C# (CSharp) NHibernate.Hql.Ast HqlTreeBuilder.IsNull示例

IsNull() public method

public IsNull ( HqlExpression lhs ) : HqlIsNull
lhs	HqlExpression
return	HqlIsNull

示例#1

文件： CommonConceptsNHibernateConfigurationExtension.cs 项目： kmeze/Rhetos

 public override HqlTreeNode BuildHql(MethodInfo method, Expression targetObject,
     ReadOnlyCollection<Expression> arguments, HqlTreeBuilder treeBuilder, IHqlExpressionVisitor visitor)
 {
     var constantParameter = arguments[1] as ConstantExpression;
     if (constantParameter != null && constantParameter.Value == null)
         return treeBuilder.IsNull(visitor.Visit(arguments[0]).AsExpression());
     else
         return treeBuilder.Equality(
             visitor.Visit(arguments[0]).AsExpression(),
             visitor.Visit(arguments[1]).AsExpression());
 }

示例#2

文件： IsNullGenerator.cs 项目： hazzik/nh-contrib-everything

 public override HqlTreeNode BuildHql(MethodInfo method, Expression targetObject, ReadOnlyCollection<Expression> arguments, HqlTreeBuilder treeBuilder, IHqlExpressionVisitor visitor)
 {
     var isNull = treeBuilder.IsNull(visitor.Visit(arguments[0]).AsExpression());
     return isNull;
 }