PostgresPkGenerator (cayenne-doc: Cayenne Documentation 4.2 API)

java.lang.Object
- org.apache.cayenne.dba.JdbcPkGenerator
- - org.apache.cayenne.dba.oracle.OraclePkGenerator
  - - org.apache.cayenne.dba.postgres.PostgresPkGenerator

All Implemented Interfaces:

PkGenerator
```
public class PostgresPkGenerator
extends OraclePkGenerator
```
Default PK generator for PostgreSQL that uses sequences for PK generation.

Field Summary
- Fields inherited from class org.apache.cayenne.dba.JdbcPkGenerator
  adapter, DEFAULT_PK_CACHE_SIZE, pkCache, pkCacheSize, pkStartValue

Constructor Summary

Constructors
Modifier Constructor Description

PostgresPkGenerator()
Used by DI

protected PostgresPkGenerator(JdbcAdapter adapter)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected String`	`createSequenceString(DbEntity ent)`
`protected String`	`selectAllSequencesQuery()`
`protected String`	`selectNextValQuery(String sequenceName)`

Methods inherited from class org.apache.cayenne.dba.oracle.OraclePkGenerator
createAutoPk, createAutoPkStatements, dropAutoPk, dropAutoPkStatements, dropSequenceString, getExistingSequences, getSequencePrefix, longPkFromDatabase, pkCacheSize, sequenceName

Methods inherited from class org.apache.cayenne.dba.JdbcPkGenerator
autoPkTableExists, dropAutoPkString, generatePk, getAdapter, getPkCacheSize, pkCreateString, pkDeleteString, pkSelectString, pkTableCreateString, pkUpdateString, reset, runUpdate, setAdapter, setPkCacheSize

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - PostgresPkGenerator
```
public PostgresPkGenerator()
```
    Used by DI
    
    Since:
    
    4.1
  - PostgresPkGenerator
```
protected PostgresPkGenerator(JdbcAdapter adapter)
```
- Method Detail
  - createSequenceString
```
protected String createSequenceString(DbEntity ent)
```
    Overrides:
    
    createSequenceString in class OraclePkGenerator
  - selectNextValQuery
```
protected String selectNextValQuery(String sequenceName)
```
    Overrides:
    
    selectNextValQuery in class OraclePkGenerator
  - selectAllSequencesQuery
```
protected String selectAllSequencesQuery()
```
    Overrides:
    
    selectAllSequencesQuery in class OraclePkGenerator