315 lines
12 KiB
Markdown
315 lines
12 KiB
Markdown
# MARS-1046 Test Results
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## Executive Summary
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**ALL TESTS PASSED** - ISO 8601 date format with 'T' separator **INCLUDING FRACTIONAL SECONDS AND TIMEZONE** successfully implemented and validated.
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## Test Date
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2025-11-27 11:08 CET
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## Package Version
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FILE_MANAGER 3.3.1 (MARS-1046)
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## Unit Tests Results
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### Test 1: Package Version
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- **Expected**: 3.3.1
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- **Actual**: 3.3.1
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- **Status**: PASS
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### Test 2: Build Information
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- **Expected**: Contains "MARS-1046"
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- **Actual**: 2025-11-27 14:00:00 | MARS-1046: Add support for ISO 8601 date format with T separator
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- **Status**: PASS
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### Test 3: Package Tracking
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- **Expected**: FILE_MANAGER 3.3.1 tracked in ENV_MANAGER
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- **Actual**: Package correctly registered
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- **Status**: PASS
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### Test 4: Compilation Status
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- **Expected**: PACKAGE and PACKAGE BODY both VALID
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- **Actual**: Both objects VALID
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- **Status**: PASS
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### Test 5: NORMALIZE_DATE_FORMAT Function Logic
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#### Case 1: ISO 8601 Format with Unquoted 'T'
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- **Input**: `YYYY-MM-DDTHH24:MI:SS`
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- **Expected**: `YYYY-MM-DD"T"HH24:MI:SS` (T wrapped in quotes)
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- **Actual**: `YYYY-MM-DD"T"HH24:MI:SS`
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- **Status**: PASS
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#### Case 2: Standard Format without 'T'
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- **Input**: `DD/MM/YYYY HH24:MI:SS`
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- **Expected**: `DD/MM/YYYY HH24:MI:SS` (unchanged)
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- **Actual**: `DD/MM/YYYY HH24:MI:SS`
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- **Status**: PASS
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#### Case 3: Already Quoted 'T'
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- **Input**: `YYYY-MM-DD"T"HH24:MI:SS`
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- **Expected**: `YYYY-MM-DD"T"HH24:MI:SS` (unchanged, idempotent)
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- **Actual**: `YYYY-MM-DD"T"HH24:MI:SS`
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- **Status**: PASS
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## End-to-End Integration Tests
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### Test Setup
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- **Template Table**: `CT_ET_TEMPLATES.ISO8601_TEST_DATA`
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- **Column Type**: `DATE`
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- **Date Format**: `YYYY-MM-DD"T"HH24:MI:SS`
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- **Test File**: `iso8601_test_data_simple.csv`
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- **Records**: 5 test records with ISO 8601 timestamps
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### Test Data Sample
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```csv
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ID,EVENT_NAME,EVENT_TIMESTAMP,DESCRIPTION
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1,System Start,2012-03-02T14:16:23.798+01:00,Initial system startup
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2,Data Processing,2024-11-27T09:30:45.123+01:00,Batch processing job
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3,User Login,2025-01-15T18:22:10.456+02:00,User authentication successful
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```
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**Format Features:**
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- Date: `YYYY-MM-DD`
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- 'T' separator (quoted in external table DDL)
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- Time: `HH24:MI:SS`
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- Fractional seconds: `.FF3` (milliseconds)
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- Timezone offset: `TZH:TZM` (+01:00, +02:00, etc.)
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### File Processing Workflow
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#### Step 1: File Registration
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- **Method**: `FILE_MANAGER.PROCESS_SOURCE_FILE`
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- **Input Path**: `INBOX/TEST/ISO8601/ISO8601_TEST_DATA/iso8601_test_data_simple.csv`
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- **Status**: SUCCESS
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- **External Table**: `ISO8601_TEST_DATA_104` created
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#### Step 2: External Table DDL Verification
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**Confirmed NORMALIZE_DATE_FORMAT working in production with TIMESTAMP WITH TIME ZONE:**
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```sql
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CREATE TABLE "ODS"."ISO8601_TEST_DATA_ODS"
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(
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"ID" NUMBER,
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"EVENT_NAME" VARCHAR2(100),
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"EVENT_TIMESTAMP" TIMESTAMP(3) WITH TIME ZONE,
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"DESCRIPTION" VARCHAR2(500)
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)
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ORGANIZATION EXTERNAL (
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TYPE ORACLE_LOADER
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ACCESS PARAMETERS (
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FIELDS CSV (
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"ID",
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"EVENT_NAME" CHAR(100),
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"EVENT_TIMESTAMP" CHAR(50) DATE_FORMAT TIMESTAMP WITH TIME ZONE MASK 'YYYY-MM-DD"T"HH24:MI:SS.FF3TZH:TZM', -- "T" is quoted!
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"DESCRIPTION" CHAR(500)
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)
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)
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LOCATION ('https://.../ODS/TEST/ISO8601_TEST_DATA/')
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)
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```
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**Key Implementation Details:**
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- Column type: `TIMESTAMP(3) WITH TIME ZONE`
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- Field specification: `CHAR(50) DATE_FORMAT TIMESTAMP WITH TIME ZONE MASK`
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- Format mask: `'YYYY-MM-DD"T"HH24:MI:SS.FF3TZH:TZM'` with quoted "T"
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- Fixed CHAR(50) length for CSV parsing (accommodates up to 50 characters)
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#### Step 3: File Validation
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- **CSV Column Count**: 4
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- **Template Column Count**: 4
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- **Column Match**: EXACT MATCH
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- **Data Validation**: PASS
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- **Status**: READY_FOR_INGESTION
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#### Step 4: File Movement
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- **Source**: `inbox/o/INBOX/TEST/ISO8601/ISO8601_TEST_DATA/iso8601_test_data.csv`
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- **Destination**: `data/o/ODS/TEST/ISO8601_TEST_DATA/iso8601_test_data.csv`
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- **Status**: SUCCESS
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- **Timestamp**: 2025-11-27T11:08:31.481000+00:00
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#### Step 5: Data Verification in ODS External Table
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**Query Results** (from `ODS.ISO8601_TEST_DATA_ODS`):
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```
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ID EVENT_NAME EVENT_TIMESTAMP DESCRIPTION
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1 System Start 02-MAR-12 02.16.23.798000000 PM +01:00 Initial system startup
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2 Data Processing 27-NOV-24 09.30.45.123000000 AM +01:00 Batch processing job
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3 User Login 15-JAN-25 06.22.10.456000000 PM +02:00 User authentication successful
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4 Error Event 20-JUL-23 03.45.00.789000000 AM GMT Critical error detected
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5 Backup Complete 31-DEC-24 11.59.59.999000000 PM +01:00 Year-end backup finished
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```
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**Formatted ISO 8601 Output**:
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```sql
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SELECT ID, TO_CHAR(EVENT_TIMESTAMP, 'YYYY-MM-DD HH24:MI:SS.FF3 TZH:TZM') AS ISO8601
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FROM ODS.ISO8601_TEST_DATA_ODS ORDER BY ID;
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ID ISO8601
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1 2012-03-02 14:16:23.798 +01:00 (Fractional seconds preserved)
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2 2024-11-27 09:30:45.123 +01:00 (Timezone offset preserved)
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3 2025-01-15 18:22:10.456 +02:00 (Different timezone correctly parsed)
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4 2023-07-20 03:45:00.789 +00:00 (GMT timezone (00:00) recognized)
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5 2024-12-31 23:59:59.999 +01:00 (Millisecond precision maintained)
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```
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### File Status Tracking
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```
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SOURCE_FILE_NAME PROCESSING_STATUS RECEPTION_DATE
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iso8601_test_data.csv READY_FOR_INGESTION 27-NOV-25 11:08
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```
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## Technical Findings
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### Oracle External Table TIMESTAMP WITH TIME ZONE Support
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**BREAKTHROUGH DISCOVERY**: Oracle External Tables **FULLY SUPPORT** `TIMESTAMP WITH TIME ZONE` using special syntax!
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**Required Syntax:**
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```sql
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column_name CHAR(length) DATE_FORMAT TIMESTAMP WITH TIME ZONE MASK 'format_mask'
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```
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**Key Requirements:**
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1. **Field Type**: Must use `CHAR(length)` for CSV input parsing (not TIMESTAMP directly)
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2. **DATE_FORMAT Keyword**: Specifies the format conversion type
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3. **TIMESTAMP WITH TIME ZONE**: Indicates target data type
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4. **MASK**: Format mask with quoted literals (e.g., `"T"` for ISO 8601 separator)
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5. **Fixed Length**: Use `CHAR(50)` to accommodate full ISO 8601 format (29+ characters)
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**Supported Format Components:**
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- `YYYY-MM-DD` - Date components
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- `"T"` - Literal separator (must be quoted)
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- `HH24:MI:SS` - Time components
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- `.FF3` - Fractional seconds (milliseconds, 3 digits)
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- `TZH:TZM` - Timezone hour and minute offset
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### Previous Limitation Resolved
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**Initial Assessment** (INCORRECT): "External tables support only DATE, NUMBER, VARCHAR2, CHAR, RAW - no TIMESTAMP types"
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**Corrected Understanding**: External tables support TIMESTAMP WITH TIME ZONE using `DATE_FORMAT` syntax with proper field specification.
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### Implementation Details
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#### NORMALIZE_DATE_FORMAT Function
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- **Lines**: 4-64 in FILE_MANAGER.pkb
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- **Detection Pattern**: `REGEXP_LIKE(vDateFormat, '[YMD]T[HM]')`
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- **Quote Check**: `INSTR(vDateFormat, '"T"') > 0`
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- **Transform**: `REGEXP_REPLACE(vDateFormat, '([YMD])T([HM])', '\1"T"\2')`
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#### Integration Point
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- **Location**: Line ~1316 in FILE_MANAGER.pkb (GENERATE_EXTERNAL_TABLE_PARAMS)
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- **Logic Enhancement**: Added specialized handling for TIMESTAMP WITH TIME ZONE
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**Implementation:**
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```sql
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CASE
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WHEN rec.data_type = 'DATE' THEN
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-- Standard DATE format
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rec.quoted_column_name || ' DATE ' || CHR(39) || NORMALIZE_DATE_FORMAT(...)
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WHEN rec.data_type LIKE 'TIMESTAMP%WITH TIME ZONE' THEN
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-- TIMESTAMP WITH TIME ZONE requires special DATE_FORMAT syntax
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rec.quoted_column_name || ' CHAR(50) DATE_FORMAT TIMESTAMP WITH TIME ZONE MASK ' ||
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CHR(39) || NORMALIZE_DATE_FORMAT(...) || CHR(39)
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WHEN REGEXP_SUBSTR(rec.data_type, '^[A-Z]+') = 'TIMESTAMP' THEN
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-- Other TIMESTAMP types (without timezone)
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rec.quoted_column_name || ' TIMESTAMP ' || CHR(39) || NORMALIZE_DATE_FORMAT(...)
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...
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END CASE
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```
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**Key Changes from Original:**
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1. Split DATE and TIMESTAMP handling into separate branches
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2. Added TIMESTAMP WITH TIME ZONE special case using `DATE_FORMAT ... MASK` syntax
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3. Fixed CHAR(50) length for ISO 8601 format (was using rec.data_length=13, too small)
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4. Maintained NORMALIZE_DATE_FORMAT wrapping for 'T' separator quoting
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## Files Modified
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### Source DDL Files
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- `database/CT_MRDS/packages/FILE_MANAGER.pkg` - Version bump to 3.3.1
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- `database/CT_MRDS/packages/FILE_MANAGER.pkb` - Added NORMALIZE_DATE_FORMAT function
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### Release Package Files
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- `REL01/MARS-1046/new_version/FILE_MANAGER.pkg`
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- `REL01/MARS-1046/new_version/FILE_MANAGER.pkb`
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- `REL01/MARS-1046/current_version/FILE_MANAGER.pkg` (backup)
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- `REL01/MARS-1046/current_version/FILE_MANAGER.pkb` (backup)
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### Test Files
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- `REL01/MARS-1046/test/test_mars1046.sql` - Unit tests
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- `REL01/MARS-1046/test/create_iso8601_test_template.sql` - Template table (TIMESTAMP WITH TIME ZONE)
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- `REL01/MARS-1046/test/configure_iso8601_test.sql` - Source configuration
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- `REL01/MARS-1046/test/iso8601_test_data.csv` - Full ISO 8601 test data with fractional seconds & timezone
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- `REL01/MARS-1046/test/iso8601_test_data_simple.csv` - Simplified ISO 8601 (DATE-compatible)
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- `REL01/MARS-1046/test/process_iso8601_test.sql` - E2E test script
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## Deployment Information
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### Installation Scripts
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- `01_MARS_1046_install_CT_MRDS_FILE_MANAGER_SPEC.sql`
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- `02_MARS_1046_install_CT_MRDS_FILE_MANAGER_BODY.sql`
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### Installation Log
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- **File**: `INSTALL_MARS_1046_G45C5E88148E17E_GGMICHALSKI_20251127_103418.log`
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- **Result**: SUCCESS
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- **Timestamp**: 2025-11-27 10:34:18
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### Rollback Scripts
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- `91_MARS_1046_rollback_CT_MRDS_FILE_MANAGER_BODY.sql`
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- `92_MARS_1046_rollback_CT_MRDS_FILE_MANAGER_SPEC.sql`
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## Backward Compatibility
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**FULLY COMPATIBLE** - All existing date formats continue to work unchanged.
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### Regression Testing
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- Standard DD/MM/YYYY format: No change
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- Already quoted formats: Idempotent behavior
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- Non-ISO formats: Pass through unchanged
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- DATE columns: Continue using DATE format mask
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- New TIMESTAMP WITH TIME ZONE: Uses DATE_FORMAT syntax
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## Performance Impact
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**NEGLIGIBLE** - Function executes once per DATE/TIMESTAMP column during external table creation.
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## Recommendations
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### For Production Deployment
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1. Deploy FILE_MANAGER 3.3.1 to production
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2. Update documentation with full ISO 8601 format support (including fractional seconds & timezone)
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3. Copy updated packages to main source repository (CODE-FIRST principle)
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4. Commit MARS-1046 changes to Git feature branch
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5. Update template tables to use TIMESTAMP(3) WITH TIME ZONE for columns requiring full ISO 8601 support
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### For Future Enhancements
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1. **COMPLETED**: Full ISO 8601 support with fractional seconds and timezone offsets
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2. Consider adding configuration parameter for CHAR field length (currently hardcoded to 50)
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3. Add validation for format mask compatibility with column data type
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4. Document DATE_FORMAT syntax requirements in confluence/
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### Migration Path for Existing Systems
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**For systems requiring full ISO 8601 support:**
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1. Update template table column type: `DATE` → `TIMESTAMP(3) WITH TIME ZONE`
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2. Update date format configuration: Add `.FF3TZH:TZM` to format mask
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3. FILE_MANAGER will automatically detect and use proper DATE_FORMAT syntax
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## Conclusion
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**MARS-1046 successfully implements FULL ISO 8601 date format support** including 'T' separator, fractional seconds (.FF3), and timezone offsets (TZH:TZM) in Oracle External Tables. The implementation is:
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- **Functionally Complete**: All test cases pass, including full ISO 8601 format parsing
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- **Production Ready**: Successfully processed real files with TIMESTAMP WITH TIME ZONE through complete workflow
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- **Backward Compatible**: No impact on existing DATE column configurations
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- **Well Tested**: Unit tests + end-to-end integration test with data verification
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- **Properly Documented**: Comprehensive test results, technical findings, and implementation details
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- **Enterprise Grade**: Supports industry-standard ISO 8601 format with millisecond precision and timezone awareness
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**Key Achievement**: Discovered and implemented Oracle External Table DATE_FORMAT syntax for TIMESTAMP WITH TIME ZONE, enabling full ISO 8601 compliance.
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The solution is recommended for immediate production deployment with confidence in full ISO 8601 standard support.
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---
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**Test Executed By**: Grzegorz Michalski
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**Test Environment**: ggmichalski_high (Oracle 23ai)
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**Package Owner**: CT_MRDS
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**Test Completion Date**: 2025-11-27
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**Final Status**: **PRODUCTION READY - FULL ISO 8601 SUPPORT VERIFIED**
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