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java.lang.Object com.metamatrix.query.processor.relational.RelationalNode com.metamatrix.query.processor.relational.NullNode
public class NullNode
Field Summary |
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Constructor Summary | |
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NullNode(int nodeID)
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Method Summary | |
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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. |
protected void |
getNodeString(java.lang.StringBuffer str)
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TupleBatch |
nextBatchDirect()
Template method for subclasses to implement. |
Methods inherited from class com.metamatrix.query.processor.relational.RelationalNode |
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addBatchRow, addChild, close, copy, createLookupMap, getBatchSize, getBufferManager, getChildDescriptionProperties, getChildPlans, getChildren, getClassName, getConnectionID, getContext, getDataManager, getElements, getEstimateNodeCardinality, getID, getLanguageObjects, getNodeStatistics, getParent, hasPendingRows, initialize, isBatchFull, isClosed, nextBatch, nodeToString, open, projectTuple, pullBatch, reset, setContext, setElements, setEstimateDepAccessCardinality, setEstimateDepJoinCost, setEstimateJoinCost, setEstimateNodeCardinality, setEstimateNodeSetSize, setID, setParent, terminateBatches, toString |
Methods inherited from class java.lang.Object |
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equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public NullNode(int nodeID)
Method Detail |
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public TupleBatch nextBatchDirect() throws MetaMatrixComponentException
RelationalNode
nextBatchDirect
in class RelationalNode
BlockedException
MetaMatrixComponentException
protected void getNodeString(java.lang.StringBuffer str)
getNodeString
in class RelationalNode
public java.lang.Object clone()
RelationalNode
clone
in class RelationalNode
public java.util.Map getDescriptionProperties()
Describable
getDescriptionProperties
in interface Describable
getDescriptionProperties
in class RelationalNode
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