class Preconditions
Utility class to aid with object comparison with null object handling.
Author
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static fun <T : Any!> checkAndGetInstanceOf(object: Any!, clazz: Class<T>!): T |
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static fun <T : Any!> checkAndGetInstanceOfWithoutException(object: Any!, clazz: Class<T>!): T |
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static fun checkNotNull(obj: Any!, varName: String!): Unitstatic fun <T : Any!> checkNotNull(reference: T): T
Ensures that an object reference passed as a parameter to the calling method is not null. |
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static fun collectionIsEmpty(col: MutableCollection<*>!): Boolean |
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static fun <T : Any!> emptyIfNull(iterable: MutableIterable<T>!): MutableIterable<T>! |
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static fun hashCodeOfObject(o: Any!): Int |
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static fun isEmpty(s: CharSequence!): Boolean |
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static fun isEqual(o1: Any!, o2: Any!): Boolean
Check if two objects are equal. This handles the objects being null. When not null the objects equals() method is used. |
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static fun isNotEmpty(s: CharSequence!): Boolean |
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static fun isNotNull(object: Any!): Boolean |
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static fun <T : Any!> nonNullOr(value: T?, defaultValue: T): T |
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static fun <T : Any!> requireNonNull(object: T, message: String!): T
Checks if the given object is not null. If the object is not null then it's returned, throw |
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static fun <T : CharSequence!> requireNotEmpty(charSequence: T?, message: String): T
Checks if the given charseqence is not empty. If the object is empty or null then |
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static fun <T : Any!> requireNull(object: T, message: String): Unit
Checks if the given object is null. If the object is not null then |
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static fun requireTrue(precondition: Boolean, message: String): Unit
Checks if the given precondition is true. If the object is false then |