public virtual void Visit(ComparisonExpression expression)
{
this.LoadQuery();
this.Descend(this.FieldNames(expression.Left()));
expression.Right().Accept(this.ComparisonEmitter());
this.Constrain(expression.Op());
}
public override bool Equals(object other)
{
if (this == other)
{
return(true);
}
if (other == null || GetType() != other.GetType())
{
return(false);
}
Db4objects.Db4o.NativeQueries.Expr.ComparisonExpression casted = (Db4objects.Db4o.NativeQueries.Expr.ComparisonExpression
)other;
return(_left.Equals(casted._left) && _right.Equals(casted._right) && _op.Equals(casted
._op));
}
public virtual void Visit(ComparisonExpression expression)
{
IQuery subQuery = Descend(expression.Left());
ComparisonQueryGeneratingVisitor visitor = new ComparisonQueryGeneratingVisitor(_predicate
, _classSource, _referenceResolver);
expression.Right().Accept(visitor);
_constraint = subQuery.Constrain(visitor.Value());
ComparisonOperator op = expression.Op();
if (op.Equals(ComparisonOperator.ValueEquality))
{
return;
}
if (op.Equals(ComparisonOperator.ReferenceEquality))
{
_constraint.Identity();
return;
}
if (op.Equals(ComparisonOperator.Greater))
{
_constraint.Greater();
return;
}
if (op.Equals(ComparisonOperator.Smaller))
{
_constraint.Smaller();
return;
}
if (op.Equals(ComparisonOperator.Contains))
{
_constraint.Contains();
return;
}
if (op.Equals(ComparisonOperator.StartsWith))
{
_constraint.StartsWith(true);
return;
}
if (op.Equals(ComparisonOperator.EndsWith))
{
_constraint.EndsWith(true);
return;
}
throw new Exception("Can't handle constraint: " + op);
}
public virtual void Visit(ComparisonExpression expression)
{
expression.Left().Accept(this);
expression.Right().Accept(this);
}
public void TestQueryWithEnumConstrain()
{
var expression = ExpressionFromMethod("MatchEnumConstrain");
IExpression expected = new ComparisonExpression(
NewFieldValue(CandidateFieldRoot.Instance, "_priority", typeof (MessagePriority)),
new ConstValue(MessagePriority.High),
ComparisonOperator.ValueEquality);
Assert.AreEqual(expected, expression);
}
public virtual void Visit(ComparisonExpression expression)
{
expression.Left().Accept(this);
expression.Right().Accept(this);
}