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java.lang.Objectcommon.Statistics
public class Statistics
Provides a tool for collecting statistics about the values of fields in the data set.
| Constructor Summary | |
|---|---|
Statistics()
Constructs the object without initialization. |
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| Method Summary | |
|---|---|
void |
add(MultiFieldKey key,
int quantity)
Add explicitly a value with given quantity. |
void |
add(Record record)
Add and parse the record, and update the statistics. |
void |
initialize(int size)
Initializes the object with total number of distinct values in the data set. |
void |
print()
Prints statistics to standard output stream. |
void |
print(java.io.OutputStream out)
Prints statistics to given output stream. |
void |
print(java.lang.String filename)
Print statistics to a given file. |
| Methods inherited from class java.lang.Object |
|---|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public Statistics()
| Method Detail |
|---|
public void initialize(int size)
size - number of distinct values in the data set.public void add(Record record)
record - record to add.
public void add(MultiFieldKey key,
int quantity)
key - quantity - public void print(java.io.OutputStream out)
out - output stream.public void print()
public void print(java.lang.String filename)
filename - output filename.
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