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GH-40968: [C++][Gandiva] add RE2::Options set_dot_nl(true) for Like function #40970

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merged 6 commits into from
Apr 12, 2024
+37 −13
Merged

GH-40968: [C++][Gandiva] add RE2::Options set_dot_nl(true) for Like function #40970

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b1d9a7a
GH-40968 add set_dot_nl(true) for Like option
xxlaykxx Apr 3, 2024
f63772f
fixed codestyle
xxlaykxx Apr 3, 2024
20fc8b8
fixed codestyle
xxlaykxx Apr 3, 2024
4695c87
refactored tests
xxlaykxx Apr 9, 2024
9b9e3c7
restore Make method for LIKE
xxlaykxx Apr 9, 2024
e3410c6
Merge branch 'apache:main' into GH-40968
xxlaykxx Apr 9, 2024
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14 changes: 9 additions & 5 deletions cpp/src/gandiva/regex_functions_holder.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -99,13 +99,14 @@ Result<std::shared_ptr<LikeHolder>> LikeHolder::Make(const FunctionNode& node) {
"'like' function requires a string literal as the second parameter"));

RE2::Options regex_op;
regex_op.set_dot_nl(true); // set dotall mode for the regex.
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This breaks backward compatibility, right?
Can we keep backward compatibility?

if (node.descriptor()->name() == "ilike") {
regex_op.set_case_sensitive(false); // set case-insensitive for ilike function.

return Make(std::get<std::string>(literal->holder()), regex_op);
}
if (node.children().size() == 2) {
return Make(std::get<std::string>(literal->holder()));
return Make(std::get<std::string>(literal->holder()), regex_op);
} else {
auto escape_char = dynamic_cast<LiteralNode*>(node.children().at(2).get());
ARROW_RETURN_IF(
Expand All @@ -118,15 +119,17 @@ Result<std::shared_ptr<LikeHolder>> LikeHolder::Make(const FunctionNode& node) {
Status::Invalid(
"'like' function requires a string literal as the third parameter"));
return Make(std::get<std::string>(literal->holder()),
std::get<std::string>(escape_char->holder()));
std::get<std::string>(escape_char->holder()), regex_op);
}
}

Result<std::shared_ptr<LikeHolder>> LikeHolder::Make(const std::string& sql_pattern) {
std::string pcre_pattern;
ARROW_RETURN_NOT_OK(RegexUtil::SqlLikePatternToPcre(sql_pattern, pcre_pattern));

auto lholder = std::shared_ptr<LikeHolder>(new LikeHolder(pcre_pattern));
RE2::Options regex_op;
regex_op.set_dot_nl(true); // set dotall mode for the regex.
auto lholder = std::shared_ptr<LikeHolder>(new LikeHolder(pcre_pattern, regex_op));
ARROW_RETURN_IF(!lholder->regex_.ok(),
Status::Invalid("Building RE2 pattern '", pcre_pattern,
"' failed with: ", lholder->regex_.error()));
Expand All @@ -135,7 +138,8 @@ Result<std::shared_ptr<LikeHolder>> LikeHolder::Make(const std::string& sql_patt
}

Result<std::shared_ptr<LikeHolder>> LikeHolder::Make(const std::string& sql_pattern,
const std::string& escape_char) {
const std::string& escape_char,
RE2::Options regex_op) {
ARROW_RETURN_IF(escape_char.length() > 1,
Status::Invalid("The length of escape char ", escape_char,
" in 'like' function is greater than 1"));
Expand All @@ -147,7 +151,7 @@ Result<std::shared_ptr<LikeHolder>> LikeHolder::Make(const std::string& sql_patt
ARROW_RETURN_NOT_OK(RegexUtil::SqlLikePatternToPcre(sql_pattern, pcre_pattern));
}

auto lholder = std::shared_ptr<LikeHolder>(new LikeHolder(pcre_pattern));
auto lholder = std::shared_ptr<LikeHolder>(new LikeHolder(pcre_pattern, regex_op));
ARROW_RETURN_IF(!lholder->regex_.ok(),
Status::Invalid("Building RE2 pattern '", pcre_pattern,
"' failed with: ", lholder->regex_.error()));
Expand Down
3 changes: 2 additions & 1 deletion cpp/src/gandiva/regex_functions_holder.h
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Expand Up @@ -40,7 +40,8 @@ class GANDIVA_EXPORT LikeHolder : public FunctionHolder {
static Result<std::shared_ptr<LikeHolder>> Make(const std::string& sql_pattern);

static Result<std::shared_ptr<LikeHolder>> Make(const std::string& sql_pattern,
const std::string& escape_char);
const std::string& escape_char,
RE2::Options regex_op);

static Result<std::shared_ptr<LikeHolder>> Make(const std::string& sql_pattern,
RE2::Options regex_op);
Expand Down
33 changes: 26 additions & 7 deletions cpp/src/gandiva/regex_functions_holder_test.cc
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Expand Up @@ -28,6 +28,8 @@ namespace gandiva {
class TestLikeHolder : public ::testing::Test {
public:
RE2::Options regex_op;
void SetUp() { regex_op.set_dot_nl(true); }

FunctionNode BuildLike(std::string pattern) {
auto field = std::make_shared<FieldNode>(arrow::field("in", arrow::utf8()));
auto pattern_node =
Expand Down Expand Up @@ -77,6 +79,14 @@ TEST_F(TestLikeHolder, TestPcreSpecial) {
EXPECT_FALSE(like("xxabc"));
}

TEST_F(TestLikeHolder, TestPcreSpecialWithNewLine) {
EXPECT_OK_AND_ASSIGN(auto const like_holder, LikeHolder::Make("%Space1.%", regex_op));
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Can you also add a simpler test case, e.g. 'abc\nd' LIKE '%abc%' is enough to demonstate this change.


auto& like = *like_holder;
EXPECT_TRUE(
like("[name: \"Space1.protect\"\nargs: \"count\"\ncolumn_name: \"pass_count\"]"));
}

TEST_F(TestLikeHolder, TestRegexEscape) {
std::string res;
ARROW_EXPECT_OK(RegexUtil::SqlLikePatternToPcre("#%hello#_abc_def##", '#', res));
Expand All @@ -91,14 +101,22 @@ TEST_F(TestLikeHolder, TestDot) {
EXPECT_FALSE(like("abcd"));
}

TEST_F(TestLikeHolder, TestMatchWithNewLine) {
EXPECT_OK_AND_ASSIGN(auto const like_holder, LikeHolder::Make("%abc%", regex_op));

auto& like = *like_holder;
EXPECT_TRUE(like("abc\nd"));
}

TEST_F(TestLikeHolder, TestMatchSubString) {
EXPECT_OK_AND_ASSIGN(auto like_holder, LikeHolder::Make("%abc%", "\\"));
EXPECT_OK_AND_ASSIGN(auto like_holder, LikeHolder::Make("%abc%", "\\", regex_op));

auto& like = *like_holder;
EXPECT_TRUE(like("abc"));
EXPECT_FALSE(like("xxabdc"));

EXPECT_OK_AND_ASSIGN(like_holder, LikeHolder::Make("%ab-.^$*+?()[]{}|—/c\\%%", "\\"));
EXPECT_OK_AND_ASSIGN(like_holder,
LikeHolder::Make("%ab-.^$*+?()[]{}|—/c\\%%", "\\", regex_op));

auto& like_reserved_char = *like_holder;
EXPECT_TRUE(like_reserved_char("XXab-.^$*+?()[]{}|—/c%d"));
Expand Down Expand Up @@ -173,7 +191,7 @@ TEST_F(TestLikeHolder, TestOptimise) {
}

TEST_F(TestLikeHolder, TestMatchOneEscape) {
EXPECT_OK_AND_ASSIGN(auto const like_holder, LikeHolder::Make("ab\\_", "\\"));
EXPECT_OK_AND_ASSIGN(auto const like_holder, LikeHolder::Make("ab\\_", "\\", regex_op));

auto& like = *like_holder;

Expand All @@ -187,7 +205,7 @@ TEST_F(TestLikeHolder, TestMatchOneEscape) {
}

TEST_F(TestLikeHolder, TestMatchManyEscape) {
EXPECT_OK_AND_ASSIGN(auto const like_holder, LikeHolder::Make("ab\\%", "\\"));
EXPECT_OK_AND_ASSIGN(auto const like_holder, LikeHolder::Make("ab\\%", "\\", regex_op));

auto& like = *like_holder;

Expand All @@ -201,7 +219,8 @@ TEST_F(TestLikeHolder, TestMatchManyEscape) {
}

TEST_F(TestLikeHolder, TestMatchEscape) {
EXPECT_OK_AND_ASSIGN(auto const like_holder, LikeHolder::Make("ab\\\\", "\\"));
EXPECT_OK_AND_ASSIGN(auto const like_holder,
LikeHolder::Make("ab\\\\", "\\", regex_op));

auto& like = *like_holder;

Expand All @@ -211,7 +230,7 @@ TEST_F(TestLikeHolder, TestMatchEscape) {
}

TEST_F(TestLikeHolder, TestEmptyEscapeChar) {
EXPECT_OK_AND_ASSIGN(auto const like_holder, LikeHolder::Make("ab\\_", ""));
EXPECT_OK_AND_ASSIGN(auto const like_holder, LikeHolder::Make("ab\\_", "", regex_op));

auto& like = *like_holder;

Expand All @@ -223,7 +242,7 @@ TEST_F(TestLikeHolder, TestEmptyEscapeChar) {
}

TEST_F(TestLikeHolder, TestMultipleEscapeChar) {
ASSERT_RAISES(Invalid, LikeHolder::Make("ab\\_", "\\\\").status());
ASSERT_RAISES(Invalid, LikeHolder::Make("ab\\_", "\\\\", regex_op).status());
}

class TestILikeHolder : public ::testing::Test {
Expand Down
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