354 lines
13 KiB
C#
354 lines
13 KiB
C#
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using System;
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using System.Reflection;
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using System.Collections;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using Ease.Core.Model;
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using Ease.Core.Utility;
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using System.ComponentModel.DataAnnotations.Schema;
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namespace Ease.Core.Model
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{
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#region Framwwork: Business Object
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#region Framwwork: Event delegate
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public delegate void ObjectIDChanged(long newID);
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#endregion
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public abstract class ObjectTemplate
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{
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private int _sortOrder;
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protected ObjectState _objectState;
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protected int _id = int.MinValue;
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//private Dictionary<string, string> _auditTrail;
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//The event handler need to be non serialized
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//public event ObjectIDChanged IDChanged;
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public ObjectTemplate()
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{
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_objectState = ObjectState.New;
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}
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/// <summary>
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/// ID of the object
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/// </summary>
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public int ID
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{
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get { return _id; }
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set { _id = value; }
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}
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/// <summary>
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/// State of the object IsNew/Not
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/// </summary>
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//public bool IsNew
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//{
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// get { return _objectState == ObjectState.New; }
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//}
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public bool IsNew
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{
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get { return _id <= 0; }
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}
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/// <summary>
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/// State of the object IsModified/Not
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/// </summary>
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//public bool IsModified
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//{
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// get { return _objectState == ObjectState.Modified; }
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//}
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/// <summary>
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/// State of the object IsSaved/Not
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/// </summary>
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//public bool IsSaved
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//{
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// get { return _objectState == ObjectState.Saved; }
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//}
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//public bool IsUnassigned
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//{
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// get { return _id == long.MinValue; }
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//}
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[NotMapped]
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public int SortOrder
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{
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get { return _sortOrder; }
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set { _sortOrder = value; }
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}
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/// <summary>
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/// Set modified state of the object
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/// </summary>
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protected void SetObjectStateModified()
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{
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if (_objectState == ObjectState.Saved)
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_objectState = ObjectState.Modified;
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}
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/// <summary>
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/// Set ID of the object
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/// </summary>
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/// <param name="id">A valid ID for the object.</param>
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public void SetID(int id)
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{
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_id = id;
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//if (IDChanged != null)
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// IDChanged(_id);
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}
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/// <summary>
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/// Set state of the object
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/// </summary>
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/// <param name="state">A valid state.</param>
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protected internal void SetState(ObjectState state)
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{
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_objectState = state;
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}
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protected virtual internal void SetReadOnlyProperties(params object[] propertyValues)
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{
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}
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public override string ToString()
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{
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return GetType().Name + " (" + _id.ToString() + ")";
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}
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public override bool Equals(object obj)
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{
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if (obj == null || (obj.GetType() != this.GetType()))
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return false;
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return _id.Equals((obj as ObjectTemplate)._id);
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}
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public override int GetHashCode()
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{
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if ((object)_id == null)
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return base.GetHashCode();
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else
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return _id.GetHashCode();
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}
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public static bool operator ==(ObjectTemplate template1, ObjectTemplate template2)
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{
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if ((object)template1 != null)
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return template1.Equals(template2);
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else
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return ((object)template2 == null);
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}
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public static bool operator !=(ObjectTemplate template1, ObjectTemplate template2)
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{
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if ((object)template1 != null)
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return !template1.Equals(template2);
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else
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return !((object)template2 == null);
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}
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/// <summary>
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/// Make clone of the current instance rather reference
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/// </summary>
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/// <returns>Return another instance of current instance rather reference.</returns>
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protected ObjectTemplate Clone()
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{
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return this.CopyObject();
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}
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/// <summary>
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/// Create string value from current instance.
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/// </summary>
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/// <param name="key">For further reconstruct.</param>
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/// <param name="delimiter">Delimiter for each property for current instance.</param>
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/// <param name="properties">Name of the property(ies) by which string will consturct.</param>
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/// <returns>Return delimited string.</returns>
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protected virtual string LineData(int key, string delimiter, params string[] properties)
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{
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if (delimiter.IndexOf('|') >= 0)
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throw new Exception("Invalid use of separator: '|'. User separator other than '|'.");
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string line = string.Format("{0}", key);
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PropertyInfo[] pis = this.GetType()
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.GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
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foreach (string property in properties)
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{
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foreach (PropertyInfo pi in pis)
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{
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if (pi.Name.ToLower().Equals(property.ToLower()))
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{
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string value = string.Empty;
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object val = pi.GetValue(this, null);
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if (val != null)
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{
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if (pi.PropertyType.IsEnum)
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value = Convert.ToInt32(val).ToString("0");
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else if (pi.PropertyType == typeof(long))
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value = Convert.ToInt32(val).ToString("0");
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else if (pi.PropertyType == typeof(int))
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value = Convert.ToInt32(val).ToString("0");
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else if (pi.PropertyType == typeof(double))
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value = Convert.ToDouble(val).ToString("0.0000");
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else if (pi.PropertyType == typeof(DateTime))
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value = Convert.ToDateTime(val).ToString("MM/dd/yyyy");
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else if (pi.PropertyType == typeof(bool))
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value = Convert.ToBoolean(val) ? "1" : "0";
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else
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{
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value = val.ToString();
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value = value.Replace(Environment.NewLine, "*^*");
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}
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}
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line = string.Format("{0}{1}{2}", line, delimiter, value);
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break;
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}
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}
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}
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return line;
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}
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/// <summary>
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/// Create an instatnce of BaseType.
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/// </summary>
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/// <param name="baseType">Type of object to create an instance.</param>
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/// <param name="delimiter">Delimiter in the string to separate each property.</param>
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/// <param name="objString">Delimited string to create object.</param>
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/// <param name="properties">Set property(ies) of object.</param>
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/// <returns>Return an instance of basetype.</returns>
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protected ObjectTemplate CreateObjectFromString(Type baseType, string delimiter, string objString,
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params string[] properties)
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{
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if (delimiter.IndexOf('|') >= 0)
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throw new Exception("Invalid use of separator: '|'. User separator other than '|'.");
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ObjectTemplate ot =
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(ObjectTemplate)ObjectUtility.CreateInstance(baseType.FullName, new object[] { }, baseType);
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PropertyInfo[] props = baseType.GetProperties(BindingFlags.Public | BindingFlags.Instance);
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int index = objString.IndexOf(delimiter);
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if (index != -1)
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objString = objString.Substring(index + 1);
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string[] values = objString.Split(delimiter.ToCharArray());
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index = -1;
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if (values.Length != properties.Length)
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throw new Exception("No of properties and values are not same");
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foreach (string property in properties)
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{
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index++;
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foreach (PropertyInfo prop in props)
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{
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if (prop.Name.ToLower().Equals(property.ToLower()))
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{
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object value = values[index];
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if (prop.PropertyType.IsEnum)
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prop.SetValue(ot, Enum.Parse(prop.PropertyType, value.ToString(), true), null);
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else if (prop.PropertyType.Equals(typeof(bool)))
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prop.SetValue(ot, Convert.ToBoolean(Convert.ToInt32(value)), null);
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else if (prop.PropertyType.Equals(typeof(DateTime)))
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prop.SetValue(ot, Convert.ToDateTime(value), null);
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else if (prop.PropertyType.Equals(typeof(double)))
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prop.SetValue(ot, Convert.ToDouble(value), null);
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else if (prop.PropertyType.Equals(typeof(decimal)))
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prop.SetValue(ot, Convert.ToDecimal(value), null);
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else if (prop.PropertyType.Equals(typeof(Int16)))
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prop.SetValue(ot, Convert.ToInt16(value), null);
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else if (prop.PropertyType.Equals(typeof(Int32)))
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prop.SetValue(ot, Convert.ToInt32(value), null);
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else if (prop.PropertyType.Equals(typeof(Int64)))
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prop.SetValue(ot, Convert.ToInt64(value), null);
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else if (prop.PropertyType.Equals(typeof(byte)))
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prop.SetValue(ot, Convert.ToByte(value), null);
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else
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{
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value = value.ToString().Replace("*^*", Environment.NewLine);
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prop.SetValue(ot, value, null);
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}
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break;
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}
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}
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}
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return ot;
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}
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internal ObjectTemplate CopyObject()
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{
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ObjectTemplate cot =
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Ease.Core.Utility.ObjectUtility.CreateInstance(this.GetType().FullName, new object[] { },
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this.GetType()) as ObjectTemplate;
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foreach (FieldInfo fi in this.GetType()
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.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance))
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fi.SetValue(cot, fi.GetValue(this));
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return cot;
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}
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/// <summary>
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/// Keep Track whether value of property has been changed or not
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/// and property value cannot be null.
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/// </summary>
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/// <typeparam name="T">Type of property i.e string/int/DateTime e.t.c.</typeparam>
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/// <param name="propertyName">Name of the property i.e "Description".</param>
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/// <param name="currentValue">Existing value of the property i.e "Computer Ease Ltd"</param>
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/// <param name="newValue">New value of the property i.e. "CEL"</param>
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//protected void OnPropertyChange<T>(string propertyName, T currentValue, T newValue)
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// where T : IEquatable<T>
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//{
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// if ((newValue != null && !newValue.Equals(currentValue)) || (newValue == null && currentValue != null))
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// {
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// if (_objectState != ObjectState.New)
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// {
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// if (_auditTrail == null)
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// _auditTrail = new Dictionary<string, string>();
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// _auditTrail[propertyName] = string.Format("{0} => {1}", currentValue, newValue);
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// _objectState = ObjectState.Modified;
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// }
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// }
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//}
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/// <summary>
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/// Keep Track whether value of property has been changed or not
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/// and property value may be null.
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/// </summary>
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/// <typeparam name="T">Type of property i.e string/int/DateTime e.t.c.</typeparam>
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/// <param name="propertyName">Name of the property i.e "Description".</param>
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/// <param name="currentValue">Existing value of the property i.e "Computer Ease Ltd"</param>
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/// <param name="newValue">New value of the property i.e. "CEL"</param>
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//protected void OnPropertyChange<T>(string propertyName, Nullable<T> currentValue, Nullable<T> newValue)
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// where T : struct
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//{
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// if ((newValue != null && !newValue.Equals(currentValue)) || (newValue == null && currentValue != null))
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// {
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// if (_objectState != ObjectState.New)
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// {
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// if (_auditTrail == null)
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// _auditTrail = new Dictionary<string, string>();
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// _auditTrail[propertyName] = string.Format("{0} => {1}", currentValue, newValue);
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// _objectState = ObjectState.Modified;
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// }
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// }
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//}
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}
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#endregion
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}
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