Package com.googlecode.javaewah
Class NonEmptyVirtualStorage
- java.lang.Object
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- com.googlecode.javaewah.NonEmptyVirtualStorage
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- All Implemented Interfaces:
BitmapStorage
public class NonEmptyVirtualStorage extends java.lang.Object implements BitmapStorage
This is a BitmapStorage that can be used to determine quickly if the result of an operation is non-trivial... that is, whether there will be at least on set bit.- Since:
- 0.4.2
- Author:
- Daniel Lemire and Veronika Zenz
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Constructor Summary
Constructors Constructor Description NonEmptyVirtualStorage()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
add(long newdata)
If the word to be added is non-zero, a NonEmptyException exception is thrown.void
addStreamOfEmptyWords(boolean v, long number)
If the boolean value is true and number is greater than 0, then it throws a NonEmptyException exception, otherwise, nothing happens.void
addStreamOfLiteralWords(long[] data, int start, int number)
throws a NonEmptyException exception when number is greater than 0void
addStreamOfNegatedLiteralWords(long[] data, int start, int number)
throws a NonEmptyException exception when number is greater than 0void
setSizeInBits(int bits)
Does nothing.
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Method Detail
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add
public void add(long newdata)
If the word to be added is non-zero, a NonEmptyException exception is thrown.- Specified by:
add
in interfaceBitmapStorage
- Parameters:
newdata
- the word- See Also:
BitmapStorage.add(long)
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addStreamOfLiteralWords
public void addStreamOfLiteralWords(long[] data, int start, int number)
throws a NonEmptyException exception when number is greater than 0- Specified by:
addStreamOfLiteralWords
in interfaceBitmapStorage
- Parameters:
data
- the literal wordsstart
- the starting point in the arraynumber
- the number of literal words to add
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addStreamOfEmptyWords
public void addStreamOfEmptyWords(boolean v, long number)
If the boolean value is true and number is greater than 0, then it throws a NonEmptyException exception, otherwise, nothing happens.- Specified by:
addStreamOfEmptyWords
in interfaceBitmapStorage
- Parameters:
v
- zeros or onesnumber
- how many to words add- See Also:
BitmapStorage.addStreamOfEmptyWords(boolean, long)
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addStreamOfNegatedLiteralWords
public void addStreamOfNegatedLiteralWords(long[] data, int start, int number)
throws a NonEmptyException exception when number is greater than 0- Specified by:
addStreamOfNegatedLiteralWords
in interfaceBitmapStorage
- Parameters:
data
- the literal wordsstart
- the starting point in the arraynumber
- the number of literal words to add
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setSizeInBits
public void setSizeInBits(int bits)
Does nothing.- Specified by:
setSizeInBits
in interfaceBitmapStorage
- Parameters:
bits
- number of bits- See Also:
BitmapStorage.setSizeInBits(int)
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