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1 using System;
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2 using System.Reflection;
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3
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4 namespace BLToolkit.Data.Linq
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5 {
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6 using Data.Sql;
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7 using Reflection;
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8
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9 [SerializableAttribute]
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10 [AttributeUsageAttribute(AttributeTargets.Property | AttributeTargets.Method, AllowMultiple = true, Inherited = false)]
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11 public class SqlExpressionAttribute : SqlFunctionAttribute
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12 {
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13 public SqlExpressionAttribute(string expression)
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14 : base(expression)
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15 {
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16 Precedence = Data.Sql.Precedence.Primary;
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17 }
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18
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19 public SqlExpressionAttribute(string expression, params int[] argIndices)
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20 : base(expression, argIndices)
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21 {
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22 Precedence = Data.Sql.Precedence.Primary;
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23 }
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24
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25 public SqlExpressionAttribute(string sqlProvider, string expression)
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26 : base(sqlProvider, expression)
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27 {
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28 Precedence = Data.Sql.Precedence.Primary;
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29 }
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30
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31 public SqlExpressionAttribute(string sqlProvider, string expression, params int[] argIndices)
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32 : base(sqlProvider, expression, argIndices)
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33 {
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34 Precedence = Data.Sql.Precedence.Primary;
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35 }
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36
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37 protected new string Name
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38 {
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39 get { return base.Name; }
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40 }
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41
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42 public string Expression
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43 {
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44 get { return base.Name; }
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45 set { base.Name = value; }
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46 }
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47
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48 public int Precedence { get; set; }
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49
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50 public override ISqlExpression GetExpression(MemberInfo member, params ISqlExpression[] args)
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51 {
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52 return new SqlExpression(TypeHelper.GetMemberType(member), Expression ?? member.Name, Precedence, ConvertArgs(member, args));
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53 }
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54 }
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55 }
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