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https://issues.apache.org/jira/browse/KNOX-2052?focusedWorklogId=325939&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-325939
]
ASF GitHub Bot logged work on KNOX-2052:
----------------------------------------
Author: ASF GitHub Bot
Created on: 09/Oct/19 21:25
Start Date: 09/Oct/19 21:25
Worklog Time Spent: 10m
Work Description: risdenk commented on pull request #163: KNOX-2052 -
KnoxShellTable mean, median, and mode methods
URL: https://github.com/apache/knox/pull/163#discussion_r333239968
##########
File path:
gateway-shell/src/main/java/org/apache/knox/gateway/shell/table/KnoxShellTable.java
##########
@@ -86,6 +96,117 @@ public KnoxShellTable value(Comparable<? extends Object>
value) {
return col;
}
+ public Conversions getConversion(Comparable<? extends Object> colIndex) {
+ Conversions type = null;
+
+ if (colIndex instanceof Double) {
+ type = Conversions.DOUBLE;
+ }
+ else if (colIndex instanceof Integer) {
+ type = Conversions.INTEGER;
+ }
+ else if (colIndex instanceof Float) {
+ type = Conversions.FLOAT;
+ }
+ else if (colIndex instanceof Byte) {
+ type = Conversions.BYTE;
+ }
+ else if (colIndex instanceof Short) {
+ type = Conversions.SHORT;
+ }
+ else if (colIndex instanceof Long) {
+ type = Conversions.LONG;
+ }
+ return type;
+ }
+
+ public double[] toDoubleArray(String colName) throws
IllegalArgumentException {
+ List<Comparable<? extends Object>> col = values(colName);
+ double[] colArray = new double[col.size()];
+ Conversions conversionMethod = null;
+ for (int i = 0; i < col.size(); i++) {
+ if (i == 0) {
+ conversionMethod = getConversion(col.get(i));
+ }
+
+ switch (conversionMethod) {
+ case DOUBLE:
Review comment:
nit: Above you use `Conversions.DOUBLE` but here you use just the enum
`DOUBLE` - it would be better to be consistent. I personally prefer
`Conversions.DOUBLE` so it doesn't look like its a built in constant.
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Issue Time Tracking
-------------------
Worklog Id: (was: 325939)
> KnoxShellTable mean, median, and mode methods
> ---------------------------------------------
>
> Key: KNOX-2052
> URL: https://issues.apache.org/jira/browse/KNOX-2052
> Project: Apache Knox
> Issue Type: Improvement
> Components: KnoxShell
> Reporter: Ljmiv
> Assignee: Ljmiv
> Priority: Major
> Fix For: 1.4.0
>
> Time Spent: 5h 20m
> Remaining Estimate: 0h
>
> Would be beneficial to be able to get the mean, median, and mode values from
> columns in a table. No such functions exist as of now.
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