FrankChen021 commented on issue #13123:
URL: https://github.com/apache/druid/issues/13123#issuecomment-1257389641
A builder pattern is friendly for developers. It's a nice API.
```java
throw DruidException
.userError()
.error(DruidException.INVALID_SQL)
.message(“The table ‘%s’ is not defined in schema ‘%s’.", tableName,
schemaName)
.context("location", "Line %d, column %d", node.lineNo, node.columnNo)
.build();
```
Take this as an example, I actually don't understand the difference of
`message` and `context` even though I know the literal meaning of these two
words. I mean sometimes it's confusion for developers to figure out whether we
should put the information in the `context` or `message`. When to use `message`
and when to use `context`? We can of course put the `location` information
above in the `message` too.
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