org.eclipse.viatra.query.runtime.matchers.tuple

Class Tuple

java.lang.Object

org.eclipse.viatra.query.runtime.matchers.tuple.Tuple

Direct Known Subclasses:

FlatTuple, LeftInheritanceTuple, MaskedTuple, MatchingFrame

public abstract class Tuple
extends java.lang.Object

Immutable tuple.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	cachedHash Caches precalculated hash value

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Tuple() Creates a Tuple instance Derivatives should call calcHash()

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
abstract java.lang.Object	get(int index)
<T> java.util.Set<T>	getDistinctElements()
java.lang.Object[]	getElements() As the tuple is supposed to be immutable, do not modify the returned array.
abstract int	getSize()
int	hashCode()
protected boolean	internalEquals(Tuple other)
java.util.Map<java.lang.Object,java.lang.Integer>	invertIndex() Calculates an inverted index of the elements of this pattern.
java.util.Map<java.lang.Object,java.util.List<java.lang.Integer>>	invertIndexWithMupliplicity() Calculates an inverted index of the elements of this pattern.
Tuple	replaceAll(java.lang.Object obsolete, java.lang.Object replacement)
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

cachedHash

protected int cachedHash

Caches precalculated hash value

Constructor Detail

Tuple

protected Tuple()

Creates a Tuple instance Derivatives should call calcHash()

Method Detail

getSize

public abstract int getSize()

Returns:

number of elements

get

public abstract java.lang.Object get(int index)

Returns:

the element at the specified index

getElements

public java.lang.Object[] getElements()

As the tuple is supposed to be immutable, do not modify the returned array.

Returns:

the array containing all elements of this Tuple

getDistinctElements

public <T> java.util.Set<T> getDistinctElements()

Returns:

the set containing all distinct elements of this Tuple, cast as type T

invertIndex

public java.util.Map<java.lang.Object,java.lang.Integer> invertIndex()

Calculates an inverted index of the elements of this pattern. For each element, the index of the (last) occurrence is calculated.

Returns:

the inverted index mapping each element of this pattern to its index in the array

invertIndexWithMupliplicity

public java.util.Map<java.lang.Object,java.util.List<java.lang.Integer>> invertIndexWithMupliplicity()

Calculates an inverted index of the elements of this pattern. For each element, the index of all of its occurrences is calculated.

Returns:

the inverted index mapping each element of this pattern to its index in the array

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

internalEquals

protected boolean internalEquals(Tuple other)

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

replaceAll

public Tuple replaceAll(java.lang.Object obsolete,
                        java.lang.Object replacement)