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Java Source Code / Java Documentation » Database JDBC Connection Pool » sequoia 2.10.9 » org.continuent.sequoia.common.jmx.mbeans

Source Cross Reference Class Diagram Java Document (Java Doc)

org.continuent.sequoia.common.jmx.mbeans .DatabaseBackendMBean

All known Subclasses:   org.continuent.sequoia.controller.backend.management .DatabaseBackend,
DatabaseBackendMBean
public interface DatabaseBackendMBean (Code)
MBeanInterface to the DatabaseBackend
author:
   Nicolas Modrzyk
version:
   1.0

Method Summary
void disable()
     Sets the database backend state to disable.
void disableRead()
     Disables the database backend for reads.
void disableWrite()
     Disables the database backend for writes.
void enableRead()
     Enables the database backend for reads.
void enableWrite()
     Enables the database backend for writes.
List getActiveTransactions()
     Returns the list of active transactions for this backend.
String[] getColumnsNames(String tableName)
     Gets the names of the columns.
String getConnectionTestStatement()
     Returns the SQL statement to use to check the connection validity.
String getDriverClassName()
     Returns the database native JDBC driver class name.
String getDriverPath()
     Returns the driver path.
String getLastKnownCheckpoint()
     Returns the lastKnownCheckpoint value.
String getLockInfo(String tableName)
     Gets a description of the given table locks.
String getName()
     Returns the backend logical name.
List getPendingRequestsDescription(int count, boolean fromFirst, boolean clone)
     Returns the list of pending requests for this backend.
String getSchemaXml(boolean expandSchema)
     The getXml() method does not return the schema if it is not static anymore, to avoid confusion between static and dynamic schema.
String getState()
     Returns a description of the state of the backend
See Also:   org.continuent.sequoia.common.jmx.notifications.SequoiaNotificationList a string description of the state.
int getStateValue()
     Return the integer value corresponding to the state of the backend.
String[] getStoredProceduresNames()
     Lists all stored procedures in this schema.
String[] getTablesNames()
     Gets the names of the tables.
String getURL()
     Returns the JDBC URL used to access the database.
String getXml()
     Return a string description of the backend in xml format.
boolean isDisabled()
     Is the backend completely disabled ? This usually means it has a known state with a checkpoint associated to it.
boolean isInitialized()
     Tests if this backend is enabled (active and synchronized).
boolean isJDBCConnected()

boolean isReadEnabled()
     Tests if this backend is read enabled (active and synchronized).
boolean isSchemaStatic()

boolean isWriteEnabled()
     Tests if this backend is write enabled (active and synchronized).

Method Detail
disable
void disable()(Code)
Sets the database backend state to disable. This state is just an indication and it has no semantic effect. It is up to the request manager (especially the load balancer) to ensure that no more requests are sent to this backend.

disableRead
void disableRead()(Code)
Disables the database backend for reads. This does not affect write ability

disableWrite
void disableWrite()(Code)
Disables the database backend for writes. This does not affect read ability although the backend will not be coherent anymore as soon as a write as occured. This should be used in conjunction with a checkpoint to recover missing writes.

enableRead
void enableRead()(Code)
Enables the database backend for reads. This method should only be called when the backend is synchronized with the others.

enableWrite
void enableWrite()(Code)
Enables the database backend for writes. This method should only be called when the backend is synchronized with the others.

getActiveTransactions
List getActiveTransactions()(Code)
Returns the list of active transactions for this backend. List of Long, corresponding toactive transaction identifier.

getColumnsNames
String[] getColumnsNames(String tableName)(Code)
Gets the names of the columns.
Parameters:
  tableName - fully qualified name of the table (with. prefix) an array containing the columns names, or null if tableName is nota valid table name.

getConnectionTestStatement
String getConnectionTestStatement()(Code)
Returns the SQL statement to use to check the connection validity. a String containing a SQL statement

getDriverClassName
String getDriverClassName()(Code)
Returns the database native JDBC driver class name. the driver class name

getDriverPath
String getDriverPath()(Code)
Returns the driver path. the driver path

getLastKnownCheckpoint
String getLastKnownCheckpoint()(Code)
Returns the lastKnownCheckpoint value. Returns the lastKnownCheckpoint.

getLockInfo
String getLockInfo(String tableName)(Code)
Gets a description of the given table locks.
Parameters:
  tableName - fully qualified name of the table (with. prefix) a (localized) string containing either "No locks" or "Locked by"

getName
String getName()(Code)
Returns the backend logical name. the backend logical name

getPendingRequestsDescription
List getPendingRequestsDescription(int count, boolean fromFirst, boolean clone)(Code)
Returns the list of pending requests for this backend.
Parameters:
  count - number of requests to retrieve, if 0, return all.
Parameters:
  fromFirst - count the request from first if true, or from last iffalse
Parameters:
  clone - should clone the pending request if true, block it if false List of String description ofeach request.

getSchemaXml
String getSchemaXml(boolean expandSchema)(Code)
The getXml() method does not return the schema if it is not static anymore, to avoid confusion between static and dynamic schema. This method returns a static view of the schema, whatever the dynamic precision is.
Parameters:
  expandSchema - if we should force the schema to be expanded. This isneeded as the default getXml should call this method. an xml formatted string

getState
String getState()(Code)
Returns a description of the state of the backend
See Also:   org.continuent.sequoia.common.jmx.notifications.SequoiaNotificationList a string description of the state. Can be enabled, disabled,recovering, backuping ...

getStateValue
int getStateValue()(Code)
Return the integer value corresponding to the state of the backend. The values are defined in BackendState int value
See Also:   org.continuent.sequoia.common.jmx.management.BackendState

getStoredProceduresNames
String[] getStoredProceduresNames()(Code)
Lists all stored procedures in this schema. Note: There is an issue with stored procedures with same name (but different parameters): one will appear with 0 parameters, the 2nd with the total parameters from the 2 stored proc. See SEQUOIA-296 for more info An array of Strings containing all stored procedure names (onearray entry per procedure)

getTablesNames
String[] getTablesNames()(Code)
Gets the names of the tables. NOTE: The returned array will contain only one entry per actual table prefixed by the schema name + "." the names as an array of Strings, or an empty arrayif no tables were found

getURL
String getURL()(Code)
Returns the JDBC URL used to access the database. a JDBC URL

getXml
String getXml()(Code)
Return a string description of the backend in xml format. This does not include the schema description if the dynamic precision is not set to static. an xml formatted string

isDisabled
boolean isDisabled()(Code)
Is the backend completely disabled ? This usually means it has a known state with a checkpoint associated to it. true if the backend is disabled

isInitialized
boolean isInitialized() throws Exception(Code)
Tests if this backend is enabled (active and synchronized). true if this backend is enabled
throws:
  Exception - if an error occurs

isJDBCConnected
boolean isJDBCConnected()(Code)
Is the backend accessible ? true if a jdbc connection is still possible from thecontroller, false if connectionTestStatement failed

isReadEnabled
boolean isReadEnabled()(Code)
Tests if this backend is read enabled (active and synchronized). true if this backend is enabled.

isSchemaStatic
boolean isSchemaStatic()(Code)
Returns the schemaIsStatic.

isWriteEnabled
boolean isWriteEnabled()(Code)
Tests if this backend is write enabled (active and synchronized). true if this backend is enabled.

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