com.metamatrix.query.processor.relational
Class AccessNode

java.lang.Object
  extended by com.metamatrix.query.processor.relational.RelationalNode
      extended by com.metamatrix.query.processor.relational.AccessNode
All Implemented Interfaces:
Describable, java.lang.Cloneable
Direct Known Subclasses:
DependentAccessNode, DependentProcedureAccessNode

public class AccessNode
extends RelationalNode


Field Summary
 
Fields inherited from interface com.metamatrix.query.processor.Describable
PROP_BINDINGS, PROP_CHILDREN, PROP_CONDITIONS, PROP_CRITERIA, PROP_DATA_COL, PROP_DEFAULT, PROP_DEFAULT_PROGRAM, PROP_ELSE, PROP_ENCODING, PROP_EXECUTION_PLAN, PROP_EXPRESSION, PROP_FORMATTED, PROP_GROUP, PROP_GROUP_COLS, PROP_IN_MEMORY, PROP_INTO_GROUP, PROP_IS_STAGING, PROP_JOIN_CRITERIA, PROP_JOIN_STRATEGY, PROP_JOIN_TYPE, PROP_MESSAGE, PROP_MODEL_NAME, PROP_NAMESPACE, PROP_NAMESPACE_DECL, PROP_NODE_COST_ESTIMATES, PROP_NODE_STATS_LIST, PROP_NODE_STATS_PROPS, PROP_OPTIONAL, PROP_OUTPUT_COLS, PROP_PROGRAM, PROP_PROGRAMS, PROP_RECURSE_DIR, PROP_REMOVE_DUPS, PROP_RESULT_SET, PROP_ROW_LIMIT, PROP_ROW_OFFSET, PROP_SELECT_COLS, PROP_SORT_COLS, PROP_SQL, PROP_TAG, PROP_THEN, PROP_TYPE, PROP_VARIABLE
 
Constructor Summary
AccessNode(int nodeID)
           
 
Method Summary
 java.lang.Object clone()
          All the implementation of Cloneable interface need to implement clone() method.
 void close()
           
protected  void copy(AccessNode source, AccessNode target)
           
 Command getCommand()
           
 java.lang.String getConnectorBindingId()
           
 java.util.Map getDescriptionProperties()
          Get a description as a set of properties of primitive types such as String, Integer, etc.
 java.lang.String getModelName()
           
protected  void getNodeString(java.lang.StringBuffer str)
           
protected  boolean hasNextCommand()
           
 TupleBatch nextBatchDirect()
          Template method for subclasses to implement.
 void open()
           
protected  boolean prepareNextCommand(Command atomicCommand)
           
protected  boolean processCommandsIndividually()
           
 void reset()
           
 void setCommand(Command command)
           
 void setConnectorBindingId(java.lang.String connectorBindingId)
           
 void setModelName(java.lang.String name)
           
 void setShouldEvaluateExpressions(boolean shouldEvaluate)
           
 
Methods inherited from class com.metamatrix.query.processor.relational.RelationalNode
addBatchRow, addChild, copy, createLookupMap, getBatchSize, getBufferManager, getChildDescriptionProperties, getChildPlans, getChildren, getClassName, getConnectionID, getContext, getDataManager, getElements, getEstimateNodeCardinality, getID, getLanguageObjects, getNodeStatistics, getParent, hasPendingRows, initialize, isBatchFull, isClosed, nextBatch, nodeToString, projectTuple, pullBatch, setContext, setElements, setEstimateDepAccessCardinality, setEstimateDepJoinCost, setEstimateJoinCost, setEstimateNodeCardinality, setEstimateNodeSetSize, setID, setParent, terminateBatches, toString
 
Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

AccessNode

public AccessNode(int nodeID)
Method Detail

reset

public void reset()
Overrides:
reset in class RelationalNode

setCommand

public void setCommand(Command command)

getCommand

public Command getCommand()

setModelName

public void setModelName(java.lang.String name)

getModelName

public java.lang.String getModelName()

setShouldEvaluateExpressions

public void setShouldEvaluateExpressions(boolean shouldEvaluate)

open

public void open()
          throws MetaMatrixComponentException,
                 MetaMatrixProcessingException
Overrides:
open in class RelationalNode
Throws:
MetaMatrixComponentException
MetaMatrixProcessingException

prepareNextCommand

protected boolean prepareNextCommand(Command atomicCommand)
                              throws MetaMatrixComponentException,
                                     MetaMatrixProcessingException
Throws:
MetaMatrixComponentException
MetaMatrixProcessingException

nextBatchDirect

public TupleBatch nextBatchDirect()
                           throws BlockedException,
                                  MetaMatrixComponentException,
                                  MetaMatrixProcessingException
Description copied from class: RelationalNode
Template method for subclasses to implement.

Specified by:
nextBatchDirect in class RelationalNode
Returns:
Throws:
BlockedException
MetaMatrixComponentException
MetaMatrixProcessingException - if exception related to user input occured

processCommandsIndividually

protected boolean processCommandsIndividually()

hasNextCommand

protected boolean hasNextCommand()

close

public void close()
           throws MetaMatrixComponentException
Overrides:
close in class RelationalNode
Throws:
MetaMatrixComponentException

getNodeString

protected void getNodeString(java.lang.StringBuffer str)
Overrides:
getNodeString in class RelationalNode

clone

public java.lang.Object clone()
Description copied from class: RelationalNode
All the implementation of Cloneable interface need to implement clone() method. The plan is only clonable in the pre-execution stage, not the execution state (things like program state, result sets, etc). It's only safe to call that method in between query processings, in other words, it's only safe to call clone() on a plan after nextTuple() returns null, meaning the plan has finished processing.

Specified by:
clone in class RelationalNode

copy

protected void copy(AccessNode source,
                    AccessNode target)

getDescriptionProperties

public java.util.Map getDescriptionProperties()
Description copied from interface: Describable
Get a description as a set of properties of primitive types such as String, Integer, etc.

Specified by:
getDescriptionProperties in interface Describable
Overrides:
getDescriptionProperties in class RelationalNode
Returns:
Map of properties

getConnectorBindingId

public java.lang.String getConnectorBindingId()

setConnectorBindingId

public void setConnectorBindingId(java.lang.String connectorBindingId)


Copyright © 2009. All Rights Reserved.