Ant `rollbackFutureDatabase`

Outputs SQL for changes that have not yet been executed.

Syntax

<liquibase:rollbackFutureDatabase
    changeLogFile="/path/to/changelog.xml">
    <liquibase:database
        driver="${db.driver}"
        url="${db.url}"
        user="${db.user}"
        password="${db.password}"/>
</liquibase:rollbackFutureDatabase>

A basic example of rollback future task.

<liquibase:rollbackFutureDatabase
    outputFile="/path/to/rollback-future.sql"
    changeLogFile="/path/to/changelog.xml">
    <liquibase:database
        driver="${dv.driver}"
        url="${db.url}"
        user="${db.user}"
        password="${db.password}"/>
</liquibase:rollbackFutureDatabase>

Write the rollback future SQL to the output file.

Parameters

Attribute	Description	Required
`changeLogFile`	The changelog file for Liquibase to use.	Yes
`contexts`	A comma-separated list of Contexts to execute. If not specified, all contexts are run.	No
`outputFile`	If specified, Liquibase will save the update SQL statements to the specified file rather than executing them in the database.	No
`outputEncoding`	The character encoding to use when writing to output file.	No; defaults to system encoding.
`promptOnNonLocalDatabase`	If set to true, a dialog box with warn you if you attempt to run the Liquibase against a database that is not on localhost.	No; default is false.
`classpathref`	A reference to the classpath used to run the task with.	No
`databaseref`	A reference to the database that Liquibase will connect to.	Yes, unless a nested `<database>` element is present.
`driver`	Deprecated: Name of the database driver to connect with.	No
`url`	Deprecated: Use `<database>`'s url attribute instead. The database URL.	No
`username`	Deprecated: The database username to connect with.	No
`password`	Deprecated: The password to use when connecting to the database.	No
`defaultSchemaName`	Deprecated: Schema to use by default for managed database objects and Liquibase control tables.	No
`currentDateTimeFunction`	Deprecated: Overrides current date time function used in SQL. Useful for unsupported databases.	No
`databaseChangeLogTableName`	Deprecated: Overrides the name of the DATABASECHANGELOG table to use.	No
`databaseChangeLogLockTableName`	Deprecated: Overrides the name of the DATABASECHANGELOGLOCK table to use.	No
`logLevel`	Deprecated: Specifies one of the following logging levels: debug, info, warning, severe, off. The default level is info.	No

Parameters specified as nested elements

Attribute	Description	Required
`classpath`	The classpath used to run the task.	Optional
`database`	See database data type for more information.	Required unless a `databaseref`attribute is given.
`changelogparameters`	See Substituting Properties in Changelogs for more information.	Optional