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java.lang.Object com.metamatrix.query.optimizer.xquery.XQueryPlanner
public class XQueryPlanner
Planner for XQuery execution plans
Constructor Summary | |
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XQueryPlanner()
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Method Summary | |
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void |
generateCanonical(CommandTreeNode node,
QueryMetadataInterface metadata,
AnalysisRecord analysisRecord,
CommandContext context)
Requests that the planner generate the canonical plan(s) for the Command object(s) represented by the CommandTreeNode tree parameter. |
ProcessorPlan |
optimize(CommandTreeNode node,
IDGenerator idGenerator,
QueryMetadataInterface metadata,
CapabilitiesFinder capFinder,
AnalysisRecord analysisRecord,
CommandContext context)
Allows the planner a chance to optimize the canonical plan(s) stored in the CommandTreeNode tree. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public XQueryPlanner()
Method Detail |
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public void generateCanonical(CommandTreeNode node, QueryMetadataInterface metadata, AnalysisRecord analysisRecord, CommandContext context) throws QueryPlannerException, QueryMetadataException, MetaMatrixComponentException
CommandPlanner
Requests that the planner generate the canonical plan(s) for the Command object(s) represented by the CommandTreeNode tree parameter. The canonical plan(s) should be added to the node(s) of the tree rooted at rootNode.
It may or may not make sense for a specific implementation of this
Class to create a canonical plan. It may be that all planning can be done
during the call to CommandPlanner.optimize(com.metamatrix.query.optimizer.CommandTreeNode, com.metamatrix.core.id.IDGenerator, com.metamatrix.query.metadata.QueryMetadataInterface, com.metamatrix.query.optimizer.capabilities.CapabilitiesFinder, com.metamatrix.query.analysis.AnalysisRecord, com.metamatrix.query.util.CommandContext)
generateCanonical
in interface CommandPlanner
node
- tree of CommandTreeNode object(s) rooted at rootNode
QueryPlannerException
- indicating a problem in planning
MetaMatrixComponentException
- indicating an unexpected exception
QueryMetadataException
CommandPlanner.generateCanonical(com.metamatrix.query.optimizer.CommandTreeNode, com.metamatrix.query.metadata.QueryMetadataInterface, com.metamatrix.query.analysis.AnalysisRecord, CommandContext)
public ProcessorPlan optimize(CommandTreeNode node, IDGenerator idGenerator, QueryMetadataInterface metadata, CapabilitiesFinder capFinder, AnalysisRecord analysisRecord, CommandContext context) throws QueryPlannerException, QueryMetadataException, MetaMatrixComponentException
CommandPlanner
optimize
in interface CommandPlanner
node
- root of a tree (or subtree) of CommandTreeNode objects, each of
which should have its canonical planmetadata
- source of metadatacapFinder
- Class usable to find the connector capabilities for a particular model
QueryPlannerException
- indicating a problem in planning
QueryMetadataException
- indicating an exception in accessing the metadata
MetaMatrixComponentException
- indicating an unexpected exceptionCommandPlanner.optimize(com.metamatrix.query.optimizer.CommandTreeNode, com.metamatrix.core.id.IDGenerator, com.metamatrix.query.metadata.QueryMetadataInterface, com.metamatrix.query.optimizer.capabilities.CapabilitiesFinder, com.metamatrix.query.analysis.AnalysisRecord, CommandContext)
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