smolnar82 commented on a change in pull request #296: KNOX-2240 - KnoxShell
Custom Command for WEBHDFS Use
URL: https://github.com/apache/knox/pull/296#discussion_r396263931
##########
File path:
gateway-shell/src/main/java/org/apache/knox/gateway/shell/commands/CSVCommand.java
##########
@@ -49,10 +49,24 @@ public Object execute(List<String> args) {
try {
if (withHeaders) {
- table = KnoxShellTable.builder().csv().withHeaders().url(url);
+ if (url.startsWith("$")) {
+ // a knoxshell variable is a csv file as a string
+ String csvString = (String) getVariables().get(url.substring(1));
+ table =
KnoxShellTable.builder().csv().withHeaders().string(csvString);
+ }
+ else {
+ table = KnoxShellTable.builder().csv().withHeaders().url(url);
+ }
}
else {
- table = KnoxShellTable.builder().csv().url(url);
+ if (url.startsWith("$")) {
+ // a knoxshell variable is a csv file as a string
+ String csvString = (String) getVariables().get(url.substring(1));
+ table = KnoxShellTable.builder().csv().string(csvString);
+ }
+ else {
+ table = KnoxShellTable.builder().csv().url(url);
+ }
Review comment:
Thes line can be replaced like:
```
CSVKnoxShellTableBuilder csvTableBuilder = withHeaders ?
KnoxShellTable.builder().csv() : KnoxShellTable.builder().csv().withHeaders();
table = url.startsWith("$") ? csvTableBuilder.env(url) ?
csvTableBuilder.url(url);
```
Please note that `env(String variableName)` should be added in
`CSVKnoxShellTableBuilder`.
IMO the implementation is cleaner this way.
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