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java.lang.Objectjava.util.AbstractMap<K,V>
java.util.HashMap<K,java.lang.Long>
org.archive.util.Histotable<K>
public class Histotable<K>
Collect and report frequency information. Assumes external synchornization.
Constructor Summary | |
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Histotable()
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Method Summary | |
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long |
add(Histotable<K> ht)
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static java.lang.String |
entryString(java.lang.Object e)
Utility method to convert a key->Long into the string "count key". |
long |
getLargestValue()
Return the largest value of any key that is larger than 0. |
java.util.TreeSet |
getSortedByCounts()
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java.util.TreeSet |
getSortedByKeys()
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long |
getTotal()
Return the total of all tallies. |
long |
subtract(Histotable<K> ht)
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void |
tally(K key)
Record one more occurence of the given object key. |
void |
tally(K key,
long count)
Record count more occurence(s) of the given object key. |
Methods inherited from class java.util.HashMap |
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clear, clone, containsKey, containsValue, entrySet, get, isEmpty, keySet, put, putAll, remove, size, values |
Methods inherited from class java.util.AbstractMap |
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equals, hashCode, toString |
Methods inherited from class java.lang.Object |
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finalize, getClass, notify, notifyAll, wait, wait, wait |
Methods inherited from interface java.util.Map |
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equals, hashCode |
Constructor Detail |
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public Histotable()
Method Detail |
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public void tally(K key)
key
- Object key.public void tally(K key, long count)
key
- Object key.public java.util.TreeSet getSortedByCounts()
public java.util.TreeSet getSortedByKeys()
public long getLargestValue()
public long getTotal()
public static java.lang.String entryString(java.lang.Object e)
e
- Map key.
public long add(Histotable<K> ht)
public long subtract(Histotable<K> ht)
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