com.ibm.di.server
Class BranchingComponent

java.lang.Object
  com.ibm.di.server.AssemblyLineComponent
      com.ibm.di.server.BranchingComponent

All Implemented Interfaces:

java.util.Map

Direct Known Subclasses:

LoopComponent, SwitchComponent

public class BranchingComponent
extends AssemblyLineComponent

This class is used by the AssemblyLine for branches

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K,V>

Field Summary

protected BranchingConfig	branchingConfig The configuration
protected ParameterSubstitutionCache	psc Helper object for parameter substitutions
java.lang.Object	value The return value from script execution

Fields inherited from class com.ibm.di.server.AssemblyLineComponent

addmap, CHECKPOINT_GETS, config, connConfig, connector, connPool, END_OF_DATA, handler, HOOKS_INVOKED, imap, INITIALIZE, initializeCount, LAST_CONN, LAST_ERROR, log, modmap, name, NUM_ADD, NUM_CALLREPLY, NUM_DELETE, NUM_ERRORS, NUM_GET, NUM_GET_TRIES, NUM_GETCLIENT, NUM_GETCLIENT_TRIES, NUM_IGNORED, NUM_LOOKUP, NUM_MODIFY, NUM_NOCHANGE, NUM_SKIPPED, parent, pooledConnector, reusingConnector, SELECT, stats, SUCCESSFUL

Constructor Summary

BranchingComponent()
Constructor.

BranchingComponent(AssemblyLine parent, java.lang.String name, BranchingConfig config)
Constructor for the BranchingComponent object

Method Summary

void	add(Entry meta) Do nothing in the add method
void	add1(Entry meta) This method executes the script.
boolean	checkWillExecute(Entry work) Evaluates the expression in this branch
void	close() This method closes the script engine.
int	componentCount() Deprecated.
boolean	evaluateCondition(Entry work, BranchCondition c, int index) Returns the result of a single condition
boolean	evaluateConditions(Entry work) Returns the result of the test conditions
BaseConfiguration	getBaseConfiguration() This method returns the BaseConfiguration
int	getBranchType() Returns the branch type.
ConnectorConfig	getConfiguration() This method returns the Connector configuration
int	getType() Gets the type attribute of the BranchingComponent object
void	initialize() Initializes the component.
boolean	isExecuted() Determines whether the component has been executed.
boolean	trigger(java.lang.String oper) Calls the hook named oper.
boolean	trigger(java.lang.String oper, Entry work) Calls the hook named oper, declaring work as the corresponding bean.
boolean	trigger(java.lang.String oper, Entry work, Entry conn) Calls the hook named oper, declaring work and conn as the corresponding beans.
boolean	willExecute(Entry work) Return true or false, depending on what the expression in the branch evaluates to This method is called by the AssemblyLine.

Methods inherited from class com.ibm.di.server.AssemblyLineComponent

callreply, checkInitialize, checkTerminate, clear, componentInitialized, containsKey, containsValue, debug, delete, deleteEntry, delta, doConnectorInitialize, doConnectorTerminate, dumpEntry, dumpObjects, entrySet, executeOperation, expandParameters, get, getConfig, getConnector, getConnectorParam, getCriteria, getCurrent, getDebug, getDuplicateEntryCount, getFirstDuplicateEntry, getHandler, getLastEntry, getLastReadEntry, getLog, getName, getnext, getnext, getnextClient, getNextDuplicateEntry, getRestartInfoEntry, getSimulatingState, getStats, handleException, handleSuccess, isCheckpointRestartEnabled, isDeltaMode, isEmpty, isEnabled, isExceptionFatal, keySet, logmsg, lookup, lookup, mapEntry, modify, pushback, put, putAll, reconnect, remove, reply, resetStatus, setConnectorParam, setCriteria, setCriteria, setCurrent, setDebug, setDuplicateEntryCount, setErrorObject, setName, setRestartInfoEntry, setSimulatingState, setSuccessful, size, toString, triggerImpl, update, values, verifySchema, wasConfigurationModified, wasSuccessful

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

equals, hashCode

Field Detail

branchingConfig

protected BranchingConfig branchingConfig

The configuration

value

public java.lang.Object value

The return value from script execution

psc

protected ParameterSubstitutionCache psc

Helper object for parameter substitutions

Constructor Detail

BranchingComponent

public BranchingComponent()

Constructor.

BranchingComponent

public BranchingComponent(AssemblyLine parent,
                          java.lang.String name,
                          BranchingConfig config)
                   throws java.lang.Exception

Constructor for the BranchingComponent object

Parameters:

parent - The AssemblyLine that contains this BranchingComponent

name - The name of this BranchingComponent

config - The configuration for this BranchingComponent

Throws:

java.lang.Exception - if problem occurs

Method Detail

initialize

public void initialize()
                throws java.lang.Exception

Initializes the component.

Overrides:

initialize in class AssemblyLineComponent

Throws:

java.lang.Exception - Not really, but subclasses may throw Exceptions

close

public void close()
           throws java.lang.Exception

This method closes the script engine.

Overrides:

close in class AssemblyLineComponent

Throws:

java.lang.Exception - if problem occurs

getConfiguration

public ConnectorConfig getConfiguration()

This method returns the Connector configuration

Overrides:

getConfiguration in class AssemblyLineComponent

Returns:

null

getBaseConfiguration

public BaseConfiguration getBaseConfiguration()

This method returns the BaseConfiguration

Overrides:

getBaseConfiguration in class AssemblyLineComponent

Returns:

The configuration for this component

getType

public int getType()

Gets the type attribute of the BranchingComponent object

Overrides:

getType in class AssemblyLineComponent

Returns:

ServerConstants.TYPE_BRANCH

willExecute

public boolean willExecute(Entry work)
                    throws java.lang.Exception

Return true or false, depending on what the expression in the branch evaluates to This method is called by the AssemblyLine.

Overrides:

willExecute in class AssemblyLineComponent

Parameters:

work - The work Entry

Returns:

The boolean value of the expression

Throws:

java.lang.Exception - Any Exception that might be thrown

checkWillExecute

public boolean checkWillExecute(Entry work)
                         throws java.lang.Exception

Evaluates the expression in this branch

Parameters:

work - The work Entry

Returns:

The boolean value of the expression

Throws:

java.lang.Exception - Any Exception that might be thrown during script execution

evaluateConditions

public boolean evaluateConditions(Entry work)
                           throws java.lang.Exception

Returns the result of the test conditions

Parameters:

work - The work Entry

Returns:

The evaluation of the simple test conditions *

Throws:

java.lang.Exception - if problem occurs

evaluateCondition

public boolean evaluateCondition(Entry work,
                                 BranchCondition c,
                                 int index)
                          throws java.lang.Exception

Returns the result of a single condition

Parameters:

work - The work Entry

c - One BranchCondition

index - The number of this BranchCondition, for error messages throws Exception if the left hand side of the condition is null

Returns:

the result of the conditions

Throws:

java.lang.Exception - if problem occurs

componentCount

public int componentCount()

Deprecated.

Returns:

an int count

add

public void add(Entry meta)
         throws java.lang.Exception

Do nothing in the add method

Overrides:

add in class AssemblyLineComponent

Parameters:

meta - parameter

Throws:

java.lang.Exception - if problem occurs

add1

public void add1(Entry meta)
          throws java.lang.Exception

This method executes the script.

Parameters:

meta - the work Entry

Throws:

java.lang.Exception - if problem occurs

trigger

public boolean trigger(java.lang.String oper)

Calls the hook named oper.

Overrides:

trigger in class AssemblyLineComponent

Parameters:

oper - Name of the hook to call.

Returns:

True if the hook was executed, false if the hook is not defined or disabled.

trigger

public boolean trigger(java.lang.String oper,
                       Entry work)

Calls the hook named oper, declaring work as the corresponding bean. The trigger function calls one of the AssemblyLine hooks defined for this Connector using the provided work.

Overrides:

trigger in class AssemblyLineComponent

Parameters:

oper - Name of the hook to call.

work - This will be the work bean in the hook.

Returns:

True if the hook was executed, false if the hook is not defined or disabled.

trigger

public boolean trigger(java.lang.String oper,
                       Entry work,
                       Entry conn)

Calls the hook named oper, declaring work and conn as the corresponding beans. The trigger function calls one of the AssemblyLine hooks defined for this Connector using the provided conn/work.

Overrides:

trigger in class AssemblyLineComponent

Parameters:

oper - Name of the hook to call.

work - This will be the work bean in the hook.

conn - This will be the conn bean in the hook

Returns:

True if the hook was executed, false if the hook is not defined or disabled.

getBranchType

public int getBranchType()

Returns the branch type.

Returns:

an int representing the configuration branch type, if the configuration is null returns -1.

isExecuted

public boolean isExecuted()

Determines whether the component has been executed.

Returns:

true if the component has been executed otherwise false.