ClassListExtractor (Class list verifier 0.2.1 API)

java.lang.Object
- com.exasol.classlistextractor.verifier.ClassListExtractor

All Implemented Interfaces:

AutoCloseable
```
public class ClassListExtractor
extends Object
implements AutoCloseable
```
This class captures the classes loaded by the JVM of a UDF.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static interface`	`ClassListExtractor.CallbackWithQueryToScript`	Interface for a method that runs a query to a script, that loads classes you want to analyze with `capture(CallbackWithQueryToScript)`.

Constructor Summary

Constructors
Constructor	Description
`ClassListExtractor(com.exasol.bucketfs.Bucket bucket, LocalServiceExposer serviceExposer)`	Create a new instance of `ClassListExtractor`.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`List<String>`	`capture(ClassListExtractor.CallbackWithQueryToScript runnable)`	Capture the class list of a UDF call.
`void`	`close()`
`String[]`	`getJvmOptions()`	Get the JVM options that must be added to the script.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ClassListExtractor
```
public ClassListExtractor(com.exasol.bucketfs.Bucket bucket,
                          LocalServiceExposer serviceExposer)
```
    Create a new instance of ClassListExtractor.
    
    Parameters:
    
    bucket - bucket for uploading an agent used for extracting the class list
    
    serviceExposer - callback that makes a local TCP service available inside the database
- Method Detail
  - getJvmOptions
```
public String[] getJvmOptions()
```
    Get the JVM options that must be added to the script.
    
    Returns:
    
    jvm options
  - capture
```
public List<String> capture(ClassListExtractor.CallbackWithQueryToScript runnable)
```
    Capture the class list of a UDF call.
    The query you want to analyze must involve a script that contains the JVM options provided by getJvmOptions(). To make sure that you don't forget this, this method will throw an exception if you did not call getJvmOptions() before this method.
    
    Parameters:
    
    runnable - function that performs the UDF call
    
    Returns:
    
    list of captured classes
  - close
```
public void close()
```
    Specified by:
    
    close in interface AutoCloseable