Merge pull request #4 from bayesquant/master

correct Ge/Le/Gt/Lt opStr

Author: stephentu

src/main/scala/ast.scala

@@ -86,24 +86,25 @@ case class Neq(lhs: SqlExpr, rhs: SqlExpr, ctx: Context = null) extends Equality
   def copyWithChildren(lhs: SqlExpr, rhs: SqlExpr) = copy(lhs = lhs, rhs = rhs, ctx = null)
 }
 
+//wang Ge/Le/Gt/Lt 
 trait InequalityLike extends Binop
 case class Ge(lhs: SqlExpr, rhs: SqlExpr, ctx: Context = null) extends InequalityLike {
-  val opStr = "<="
+  val opStr = ">="
   def copyWithContext(c: Context) = copy(ctx = c)
   def copyWithChildren(lhs: SqlExpr, rhs: SqlExpr) = copy(lhs = lhs, rhs = rhs, ctx = null)
 }
 case class Gt(lhs: SqlExpr, rhs: SqlExpr, ctx: Context = null) extends InequalityLike {
-  val opStr = "<"
+  val opStr = ">"
   def copyWithContext(c: Context) = copy(ctx = c)
   def copyWithChildren(lhs: SqlExpr, rhs: SqlExpr) = copy(lhs = lhs, rhs = rhs, ctx = null)
 }
 case class Le(lhs: SqlExpr, rhs: SqlExpr, ctx: Context = null) extends InequalityLike {
-  val opStr = ">="
+  val opStr = "<="
   def copyWithContext(c: Context) = copy(ctx = c)
   def copyWithChildren(lhs: SqlExpr, rhs: SqlExpr) = copy(lhs = lhs, rhs = rhs, ctx = null)
 }
 case class Lt(lhs: SqlExpr, rhs: SqlExpr, ctx: Context = null) extends InequalityLike {
-  val opStr = ">"
+  val opStr = "<"
   def copyWithContext(c: Context) = copy(ctx = c)
   def copyWithChildren(lhs: SqlExpr, rhs: SqlExpr) = copy(lhs = lhs, rhs = rhs, ctx = null)
 }