DeclareVariableStatement.cs

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using System;

using Deveel.Data.Sql.Expressions;
using Deveel.Data.Sql.Variables;
using Deveel.Data.Types;

namespace Deveel.Data.Sql.Statements {
    public sealed class DeclareVariableStatement : SqlStatement, IPreparable {
        public DeclareVariableStatement(string variableName, SqlType variableType) {
            if (String.IsNullOrEmpty(variableName))
                throw new ArgumentNullException("variableName");
            if (variableType == null)
                throw new ArgumentNullException("variableType");

            VariableName = variableName;
            VariableType = variableType;
        }

        public string VariableName { get; private set; }

        public SqlType VariableType { get; private set; }

        public bool IsConstant { get; set; }

        public SqlExpression DefaultExpression { get; set; }

        public bool IsNotNull { get; set; }

        object IPreparable.Prepare(IExpressionPreparer preparer) {
            var statement = new DeclareVariableStatement(VariableName, VariableType);
            if (DefaultExpression != null)
                statement.DefaultExpression = DefaultExpression.Prepare(preparer);

            statement.IsConstant = IsConstant;
            return statement;
        }

        protected override void ExecuteStatement(ExecutionContext context) {
            throw new NotImplementedException();
        }
    }
}