net.sf.farrago.session
Class FarragoSessionRuntimeParams

java.lang.Object
  net.sf.farrago.session.FarragoSessionRuntimeParams

public class FarragoSessionRuntimeParams
extends Object

FarragoSessionRuntimeParams bundles together the large number of constructor parameters needed to instantiate FarragoSessionRuntimeContext.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/session/FarragoSessionRuntimeParams.java#21 $

Author:

John V. Sichi

Field Summary

FarragoObjectCache	codeCache Cache for Fennel tuple streams.
long	currentTime The current time associated with the statement.
Object[]	dynamicParamValues Array of values bound to dynamic parameters by position.
FennelTxnContext	fennelTxnContext Fennel context for transactions.
FarragoSessionIndexMap	indexMap Map of indexes which might be accessed.
boolean	isDml Whether the context is for a DML statement.
Map<String,RelDataType>	iterCalcTypeMap Map from IterCalcRel tag to row type.
FarragoPluginClassLoader	pluginClassLoader If no session is available to provide the plugin classloader, use this classloader instead.
FarragoRepos	repos Repos storing object definitions.
Map<String,RelDataType>	resultSetTypeMap Map from result set name to row type.
FarragoSession	session Controlling session.
FarragoSessionVariables	sessionVariables Connection-dependent settings.
FarragoObjectCache	sharedDataWrapperCache FarragoObjectCache to use for caching FarragoMedDataWrapper instances.
long	stmtId An identifier for the executable statement id.
FarragoStreamFactoryProvider	streamFactoryProvider FarragoStreamFactoryProvider to use for registering stream factories.
Map<String,FarragoObjectCache.Entry>	txnCodeCache Txn-private cache for Fennel tuple streams, or null if streams don't need to be pinned by txn.
FarragoWarningQueue	warningQueue Queue on which warnings should be posted, or null if runtime context should create a private queue.

Constructor Summary

FarragoSessionRuntimeParams()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

session

public FarragoSession session

Controlling session.

pluginClassLoader

public FarragoPluginClassLoader pluginClassLoader

If no session is available to provide the plugin classloader, use this classloader instead.

repos

public FarragoRepos repos

Repos storing object definitions.

codeCache

public FarragoObjectCache codeCache

Cache for Fennel tuple streams.

txnCodeCache

public Map<String,FarragoObjectCache.Entry> txnCodeCache

Txn-private cache for Fennel tuple streams, or null if streams don't need to be pinned by txn.

fennelTxnContext

public FennelTxnContext fennelTxnContext

Fennel context for transactions.

indexMap

public FarragoSessionIndexMap indexMap

Map of indexes which might be accessed.

dynamicParamValues

public Object[] dynamicParamValues

Array of values bound to dynamic parameters by position.

sessionVariables

public FarragoSessionVariables sessionVariables

Connection-dependent settings.

sharedDataWrapperCache

public FarragoObjectCache sharedDataWrapperCache

FarragoObjectCache to use for caching FarragoMedDataWrapper instances.

streamFactoryProvider

public FarragoStreamFactoryProvider streamFactoryProvider

FarragoStreamFactoryProvider to use for registering stream factories.

isDml

public boolean isDml

Whether the context is for a DML statement.

resultSetTypeMap

public Map<String,RelDataType> resultSetTypeMap

Map from result set name to row type.

iterCalcTypeMap

public Map<String,RelDataType> iterCalcTypeMap

Map from IterCalcRel tag to row type. If a mapping is available, it associates the tag with the type of a table being modified. It would be possible to infer, for example, that result column 1 was being used to insert into a column called "EMPNO".

stmtId

public long stmtId

An identifier for the executable statement id. This parameter assumes there will be a one to one mapping from statement to context.

warningQueue

public FarragoWarningQueue warningQueue

Queue on which warnings should be posted, or null if runtime context should create a private queue.

currentTime

public long currentTime

The current time associated with the statement. If set to zero, this indicates that no current time has yet been set for the statement.

Constructor Detail

FarragoSessionRuntimeParams

public FarragoSessionRuntimeParams()