Fixed bug with compressed dictionaries

src/common/dbpa_local_test.cpp

@@ -49,6 +49,30 @@ TEST_F(LocalDataBatchProtectionAgentTest, SuccessfulEncryption) {
     EXPECT_GT(result->size(), 0);
 }
 
+TEST_F(LocalDataBatchProtectionAgentTest, SuccessfulEncryptionCompressedDictionary) {
+    LocalDataBatchProtectionAgent agent;
+
+    std::map<std::string, std::string> connection_config;
+    std::string app_context = R"({"user_id": "test_user"})";
+
+    EXPECT_NO_THROW(agent.init("test_column", connection_config, app_context, "test_key", 
+                               Type::BYTE_ARRAY, std::nullopt, CompressionCodec::GZIP, std::nullopt));
+
+    // GZIP compressed data for strings "apple" and "banana"
+    std::vector<uint8_t> test_data_gzip = {
+        0x1F, 0x8B, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xFF,
+        0x63, 0x65, 0x60, 0x60, 0x48, 0x2C, 0x28, 0xC8, 0x49, 0x65,
+        0x03, 0x32, 0x92, 0x12, 0xF3, 0x80, 0x10, 0x00, 0xC7, 0xB8,
+        0x50, 0xFC, 0x13, 0x00, 0x00, 0x00
+    };
+    std::map<std::string, std::string> encoding_attributes = {{"page_encoding", "PLAIN"}, {"page_type", "DICTIONARY_PAGE"}};
+    auto result = agent.Encrypt(test_data_gzip, encoding_attributes);
+
+    ASSERT_NE(result, nullptr);
+    EXPECT_TRUE(result->success());
+    EXPECT_GT(result->size(), 0);
+}
+
 // Test successful initialization and decryption
 TEST_F(LocalDataBatchProtectionAgentTest, SuccessfulDecryption) {
     LocalDataBatchProtectionAgent agent;

src/server/encryption_sequencer.cpp

@@ -123,8 +123,7 @@ LevelAndValueBytes DataBatchEncryptionSequencer::DecompressAndSplit(
     }
 
     if (page_type == "DICTIONARY_PAGE") {
-        // TODO: Check whether dictionary pages can be compressed.
-        result.value_bytes = plaintext;
+        result.value_bytes = Decompress(plaintext);
         result.level_bytes = std::vector<uint8_t>();
         return result;
     }