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Adding LabelOptional rule #173

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merged 8 commits into from
Feb 3, 2024
Merged

Adding LabelOptional rule #173

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1105e8a
Adding LabelOptional rule
Dtenwolde Feb 3, 2024
6f42887
Adding type, generating grammar
Dtenwolde Feb 3, 2024
d1cb7cd
Semicolon missing
Dtenwolde Feb 3, 2024
bfd0fb9
Regenerating grammar
Dtenwolde Feb 3, 2024
0ccf647
Try string
Dtenwolde Feb 3, 2024
544c059
And regenerate grammar
Dtenwolde Feb 3, 2024
684fdd2
Label now optional
Dtenwolde Feb 3, 2024
b47a158
Now also optional for edge tables
Dtenwolde Feb 3, 2024
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13 changes: 9 additions & 4 deletions src/parser/transform/statement/transform_create_property_graph.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -16,11 +16,11 @@ Transformer::TransformPropertyGraphTable(duckdb_libpgquery::PGPropertyGraphTable
vector<string> label_names;

auto table_name = reinterpret_cast<duckdb_libpgquery::PGRangeVar *>(graph_table->table->head->data.ptr_value);
auto graph_table_name = TransformQualifiedName(*table_name);
auto graph_table_name = TransformQualifiedName(*table_name).name;
string table_name_alias =
reinterpret_cast<duckdb_libpgquery::PGValue *>(graph_table->table->head->next->data.ptr_value)->val.str;
if (!table_name_alias.empty()) {
table_alias_map[table_name_alias] = graph_table_name.name;
table_alias_map[table_name_alias] = graph_table_name;
}

bool all_columns = false;
Expand Down Expand Up @@ -54,7 +54,12 @@ Transformer::TransformPropertyGraphTable(duckdb_libpgquery::PGPropertyGraphTable
label_element = label_element->next) {
auto label = reinterpret_cast<duckdb_libpgquery::PGValue *>(label_element->data.ptr_value);
D_ASSERT(label->type == duckdb_libpgquery::T_PGString);
std::string label_str = label->val.str;
std::string label_str;
if (label->val.str == nullptr) {
label_str = graph_table_name;
} else {
label_str = label->val.str;
}
label_str = StringUtil::Lower(label_str);
if (global_label_set.find(label_str) != label_set.end()) {
throw ConstraintException("Label %s is not unique, make sure all labels are unique", label_str);
Expand All @@ -63,7 +68,7 @@ Transformer::TransformPropertyGraphTable(duckdb_libpgquery::PGPropertyGraphTable
label_names.emplace_back(label_str);
}

auto pg_table = make_shared<PropertyGraphTable>(graph_table_name.name, table_name_alias,
auto pg_table = make_shared<PropertyGraphTable>(graph_table_name, table_name_alias,
column_names, label_names);

pg_table->is_vertex_table = graph_table->is_vertex_table;
Expand Down
21 changes: 13 additions & 8 deletions third_party/libpg_query/grammar/statements/pgq.y
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Expand Up @@ -109,6 +109,11 @@ LabelList:
| LabelList ',' PGQ_IDENT { $$ = lappend($1, makeString($3)); }
;

LabelOptional:
LABEL PGQ_IDENT { $$ = $2; }
| /* EMPTY */ { $$ = NULL; }
;

Discriminator:
IN_P qualified_name '(' LabelList ')'
{
Expand All @@ -129,14 +134,14 @@ Discriminator:

VertexTableDefinition:
/* qualified name is an BIGINT column with 64 bits: a maximum of 64 labels can be set */
QualifiednameOptionalAs PropertiesClause LABEL PGQ_IDENT Discriminator
QualifiednameOptionalAs PropertiesClause LabelOptional Discriminator
{
PGPropertyGraphTable *n = (PGPropertyGraphTable*) $5;
PGPropertyGraphTable *n = (PGPropertyGraphTable*) $4;
n->table = $1;
n->properties = $2;
/* Xth label in list is set iff discriminator Xth-bit==1 */
if (n->labels) n->labels = lappend(n->labels,makeString($4));
else n->labels = list_make1(makeString($4));
if (n->labels) n->labels = lappend(n->labels,makeString($3));
else n->labels = list_make1(makeString($3));
n->is_vertex_table = true;
$$ = (PGNode *) n;
}
Expand All @@ -153,9 +158,9 @@ EdgeTableDefinition:
QualifiednameOptionalAs
SOURCE KeyReference qualified_name KeySpecification
DESTINATION KeyReference qualified_name KeySpecification
PropertiesClause LABEL PGQ_IDENT Discriminator
PropertiesClause LabelOptional Discriminator
{
PGPropertyGraphTable *n = (PGPropertyGraphTable*) $13;
PGPropertyGraphTable *n = (PGPropertyGraphTable*) $12;
n->table = $1;
n->is_vertex_table = false;
n->src_fk = $3;
Expand All @@ -166,8 +171,8 @@ EdgeTableDefinition:
n->dst_pk = $9;
n->properties = $10;
/* Xth label in list is set iff discriminator Xth-bit==1 */
if (n->labels) n->labels = lappend(n->labels,makeString($12));
else n->labels = list_make1(makeString($12));
if (n->labels) n->labels = lappend(n->labels,makeString($11));
else n->labels = list_make1(makeString($11));
$$ = (PGNode *) n;
}
;
Expand Down
1 change: 1 addition & 0 deletions third_party/libpg_query/grammar/types/pgq.yh
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Expand Up @@ -53,3 +53,4 @@
%type <list> EdgePattern
%type <list> VertexPattern
%type <node> pgq_expr
%type <str> LabelOptional
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