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Implementation for usable order by clause.
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17 changes: 17 additions & 0 deletions
17
Musoq.Evaluator/Visitors/RewriteFieldOrderedWithGroupMethodCall.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| using Musoq.Parser.Nodes; | ||
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| namespace Musoq.Evaluator.Visitors; | ||
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| public class RewriteFieldOrderedWithGroupMethodCall : RewriteFieldWithGroupMethodCallBase<FieldOrderedNode> | ||
| { | ||
| public RewriteFieldOrderedWithGroupMethodCall(FieldNode[] nodes) | ||
| : base(nodes) | ||
| { | ||
| } | ||
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| public override void Visit(FieldOrderedNode node) | ||
| { | ||
| base.Visit(node); | ||
| Expression = Nodes.Pop() as FieldOrderedNode; | ||
| } | ||
| } |
79 changes: 5 additions & 74 deletions
79
Musoq.Evaluator/Visitors/RewriteFieldWithGroupMethodCall.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,87 +1,18 @@ | ||
| using System.Collections.Generic; | ||
| using System.Linq; | ||
| using Musoq.Evaluator.Helpers; | ||
| using Musoq.Parser; | ||
| using Musoq.Parser.Nodes; | ||
| using Musoq.Parser.Tokens; | ||
| using Musoq.Plugins; | ||
| using Musoq.Parser.Nodes; | ||
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| namespace Musoq.Evaluator.Visitors | ||
| { | ||
| public class RewriteFieldWithGroupMethodCall : CloneQueryVisitor | ||
| public class RewriteFieldWithGroupMethodCall : RewriteFieldWithGroupMethodCallBase<FieldNode> | ||
| { | ||
| private readonly FieldNode[] _fields; | ||
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| public RewriteFieldWithGroupMethodCall(FieldNode[] fields) | ||
| public RewriteFieldWithGroupMethodCall(FieldNode[] nodes) | ||
| : base(nodes) | ||
| { | ||
| _fields = fields; | ||
| } | ||
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| public FieldNode Expression { get; private set; } | ||
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| public override void Visit(FieldNode node) | ||
| { | ||
| base.Visit(node); | ||
| Expression = Nodes.Pop() as FieldNode; | ||
| } | ||
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| public override void Visit(AccessColumnNode node) | ||
| { | ||
| Nodes.Push(new AccessColumnNode(NamingHelper.ToColumnName(node.Alias, node.Name), string.Empty, | ||
| node.ReturnType, TextSpan.Empty)); | ||
| } | ||
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| public override void Visit(DotNode node) | ||
| { | ||
| if (!(node.Root is DotNode) && node.Root is AccessColumnNode column) | ||
| { | ||
| Nodes.Pop(); | ||
| Nodes.Pop(); | ||
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| var name = $"{NamingHelper.ToColumnName(column.Alias, column.Name)}.{node.Expression.ToString()}"; | ||
| Nodes.Push(new AccessColumnNode(name, string.Empty, node.ReturnType, TextSpan.Empty)); | ||
| return; | ||
| } | ||
|
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| base.Visit(node); | ||
| } | ||
|
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| public override void Visit(AccessMethodNode node) | ||
| { | ||
| if (node.IsAggregateMethod()) | ||
| { | ||
| Nodes.Pop(); | ||
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| var wordNode = node.Arguments.Args[0] as WordNode; | ||
| var accessGroup = new AccessColumnNode("none", string.Empty, typeof(Group), TextSpan.Empty); | ||
| var args = new List<Node> {accessGroup, wordNode}; | ||
| args.AddRange(node.Arguments.Args.Skip(1)); | ||
| var extractFromGroup = new AccessMethodNode( | ||
| new FunctionToken(node.Method.Name, TextSpan.Empty), | ||
| new ArgsListNode(args.ToArray()), node.ExtraAggregateArguments, node.CanSkipInjectSource, node.Method, node.Alias); | ||
| Nodes.Push(extractFromGroup); | ||
| } | ||
| else if (_fields.Select(f => f.Expression.ToString()).Contains(node.ToString())) | ||
| { | ||
| Nodes.Push(new AccessColumnNode(node.ToString(), string.Empty, node.ReturnType, TextSpan.Empty)); | ||
| } | ||
| else | ||
| { | ||
| base.Visit(node); | ||
| } | ||
| } | ||
|
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| public override void Visit(AccessCallChainNode node) | ||
| { | ||
| Nodes.Push(new AccessColumnNode(node.ToString(), string.Empty, node.ReturnType, TextSpan.Empty)); | ||
| } | ||
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| public override void Visit(CaseNode node) | ||
| { | ||
| if (_fields.Select(f => f.Expression.ToString()).Contains(node.ToString())) | ||
| Nodes.Push(new AccessColumnNode(node.ToString(), string.Empty, node.ReturnType, TextSpan.Empty)); | ||
| else | ||
| base.Visit(node); | ||
| } | ||
| } | ||
| } |
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