MessagePackDeserialzeTypeSwitches-code.java

@MessagePackDeserialzeTypeSwitches({
        @MessagePackTypeSwitches.ifEquals(key = "type", value = "output", then = OutputNode.class),
        @MessagePackTypeSwitches.ifEquals(key = "type", value = "project", then = ProjectNode.class),
        @MessagePackTypeSwitches.ifEquals(key = "type", value = "tablescan", then = TableScanNode.class),
        @MessagePackTypeSwitches.ifExists(key = "error", then = ErrorNode.class)
        @MessagePackTypeSwitches.ifExists(key = "engine", then = EngineNode.class)
})
public abstract class PlanNode
{
    ...
}

public class ErrorNode extends PlanNode
{
    @JsonProperty("error")
    private String getError() { ... }
}

public class EngineNode extends PlanNode
{
    @JsonProperty("engine")
    private String getEngine() { ... }
}