinalIgnoreCase) ? orderBy : " ORDER BY " + orderBy;
+ return sql;
+ }
+
+ /// <summary>
+ /// Returns a dynamic PagedResult. Result properties are Items, TotalPages, and TotalRecords.
+ /// </summary>
+ public virtual dynamic Paged(string where = "", string orderBy = "", string columns = "*", int pageSize = 20, int currentPage = 1, params object[] args) {
+ dynamic result = new ExpandoObject();
+ var countSQL = string.Format("SELECT COUNT({0}) FROM {1} ", PrimaryKeyField, TableName);
+ if (String.IsNullOrEmpty(orderBy))
+ orderBy = PrimaryKeyField;
+
+ if (!string.IsNullOrEmpty(where)) {
+ if (!where.Trim().StartsWith("where", StringComparison.OrdinalIgnoreCase)) {
+ where = "WHERE " + where;
+ }
+ }
+ var sql = string.Format("SELECT {0} FROM (SELECT ROW_NUMBER() OVER (ORDER BY {2}) AS Row, {0} FROM {3} {4}) AS Paged ", columns, pageSize, orderBy, TableName, where);
+ var pageStart = (currentPage - 1) * pageSize;
+ sql += string.Format(" WHERE Row > {0} AND Row <={1}", pageStart, (pageStart + pageSize));
+ countSQL += where;
+ result.TotalRecords = Scalar(countSQL, args);
+ result.TotalPages = result.TotalRecords / pageSize;
+ if (result.TotalRecords % pageSize > 0)
+ result.TotalPages += 1;
+ result.Items = Query(string.Format(sql, columns, TableName), args);
+ return result;
+ }
+ /// <summary>
+ /// Returns a single row from the database
+ /// </summary>
+ public virtual dynamic Single(string where, params object[] args) {
+ var sql = string.Format("SELECT * FROM {0} WHERE {1}", TableName, where);
+ return Query(sql, args).FirstOrDefault();
+ }
+ /// <summary>
+ /// Returns a single row from the database
+ /// </summary>
+ public virtual dynamic Single(object key, string columns = "*") {
+ var sql = string.Format("SELECT {0} FROM {1} WHERE {2} = :0", columns, TableName, PrimaryKeyField);
+ return Query(sql, key).FirstOrDefault();
+ }
+ /// <summary>
+ /// This will return a string/object dictionary for dropdowns etc
+ /// </summary>
+ public virtual IDictionary<string, object> KeyValues(string orderBy = "") {
+ if (String.IsNullOrEmpty(DescriptorField))
+ throw new InvalidOperationException("There's no DescriptorField set - do this in your constructor to describe the text value you want to see");
+ var sql = string.Format("SELECT {0},{1} FROM {2} ", PrimaryKeyField, DescriptorField, TableName);
+ if (!String.IsNullOrEmpty(orderBy))
+ sql += "ORDER BY " + orderBy;
+ return (IDictionary<string, object>)Query(sql);
+ }
+
+ /// <summary>
+ /// This will return an Expando as a Dictionary
+ /// </summary>
+ public virtual IDictionary<string, object> ItemAsDictionary(ExpandoObject item) {
+ return (IDictionary<string, object>)item;
+ }
+ //Checks to see if a key is present based on the passed-in value
+ public virtual bool ItemContainsKey(string key, ExpandoObject item) {
+ var dc = ItemAsDictionary(item);
+ return dc.ContainsKey(key);
+ }
+ /// <summary>
+ /// Executes a set of objects as Insert or Update commands based on their property settings, within a transaction.
+ /// These objects can be POCOs, Anonymous, NameValueCollections, or Expandos. Objects
+ /// With a PK property (whatever PrimaryKeyField is set to) will be created at UPDATEs
+ /// </summary>
+ public virtual int Save(params object[] things) {
+ foreach (var item in things) {
+ if (!IsValid(item)) {
+ throw new InvalidOperationException("Can't save this item: " + String.Join("; ", Errors.ToArray()));
+ }
+ }
+ var commands = BuildCommands(things);
+ return Execute(commands);
+ }
+ public virtual DbCommand CreateInsertCommand(dynamic expando) {
DbCommand result = null;
- var expando = o.ToExpando();
var settings = (IDictionary<string, object>)expando;
var sbKeys = new StringBuilder();
var sbVals = new StringBuilder();
var stub = "INSERT INTO {0} ({1}) \r\n VALUES ({2})";
result = CreateCommand(stub, null);
int counter = 0;
- foreach (var item in settings)
- {
+ foreach (var item in settings) {
sbKeys.AppendFormat("{0},", item.Key);
- sbVals.AppendFormat("{0}{1},", _prefix, counter.ToString());
+ sbVals.AppendFormat(":{0},", counter.ToString());
result.AddParam(item.Value);
counter++;
}
- if (counter > 0)
- {
+ if (counter > 0) {
var keys = sbKeys.ToString().Substring(0, sbKeys.Length - 1);
var vals = sbVals.ToString().Substring(0, sbVals.Length - 1);
var sql = string.Format(stub, TableName, keys, vals);
result.CommandText = sql;
- }
- else throw new InvalidOperationException("Can't parse this object to the database - there are no properties set");
+ } else throw new InvalidOperationException("Can't parse this object to the database - there are no properties set");
return result;
}
/// <summary>
/// Creates a command for use with transactions - internal stuff mostly, but here for you to play with
/// </summary>
- public virtual DbCommand CreateUpdateCommand(object o, object key)
- {
- var expando = o.ToExpando();
+ public virtual DbCommand CreateUpdateCommand(dynamic expando, object key) {
var settings = (IDictionary<string, object>)expando;
var sbKeys = new StringBuilder();
var stub = "UPDATE {0} SET {1} WHERE {2} = :{3}";
var args = new List<object>();
var result = CreateCommand(stub, null);
int counter = 0;
- foreach (var item in settings)
- {
+ foreach (var item in settings) {
var val = item.Value;
- if (!item.Key.Equals(PrimaryKeyField, StringComparison.CurrentCultureIgnoreCase) && item.Value != null)
- {
+ if (!item.Key.Equals(PrimaryKeyField, StringComparison.OrdinalIgnoreCase) && item.Value != null) {
result.AddParam(val);
- sbKeys.AppendFormat("{0} = {1}, \r\n", item.Key, counter.ToString());
+ sbKeys.AppendFormat("{0} = :{1}, \r\n", item.Key, counter.ToString());
counter++;
}
}
- if (counter > 0)
- {
+ if (counter > 0) {
//add the key
result.AddParam(key);
//strip the last commas
var keys = sbKeys.ToString().Substring(0, sbKeys.Length - 4);
result.CommandText = string.Format(stub, TableName, keys, PrimaryKeyField, counter);
- }
- else throw new InvalidOperationException("No parsable object was sent in - could not divine any name/value pairs");
+ } else throw new InvalidOperationException("No parsable object was sent in - could not divine any name/value pairs");
return result;
}
/// <summary>
/// Removes one or more records from the DB according to the passed-in WHERE
/// </summary>
- public virtual DbCommand CreateDeleteCommand(string where = "", object key = null, params object[] args)
- {
+ public virtual DbCommand CreateDeleteCommand(string where = "", object key = null, params object[] args) {
var sql = string.Format("DELETE FROM {0} ", TableName);
- if (key != null)
- {
- sql += string.Format("WHERE {0}=0", PrimaryKeyField);
+ if (key != null) {
+ sql += string.Format("WHERE {0}=:0", PrimaryKeyField);
args = new object[] { key };
- }
- else if (!string.IsNullOrEmpty(where))
- {
- sql += where.Trim().StartsWith("where", StringComparison.CurrentCultureIgnoreCase) ? where : "WHERE " + where;
+ } else if (!string.IsNullOrEmpty(where)) {
+ sql += where.Trim().StartsWith("where", StringComparison.OrdinalIgnoreCase) ? where : "WHERE " + where;
}
return CreateCommand(sql, null, args);
}
+
+ public bool IsValid(dynamic item) {
+ Errors.Clear();
+ Validate(item);
+ return Errors.Count == 0;
+ }
+
+ //Temporary holder for error messages
+ public IList<string> Errors = new List<string>();
/// <summary>
/// Adds a record to the database. You can pass in an Anonymous object, an ExpandoObject,
/// A regular old POCO, or a NameValueColletion from a Request.Form or Request.QueryString
/// </summary>
- public virtual object Insert(object o)
- {
- dynamic result = 0;
- using (var conn = OpenConnection())
- {
- var cmd = CreateInsertCommand(o);
- cmd.Connection = conn;
- cmd.ExecuteNonQuery();
- if (_sequence != "")
- {
- cmd.CommandText = "SELECT " + _sequence + ".NEXTVAL as newID FROM DUAL";
- result = cmd.ExecuteScalar();
+ public virtual dynamic Insert(object o) {
+ var ex = o.ToExpando();
+ if (!IsValid(ex)) {
+ throw new InvalidOperationException("Can't insert: " + String.Join("; ", Errors.ToArray()));
+ }
+ if (BeforeSave(ex)) {
+ using (dynamic conn = OpenConnection()) {
+ var cmd = CreateInsertCommand(ex);
+ cmd.Connection = conn;
+ cmd.ExecuteNonQuery();
+ if (_sequence != "")
+ {
+ cmd.CommandText = "SELECT " + _sequence + ".NEXTVAL as newID FROM DUAL";
+ ex.ID = cmd.ExecuteScalar();
+ }
+ Inserted(ex);
}
+ return ex;
+ } else {
+ return null;
}
- return result;
}
/// <summary>
/// Updates a record in the database. You can pass in an Anonymous object, an ExpandoObject,
/// A regular old POCO, or a NameValueCollection from a Request.Form or Request.QueryString
/// </summary>
- public virtual int Update(object o, object key)
- {
- return Execute(CreateUpdateCommand(o, key));
+ public virtual int Update(object o, object key) {
+ var ex = o.ToExpando();
+ if (!IsValid(ex)) {
+ throw new InvalidOperationException("Can't Update: " + String.Join("; ", Errors.ToArray()));
+ }
+ var result = 0;
+ if (BeforeSave(ex)) {
+ result = Execute(CreateUpdateCommand(ex, key));
+ Updated(ex);
+ }
+ return result;
}
/// <summary>
/// Removes one or more records from the DB according to the passed-in WHERE
/// </summary>
- public int Delete(object key = null, string where = "", params object[] args)
- {
- return Execute(CreateDeleteCommand(where: where, key: key, args: args));
+ public int Delete(object key = null, string where = "", params object[] args) {
+ var deleted = this.Single(key);
+ var result = 0;
+ if (BeforeDelete(deleted)) {
+ result = Execute(CreateDeleteCommand(where: where, key: key, args: args));
+ Deleted(deleted);
+ }
+ return result;
}
- /// <summary>
- /// Returns all records complying with the passed-in WHERE clause and arguments,
- /// ordered as specified, limited (TOP) by limit.
- /// </summary>
- public virtual IEnumerable<dynamic> All(string where = "", string orderBy = "", int limit = 0, string columns = "*", params object[] args)
- {
- string sql = "SELECT {0} FROM {1} ";
- if (!string.IsNullOrEmpty(where))
- sql += where.Trim().StartsWith("where", StringComparison.CurrentCultureIgnoreCase) ? where : "WHERE " + where;
- if (limit > 0) sql += " AND ROWNUM <=" + limit;
- if (!String.IsNullOrEmpty(orderBy))
- sql += orderBy.Trim().StartsWith("order by", StringComparison.CurrentCultureIgnoreCase) ? orderBy : " ORDER BY " + orderBy;
- return Query(string.Format(sql, columns, TableName), args);
+
+ public void DefaultTo(string key, object value, dynamic item) {
+ if (!ItemContainsKey(key, item)) {
+ var dc = (IDictionary<string, object>)item;
+ dc[key] = value;
+ }
}
- /// <summary>
- /// Returns a dynamic PagedResult. Result properties are Items, TotalPages, and TotalRecords.
- /// </summary>
- public virtual dynamic Paged(string where = "", string orderBy = "", string columns = "*", int pageSize = 20, int currentPage = 1, params object[] args)
- {
- dynamic result = new ExpandoObject();
- var countSQL = string.Format("SELECT COUNT({0}) FROM {1}", PrimaryKeyField, TableName);
- if (String.IsNullOrEmpty(orderBy))
- orderBy = PrimaryKeyField;
- if (!string.IsNullOrEmpty(where))
- if (!where.Trim().StartsWith("where", StringComparison.CurrentCultureIgnoreCase))
- {
- where = "WHERE " + where;
- }
- var sql = string.Format("SELECT {0} FROM (SELECT ROW_NUMBER() OVER (ORDER BY {2}) AS Row, {0} FROM {3} {4}) AS Paged ", columns, pageSize, orderBy, TableName, where);
- var pageStart = (currentPage - 1) * pageSize;
- sql += string.Format(" WHERE Row > {0} AND Row <={1}", pageStart, (pageStart + pageSize));
- countSQL += where;
- result.TotalRecords = Scalar(countSQL, args);
- result.TotalPages = result.TotalRecords / pageSize;
- if (result.TotalRecords % pageSize > 0)
- result.TotalPages += 1;
- result.Items = Query(string.Format(sql, columns, TableName), args);
- return result;
+ //Hooks
+ public virtual void Validate(dynamic item) { }
+ public virtual void Inserted(dynamic item) { }
+ public virtual void Updated(dynamic item) { }
+ public virtual void Deleted(dynamic item) { }
+ public virtual bool BeforeDelete(dynamic item) { return true; }
+ public virtual bool BeforeSave(dynamic item) { return true; }
+
+ //validation methods
+ public virtual void ValidatesPresenceOf(object value, string message = "Required") {
+ if (value == null)
+ Errors.Add(message);
+ if (String.IsNullOrEmpty(value.ToString()))
+ Errors.Add(message);
+ }
+ //fun methods
+ public virtual void ValidatesNumericalityOf(object value, string message = "Should be a number") {
+ var type = value.GetType().Name;
+ var numerics = new string[] { "Int32", "Int16", "Int64", "Decimal", "Double", "Single", "Float" };
+ if (!numerics.Contains(type)) {
+ Errors.Add(message);
+ }
+ }
+ public virtual void ValidateIsCurrency(object value, string message = "Should be money") {
+ if (value == null)
+ Errors.Add(message);
+ decimal val = decimal.MinValue;
+ decimal.TryParse(value.ToString(), out val);
+ if (val == decimal.MinValue)
+ Errors.Add(message);
+
+
}
+ public int Count() {
+ return Count(TableName);
+ }
+ public int Count(string tableName, string where="") {
+ return (int)Scalar("SELECT COUNT(*) FROM " + tableName+" "+where);
+ }
+
/// <summary>
- /// Returns a single row from the database
+ /// A helpful query tool
/// </summary>
- public virtual dynamic Single(object key, string columns = "*")
- {
- var sql = string.Format("SELECT {0} FROM {1} WHERE {2} = :0", columns, TableName, PrimaryKeyField);
- var items = Query(sql, key).ToList();
- return items.FirstOrDefault();
+ public override bool TryInvokeMember(InvokeMemberBinder binder, object[] args, out object result) {
+ //parse the method
+ var constraints = new List<string>();
+ var counter = 0;
+ var info = binder.CallInfo;
+ // accepting named args only... SKEET!
+ if (info.ArgumentNames.Count != args.Length) {
+ throw new InvalidOperationException("Please use named arguments for this type of query - the column name, orderby, columns, etc");
+ }
+ //first should be "FindBy, Last, Single, First"
+ var op = binder.Name;
+ var columns = " * ";
+ string orderBy = string.Format(" ORDER BY {0}", PrimaryKeyField);
+ string sql = "";
+ string where = "";
+ var whereArgs = new List<object>();
+
+ //loop the named args - see if we have order, columns and constraints
+ if (info.ArgumentNames.Count > 0) {
+
+ for (int i = 0; i < args.Length; i++) {
+ var name = info.ArgumentNames[i].ToLower();
+ switch (name) {
+ case "orderby":
+ orderBy = " ORDER BY " + args[i];
+ break;
+ case "columns":
+ columns = args[i].ToString();
+ break;
+ default:
+ constraints.Add(string.Format(" {0} = :{1}", name, counter));
+ whereArgs.Add(args[i]);
+ counter++;
+ break;
+ }
+ }
+ }
+
+ //Build the WHERE bits
+ if (constraints.Count > 0) {
+ where = " WHERE " + string.Join(" AND ", constraints.ToArray());
+ }
+ //probably a bit much here but... yeah this whole thing needs to be refactored...
+ if (op.ToLower() == "count") {
+ result = Scalar("SELECT COUNT(*) FROM " + TableName + where, whereArgs.ToArray());
+ } else if (op.ToLower() == "sum") {
+ result = Scalar("SELECT SUM(" + columns + ") FROM " + TableName + where, whereArgs.ToArray());
+ } else if (op.ToLower() == "max") {
+ result = Scalar("SELECT MAX(" + columns + ") FROM " + TableName + where, whereArgs.ToArray());
+ } else if (op.ToLower() == "min") {
+ result = Scalar("SELECT MIN(" + columns + ") FROM " + TableName + where, whereArgs.ToArray());
+ } else if (op.ToLower() == "avg") {
+ result = Scalar("SELECT AVG(" + columns + ") FROM " + TableName + where, whereArgs.ToArray());
+ } else {
+
+ //build the SQL
+ var justOne = op.StartsWith("First") || op.StartsWith("Last") || op.StartsWith("Get") || op.StartsWith("Single");
+
+ //Be sure to sort by DESC on the PK (PK Sort is the default)
+ if (op.StartsWith("Last")) {
+ sql = "SELECT " + columns + " FROM " + TableName + where + (string.IsNullOrEmpty(where) ? "" : " AND ") + " ROWNUM=1 ";
+ orderBy = orderBy + " DESC ";
+ } else {
+ //default to multiple
+ sql = "SELECT " + columns + " FROM " + TableName + where;
+ }
+
+ if (justOne) {
+ //return a single record
+ result = Query(sql + orderBy, whereArgs.ToArray()).FirstOrDefault();
+ } else {
+ //return lots
+ result = Query(sql + orderBy, whereArgs.ToArray());
+ }
+ }
+ return true;
}
}
}
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