Class SectionManager

java.lang.Object

org.apache.derby.client.am.SectionManager

public class SectionManager
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
private Agent	agent_
private static final String	cursorNamePrefixWithHold__
private static final String	cursorNamePrefixWithNoHold__
private final Stack<Section>	freeSectionsHold_
private final Stack<Section>	freeSectionsNonHold_
(package private) byte[]	holdPKGNAMCBytes
private final int	maxNumSections_
private int	nextAvailableSectionNumber_
(package private) byte[]	noHoldPKGNAMCBytes
private static final String	packageNameWithHold__
private static final String	packageNameWithNoHold__
private final Hashtable<String,Section>	positionedUpdateCursorNameToQuerySection_
private final Hashtable<String, WeakReference<ClientResultSet>>	positionedUpdateCursorNameToResultSet_

Constructor Summary

Constructors

Constructor	Description
SectionManager(Agent agent)

Method Summary

Modifier and Type	Method	Description
(package private) void	freeSection(Section section, int resultSetHoldability)
(package private) Section	getDynamicSection(int resultSetHoldability)
(package private) ClientResultSet	getPositionedUpdateResultSet(String cursorName)
(package private) Section	getPositionedUpdateSection(String cursorName, boolean useExecuteImmediateSection)
(package private) Section	getPositionedUpdateSection(Section querySection)
private Section	getSection(Stack freeSections, String packageName, String cursorNamePrefix, int resultSetHoldability)
(package private) void	mapCursorNameToQuerySection(String cursorName, Section section)
(package private) void	mapCursorNameToResultSet(String cursorName, ClientResultSet resultSet)
(package private) void	removeCursorNameToQuerySectionMapping(String clientCursorName, String serverCursorName)
(package private) void	removeCursorNameToResultSetMapping(String clientCursorName, String serverCursorName)
(package private) void	setPKGNAMCBytes(byte[] b, int resultSetHoldability)	Store the Packagename and consistency token information This is called from Section.setPKGNAMCBytes

Methods inherited from class Object

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

Field Details

agent_

private Agent agent_

freeSectionsNonHold_

private final Stack<Section> freeSectionsNonHold_

freeSectionsHold_

private final Stack<Section> freeSectionsHold_

nextAvailableSectionNumber_

private int nextAvailableSectionNumber_

holdPKGNAMCBytes

byte[] holdPKGNAMCBytes

noHoldPKGNAMCBytes

byte[] noHoldPKGNAMCBytes

packageNameWithHold__

private static final String packageNameWithHold__

See Also:

• Constant Field Values

packageNameWithNoHold__

private static final String packageNameWithNoHold__

See Also:

• Constant Field Values

cursorNamePrefixWithHold__

private static final String cursorNamePrefixWithHold__

See Also:

• Constant Field Values

cursorNamePrefixWithNoHold__

private static final String cursorNamePrefixWithNoHold__

See Also:

• Constant Field Values

positionedUpdateCursorNameToQuerySection_

private final Hashtable<String,Section> positionedUpdateCursorNameToQuerySection_

positionedUpdateCursorNameToResultSet_

private final Hashtable<String, WeakReference<ClientResultSet>> positionedUpdateCursorNameToResultSet_

maxNumSections_

private final int maxNumSections_

See Also:

• Constant Field Values

Constructor Details

SectionManager

public SectionManager(Agent agent)

Method Details

setPKGNAMCBytes

void setPKGNAMCBytes(byte[] b,
 int resultSetHoldability)

Store the Packagename and consistency token information This is called from Section.setPKGNAMCBytes

Parameters:

b - bytearray that has the PKGNAMC information to be stored

resultSetHoldability - depending on the holdability store it in the correct byte array packagename and consistency token information for when holdability is set to HOLD_CURSORS_OVER_COMMIT is stored in holdPKGNAMCBytes and in noHoldPKGNAMCBytes when holdability is set to CLOSE_CURSORS_AT_COMMIT

getDynamicSection

Section getDynamicSection(int resultSetHoldability)
                   throws SqlException

Throws:

SqlException

getSection

private Section getSection(Stack freeSections,
 String packageName,
 String cursorNamePrefix,
 int resultSetHoldability)
                    throws SqlException

Throws:

SqlException

freeSection

void freeSection(Section section,
 int resultSetHoldability)

getPositionedUpdateSection

Section getPositionedUpdateSection(Section querySection)
                            throws SqlException

Throws:

SqlException

getPositionedUpdateSection

Section getPositionedUpdateSection(String cursorName,
 boolean useExecuteImmediateSection)
                            throws SqlException

Throws:

SqlException

mapCursorNameToQuerySection

void mapCursorNameToQuerySection(String cursorName,
 Section section)

mapCursorNameToResultSet

void mapCursorNameToResultSet(String cursorName,
 ClientResultSet resultSet)

getPositionedUpdateResultSet

ClientResultSet getPositionedUpdateResultSet(String cursorName)
                                      throws SqlException

Throws:

SqlException

removeCursorNameToResultSetMapping

void removeCursorNameToResultSetMapping(String clientCursorName,
 String serverCursorName)

removeCursorNameToQuerySectionMapping

void removeCursorNameToQuerySectionMapping(String clientCursorName,
 String serverCursorName)