Poll

Placeholders

Description

Placeholders to replace in SQL migrations.

For example to replace a placeholder named key1 with the value value1, you can set flyway.placeholders.key1=value1. Flyway will take the key1 part, along with the placeholder prefix and the placeholder suffix construct a placeholder replacement, which by default would look like ${key1}. Then in your SQL migrations and instances of this will be replaced with value1.

Placeholder matching is case insensitive, so a placeholder of flyway.placeholders.key1 will match ${key1} and ${KEY1}.

Usage

Commandline

./flyway -placeholders.key1=value1 -placeholders.key2=value2 info

Configuration File

flyway.placeholders.key1=value1
flyway.placeholders.key2=value2

Environment Variable

FLYWAY_PLACEHOLDERS_KEY1=value1
FLYWAY_PLACEHOLDERS_KEY2=value2

API

Map<String, String> placeholders = new HashMap<>();
placeholders.put("key1", "value1");
placeholders.put("key2", "value2");

Flyway.configure()
    .placeholders(placeholders)
    .load()

Gradle

flyway {
    placeholders = ['key1' : 'value1', 'key2' : 'value2']
}

Maven

<configuration>
    <placeholders>
        <key1>value1</key1>
        <key2>value2</key2>
    </placeholders>
</configuration>