CODEWITHSUNDEEP
javaspringspring-bootyaml
Shin938
Shin938

Reputation: 979

spring boot loads yaml list as map

I have a yaml file like this one 

      framework:
              generalConfiguration:
                    cassandra:
                      fe:
                        seeds:
                            - fire201
                            - fire202
                        dc: DC

And a bean

public class ConfigurationBean{

private Map<String, Object> generalConfiguration;

public Map<String, Object> getGeneralConfiguration() {
    return generalConfiguration;
}

public void setGeneralConfiguration(Map<String, Object> generalConfiguration) {
    this.generalConfiguration = generalConfiguration;
}

A bean factory methods

@Bean(name = "configurationDataHolder")
@ConfigurationProperties(prefix = "framework")
public ConfigurationBean configurationBean(){
    return new ConfigurationBean();
}

My problem is that spring boot populates the generalConfiguration Map where : fe is a Map with keys 

    seeds
    dc

dc is a String value entry. and seeds is a map like this one:

0 -> fire201
1 -> fire202

I would expect seeds to be populated as a List.

Any idea how to do that?

Upvotes: 0

Views: 724

Answers (1)

Stephane Nicoll
Stephane Nicoll

Reputation: 33151

Your generalConfiguration is using a raw type for the value so you're not giving any clue to the framework as what it is supposed to do with it. When you look at your configuration, it may be obvious to you but we process the configuration by browsing relationships one by one and taking the best possible options.

Your Object does not give any hint. Mixing simple values and maps in the same structure is also a smell.

Upvotes: 1

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