net.sf.saxon.tree.tiny

Class Statistics

java.lang.Object

net.sf.saxon.tree.tiny.Statistics

public class Statistics
extends Object

Statistics on the size of TinyTree instances, kept so that the system can learn how much space to allocate to new trees

Field Summary

Fields

Modifier and Type	Field and Description
static Statistics	ASSERTION_TREE_STATISTICS
static Statistics	FN_PARSE_STATISTICS
static Statistics	RESULT_TREE_STATISTICS
static Statistics	SOURCE_DOCUMENT_STATISTICS
static Statistics	TEMPORARY_TREE_STATISTICS

Constructor Summary

Constructors

Constructor and Description
Statistics()
Statistics(int nodes, int atts, int namespaces, int chars)

Method Summary

Methods

Modifier and Type	Method and Description
double	getAverageAttributes()
double	getAverageCharacters()
double	getAverageNamespaces()
double	getAverageNodes()
void	updateStatistics(int numberOfNodes, int numberOfAttributes, int numberOfNamespaces, int chars) Update the statistics held in static data.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SOURCE_DOCUMENT_STATISTICS

public static final Statistics SOURCE_DOCUMENT_STATISTICS

TEMPORARY_TREE_STATISTICS

public static final Statistics TEMPORARY_TREE_STATISTICS

RESULT_TREE_STATISTICS

public static final Statistics RESULT_TREE_STATISTICS

ASSERTION_TREE_STATISTICS

public static final Statistics ASSERTION_TREE_STATISTICS

FN_PARSE_STATISTICS

public static final Statistics FN_PARSE_STATISTICS

Constructor Detail

Statistics

public Statistics()

Statistics

public Statistics(int nodes,
          int atts,
          int namespaces,
          int chars)

Method Detail

getAverageNodes

public double getAverageNodes()

getAverageAttributes

public double getAverageAttributes()

getAverageNamespaces

public double getAverageNamespaces()

getAverageCharacters

public double getAverageCharacters()

updateStatistics

public void updateStatistics(int numberOfNodes,
                    int numberOfAttributes,
                    int numberOfNamespaces,
                    int chars)

Update the statistics held in static data. We don't bother to sychronize, on the basis that it doesn't matter if the stats are wrong.

Parameters:

numberOfNodes - the number of (non-attribute, non-namespace) nodes

numberOfAttributes - the number of attribute nodes

numberOfNamespaces - the number of namespace bindings (deltas on namespace nodes)

chars - the number of characters in text nodes