Class EmptyMemory<T>
- java.lang.Object
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- org.eclipse.viatra.query.runtime.matchers.util.EmptyMemory<T>
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- All Implemented Interfaces:
java.lang.Iterable<T>,IMemoryView<T>
public class EmptyMemory<T> extends java.lang.Object implements IMemoryView<T>
A singleton immutable empty memory.- Since:
- 2.0
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description booleancontainsNonZero(T value)booleancontainsNonZeroUnsafe(java.lang.Object value)java.util.Set<T>distinctValues()The set of distinct valuesbooleanequals(java.lang.Object obj)intgetCount(T value)Returns the number of occurrences of the given value.intgetCountUnsafe(java.lang.Object value)Returns the number of occurrences of the given value (which may be of any type).inthashCode()static <T> EmptyMemory<T>instance()booleanisEmpty()java.util.Iterator<T>iterator()intsize()java.lang.StringtoString()-
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.eclipse.viatra.query.runtime.matchers.util.IMemoryView
asMap, asStream, entriesWithMultiplicities, forEachEntryWithMultiplicities, theContainedVersionOf, theContainedVersionOfUnsafe
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Method Detail
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instance
public static <T> EmptyMemory<T> instance()
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iterator
public java.util.Iterator<T> iterator()
- Specified by:
iteratorin interfacejava.lang.Iterable<T>
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getCount
public int getCount(T value)
Description copied from interface:IMemoryViewReturns the number of occurrences of the given value.- Specified by:
getCountin interfaceIMemoryView<T>- Returns:
- the number of occurrences
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getCountUnsafe
public int getCountUnsafe(java.lang.Object value)
Description copied from interface:IMemoryViewReturns the number of occurrences of the given value (which may be of any type).- Specified by:
getCountUnsafein interfaceIMemoryView<T>- Returns:
- the number of occurrences
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containsNonZero
public boolean containsNonZero(T value)
- Specified by:
containsNonZeroin interfaceIMemoryView<T>- Returns:
- true if the given value is contained with a nonzero multiplicity
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containsNonZeroUnsafe
public boolean containsNonZeroUnsafe(java.lang.Object value)
- Specified by:
containsNonZeroUnsafein interfaceIMemoryView<T>- Returns:
- true if the given value (which may be of any type) is contained with a nonzero multiplicity
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size
public int size()
- Specified by:
sizein interfaceIMemoryView<T>- Returns:
- the number of distinct values
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isEmpty
public boolean isEmpty()
- Specified by:
isEmptyin interfaceIMemoryView<T>- Returns:
- iff contains at least one value with non-zero occurrences
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distinctValues
public java.util.Set<T> distinctValues()
Description copied from interface:IMemoryViewThe set of distinct values- Specified by:
distinctValuesin interfaceIMemoryView<T>
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hashCode
public int hashCode()
- Overrides:
hashCodein classjava.lang.Object
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equals
public boolean equals(java.lang.Object obj)
- Overrides:
equalsin classjava.lang.Object
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toString
public java.lang.String toString()
- Overrides:
toStringin classjava.lang.Object
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