PostgreSQL Adapter Project - Extending SQLSchemaManager
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It contains historical information.
Contents
Summary
- SQLSchemaManager is used in maintaining database schemas (DDL)
Tasks
| Task | Status | Test Status |
|---|---|---|
| Extend SQLSchemaManager to support PostgreSQL | DONE | DONE |
| Research and add Maximum column Precision | DONE | DONE |
| Figure out Data Type Mapping | DONE | DONE |
Implement analyzeTable
|
Ask NexJ, what this should do | |
Implement appendColumnType() method
|
DONE | DONE |
Implement appendConcatenate() method
|
DONE | DONE |
Implement appendPrint() method
|
DONE | DONE |
Implement appendUpgradeStepEnd() method
|
DONE | DONE |
Implement appendUpgradeStepStart() methodNOTE: Delimiter cannot be changed in Postgre Used begin; commit; block |
DONE | DONE |
Implement appendTSExtract() method
|
DONE | DONE |
Add appendTSField method *NOTE: It is used in appendTSExtract() method,and it is quite similar to the one in MySQL. (Suggest to NexJ to add it to the super class) |
DONE | DONE |
Implement appendTSIncrement() method
|
DONE | DONE |
Implement getCreateEtcScriptName() method
|
DONE | DONE |
Implement getDefaultIndexspace() method
|
DONE | DONE |
Implement getDefaultLongspace() method
|
DONE | DONE |
Implement getDefaultTablespace() method
|
DONE | DONE |
Implement getDropEtcScriptName() method
|
? | |
Implement getDynamicSQLAppender() method
|
DONE | DONE |
Implement getGUIDExpr() method
|
DONE | DONE |
Implement getNowExpr() method
|
DONE | DONE |
Implement getSeparator() method
|
DONE | DONE |
Implement getSetupEtcScriptName() method
|
DONE | DONE |
Override renameTable[1] (+ recreate functions)
|
DONE | DONE |
Override renameColumn[2]
|
DONE | DONE |
Override renameIndex[3]
|
DONE | DONE |
Override getIndexName()
|
DONE | DONE |
Override createIndex(Index) to add full text search
|
DONE | DONE |
Override dropTable(table) (+ drop functions)
|
DONE | DONE |
Port mysql_insert.sql script to postgresql_insert
|
DONE | DONE |
Add dropTriggers(columnName, table) to drop full-text triggers when column is dropped |
DONE | DONE |
Add dropTrigerFunctions(column) to drop full-text trigger functions when column or table is dropped |
DONE | DONE |
Task Details
Extend SQLSchemaManager to support PostgreSQL
Create a new class PostgreSQLSchemaManager by extending SQLSchemaManager and implementing all necessary abstract methods
Research and add Maximum column Precision
Following are the Maximum column precisions we might need to establish:
(All constants are defined in PostgreSQLAdapter class)
- DEFAULT_FETCH_SIZE
- MAX_CHAR_PRECISION
- MAX_VARCHAR_PRECISION
- MAX_BINARY_PRECISION
- MAX_VARBINARY_PRECISION
- MAX_REAL_PRECISION
- TIMESTAMP_FORMAT_SQL
- TIMESTAMP_FORMAT
Figure out Data Type Mapping
http://www.postgresql.org/docs/current/static/datatype.html
- Go over all data types offered in PostgreSQL
- Map types defined in
Primitiveclass
Implement appendColumnType() method
This method appends a table column type declaration to a string buffer.
- use logic and mapping to append required column data types to incoming string.
- Test it
Implement appendTSExtract() method
This method extracts a field from a timestamp. It uses SQLSubstReaser's enums.
- Research the extract function in the PostgreSQL
- Implement it in Adapter
- Test it
- NOTE: The logic to implement the extract function is similar to the one in MySQL Adapter. It could be a good idea to suggest to NexJ to add the
appendTSFieldmethod to the super class, so we are not repeating the code. (Can be done in the Optimization stage)
