kuzudb · acquamarin · Mar 14, 2023 · Mar 14, 2023
diff --git a/src/antlr4/Cypher.g4 b/src/antlr4/Cypher.g4
@@ -21,7 +21,10 @@ kU_CopyCSV
 
 kU_FilePaths
     : '[' SP? StringLiteral ( SP? ',' SP? StringLiteral )* ']'
-        | StringLiteral ;
+        | StringLiteral
+        | GLOB SP? '(' SP? StringLiteral SP? ')' ;
+
+GLOB : ( 'G' | 'g' ) ( 'L' | 'l' ) ( 'O' | 'o' ) ( 'B' | 'b' ) ;
 
 kU_ParsingOptions
     : kU_ParsingOption ( SP? ',' SP? kU_ParsingOption )* ;

diff --git a/src/binder/bind/bind_copy.cpp b/src/binder/bind/bind_copy.cpp
@@ -15,13 +15,26 @@ std::unique_ptr<BoundStatement> Binder::bindCopy(const Statement& statement) {
     auto tableName = copyCSV.getTableName();
     validateTableExist(catalog, tableName);
     auto tableID = catalogContent->getTableID(tableName);
-    auto filePaths = copyCSV.getFilePaths();
     auto csvReaderConfig = bindParsingOptions(copyCSV.getParsingOptions());
+    auto filePaths = bindFilePaths(copyCSV.getFilePaths());
     auto fileType = bindFileType(filePaths);
     return make_unique<BoundCopy>(
         CopyDescription(filePaths, csvReaderConfig, fileType), tableID, tableName);
 }
 
+std::vector<std::string> Binder::bindFilePaths(const std::vector<std::string>& filePaths) {
+    std::vector<std::string> boundFilePaths;
+    for (auto& filePath : filePaths) {
+        auto globbedFilePaths = FileUtils::globFilePath(filePath);
+        boundFilePaths.insert(
+            boundFilePaths.end(), globbedFilePaths.begin(), globbedFilePaths.end());
+    }
+    if (boundFilePaths.empty()) {
+        throw BinderException{StringUtils::string_format("Invalid file path: {}.", filePaths[0])};
+    }
+    return boundFilePaths;
+}
+
 CSVReaderConfig Binder::bindParsingOptions(
     const std::unordered_map<std::string, std::unique_ptr<ParsedExpression>>* parsingOptions) {
     CSVReaderConfig csvReaderConfig;
@@ -85,29 +98,15 @@ CopyDescription::FileType Binder::bindFileType(std::vector<std::string> filePath
     auto csvSuffix = CopyDescription::getFileTypeSuffix(CopyDescription::FileType::CSV);
     auto arrowSuffix = CopyDescription::getFileTypeSuffix(CopyDescription::FileType::ARROW);
     auto parquetSuffix = CopyDescription::getFileTypeSuffix(CopyDescription::FileType::PARQUET);
-
-    if (fileName.length() >= csvSuffix.length()) {
-        if (!fileName.compare(
-                fileName.length() - csvSuffix.length(), csvSuffix.length(), csvSuffix)) {
-            return CopyDescription::FileType::CSV;
-        }
+    if (fileName.ends_with(csvSuffix)) {
+        return CopyDescription::FileType::CSV;
+    } else if (fileName.ends_with(arrowSuffix)) {
+        return CopyDescription::FileType::ARROW;
+    } else if (fileName.ends_with(parquetSuffix)) {
+        return CopyDescription::FileType::PARQUET;
+    } else {
+        throw CopyException("Unsupported file type: " + fileName);
     }
-
-    if (fileName.length() >= arrowSuffix.length()) {
-        if (!fileName.compare(
-                fileName.length() - arrowSuffix.length(), arrowSuffix.length(), arrowSuffix)) {
-            return CopyDescription::FileType::ARROW;
-        }
-    }
-
-    if (fileName.length() >= parquetSuffix.length()) {
-        if (!fileName.compare(fileName.length() - parquetSuffix.length(), parquetSuffix.length(),
-                parquetSuffix)) {
-            return CopyDescription::FileType::PARQUET;
-        }
-    }
-
-    throw CopyException("Unsupported file type: " + fileName);
 }
 
 } // namespace binder

diff --git a/src/common/file_utils.cpp b/src/common/file_utils.cpp
@@ -113,5 +113,15 @@ void FileUtils::truncateFileToEmpty(FileInfo* fileInfo) {
     ftruncate(fileInfo->fd, 0);
 }
 
+std::vector<std::string> FileUtils::globFilePath(const std::string& path) {
+    std::vector<std::string> result;
+    glob_t globResult;
+    glob(path.c_str(), GLOB_TILDE, nullptr, &globResult);
+    for (auto i = 0u; i < globResult.gl_pathc; ++i) {
+        result.emplace_back(globResult.gl_pathv[i]);
+    }
+    return result;
+}
+
 } // namespace common
 } // namespace kuzu
diff --git a/src/include/binder/binder.h b/src/include/binder/binder.h
@@ -58,6 +58,8 @@ class Binder {
     /*** bind copy csv ***/
     std::unique_ptr<BoundStatement> bindCopy(const parser::Statement& statement);
 
+    std::vector<std::string> bindFilePaths(const std::vector<std::string>& filePaths);
+
     common::CSVReaderConfig bindParsingOptions(
         const std::unordered_map<std::string, std::unique_ptr<parser::ParsedExpression>>*
             parsingOptions);

diff --git a/src/include/common/file_utils.h b/src/include/common/file_utils.h
@@ -1,11 +1,13 @@
 #pragma once
 
 #include <fcntl.h>
+#include <glob.h>
 #include <sys/stat.h>
 #include <unistd.h>
 
 #include <filesystem>
 #include <string>
+#include <vector>
 
 namespace kuzu {
 namespace common {
@@ -54,6 +56,9 @@ class FileUtils {
         }
         return s.st_size;
     }
+
+    static std::vector<std::string> globFilePath(const std::string& path);
 };
+
 } // namespace common
 } // namespace kuzu
diff --git a/src/include/processor/operator/copy/copy.h b/src/include/processor/operator/copy/copy.h
@@ -31,8 +31,6 @@ class Copy : public PhysicalOperator {
     virtual uint64_t executeInternal(
         common::TaskScheduler* taskScheduler, ExecutionContext* executionContext) = 0;
 
-    virtual uint64_t getNumTuplesInTable() = 0;
-
     virtual bool allowCopyCSV() = 0;
 
 protected:

diff --git a/src/include/processor/operator/copy/copy_node.h b/src/include/processor/operator/copy/copy_node.h
@@ -25,8 +25,6 @@ class CopyNode : public Copy {
     uint64_t executeInternal(
         common::TaskScheduler* taskScheduler, ExecutionContext* executionContext) override;
 
-    uint64_t getNumTuplesInTable() override;
-
 private:
     inline bool allowCopyCSV() override {
         return nodesStatistics->getNodeStatisticsAndDeletedIDs(tableID)->getNumTuples() == 0;

diff --git a/src/include/processor/operator/copy/copy_rel.h b/src/include/processor/operator/copy/copy_rel.h
@@ -25,8 +25,6 @@ class CopyRel : public Copy {
     uint64_t executeInternal(
         common::TaskScheduler* taskScheduler, ExecutionContext* executionContext) override;
 
-    uint64_t getNumTuplesInTable() override;
-
 private:
     inline bool allowCopyCSV() override {
         return relsStatistics->getRelStatistics(tableID)->getNextRelOffset() == 0;

diff --git a/src/include/processor/operator/ddl/ddl.h b/src/include/processor/operator/ddl/ddl.h
@@ -12,7 +12,6 @@ class DDL : public PhysicalOperator {
         uint32_t id, const std::string& paramsString)
         : PhysicalOperator{operatorType, id, paramsString}, catalog{catalog}, outputPos{outputPos} {
     }
-    virtual ~DDL() override = default;
 
     inline bool isSource() const override { return true; }
 

diff --git a/src/processor/operator/copy/copy_node.cpp b/src/processor/operator/copy/copy_node.cpp
@@ -20,11 +20,5 @@ uint64_t CopyNode::executeInternal(
     return numNodesCopied;
 }
 
-uint64_t CopyNode::getNumTuplesInTable() {
-    // TODO(Ziyi): this chains looks weird. Fix when refactoring table statistics. Ditto in
-    // CopyRel.
-    return nodesStatistics->getReadOnlyVersion()->tableStatisticPerTable[tableID]->getNumTuples();
-}
-
 } // namespace processor
 } // namespace kuzu
diff --git a/src/processor/operator/copy/copy_rel.cpp b/src/processor/operator/copy/copy_rel.cpp
@@ -17,9 +17,5 @@ uint64_t CopyRel::executeInternal(
     return numRelsCopied;
 }
 
-uint64_t CopyRel::getNumTuplesInTable() {
-    return relsStatistics->getReadOnlyVersion()->tableStatisticPerTable[tableID]->getNumTuples();
-}
-
 } // namespace processor
 } // namespace kuzu
diff --git a/test/copy/copy_test.cpp b/test/copy/copy_test.cpp
@@ -54,6 +54,24 @@ class CopyNodeInitRelTablesTest : public BaseGraphTest {
 };
 
 class CopyMultipleFilesTest : public DBTest {
+
+public:
+    void validatePersonTableAfterCopying() {
+        auto result = conn->query("MATCH (p:person) RETURN p.ID");
+        ASSERT_TRUE(result->isSuccess());
+        auto groundTruth =
+            std::vector<std::string>{"1", "12", "15", "20", "21", "4", "5", "6", "7", "8", "9"};
+        ASSERT_EQ(TestHelper::convertResultToString(*result), groundTruth);
+    }
+
+    void validateKnowsTableAfterCopying() {
+        auto result = conn->query("MATCH (:person)-[e:knows]->(:person) RETURN e.weight");
+        ASSERT_TRUE(result->isSuccess());
+        auto groundTruth = std::vector<std::string>{"22", "25", "33", "41", "44", "79", "80", "85"};
+        ASSERT_EQ(TestHelper::convertResultToString(*result), groundTruth);
+    }
+
+private:
     std::string getInputDir() override {
         return TestHelper::appendKuzuRootPath("dataset/copy-multiple-files-test/");
     }
@@ -303,19 +321,25 @@ TEST_F(CopyMultipleFilesTest, CopyMultipleFilesTest) {
                 TestHelper::appendKuzuRootPath("dataset/copy-multiple-files-test/vPerson2.csv"),
                 TestHelper::appendKuzuRootPath("dataset/copy-multiple-files-test/vPerson3.csv")))
             ->isSuccess());
+    validatePersonTableAfterCopying();
     ASSERT_TRUE(
         conn->query(
                 StringUtils::string_format(R"(COPY knows FROM ["{}", "{}"])",
                     TestHelper::appendKuzuRootPath("dataset/copy-multiple-files-test/eKnows1.csv"),
                     TestHelper::appendKuzuRootPath("dataset/copy-multiple-files-test/eKnows2.csv")))
             ->isSuccess());
-    auto result = conn->query("MATCH (p:person) RETURN p.ID");
-    ASSERT_TRUE(result->isSuccess());
-    auto groundTruth =
-        std::vector<std::string>{"1", "12", "15", "20", "21", "4", "5", "6", "7", "8", "9"};
-    ASSERT_EQ(TestHelper::convertResultToString(*result), groundTruth);
-    result = conn->query("MATCH (:person)-[e:knows]->(:person) RETURN e.weight");
-    ASSERT_TRUE(result->isSuccess());
-    groundTruth = std::vector<std::string>{"22", "25", "33", "41", "44", "79", "80", "85"};
-    ASSERT_EQ(TestHelper::convertResultToString(*result), groundTruth);
+    validateKnowsTableAfterCopying();
+}
+
+TEST_F(CopyMultipleFilesTest, CopyFilesWithWildcardPattern) {
+    ASSERT_TRUE(conn->query(StringUtils::string_format(R"(COPY person FROM "{}")",
+                                TestHelper::appendKuzuRootPath(
+                                    "dataset/copy-multiple-files-test/vPerson?.csv")))
+                    ->isSuccess());
+    validatePersonTableAfterCopying();
+    ASSERT_TRUE(
+        conn->query(StringUtils::string_format(R"(COPY knows FROM glob("{}"))",
+                        TestHelper::appendKuzuRootPath("dataset/copy-multiple-files-test/eK*")))
+            ->isSuccess());
+    validateKnowsTableAfterCopying();
 }