public override IQLin StartsWith(string @string)
{
IConstraint constraint = _node.Constrain(@string);
constraint.StartsWith(true);
return(new QLinConstraint(((QLinRoot)_root), constraint));
}
public IConstraint ApplyOperator(IConstraint cons, string db4oOperator)
{
try
{
switch (db4oOperator)
{
case BusinessConstants.CONDITION_STARTSWITH:
cons.StartsWith(false);
break;
case BusinessConstants.CONDITION_ENDSWITH:
cons.EndsWith(false);
break;
case BusinessConstants.CONDITION_EQUALS:
cons.Equal();
break;
case BusinessConstants.CONDITION_NOTEQUALS:
cons.Not();
break;
case BusinessConstants.CONDITION_GREATERTHAN:
cons.Greater();
break;
case BusinessConstants.CONDITION_GREATERTHANEQUAL:
cons.Greater().Equal();
break;
case BusinessConstants.CONDITION_LESSTHAN:
cons.Smaller();
break;
case BusinessConstants.CONDITION_LESSTHANEQUAL:
cons.Smaller().Equal();
break;
case BusinessConstants.CONDITION_CONTAINS:
cons.Like();
break;
}
return(cons);
}
catch (Exception oEx)
{
LoggingHelper.HandleException(oEx);
return(null);
}
}
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 void Modify(IConstraint constraint)
{
constraint.StartsWith(false);
}
public void Modify(IConstraint constraint)
{
constraint.StartsWith(false);
}
public IConstraint ApplyOperator(IConstraint cons, string db4oOperator)
{
try
{
switch (db4oOperator)
{
case BusinessConstants.CONDITION_STARTSWITH:
cons.StartsWith(false);
break;
case BusinessConstants.CONDITION_ENDSWITH:
cons.EndsWith(false);
break;
case BusinessConstants.CONDITION_EQUALS:
cons.Equal();
break;
case BusinessConstants.CONDITION_NOTEQUALS:
cons.Not();
break;
case BusinessConstants.CONDITION_GREATERTHAN :
cons.Greater();
break;
case BusinessConstants.CONDITION_GREATERTHANEQUAL:
cons.Greater().Equal();
break;
case BusinessConstants.CONDITION_LESSTHAN :
cons.Smaller();
break;
case BusinessConstants.CONDITION_LESSTHANEQUAL:
cons.Smaller().Equal();
break;
case BusinessConstants.CONDITION_CONTAINS:
cons.Like();
break;
}
return cons;
}
catch (Exception oEx)
{
LoggingHelper.HandleException(oEx);
return null;
}
}
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);
}