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go-jet 2019-07-15 13:06:06 +02:00
parent 518ff49a77
commit c78ca8a876
17 changed files with 105 additions and 81 deletions
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24
operators.go
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@ -6,51 +6,55 @@ import "errors"
// Returns a representation of "not expr"
func NOT(expr BoolExpression) BoolExpression {
return newPrefixBoolExpression(expr, "NOT")
return newPrefixBoolOperator(expr, "NOT")
}
func BIT_NOT(expr IntegerExpression) IntegerExpression {
return newPrefixIntegerOperator(expr, "~")
}
//----------- Comparison operators ---------------//
func EXISTS(subQuery SelectStatement) BoolExpression {
return newPrefixBoolExpression(subQuery, "EXISTS")
return newPrefixBoolOperator(subQuery, "EXISTS")
}
// Returns a representation of "a=b"
func eq(lhs, rhs Expression) BoolExpression {
return newBinaryBoolExpression(lhs, rhs, "=")
return newBinaryBoolOperator(lhs, rhs, "=")
}
// Returns a representation of "a!=b"
func notEq(lhs, rhs Expression) BoolExpression {
return newBinaryBoolExpression(lhs, rhs, "!=")
return newBinaryBoolOperator(lhs, rhs, "!=")
}
func isDistinctFrom(lhs, rhs Expression) BoolExpression {
return newBinaryBoolExpression(lhs, rhs, "IS DISTINCT FROM")
return newBinaryBoolOperator(lhs, rhs, "IS DISTINCT FROM")
}
func isNotDistinctFrom(lhs, rhs Expression) BoolExpression {
return newBinaryBoolExpression(lhs, rhs, "IS NOT DISTINCT FROM")
return newBinaryBoolOperator(lhs, rhs, "IS NOT DISTINCT FROM")
}
// Returns a representation of "a<b"
func lt(lhs Expression, rhs Expression) BoolExpression {
return newBinaryBoolExpression(lhs, rhs, "<")
return newBinaryBoolOperator(lhs, rhs, "<")
}
// Returns a representation of "a<=b"
func ltEq(lhs, rhs Expression) BoolExpression {
return newBinaryBoolExpression(lhs, rhs, "<=")
return newBinaryBoolOperator(lhs, rhs, "<=")
}
// Returns a representation of "a>b"
func gt(lhs, rhs Expression) BoolExpression {
return newBinaryBoolExpression(lhs, rhs, ">")
return newBinaryBoolOperator(lhs, rhs, ">")
}
// Returns a representation of "a>=b"
func gtEq(lhs, rhs Expression) BoolExpression {
return newBinaryBoolExpression(lhs, rhs, ">=")
return newBinaryBoolOperator(lhs, rhs, ">=")
}
// --------------- CASE operator -------------------//