com.metamatrix.query.processor.relational
Class DupRemoveNode

java.lang.Object
  com.metamatrix.query.processor.relational.RelationalNode
      com.metamatrix.query.processor.relational.SortNode
          com.metamatrix.query.processor.relational.DupRemoveNode

All Implemented Interfaces:

Describable, java.lang.Cloneable

public class DupRemoveNode
extends SortNode

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

DupRemoveNode(int nodeID)

Method Summary

java.lang.Object	clone() All the implementation of Cloneable interface need to implement clone() method.
java.util.Map	getDescriptionProperties() Get a description as a set of properties of primitive types such as String, Integer, etc.
void	open()
void	reset()

Methods inherited from class com.metamatrix.query.processor.relational.SortNode

close, collectionPhase, copy, getNodeString, getSortElements, nextBatchDirect, setRemoveDuplicates, setSortElements

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, getNodeStatistics, getParent, initialize, isBatchFull, isClosed, nextBatch, nodeToString, projectTuple, pullBatch, 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

DupRemoveNode

public DupRemoveNode(int nodeID)

Method Detail

reset

public void reset()

Overrides:

reset in class SortNode

open

public void open()
          throws MetaMatrixComponentException,
                 MetaMatrixProcessingException

Overrides:

open in class SortNode

Throws:

MetaMatrixComponentException

MetaMatrixProcessingException

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.

Overrides:

clone in class SortNode

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 SortNode

Returns:

Map of properties