Package net.sf.saxon.z
Class IntToIntHashMap
- java.lang.Object
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- net.sf.saxon.z.IntToIntHashMap
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- All Implemented Interfaces:
IntToIntMap
public class IntToIntHashMap extends java.lang.Object implements IntToIntMap
A hash table that maps int keys to int values.
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Constructor Summary
Constructors Constructor Description IntToIntHashMap()Initializes a map with a capacity of 8 and a load factor of 0,25.IntToIntHashMap(int capacity)Initializes a map with the given capacity and a load factor of 0,25.IntToIntHashMap(int capacity, double factor)Constructs a new map with initial capacity, and load factor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description voidclear()Clears the map.booleanfind(int key)Finds a key in the map.intget(int key)Gets the value for this key.intgetDefaultValue()Get the default value used to indicate an unused entryIntIteratorkeyIterator()Get an iterator over the integer key values held in the hash mapvoidput(int key, int value)Adds a key-value pair to the map.booleanremove(int key)Removes a key from the map.voidsetDefaultValue(int defaultValue)Set the value to be returned to indicate an unused entryintsize()Gets the size of the map.java.lang.StringtoString()The toString() method on this class is designed for diagnostics only, and the output should not be regarded as stable between releases.
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Constructor Detail
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IntToIntHashMap
public IntToIntHashMap()
Initializes a map with a capacity of 8 and a load factor of 0,25.
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IntToIntHashMap
public IntToIntHashMap(int capacity)
Initializes a map with the given capacity and a load factor of 0,25.- Parameters:
capacity- the initial capacity.
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IntToIntHashMap
public IntToIntHashMap(int capacity, double factor)Constructs a new map with initial capacity, and load factor.The capacity is the number of keys that can be mapped without resizing the arrays in which keys and values are stored. For efficiency, only a fraction of the elements in those arrays are used. That fraction is the specified load factor. The initial length of the arrays equals the smallest power of two not less than the ratio capacity/factor. The capacity of the map is increased, as necessary. The maximum number of keys that can be mapped is 2^30.
- Parameters:
capacity- the initial capacity.factor- the load factor.
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Method Detail
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setDefaultValue
public void setDefaultValue(int defaultValue)
Set the value to be returned to indicate an unused entry- Specified by:
setDefaultValuein interfaceIntToIntMap- Parameters:
defaultValue- the value to be returned byget(int)if no entry exists for the supplied key
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getDefaultValue
public int getDefaultValue()
Get the default value used to indicate an unused entry- Specified by:
getDefaultValuein interfaceIntToIntMap- Returns:
- the value to be returned by
get(int)if no entry exists for the supplied key
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clear
public void clear()
Clears the map.- Specified by:
clearin interfaceIntToIntMap
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find
public boolean find(int key)
Finds a key in the map.- Specified by:
findin interfaceIntToIntMap- Parameters:
key- Key- Returns:
- true if the key is mapped
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get
public int get(int key)
Gets the value for this key.- Specified by:
getin interfaceIntToIntMap- Parameters:
key- Key- Returns:
- the value, or the default value if not found.
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size
public int size()
Gets the size of the map.- Specified by:
sizein interfaceIntToIntMap- Returns:
- the size
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remove
public boolean remove(int key)
Removes a key from the map.- Specified by:
removein interfaceIntToIntMap- Parameters:
key- Key to remove- Returns:
- true if the value was removed
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put
public void put(int key, int value)Adds a key-value pair to the map.- Specified by:
putin interfaceIntToIntMap- Parameters:
key- Keyvalue- Value
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keyIterator
public IntIterator keyIterator()
Get an iterator over the integer key values held in the hash map- Specified by:
keyIteratorin interfaceIntToIntMap- Returns:
- an iterator whose next() call returns the key values (in arbitrary order)
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toString
public java.lang.String toString()
The toString() method on this class is designed for diagnostics only, and the output should not be regarded as stable between releases. Up to 100 key-value pairs are output in the format key:value, with comma separators, enclosed between braces: for example "{1:100,2:200}".- Overrides:
toStringin classjava.lang.Object- Returns:
- A string representation of some of the key-value pairs
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