Create Vitruvio Patch

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You are creating a new Liquibase database migration patch inside a Vitruvio repository. Follow these steps in order.

Step 1 — Confirm you are inside a Vitruvio repo

ls vitruvio.json 2>/dev/null && echo "OK" || echo "NOT_A_VITRUVIO_REPO"

If NOT_A_VITRUVIO_REPO, stop and tell the user to cd into the correct repo.

Step 2 — Inspect existing patches to determine the next changeset ID

find patches/ -name "*.xml" | xargs grep -h 'id="[0-9]' 2>/dev/null | grep -oP 'id="\K[0-9]+' | sort -n | tail -1

The next ID = last found ID + 1. If no patches exist yet, start at 1.

Also check whether oracle and postgresql subdirectories already exist:

ls patches/

Step 3 — Collect migration details

Ask the user (in a single message, only ask what is missing):

What this migration does — describe the change (e.g. "add column STATUS to table PEDIDO", "create table AUDIT_LOG", "insert config rows").
Author — Vitruvio username (e.g. joao.felix). Use git config user.name if unsure.
Module key — used in the filename (e.g. GO, checklist, faturamento). Default: the repo's metadata.key from vitruvio.json.

Step 4 — Create the patch files

Both oracle/ and postgresql/ files must always be created and kept in sync.

Filename convention: {YYYYMMDDHHmm}_{MODULE_KEY}.xml (e.g. 202506011430_checklist.xml). Use the current date and time.

mkdir -p patches/oracle patches/postgresql

Absolute rules

Append-only. Never edit or delete existing <changeSet> entries — modifying a checksum that Liquibase already recorded breaks deployment.
Unique numeric IDs. Each <changeSet id="..."> must have a unique ID within the repo. Increment from the last found.
Always use <preConditions onFail="MARK_RAN"> — every changeset must be idempotent and safe to re-run on any DB state.
Oracle ≠ PostgreSQL. Write each file for its target DB — data types, sequences, and quoting differ. Never copy-paste blindly.
One logical change per changeset — don't batch unrelated changes into a single <changeSet>.

File skeleton

<?xml version="1.0" encoding="UTF-8"?>
<databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
  xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog-ext http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd
                      http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.6.xsd">

  <changeSet author="<author>" id="<next-id>" objectQuotingStrategy="LEGACY">
    <preConditions onError="WARN" onFail="MARK_RAN" onSqlOutput="IGNORE">
      <!-- guard appropriate for the operation — see examples below -->
    </preConditions>
    <sql endDelimiter=";" splitStatements="true" stripComments="false">
      -- SQL for this DB dialect
    </sql>
  </changeSet>

</databaseChangeLog>

preConditions reference

Operation	Guard to use
CREATE TABLE	`<not><tableExists tableName="MY_TABLE"/></not>`
ADD COLUMN	`<not><columnExists tableName="MY_TABLE" columnName="MY_COL"/></not>`
CREATE INDEX	`<not><indexExists indexName="IDX_NAME"/></not>`
ADD CONSTRAINT / FK	`<not><foreignKeyConstraintExists foreignKeyName="FK_NAME"/></not>`
INSERT row (by PK)	`<sqlCheck expectedResult="0">SELECT COUNT(*) FROM MY_TABLE WHERE ID = 1</sqlCheck>`
DROP TABLE	`<tableExists tableName="MY_TABLE"/>`
DROP COLUMN	`<columnExists tableName="MY_TABLE" columnName="MY_COL"/>`

Oracle vs PostgreSQL differences to watch

	Oracle	PostgreSQL
Auto-increment	Separate `CREATE SEQUENCE` + trigger or `DEFAULT seq.NEXTVAL`	`SERIAL` or `GENERATED ALWAYS AS IDENTITY`
String type	`VARCHAR2(n)`	`VARCHAR(n)`
Boolean	`NUMBER(1)`	`BOOLEAN`
Date/time	`DATE`, `TIMESTAMP`	`DATE`, `TIMESTAMP`
Current timestamp	`SYSDATE`	`CURRENT_TIMESTAMP`
Quoting	`LEGACY` strategy (unquoted)	Same

Step 5 — Check vitruvio.json patches registration

The patches directory only needs to be registered once. Check if it is already there:

grep -A2 '"patches"' vitruvio.json

If not registered, add to vitruvio.json:

"patches": "patches/"

Step 6 — Report

Tell the user:

Files created: patches/oracle/<filename>.xml and patches/postgresql/<filename>.xml
Changeset IDs used
Summary of what each changeset does
Reminder: never edit existing changesets once committed — add new ones instead

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