org.apache.derby.impl.store.access.btree

Class D_BTreeController

java.lang.Object

org.apache.derby.iapi.services.diag.DiagnosticableGeneric

org.apache.derby.impl.store.access.btree.D_BTreeController

All Implemented Interfaces:

Diagnosticable

Direct Known Subclasses:

D_B2IController

public class D_BTreeController
extends DiagnosticableGeneric

Field Summary

Fields inherited from class org.apache.derby.iapi.services.diag.DiagnosticableGeneric

diag_object

Constructor Summary

Constructors

Constructor and Description
D_BTreeController()

Method Summary

Methods

Modifier and Type	Method and Description
private static void	diag_level(OpenBTree open_btree, ControlRow control_row, java.util.Properties prop, LevelInfo[] level_info)
private static java.lang.String	diag_onelevel(java.util.Properties prop, LevelInfo li)
private static void	diag_page(OpenBTree open_btree, ControlRow control_row, java.util.Properties prop, LevelInfo[] level_info)
private static java.lang.String	diag_tabulate(java.util.Properties prop, LevelInfo[] level_info)
java.lang.String	diag() Default implementation of diagnostic on the object.
void	init(java.lang.Object obj)
private static java.lang.String	olddiag_tabulate(java.util.Properties prop, LevelInfo[] level_info)
private static java.lang.String	out_summary(java.lang.String hdr, long value, double ratio, java.lang.String ratio_desc)

Methods inherited from class org.apache.derby.iapi.services.diag.DiagnosticableGeneric

diag_detail

Methods inherited from class java.lang.Object

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

Constructor Detail

D_BTreeController

public D_BTreeController()

Method Detail

diag_page

private static void diag_page(OpenBTree open_btree,
             ControlRow control_row,
             java.util.Properties prop,
             LevelInfo[] level_info)
                       throws StandardException

Throws:

StandardException

diag_level

private static void diag_level(OpenBTree open_btree,
              ControlRow control_row,
              java.util.Properties prop,
              LevelInfo[] level_info)
                        throws StandardException

Throws:

StandardException

out_summary

private static java.lang.String out_summary(java.lang.String hdr,
                           long value,
                           double ratio,
                           java.lang.String ratio_desc)

diag_onelevel

private static java.lang.String diag_onelevel(java.util.Properties prop,
                             LevelInfo li)

diag_tabulate

private static java.lang.String diag_tabulate(java.util.Properties prop,
                             LevelInfo[] level_info)

olddiag_tabulate

private static java.lang.String olddiag_tabulate(java.util.Properties prop,
                                LevelInfo[] level_info)

init

public void init(java.lang.Object obj)

Specified by:

init in interface Diagnosticable

Overrides:

init in class DiagnosticableGeneric

diag

public java.lang.String diag()
                      throws StandardException

Default implementation of diagnostic on the object.

This routine returns a string with whatever diagnostic information you would like to provide about this object.

This routine returns a summary table of information about pages in each level of the btree. It tells the height of the tree, the average free and reserved bytes per level, and the page size.

Specified by:

diag in interface Diagnosticable

Overrides:

diag in class DiagnosticableGeneric

Returns:

A string with diagnostic information about the object.

Throws:

StandardException - Standard Derby exception policy