本文整理汇总了C#中SqlNode.Equals方法的典型用法代码示例。如果您正苦于以下问题：C# SqlNode.Equals方法的具体用法？C# SqlNode.Equals怎么用？C# SqlNode.Equals使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SqlNode的用法示例。
在下文中一共展示了SqlNode.Equals方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: AreEqual
internal static bool AreEqual(SqlNode node1, SqlNode node2) {
if (node1 == node2)
return true;
if (node1 == null || node2 == null)
return false;
if (node1.NodeType == SqlNodeType.SimpleCase)
node1 = UnwrapTrivialCaseExpression((SqlSimpleCase)node1);
if (node2.NodeType == SqlNodeType.SimpleCase)
node2 = UnwrapTrivialCaseExpression((SqlSimpleCase)node2);
if (node1.NodeType != node2.NodeType) {
// allow expression sets to compare against single expressions
if (node1.NodeType == SqlNodeType.ExprSet) {
SqlExprSet eset = (SqlExprSet)node1;
for (int i = 0, n = eset.Expressions.Count; i < n; i++) {
if (AreEqual(eset.Expressions[i], node2))
return true;
}
}
else if (node2.NodeType == SqlNodeType.ExprSet) {
SqlExprSet eset = (SqlExprSet)node2;
for (int i = 0, n = eset.Expressions.Count; i < n; i++) {
if (AreEqual(node1, eset.Expressions[i]))
return true;
}
}
return false;
}
if (node1.Equals(node2))
return true;
switch (node1.NodeType) {
case SqlNodeType.Not:
case SqlNodeType.Not2V:
case SqlNodeType.Negate:
case SqlNodeType.BitNot:
case SqlNodeType.IsNull:
case SqlNodeType.IsNotNull:
case SqlNodeType.Count:
case SqlNodeType.Max:
case SqlNodeType.Min:
case SqlNodeType.Sum:
case SqlNodeType.Avg:
case SqlNodeType.Stddev:
case SqlNodeType.ValueOf:
case SqlNodeType.OuterJoinedValue:
case SqlNodeType.ClrLength:
return AreEqual(((SqlUnary)node1).Operand, ((SqlUnary)node2).Operand);
case SqlNodeType.Add:
case SqlNodeType.Sub:
case SqlNodeType.Mul:
case SqlNodeType.Div:
case SqlNodeType.Mod:
case SqlNodeType.BitAnd:
case SqlNodeType.BitOr:
case SqlNodeType.BitXor:
case SqlNodeType.And:
case SqlNodeType.Or:
case SqlNodeType.GE:
case SqlNodeType.GT:
case SqlNodeType.LE:
case SqlNodeType.LT:
case SqlNodeType.EQ:
case SqlNodeType.NE:
case SqlNodeType.EQ2V:
case SqlNodeType.NE2V:
case SqlNodeType.Concat:
SqlBinary firstNode = (SqlBinary)node1;
SqlBinary secondNode = (SqlBinary)node2;
return AreEqual(firstNode.Left, secondNode.Left)
&& AreEqual(firstNode.Right, secondNode.Right);
case SqlNodeType.Convert:
case SqlNodeType.Treat: {
SqlUnary sun1 = (SqlUnary)node1;
SqlUnary sun2 = (SqlUnary)node2;
return sun1.ClrType == sun2.ClrType && sun1.SqlType == sun2.SqlType && AreEqual(sun1.Operand, sun2.Operand);
}
case SqlNodeType.Between: {
SqlBetween b1 = (SqlBetween)node1;
SqlBetween b2 = (SqlBetween)node1;
return AreEqual(b1.Expression, b2.Expression) &&
AreEqual(b1.Start, b2.Start) &&
AreEqual(b1.End, b2.End);
}
case SqlNodeType.Parameter:
return node1 == node2;
case SqlNodeType.Alias:
return AreEqual(((SqlAlias)node1).Node, ((SqlAlias)node2).Node);
case SqlNodeType.AliasRef:
return AreEqual(((SqlAliasRef)node1).Alias, ((SqlAliasRef)node2).Alias);
case SqlNodeType.Column:
SqlColumn col1 = (SqlColumn)node1;
SqlColumn col2 = (SqlColumn)node2;
return col1 == col2 || (col1.Expression != null && col2.Expression != null && AreEqual(col1.Expression, col2.Expression));
case SqlNodeType.Table:
return ((SqlTable)node1).MetaTable == ((SqlTable)node2).MetaTable;
case SqlNodeType.Member:
return (((SqlMember)node1).Member == ((SqlMember)node2).Member) &&
//.........这里部分代码省略.........