de.ipcon.schema.generators

Class PostgreSQLInheritanceManager

java.lang.Object

de.ipcon.schema.generators.PostgreSQLInheritanceManager

public class PostgreSQLInheritanceManager
extends java.lang.Object

Manager for handling PostgreSQL native table inheritance (INHERITS clause).

MyTISM maps Object-Oriented (OO) entity hierarchies directly to PostgreSQL's table inheritance feature. This class evaluates the StructuredEntityI.getBaseEntity() relations and compares them against the physical pg_inherits catalog.

Responsibilities:

• Detecting missing parent tables and attaching them (INHERIT).
• Detecting and detaching incorrect or multiple parent tables (NO INHERIT).
• Ensuring that child tables contain all necessary columns of their parents before establishing the inheritance link to prevent database-level constraint violations.

Constructor Summary

Constructors

Constructor and Description
PostgreSQLInheritanceManager(PostgreSQL pg, PostgreSQLMigrationContext ctx, PostgreSQLTableMigrator tblMgr, PostgreSQLCatalogInspector inspector)

Method Summary

Modifier and Type	Method and Description
boolean	checkInheritanceForEntity(CBOEntityI entity, boolean disconnectOnly) Recursively verifies and corrects the PostgreSQL table inheritance structure (INHERITS) to match the MyTISM entity hierarchy.
boolean	removeInheritance(java.lang.String tableName, java.lang.String parentTableName) Detaches a table from an incorrect or outdated parent table.

Methods inherited from class java.lang.Object

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

Constructor Detail

PostgreSQLInheritanceManager

public PostgreSQLInheritanceManager(PostgreSQL pg,
                                    PostgreSQLMigrationContext ctx,
                                    PostgreSQLTableMigrator tblMgr,
                                    PostgreSQLCatalogInspector inspector)

Method Detail

checkInheritanceForEntity

public boolean checkInheritanceForEntity(CBOEntityI entity,
                                         boolean disconnectOnly)

Recursively verifies and corrects the PostgreSQL table inheritance structure (INHERITS) to match the MyTISM entity hierarchy.

Parameters:

entity - The entity to evaluate.

disconnectOnly - If true, only removes faulty inheritances without establishing new ones.

Returns:

true if changes were applied to the inheritance structure.

removeInheritance

public boolean removeInheritance(java.lang.String tableName,
                                 java.lang.String parentTableName)

Detaches a table from an incorrect or outdated parent table.

Parameters:

tableName - The table being altered.

parentTableName - The table it is detached from.

Returns:

Always returns true, indicating a change was made.