|
public Equality ( |
||
| lhs | ||
| rhs | ||
| Résultat | ||
public override HqlTreeNode BuildHql(
MethodInfo method,
Expression targetObject,
ReadOnlyCollection<Expression> arguments,
HqlTreeBuilder treeBuilder,
IHqlExpressionVisitor visitor)
{
// Get the StringComparison argument.
var comparison = (StringComparison)(arguments[1].As<ConstantExpression>().Value);
if (comparison == StringComparison.CurrentCultureIgnoreCase
|| comparison == StringComparison.InvariantCultureIgnoreCase
|| comparison == StringComparison.OrdinalIgnoreCase)
{
// If the comparison calls for us to ignore the case, use SQL LOWER()
return
treeBuilder.Equality(
treeBuilder.MethodCall("lower", new[] { visitor.Visit(targetObject).AsExpression() }),
treeBuilder.MethodCall("lower", new[] { visitor.Visit(arguments[0]).AsExpression() }));
}
// Otherwise use the database's default string comparison mechanism.
return treeBuilder.Equality(
visitor.Visit(targetObject).AsExpression(),
visitor.Visit(arguments[0]).AsExpression());
}
public override HqlTreeNode BuildHql(MethodInfo method, Expression targetObject, ReadOnlyCollection<Expression> arguments, HqlTreeBuilder treeBuilder, IHqlExpressionVisitor visitor)
{
var comparison = (StringComparison)(arguments[1].As<ConstantExpression>().Value);
if (comparison == StringComparison.CurrentCultureIgnoreCase ||
comparison == StringComparison.InvariantCultureIgnoreCase ||
comparison == StringComparison.OrdinalIgnoreCase)
{
return treeBuilder.Equality(
treeBuilder.MethodCall("lower", new[] { visitor.Visit(targetObject).AsExpression() }),
treeBuilder.MethodCall("lower", new[] { visitor.Visit(arguments[0]).AsExpression() }));
}
return treeBuilder.Equality(
visitor.Visit(targetObject).AsExpression(),
visitor.Visit(arguments[0]).AsExpression());
}
public override HqlTreeNode BuildHql(MethodInfo method, Expression targetObject, ReadOnlyCollection<Expression> arguments, HqlTreeBuilder treeBuilder, IHqlExpressionVisitor visitor)
{
HqlExpression targetExpression = visitor.Visit(targetObject).AsExpression();
HqlExpression argument0Expression = visitor.Visit(arguments[0]).AsExpression();
HqlEquality result = treeBuilder.Equality(targetExpression, argument0Expression);
return result;
}
public override HqlTreeNode BuildHql(MethodInfo method, Expression targetObject,
ReadOnlyCollection<Expression> arguments, HqlTreeBuilder treeBuilder, IHqlExpressionVisitor visitor)
{
return treeBuilder.Equality(
visitor.Visit(targetObject).AsExpression(),
visitor.Visit(arguments[0]).AsExpression());
}
public override HqlTreeNode BuildHql(MethodInfo method, Expression targetObject, ReadOnlyCollection<Expression> arguments, HqlTreeBuilder treeBuilder, IHqlExpressionVisitor visitor)
{
// HqlGeneratorExpressionTreeVisitor.VisitConstantExpression will always return an HqlEquality
// instead of HqlParameter for argument that is of type bool.
// Use the HqlParameter that exists as first children to the HqlEquality as second argument into treeBuilder.Equality
return treeBuilder.Equality(
visitor.Visit(targetObject).AsExpression(),
visitor.Visit(arguments[0]).Children.First().AsExpression());
}
public override HqlTreeNode BuildHql(MethodInfo method, Expression targetObject, ReadOnlyCollection<Expression> arguments, HqlTreeBuilder treeBuilder, IHqlExpressionVisitor visitor)
{
Expression lhs = arguments.Count == 1 ? targetObject : arguments[0];
Expression rhs = arguments.Count == 1 ? arguments[0] : arguments[1];
return treeBuilder.Equality(
visitor.Visit(lhs).AsExpression(),
visitor.Visit(rhs).AsExpression());
}
public override HqlTreeNode BuildHql(
MethodInfo method,
Expression targetObject,
ReadOnlyCollection<Expression> arguments,
HqlTreeBuilder treeBuilder,
IHqlExpressionVisitor visitor)
{
var left = treeBuilder.Cast(visitor.Visit(targetObject).AsExpression(), typeof(string));
var right = treeBuilder.Cast(visitor.Visit(arguments.First()).AsExpression(), typeof(string));
var leftSubstring = treeBuilder.MethodCall("substring", left, treeBuilder.Constant(4));
var rightSubstring = treeBuilder.MethodCall("substring", right, treeBuilder.Constant(4));
var equals = treeBuilder.Equality(leftSubstring, rightSubstring);
return equals;
}
public static HqlBooleanExpression ToBooleanExpression(this HqlTreeNode node)
{
var hqlDot = node as HqlDot;
if (hqlDot != null)
{
return(new HqlBooleanDot(hqlDot.Factory, hqlDot));
}
var hqlBooleanExpression = node as HqlBooleanExpression;
if (hqlBooleanExpression != null)
{
return(hqlBooleanExpression);
}
var builder = new HqlTreeBuilder();
return(builder.Equality(node.AsExpression(), builder.True()));
}
public override HqlTreeNode BuildHql(MethodInfo method, Expression targetObject, ReadOnlyCollection<Expression> arguments, HqlTreeBuilder treeBuilder, IHqlExpressionVisitor visitor)
{
// Instance CompareTo() or static string.Compare()?
Expression lhs = arguments.Count == 1 ? targetObject : arguments[0];
Expression rhs = arguments.Count == 1 ? arguments[0] : arguments[1];
HqlExpression lhs1 = visitor.Visit(lhs).AsExpression();
HqlExpression rhs1 = visitor.Visit(rhs).AsExpression();
HqlExpression lhs2 = visitor.Visit(lhs).AsExpression();
HqlExpression rhs2 = visitor.Visit(rhs).AsExpression();
// CASE WHEN (table.[Name] = N'Foo') THEN 0
// WHEN (table.[Name] > N'Foo') THEN 1
// ELSE -1 END
return treeBuilder.Case(
new[]
{
treeBuilder.When(treeBuilder.Equality(lhs1, rhs1), treeBuilder.Constant(0)),
treeBuilder.When(treeBuilder.GreaterThan(lhs2, rhs2), treeBuilder.Constant(1))
},
treeBuilder.Constant(-1));
}
///<summary>
///
///</summary>
///<param name="method"></param>
///<param name="targetObject">Should be an ISecurable</param>
///<param name="arguments">Not sure what the heck arg[0] is, but arg[1] is the entityName</param>
///<param name="treeBuilder"></param>
///<param name="visitor"></param>
///<returns></returns>
public override HqlTreeNode BuildHql(
MethodInfo method,
Expression targetObject,
ReadOnlyCollection<Expression> arguments,
HqlTreeBuilder treeBuilder,
IHqlExpressionVisitor visitor)
{
// arguments[0] is a System.Linq.Expressions.Expression
// arguments[1] is our constant value
var expr = arguments[0];
// This doesn't really help us right now, but log it just in case...
if (expr is Remotion.Linq.Clauses.Expressions.QuerySourceReferenceExpression)
{
Console.WriteLine(
"ReferencedQuerySource: {0}",
((Remotion.Linq.Clauses.Expressions.QuerySourceReferenceExpression)expr).ReferencedQuerySource
);
}
// Getting somewhere?
// expr.Type is Spc.Ofp.Tubs.DAL.Entities.Trip
Console.WriteLine("Expression type: {0}", expr.Type);
// HqlAlias is "AccessControl" (entity property), "ace" (name used in expression) ?
// HqlExpression is equality expression ?
var aceAlias = treeBuilder.Alias("AccessControl as ace");
var entityName = ((ConstantExpression)arguments[1]).Value;
Console.WriteLine("entityName: {0}", entityName);
var equality = treeBuilder.Equality(
treeBuilder.Alias("ace.EntityName"),
treeBuilder.Constant(entityName)
);
var joinExpression = treeBuilder.Join(equality, aceAlias);
// This doesn't actually do anything...
return visitor.Visit(expr).AsExpression();
/*
* var dc =
DetachedCriteria.For<T>()
.CreateAlias("AccessControl", "ace", JoinType.InnerJoin)
.Add(NHibernate.Criterion.Expression.Eq("ace.EntityName", this._entityName));
*/
}
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());
}
