PostgreSQL Adapter Project - Extending SQLSchemaManager
PostgreSQL Adapter for NexJ - Extending SQL Schema Manager
- SQLSchemaManager is used in maintaining database schemas (DDL)
Contents
Task Summary
| Task | Status | Test Status |
|---|---|---|
| Extend SQLSchemaManager to support PostgreSQL | DONE | DONE |
| Research and add Maximum column Precision | DONE | |
| Figure out Data Type Mapping | DONE | |
Implement appendColumnType() method
|
DONE | |
Implement appendConcatenate() method
|
DONE | |
Implement appendPrint() method
|
DONE | |
Implement appendUpgradeStepEnd() method
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Implement appendUpgradeStepStart() method
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Implement appendTSExtract() method
|
DONE | |
Add appendTSField method *NOTE: This method 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 | |
Implement appendTSIncrement() method
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Implement getCreateEtcScriptName() method
|
DONE | |
Implement getDefaultIndexspace() method
|
DONE | |
Implement getDefaultLongspace() method
|
DONE | DONE |
Implement getDefaultTablespace() method
|
DONE | |
Implement getDropEtcScriptName() method
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Implement getDynamicSQLAppender() method
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Implement getGUIDExpr() method
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Implement getNowExpr() method
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DONE | |
Implement getSeparator() method
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DONE | |
Implement getSetupEtcScriptName() method
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DONE | |
Override renameTable[1]
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Override renameColumn[2]
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Override renameIndex[3]
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Override getIndexName()
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DONE |
Task Details
Extend SQLSchemaManager to support PostgreSQL
Create a new class PostgreSQLSchemaManager by extending SQLSchemaManager and implementing all necessary abstract classes
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
