Package org.apache.druid.indexer

Class Checks

java.lang.Object

org.apache.druid.indexer.Checks

public final class Checks
extends Object

Various helper methods useful for checking the validity of arguments to spec constructors.

Method Summary

Modifier and Type	Method	Description
static <T> Property<T>	checkAtMostOneNotNull(String name1, T value1, String name2, T value2)
static <T> Property<T>	checkAtMostOneNotNull(Property<T> property1, Property<T> property2)
static <T> Property<T>	checkOneNotNullOrEmpty(List<Property<T>> properties)

Methods inherited from class java.lang.Object

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

Method Details

checkOneNotNullOrEmpty

public static <T> Property<T> checkOneNotNullOrEmpty(List<Property<T>> properties)

checkAtMostOneNotNull

public static <T> Property<T> checkAtMostOneNotNull(Property<T> property1,
 Property<T> property2)

Returns:

Non-null value, or first one if both are null. -1 is interpreted as null for historical reasons.

checkAtMostOneNotNull

public static <T> Property<T> checkAtMostOneNotNull(String name1,
 T value1,
 String name2,
 T value2)

Returns:

Non-null value, or first one if both are null. -1 is interpreted as null for historical reasons.