Function writeDropPhase

backend/plugin/schema/pg/metadata_migration.go:209–269

(out *strings.Builder, diff *schema.MetadataDiff)

}

func writeDropPhase(out *strings.Builder, diff *schema.MetadataDiff) error {
	for _, eventTriggerDiff := range diff.EventTriggerChanges {
		if eventTriggerDiff.Action == schema.MetadataDiffActionDrop || eventTriggerDiff.Action == schema.MetadataDiffActionAlter {
			if err := writeEventTriggerDiff(out, eventTriggerDiff); err != nil {
				return err
			}
		}
	}

	if err := writeDropTableTriggers(out, diff); err != nil {
		return err
	}
	if err := writeDropAlterTableForeignKeys(out, diff); err != nil {
		return err
	}
	if err := writeDropTableForeignKeysForTableDrops(out, diff); err != nil {
		return err
	}
	if err := writeDropSequenceOwnershipBeforeTableDrops(out, diff); err != nil {
		return err
	}
	if err := writeDropDependentObjects(out, diff); err != nil {
		return err
	}
	if err := writeDropAlterTableObjects(out, diff); err != nil {
		return err
	}

	for _, sequenceDiff := range diff.SequenceChanges {
		if sequenceDiff.Action == schema.MetadataDiffActionDrop {
			if isSequenceOwnedByDroppedTable(diff, sequenceDiff.SchemaName, sequenceDiff.OldSequence) {
				continue
			}
			if err := writeSequenceDiff(out, sequenceDiff); err != nil {
				return err
			}
		}
	}
	for _, enumDiff := range diff.EnumTypeChanges {
		if enumDiff.Action == schema.MetadataDiffActionDrop {
			if err := writeEnumTypeDiff(out, enumDiff); err != nil {
				return err
			}
		}
	}
	for _, extensionDiff := range diff.ExtensionChanges {
		if extensionDiff.Action == schema.MetadataDiffActionDrop {
			if err := writeExtensionDiff(out, extensionDiff); err != nil {
				return err
			}
		}
	}
	for _, schemaDiff := range diff.SchemaChanges {
		if schemaDiff.Action == schema.MetadataDiffActionDrop {
			if err := writeSchemaDiff(out, schemaDiff); err != nil {
				return err
			}
		}