LiquiBase - Passing Parameter From CommandLine Or Properties to Changeset XML

问题

I am trying to pass a parameter from my update command as well as the liquibase properties file to my changeset. For some reason, it does not recognise the placeholder as a parameter but parses it as a value.

This is how I invoke the changeLog (which runs successfully):

@echo off
call Liquibase --changeLogFile=myChangeLogFile.xml update -Dparamname=value

myChangeLogFile.xml:

<changeSet author="tobi" id="preMigration" runAlways="true">
    <executeCommand executable="C:\myBatFile.bat">
        <arg value="${liquibase.properties.Dparamname}"/>
        <arg value="${liquibase.properties.url}"/>
    </executeCommand>  
</changeSet>

The script does not recognise ${liquibase.properties.Dparamname} or ${liquibase.properties.url} as placeholders.

My Liquibase.properties file has the

url:jdbc:oracle:thin:@xyz:1521:ORCL

parameter set.

Any idea how I can access the properties or the command line parameters?

Thank you

I would appreciate your feedback.

Tobias

回答1:

Rather than using this in your changelog:

<changeSet author="tobi" id="preMigration" runAlways="true">
    <executeCommand executable="C:\myBatFile.bat">
        <arg value="${liquibase.properties.Dparamname}"/>
        <arg value="${liquibase.properties.url}"/>
    </executeCommand>  
</changeSet>

it should look more like this:

<changeSet author="tobi" id="preMigration" runAlways="true">
    <executeCommand executable="C:\myBatFile.bat">
        <arg value="${paramname}"/>
        <arg value="${url}"/>
    </executeCommand>  
</changeSet>

The -D on the command line is the standard java mechanism for setting system properties, but when accessing them you just use the property name. I am fairly certain that you don't need to use the liquibase.properties prefix either.

回答2:

I have a requirement like calling a .bat file with parameters from liquibase upgrade scripts. Also also this should run only one time like change set.

Thanks, Jagadeesh

来源：https://stackoverflow.com/questions/42368969/liquibase-passing-parameter-from-commandline-or-properties-to-changeset-xml

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liquibase