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Add getOutputMessage() accessor to Statement #45

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Merged
asfernandes merged 3 commits into from
Mar 14, 2026
Merged

Add getOutputMessage() accessor to Statement #45

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eba317b
Add getOutputMessage() accessor to Statement
fdcastel Mar 12, 2026
2c87ad2
test: validate output buffer via metadata offset
fdcastel Mar 12, 2026
2608b7c
test: use getOutputDescriptors offset instead of IMetaData::getOffset
fdcastel Mar 14, 2026
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8 changes: 8 additions & 0 deletions src/fb-cpp/Statement.h
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Original file line number Diff line number Diff line change
Expand Up @@ -408,6 +408,14 @@ namespace fbcpp
return outMetadata;
}

///
/// @brief Provides direct access to the raw output message buffer.
///
std::vector<std::byte>& getOutputMessage() noexcept
{
return outMessage;
}

///
/// @brief Returns the type classification reported by the server.
///
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23 changes: 23 additions & 0 deletions src/test/Statement.cpp
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Expand Up @@ -336,6 +336,29 @@ BOOST_AUTO_TEST_CASE(descriptorMetadataFields)
BOOST_CHECK(inDescriptors[0].alias.empty());
}

BOOST_AUTO_TEST_CASE(getOutputMessageContainsFetchedValueAtMetadataOffset)
{
const auto database = getTempFile("Statement-getOutputMessageContainsFetchedValueAtMetadataOffset.fdb");

Attachment attachment{CLIENT, database, AttachmentOptions().setCreateDatabase(true)};
FbDropDatabase attachmentDrop{attachment};

Transaction transaction{attachment};
Statement stmt{attachment, transaction, "select 42 from rdb$database"};

auto& outMsg = stmt.getOutputMessage();
BOOST_CHECK(!outMsg.empty());

const auto valueOffset = stmt.getOutputDescriptors()[0].offset;

BOOST_REQUIRE(stmt.execute(transaction));
BOOST_CHECK_EQUAL(stmt.getInt32(0).value(), 42);

BOOST_REQUIRE_GE(outMsg.size(), valueOffset + sizeof(std::int32_t));
const auto* data = &outMsg[valueOffset];
BOOST_CHECK_EQUAL(*reinterpret_cast<const std::int32_t*>(data), 42);
}

BOOST_AUTO_TEST_SUITE_END()


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