org.apache.derby.impl.store.raw.data
Class D_StoredPage

java.lang.Object
  org.apache.derby.impl.store.raw.data.D_StoredPage

All Implemented Interfaces:

Diagnosticable

public class D_StoredPage

extends java.lang.Object

implements Diagnosticable

The D_StoredPage class provides diagnostic information about the StoredPage class. Currently this info includes: o a dump of the page. o page size of the page. o bytes free on the page. o bytes reserved on the page.

Field Summary

protected StoredPage

page

Constructor Summary

D_StoredPage()

Method Summary

boolean	checkSlotTable(java.io.PrintStream out) Checks the slot table. 1) checks the number of slot entries matches the record count 2) checks the slot table lengths match the field lengths
void	diag_detail(java.util.Properties prop) Provide detailed diagnostic information about a StoredPage.
java.lang.String	diag() Provide a string dump of the StoredPage.
void	init(java.lang.Object obj)
java.lang.String	pageHeaderToString()

Methods inherited from class java.lang.Object

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

Field Detail

page

protected StoredPage page

Constructor Detail

D_StoredPage

public D_StoredPage()

Method Detail

init

public void init(java.lang.Object obj)

Specified by:

init in interface Diagnosticable

diag

public java.lang.String diag()
                      throws StandardException

Provide a string dump of the StoredPage.

RESOLVE - once the "Diagnostic" interface is accepted move the string dumping code into this routine from it's current place in the StoredPage code.

Specified by:

diag in interface Diagnosticable

Returns:

string dump of the StoredPage

Throws:

StandardException - Standard exception policy.

diag_detail

public void diag_detail(java.util.Properties prop)
                 throws StandardException

Provide detailed diagnostic information about a StoredPage.

Currently supports 3 types of information: Page.DIAG_PAGE_SIZE - page size. Page.DIAG_BTYES_FREE - # of free bytes on the page. Page.DIAG_BYTES_RESERVED - # of reserved bytes on the page.

Specified by:

diag_detail in interface Diagnosticable

Returns:

string dump of the StoredPage

Throws:

StandardException - Standard exception policy.

checkSlotTable

public boolean checkSlotTable(java.io.PrintStream out)
                       throws StandardException,
                              java.io.IOException

Checks the slot table. 1) checks the number of slot entries matches the record count 2) checks the slot table lengths match the field lengths

Throws:

StandardException - Standard exception policy.

java.io.IOException

pageHeaderToString

public java.lang.String pageHeaderToString()