Package org.apache.druid.segment.serde
Class ReplaceFirstValueWithNullIndexed<T>
- java.lang.Object
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- org.apache.druid.segment.serde.ReplaceFirstValueWithNullIndexed<T>
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- All Implemented Interfaces:
Iterable<T>
,HotLoopCallee
,Indexed<T>
public class ReplaceFirstValueWithNullIndexed<T> extends Object implements Indexed<T>
An Indexed that replaces the first value with a literal null. Provided to enable compatibility for segments written underNullHandling.sqlCompatible()
mode but read underNullHandling.replaceWithDefault()
mode. Important note:isSorted()
returns the same value as the underlying delegate. In this case, this class assumes thatnull
is the lowest possible value in the universe: including anything indelegate
and anything that might be passed toindexOf(Object)
. Callers must ensure that this precondition is met.
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Constructor Summary
Constructors Constructor Description ReplaceFirstValueWithNullIndexed(Indexed<T> delegate)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description T
get(int index)
Get the value at specified positionint
indexOf(T value)
Returns the index of "value" in this Indexed object, or a negative number if the value is not present.void
inspectRuntimeShape(RuntimeShapeInspector inspector)
Implementations of this method should callinspector.visit()
with all fields of this class, which meet two conditions: 1.boolean
isSorted()
Indicates if this value set is sorted, the implication being that the contract ofIndexed.indexOf(T)
is strenthened to return a negative number equal to (-(insertion point) - 1) when the value is not present in the set.Iterator<T>
iterator()
int
size()
Number of elements in the value set-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface java.lang.Iterable
forEach, spliterator
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Method Detail
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size
public int size()
Description copied from interface:Indexed
Number of elements in the value set
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get
@Nullable public T get(int index)
Description copied from interface:Indexed
Get the value at specified position
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indexOf
public int indexOf(@Nullable T value)
Description copied from interface:Indexed
Returns the index of "value" in this Indexed object, or a negative number if the value is not present. The negative number is not guaranteed to be any particular number unlessIndexed.isSorted()
returns true, in which case it will be a negative number equal to (-(insertion point) - 1), in the manner of Arrays.binarySearch.- Specified by:
indexOf
in interfaceIndexed<T>
- Parameters:
value
- value to search for- Returns:
- index of value, or a negative number (equal to (-(insertion point) - 1) if
Indexed.isSorted()
)
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isSorted
public boolean isSorted()
Description copied from interface:Indexed
Indicates if this value set is sorted, the implication being that the contract ofIndexed.indexOf(T)
is strenthened to return a negative number equal to (-(insertion point) - 1) when the value is not present in the set.
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inspectRuntimeShape
public void inspectRuntimeShape(RuntimeShapeInspector inspector)
Description copied from interface:HotLoopCallee
Implementations of this method should callinspector.visit()
with all fields of this class, which meet two conditions: 1. They are used in methods of this class, annotated withCalledFromHotLoop
2. They are either: a. Nullable objects b. Instances of HotLoopCallee c. Objects, which don't always have a specific class in runtime. For example, a field of typeSet
could beHashSet
orTreeSet
in runtime, depending on how this instance (the instance on which inspectRuntimeShape() is called) is configured. d. ByteBuffer or similar objects, where byte order matters e. boolean flags, affecting branch taking f. Arrays of objects, meeting any of conditions a-e.- Specified by:
inspectRuntimeShape
in interfaceHotLoopCallee
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