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In the column list show foreign key constraint

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This commit is contained in:
eelke 2018-11-10 13:36:36 +01:00
parent 8836611b62
commit 634345b38f
5 changed files with 65 additions and 12 deletions
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17
pglablib/PgConstraintContainer.cpp
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@ -52,16 +52,17 @@ PgConstraint PgConstraintContainer::loadElem(const Pgsql::Row &row)
return v;
}
const PgConstraint* PgConstraintContainer::getFKeyForTableColumn(Oid relid, int16_t attnum) const
std::vector<PgConstraint> PgConstraintContainer::getFKeyForTableColumn(Oid relid, int16_t attnum) const
{
const PgConstraint *result = nullptr;
//const PgConstraint *result = nullptr;
std::vector<PgConstraint> result;
// WHat do we want to find here? On ly single column constraints or all contstraints.
// auto res = std::find_if(m_container.begin(), m_container.end(),
// [relid, attnum] (const auto &c) {
// // the find on v.key may not look super efficient but remember it in general only has one or two elements.
// return relid == c.relid &&
// (std::find(attnum.begin(), attnum.end(), v.key) != attnum.end());
// });
auto res = std::copy_if(m_container.begin(), m_container.end(), std::back_inserter(result),
[relid, attnum] (const auto &c) {
// the find on v.key may not look super efficient but remember it in general only has one or two elements.
return c.type == ConstraintType::ForeignKey && relid == c.relid &&
(std::find(c.key.begin(), c.key.end(), attnum) != c.key.end());
});
return result;
}