Package com.onec.schema

Class SchemaMigrator

java.lang.Object

com.onec.schema.SchemaMigrator

public class SchemaMigrator
extends Object

Additive-only schema evolution: adds columns that exist in the metadata model but not in the live database. Never renames, retypes or drops anything — for that, see SchemaUpgrader, which subsumes this as part of its plan.

A column declared required is added nullable, backfilled with a neutral value, and only then constrained NOT NULL — adding it constrained in one step would fail on any table that already has rows (see DdlRenderer.addColumn(java.lang.String, com.onec.schema.ColumnModel)).

Constructor Summary

Constructors

Constructor	Description
SchemaMigrator(MetadataRegistry registry)

Method Summary

Modifier and Type	Method	Description
void	executeAdditive(org.jdbi.v3.core.Jdbi jdbi)
List<String>	generateAdditiveDDL(org.jdbi.v3.core.Jdbi jdbi)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SchemaMigrator

public SchemaMigrator(MetadataRegistry registry)

Method Details

generateAdditiveDDL

public List<String> generateAdditiveDDL(org.jdbi.v3.core.Jdbi jdbi)

executeAdditive

public void executeAdditive(org.jdbi.v3.core.Jdbi jdbi)