Package com.streambase.liveview.server.table.plugin

Class TableProviderControlImpl

java.lang.Object

com.streambase.liveview.server.table.plugin.TableProviderControlImpl

All Implemented Interfaces:

TableNameMapper, TableProviderControl, TableProviderParameters

public class TableProviderControlImpl
extends Object
implements TableProviderControl, TableNameMapper, TableProviderParameters

Constructor Summary

Constructors

Constructor	Description
TableProviderControlImpl(String id, TableProvider provider, TableProviderManager manager, com.streambase.liveview.internal.protocol.jaxb.ExternalServerConnectionType externalServerConnection, int failedRetryAttempts)

Method Summary

Modifier and Type	Method	Description
void	clearRetryCount()	This will set the failedRetryCount to zero.
void	delete(String remappedName)	Delete the table with this ID.
void	disableAllAndRestart()	When a condition arises where the table provider is unable to service any of tables, but it does not wish to have its tables removed from the system.
double	getDouble(String parameterKey, double defaultValue)	Get the first parameter with this key, interpreted as an double.
com.streambase.liveview.internal.protocol.jaxb.ExternalServerConnectionType	getExternalServerConnection()
int	getFailedRetryAttempts()
String	getId()
int	getInt(String parameterKey, int defaultValue)	Get the first parameter with this key, interpreted as an integer.
Set<String>	getKeys()	Get all the keys that were specified.
List<String>	getMultivalue(String parameterKey)	For keys that might appear more than once, this will return all of the values for that key.
TableProvider	getProvider()
TableProviderStatus	getStatus()
String	getString(String parameterKey, String defaultValue)	Get the first parameter with this key, trimmed.
com.streambase.liveview.server.table.CatalogedTable	getTable(String remappedName)	Find the Table with this ID.
TablePropertiesConfigurationWrapper	getTableFilteredAliases(String name)	This will match the name against the selector.
Collection<com.streambase.liveview.server.table.CatalogedTable>	getTables()	Get a collection of all the CatalogedTables that belong to your TableProvider.
long	getWakeup()
void	insert(com.streambase.liveview.server.table.CatalogedTable catalogedTable)	Insert this Table.
File	locateFile(String filename, boolean required)	This will attempt to locate a file within the project.
String	remap(String name)	check and remap a name.
void	setEnabled(String tableId, boolean enabled)	Change the enabled state of an existing table.
void	setStartThread(Thread thread)
void	setStatus(TableProviderStatus status)
void	shutMeDown()	Shut down the associated TableProvider.
void	update(com.streambase.liveview.server.table.CatalogedTable catalogedTable)	Update this Table.
void	upsert(com.streambase.liveview.server.table.CatalogedTable catalogedTable)	Insert or Update the Table, depending on whether or not it already exists.

Methods inherited from class java.lang.Object

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

Constructor Details

TableProviderControlImpl

public TableProviderControlImpl(String id,
 TableProvider provider,
 TableProviderManager manager,
 com.streambase.liveview.internal.protocol.jaxb.ExternalServerConnectionType externalServerConnection,
 int failedRetryAttempts)

Method Details

setEnabled

public void setEnabled(String tableId,
 boolean enabled)
                throws LiveViewException

Description copied from interface: TableProviderControl

Change the enabled state of an existing table. This is a shortcut over update when you only need to enable or disable the Table. However, it will not update anything else in the Table.

Specified by:

setEnabled in interface TableProviderControl

Parameters:

tableId - The ID of the Table to change.

enabled - The new state to change it to.

Throws:

LiveViewException - if attempting to set a table that does not exist enabled. (Setting a non-existant table disabled is ignored.)

getTable

public com.streambase.liveview.server.table.CatalogedTable getTable(String remappedName)

Description copied from interface: TableProviderControl

Find the Table with this ID. If one doesn't exist, then it will return null.

Specified by:

getTable in interface TableProviderControl

Parameters:

remappedName - The ID by which the table is saved (i.e. the remapped name)

Returns:

null if no Table has that name.

getTables

public Collection<com.streambase.liveview.server.table.CatalogedTable> getTables()

Description copied from interface: TableProviderControl

Get a collection of all the CatalogedTables that belong to your TableProvider. This list it returns is a copy of the real list, so it will not reflect any changes you might make.

Specified by:

getTables in interface TableProviderControl

Returns:

all the CatalogedTables that belong to your TableProvider

insert

public void insert(com.streambase.liveview.server.table.CatalogedTable catalogedTable)

Description copied from interface: TableProviderControl

Insert this Table. It is an error if a Table with that ID already exists.

Specified by:

insert in interface TableProviderControl

Parameters:

catalogedTable - The Table to insert. Note that the catalogedTable will be copied so further changes to it will not affect anything until you update or upsert.

upsert

public void upsert(com.streambase.liveview.server.table.CatalogedTable catalogedTable)

Description copied from interface: TableProviderControl

Insert or Update the Table, depending on whether or not it already exists.

Specified by:

upsert in interface TableProviderControl

Parameters:

catalogedTable - The Table to insert. Note that the catalogedTable will be copied so further changes to it will not affect anything until you update or upsert.

update

public void update(com.streambase.liveview.server.table.CatalogedTable catalogedTable)

Description copied from interface: TableProviderControl

Update this Table. It is an error if a Table with that ID does not already exist.

Specified by:

update in interface TableProviderControl

Parameters:

catalogedTable - The Table to insert. Note that the catalogedTable will be copied so further changes to it will not affect anything until you update or upsert.

delete

public void delete(String remappedName)

Description copied from interface: TableProviderControl

Delete the table with this ID. It is an error if a Table with that ID does not already exist.

Specified by:

delete in interface TableProviderControl

Parameters:

remappedName -

shutMeDown

public void shutMeDown()

Description copied from interface: TableProviderControl

Shut down the associated TableProvider. This is called by the TableProvider upon his learning that his back end is no longer available. These steps will happen on your behalf: - Your tables will all be marked as disabled (which will prevent new queries) - All your active QueryListeners will be closed. This will cause your table's removeListener method to be called. - Your shutdown method will be called - (If you haven't already done so) all your tables will be removed from the Table List (as if you had called delete on them). - If requested in the LVConf or service call, after the specified delay a new instance of your TableProvider will be started up again with the same arguments.

Specified by:

shutMeDown in interface TableProviderControl

getProvider

public TableProvider getProvider()

getId

public String getId()

getStatus

public TableProviderStatus getStatus()

setStatus

public void setStatus(TableProviderStatus status)

getWakeup

public long getWakeup()

getFailedRetryAttempts

public int getFailedRetryAttempts()

getExternalServerConnection

public com.streambase.liveview.internal.protocol.jaxb.ExternalServerConnectionType getExternalServerConnection()

getString

public String getString(String parameterKey,
 String defaultValue)

Description copied from interface: TableProviderParameters

Get the first parameter with this key, trimmed. Note that if the value exists but is empty, it will return the empty string, not the defaultValue.

Specified by:

getString in interface TableProviderParameters

Parameters:

parameterKey -

defaultValue -

Returns:

String value of the first parameter with that key, or the defaultValue if there weren't any.

getInt

public int getInt(String parameterKey,
 int defaultValue)

Description copied from interface: TableProviderParameters

Get the first parameter with this key, interpreted as an integer. If the parameter does not exist, or if it can't be interpreted as an integer, return the defaultValue

Specified by:

getInt in interface TableProviderParameters

Parameters:

parameterKey -

defaultValue -

Returns:

int value of the first parameter with that key, or the defaultValue if there weren't any or if it isn't an int.

getDouble

public double getDouble(String parameterKey,
 double defaultValue)

Description copied from interface: TableProviderParameters

Get the first parameter with this key, interpreted as an double. If the parameter does not exist, or if it can't be interpreted as a double, return the defaultValue

Specified by:

getDouble in interface TableProviderParameters

Parameters:

parameterKey -

defaultValue -

Returns:

double value of the first parameter with that key, or the defaultValue if there weren't any or if it isn't a double.

getMultivalue

public List<String> getMultivalue(String parameterKey)

Description copied from interface: TableProviderParameters

For keys that might appear more than once, this will return all of the values for that key.

Specified by:

getMultivalue in interface TableProviderParameters

Parameters:

parameterKey -

Returns:

a list, possibly empty, of all values that had that key, in the order that they existed in the Parameters.

getKeys

public Set<String> getKeys()

Description copied from interface: TableProviderParameters

Get all the keys that were specified.

Specified by:

getKeys in interface TableProviderParameters

Returns:

remap

public String remap(String name)

Description copied from interface: TableNameMapper

check and remap a name. This will match the name against the selectors. Returns null if none matched, or the remapped string if one did. Note that having no mappings (either because mappings is null or empty) is legitimate, and implies a mapping of (.*) to %s (i.e. everything passes and maps to itself).

Specified by:

remap in interface TableNameMapper

Parameters:

name - the name to be remapped

Returns:

null for no match or the remapped name.

getTableFilteredAliases

public TablePropertiesConfigurationWrapper getTableFilteredAliases(String name)

Description copied from interface: TableNameMapper

This will match the name against the selector. Returns null if none matched, or TablePropertiesConfigurationWrapper instance with re-mapped string if one did. Note that having no mappings (either because mappings is null or empty) is legitimate, and implies a mapping of (.*) to %s (i.e. everything passes and maps to itself).

Specified by:

getTableFilteredAliases in interface TableNameMapper

Parameters:

name - is the name to be remapped and be wrapped in TablePropertiesConfigurationWrapper

Returns:

null for no match or TablePropertiesConfigurationWrapper with remapped name and a list of FilteredAlias instances for this table name

clearRetryCount

public void clearRetryCount()

Description copied from interface: TableProviderControl

This will set the failedRetryCount to zero. The failedRetryCount is compared to the MaxRetryCount value that was set by the user in the LVConf (or the web service). This method will be called automatically if your start() method returns normally. However, if you keep the start thread and use it to poll your server (which you are welcome to do), then you should call this method yourself once you've successfully connected.

Specified by:

clearRetryCount in interface TableProviderControl

setStartThread

public void setStartThread(Thread thread)

disableAllAndRestart

public void disableAllAndRestart()

Description copied from interface: TableProviderControl

When a condition arises where the table provider is unable to service any of tables, but it does not wish to have its tables removed from the system. This method will mark the providers tables as disabled and schedule a restart, if the provider has been so configured. The table provider is responsible for closing any active queries if it can no longer service them.

Specified by:

disableAllAndRestart in interface TableProviderControl

locateFile

public File locateFile(String filename,
 boolean required)
                throws LiveViewException

Description copied from interface: TableProviderControl

This will attempt to locate a file within the project.

Specified by:

locateFile in interface TableProviderControl

Parameters:

filename - indicates a file in the LiveView project

required - if true, this method will throw an exception if the file can't be found.

Returns:

reference to the actual file, or null if it could not be found (or filename was empty) and required was false.

Throws:

LiveViewException - thrown if the required flag was true and either filename was empty or it couldn't find the file.