[
https://issues.apache.org/jira/browse/SPARK-8853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Feynman Liang updated SPARK-8853:
---------------------------------
Description:
{{FPGrowth[Item : ClassTag]}} has a public constructor but uses a parameterized
type with a context bound {{ClassTag}}, making it difficult to instantiate in
Java.
For example, to instantiate one needs to do
{code:title=Bar.java|borderStyle=solid}
ClassTag<String> tag = scala.reflect.ClassTag$.MODULE$.apply(String.class)
FPGrowthModel<String> model = new FPGrowthModel<String>(rdd, 35L, tag);
JavaRDD<AssociationRules.Rule<String>> results = (new
AssociationRules()).runJava(model);
{code}
was:
`FPGrowth[Item : ClassTag]` has a public constructor but uses a parameterized
type with a context bound `ClassTag`, making it difficult to instantiate in
Java.
For example, to instantiate one needs to do
```
ClassTag<String> tag = scala.reflect.ClassTag$.MODULE$.apply(String.class)
FPGrowthModel<String> model = new FPGrowthModel<String>(rdd, 35L, tag);
JavaRDD<AssociationRules.Rule<String>> results = (new
AssociationRules()).runJava(model);
```
> FPGrowth is not Java-Friendly
> -----------------------------
>
> Key: SPARK-8853
> URL: https://issues.apache.org/jira/browse/SPARK-8853
> Project: Spark
> Issue Type: Improvement
> Components: MLlib
> Reporter: Feynman Liang
>
> {{FPGrowth[Item : ClassTag]}} has a public constructor but uses a
> parameterized type with a context bound {{ClassTag}}, making it difficult to
> instantiate in Java.
> For example, to instantiate one needs to do
> {code:title=Bar.java|borderStyle=solid}
> ClassTag<String> tag = scala.reflect.ClassTag$.MODULE$.apply(String.class)
> FPGrowthModel<String> model = new FPGrowthModel<String>(rdd, 35L, tag);
> JavaRDD<AssociationRules.Rule<String>> results = (new
> AssociationRules()).runJava(model);
> {code}
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