public IntermediateHqlTree(bool root, QueryMode mode)
{
_isRoot = root;
TreeBuilder = new HqlTreeBuilder();
if (mode == QueryMode.Delete)
{
_root = TreeBuilder.Delete(TreeBuilder.From());
}
else if (mode == QueryMode.Update)
{
_root = TreeBuilder.Update(TreeBuilder.From(), TreeBuilder.Set());
}
else if (mode == QueryMode.UpdateVersioned)
{
_root = TreeBuilder.Update(TreeBuilder.Versioned(), TreeBuilder.From(), TreeBuilder.Set());
}
else if (mode == QueryMode.Insert)
{
_root = TreeBuilder.Query(TreeBuilder.SelectFrom(TreeBuilder.From()));
_insertRoot = TreeBuilder.Insert(TreeBuilder.Into(), _root as HqlQuery);
}
else
{
_root = TreeBuilder.Query(TreeBuilder.SelectFrom(TreeBuilder.From()));
}
}
public override HqlTreeNode BuildHql(MethodInfo method, Expression targetObject, ReadOnlyCollection <Expression> arguments, HqlTreeBuilder treeBuilder, IHqlExpressionVisitor visitor)
{
HqlAlias alias = null;
HqlWhere where = null;
if (arguments.Count > 1)
{
var expr = (LambdaExpression)arguments[1];
alias = treeBuilder.Alias(expr.Parameters[0].Name);
where = treeBuilder.Where(visitor.Visit(arguments[1]).AsExpression());
}
return(treeBuilder.Exists(
treeBuilder.Query(
treeBuilder.SelectFrom(
treeBuilder.From(
treeBuilder.Range(
visitor.Visit(arguments[0]),
alias)
)
),
where)));
}
public override HqlTreeNode BuildHql(MethodInfo method, Expression targetObject, ReadOnlyCollection <Expression> arguments, HqlTreeBuilder treeBuilder, IHqlExpressionVisitor visitor)
{
// All has two arguments. Arg 1 is the source and arg 2 is the predicate
var predicate = (LambdaExpression)arguments[1];
return(treeBuilder.BooleanNot(
treeBuilder.Exists(
treeBuilder.Query(
treeBuilder.SelectFrom(
treeBuilder.From(
treeBuilder.Range(
visitor.Visit(arguments[0]),
treeBuilder.Alias(predicate.Parameters[0].Name))
)
),
treeBuilder.Where(
treeBuilder.BooleanNot(visitor.Visit(arguments[1]).ToBooleanExpression())
)
)
)
));
}
public override HqlTreeNode BuildHql(MethodInfo method, Expression targetObject, ReadOnlyCollection <Expression> arguments, HqlTreeBuilder treeBuilder, IHqlExpressionVisitor visitor)
{
// TODO - alias generator
HqlAlias alias = treeBuilder.Alias("x");
ParameterExpression param = Expression.Parameter(targetObject.Type, "x");
HqlWhere where = treeBuilder.Where(visitor.Visit(Expression.Lambda(
Expression.Equal(param, arguments[0]), param))
.AsExpression());
return(treeBuilder.Exists(
treeBuilder.Query(
treeBuilder.SelectFrom(
treeBuilder.From(
treeBuilder.Range(
visitor.Visit(targetObject),
alias)
)
),
where)));
}
public IntermediateHqlTree(bool root)
{
_root = root;
TreeBuilder = new HqlTreeBuilder();
Root = TreeBuilder.Query(TreeBuilder.SelectFrom(TreeBuilder.From()));
}
