1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
|
#include "replace_table_reads.h"
#include <yql/essentials/public/purecalc/common/names.h>
#include <yql/essentials/public/purecalc/common/transformations/utils.h>
#include <yql/essentials/core/yql_expr_optimize.h>
#include <yql/essentials/core/yql_expr_type_annotation.h>
using namespace NYql;
using namespace NYql::NPureCalc;
namespace {
class TTableReadsReplacer: public TSyncTransformerBase {
private:
const TVector<const TStructExprType*>& InputStructs_;
bool UseSystemColumns_;
EProcessorMode ProcessorMode_;
TString CallableName_;
TString TablePrefix_;
bool Complete_ = false;
public:
explicit TTableReadsReplacer(
const TVector<const TStructExprType*>& inputStructs,
bool useSystemColumns,
EProcessorMode processorMode,
TString inputNodeName,
TString tablePrefix
)
: InputStructs_(inputStructs)
, UseSystemColumns_(useSystemColumns)
, ProcessorMode_(processorMode)
, CallableName_(std::move(inputNodeName))
, TablePrefix_(std::move(tablePrefix))
{
}
TTableReadsReplacer(TVector<const TStructExprType*>&&, TString, TString) = delete;
public:
TStatus DoTransform(const TExprNode::TPtr input, TExprNode::TPtr& output, TExprContext& ctx) final {
output = input;
if (Complete_) {
return TStatus::Ok;
}
TOptimizeExprSettings settings(nullptr);
auto status = OptimizeExpr(input, output, [&](const TExprNode::TPtr& node, TExprContext& ctx) -> TExprNode::TPtr {
if (node->IsCallable(NNodes::TCoRight::CallableName())) {
TIssueScopeGuard issueScope(ctx.IssueManager, [&]() {
return new TIssue(ctx.GetPosition(node->Pos()), TStringBuilder() << "At function: " << node->Content());
});
if (!EnsureMinArgsCount(*node, 1, ctx)) {
return nullptr;
}
if (node->Child(0)->IsCallable(NNodes::TCoCons::CallableName())) {
return node;
}
if (!node->Child(0)->IsCallable(NNodes::TCoRead::CallableName())) {
ctx.AddError(TIssue(ctx.GetPosition(node->Child(0)->Pos()), TStringBuilder() << "Expected Read!"));
return nullptr;
}
return BuildInputFromRead(node->Pos(), node->ChildPtr(0), ctx);
} else if (node->IsCallable(NNodes::TCoLeft::CallableName())) {
TIssueScopeGuard issueScope(ctx.IssueManager, [&]() {
return new TIssue(ctx.GetPosition(node->Pos()), TStringBuilder() << "At function: " << node->Content());
});
if (!EnsureMinArgsCount(*node, 1, ctx)) {
return nullptr;
}
if (!node->Child(0)->IsCallable(NNodes::TCoRead::CallableName())) {
ctx.AddError(TIssue(ctx.GetPosition(node->Child(0)->Pos()), TStringBuilder() << "Expected Read!"));
return nullptr;
}
return node->Child(0)->HeadPtr();
}
return node;
}, ctx, settings);
if (status.Level == TStatus::Ok) {
Complete_ = true;
}
return status;
}
void Rewind() override {
Complete_ = false;
}
private:
TExprNode::TPtr BuildInputFromRead(TPositionHandle replacePos, const TExprNode::TPtr& node, TExprContext& ctx) {
TIssueScopeGuard issueScope(ctx.IssueManager, [&]() {
return MakeIntrusive<TIssue>(ctx.GetPosition(node->Pos()), TStringBuilder() << "At function: " << node->Content());
});
if (!EnsureMinArgsCount(*node, 3, ctx)) {
return nullptr;
}
const auto source = node->ChildPtr(2);
if (source->IsCallable(NNodes::TCoKey::CallableName())) {
return BuildInputFromKey(replacePos, source, ctx);
}
if (source->IsCallable("DataTables")) {
return BuildInputFromDataTables(replacePos, source, ctx);
}
ctx.AddError(TIssue(ctx.GetPosition(source->Pos()), TStringBuilder() << "Unsupported read source: " << source->Content()));
return nullptr;
}
TExprNode::TPtr BuildInputFromKey(TPositionHandle replacePos, const TExprNode::TPtr& node, TExprContext& ctx) {
TIssueScopeGuard issueScope(ctx.IssueManager, [&]() {
return MakeIntrusive<TIssue>(ctx.GetPosition(node->Pos()), TStringBuilder() << "At function: " << node->Content());
});
ui32 inputIndex;
TExprNode::TPtr inputTableName;
if (!TryFetchInputIndexFromKey(node, ctx, inputIndex, inputTableName)) {
return nullptr;
}
YQL_ENSURE(inputTableName->IsCallable(NNodes::TCoString::CallableName()));
auto inputNode = ctx.Builder(replacePos)
.Callable(CallableName_)
.Atom(0, ToString(inputIndex))
.Seal()
.Build();
if (inputNode->IsCallable(PurecalcBlockInputCallableName)) {
const auto inputStruct = InputStructs_[inputIndex]->Cast<TStructExprType>();
const auto blocksLambda = NodeFromBlocks(replacePos, inputStruct, ctx);
bool wrapLMap = ProcessorMode_ == EProcessorMode::PullList;
inputNode = ApplyToIterable(replacePos, inputNode, blocksLambda, wrapLMap, ctx);
}
if (UseSystemColumns_) {
auto mapLambda = ctx.Builder(replacePos)
.Lambda()
.Param("row")
.Callable(0, NNodes::TCoAddMember::CallableName())
.Arg(0, "row")
.Atom(1, PurecalcSysColumnTablePath)
.Add(2, inputTableName)
.Seal()
.Seal()
.Build();
return ctx.Builder(replacePos)
.Callable(NNodes::TCoMap::CallableName())
.Add(0, std::move(inputNode))
.Add(1, std::move(mapLambda))
.Seal()
.Build();
}
return inputNode;
}
TExprNode::TPtr BuildInputFromDataTables(TPositionHandle replacePos, const TExprNode::TPtr& node, TExprContext& ctx) {
TIssueScopeGuard issueScope(ctx.IssueManager, [&]() {
return MakeIntrusive<TIssue>(ctx.GetPosition(node->Pos()), TStringBuilder() << "At function: " << node->Content());
});
if (InputStructs_.empty()) {
ctx.AddError(TIssue(ctx.GetPosition(node->Pos()), "No inputs provided by input spec"));
return nullptr;
}
if (!EnsureArgsCount(*node, 0, ctx)) {
return nullptr;
}
auto builder = ctx.Builder(replacePos);
if (InputStructs_.size() > 1) {
auto listBuilder = builder.List();
for (ui32 i = 0; i < InputStructs_.size(); ++i) {
listBuilder.Callable(i, CallableName_).Atom(0, ToString(i)).Seal();
}
return listBuilder.Seal().Build();
}
return builder.Callable(CallableName_).Atom(0, "0").Seal().Build();
}
bool TryFetchInputIndexFromKey(const TExprNode::TPtr& node, TExprContext& ctx, ui32& resultIndex, TExprNode::TPtr& resultTableName) {
if (!EnsureArgsCount(*node, 1, ctx)) {
return false;
}
const auto* keyArg = node->Child(0);
if (!keyArg->IsList() || keyArg->ChildrenSize() != 2 || !keyArg->Child(0)->IsAtom("table") ||
!keyArg->Child(1)->IsCallable(NNodes::TCoString::CallableName()))
{
ctx.AddError(TIssue(ctx.GetPosition(keyArg->Pos()), "Expected single table name"));
return false;
}
resultTableName = keyArg->ChildPtr(1);
auto tableName = resultTableName->Child(0)->Content();
if (!tableName.StartsWith(TablePrefix_)) {
ctx.AddError(TIssue(ctx.GetPosition(resultTableName->Child(0)->Pos()),
TStringBuilder() << "Invalid table name " << TString{tableName}.Quote() << ": prefix must be " << TablePrefix_.Quote()));
return false;
}
tableName.SkipPrefix(TablePrefix_);
if (!tableName) {
resultIndex = 0;
} else if (!TryFromString(tableName, resultIndex)) {
ctx.AddError(TIssue(ctx.GetPosition(resultTableName->Child(0)->Pos()),
TStringBuilder() << "Invalid table name " << TString{tableName}.Quote() << ": suffix must be UI32 number"));
return false;
}
return true;
}
};
}
TAutoPtr<IGraphTransformer> NYql::NPureCalc::MakeTableReadsReplacer(
const TVector<const TStructExprType*>& inputStructs,
bool useSystemColumns,
EProcessorMode processorMode,
TString callableName,
TString tablePrefix
) {
return new TTableReadsReplacer(inputStructs, useSystemColumns, processorMode, std::move(callableName), std::move(tablePrefix));
}
|
