org.apache.drill.test

Class PrintingUtils

java.lang.Object

org.apache.drill.test.PrintingUtils

public final class PrintingUtils
extends Object

This class contains utility methods to run lambda functions with the necessary LogFixture boilerplate to print results to stdout for debugging purposes.

If you need to enable printing for more classes, simply add them to the LogFixture constructed in printAndThrow(CheckedSupplier).

Constructor Summary

Constructors

Constructor and Description
PrintingUtils()

Method Summary

Modifier and Type	Method and Description
static <T> T	print(Supplier<T> supplier) Enables printing to stdout for lambda functions that do not throw exceptions.
static <T,E extends Exception> T	printAndThrow(CheckedSupplier<T,E> supplier) Enables printing to stdout for lambda functions that throw an exception.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PrintingUtils

public PrintingUtils()

Method Detail

print

public static <T> T print(Supplier<T> supplier)

Enables printing to stdout for lambda functions that do not throw exceptions.

Type Parameters:

T - The return type of the lambda function.

Parameters:

supplier - Lambda function to execute.

Returns:

Data produced by the lambda function.

printAndThrow

public static <T,E extends Exception> T printAndThrow(CheckedSupplier<T,E> supplier)
                                               throws E extends Exception

Enables printing to stdout for lambda functions that throw an exception.

Type Parameters:

T - Return type of the lambda function.

E - Type of exception thrown.

Parameters:

supplier - Lambda function to execute.

Returns:

Data produced by the lambda function.

Throws:

E - An exception.

E extends Exception