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java.lang.Objectcom.ibm.icu.util.CompactCharArray
class CompactATypeArray : use only on primitive data types Provides a compact way to store information that is indexed by Unicode values, such as character properties, types, keyboard values, etc.This is very useful when you have a block of Unicode data that contains significant values while the rest of the Unicode data is unused in the application or when you have a lot of redundance, such as where all 21,000 Han ideographs have the same value. However, lookup is much faster than a hash table. A compact array of any primitive data type serves two purposes:
CompactByteArray
Field Summary | |
static int |
BLOCKSHIFT
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static int |
UNICODECOUNT
The total number of Unicode characters. |
Constructor Summary | |
CompactCharArray()
Default constructor for CompactCharArray, the default value of the compact array is 0. |
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CompactCharArray(char defaultValue)
Constructor for CompactCharArray. |
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CompactCharArray(char[] indexArray,
char[] newValues)
Constructor for CompactCharArray. |
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CompactCharArray(java.lang.String indexArray,
java.lang.String valueArray)
Constructor for CompactCharArray. |
Method Summary | |
java.lang.Object |
clone()
Overrides Cloneable |
void |
compact()
Compact the array |
void |
compact(boolean exhaustive)
Compact the array. |
char |
elementAt(char index)
Get the mapped value of a Unicode character. |
boolean |
equals(java.lang.Object obj)
Compares the equality of two compact array objects. |
char[] |
getIndexArray()
For internal use only. |
char[] |
getValueArray()
For internal use only. |
int |
hashCode()
Generates the hash code for the compact array object |
void |
setElementAt(char index,
char value)
Set a new value for a Unicode character. |
void |
setElementAt(char start,
char end,
char value)
Set new values for a range of Unicode character. |
Methods inherited from class java.lang.Object |
finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
public static final int UNICODECOUNT
public static final int BLOCKSHIFT
Constructor Detail |
public CompactCharArray()
public CompactCharArray(char defaultValue)
defaultValue
- the default value of the compact array.public CompactCharArray(char[] indexArray, char[] newValues)
indexArray
- the indicies of the compact array.newValues
- the values of the compact array.
java.lang.IllegalArgumentException
- If the index is out of range.public CompactCharArray(java.lang.String indexArray, java.lang.String valueArray)
indexArray
- the RLE-encoded indicies of the compact array.valueArray
- the RLE-encoded values of the compact array.
java.lang.IllegalArgumentException
- if the index or value array is
the wrong size.Method Detail |
public char elementAt(char index)
index
- the character to get the mapped value with
public void setElementAt(char index, char value)
index
- the character to set the mapped value withvalue
- the new mapped valuepublic void setElementAt(char start, char end, char value)
start
- the starting offset of the rangeend
- the ending offset of the rangevalue
- the new mapped valuepublic void compact()
public void compact(boolean exhaustive)
public char[] getIndexArray()
public char[] getValueArray()
public java.lang.Object clone()
public boolean equals(java.lang.Object obj)
obj
- the compact array object to be compared with this.
public int hashCode()
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