org.teiid.query.optimizer.xml
Class XMLPlanner

java.lang.Object
  org.teiid.query.optimizer.xml.XMLPlanner

All Implemented Interfaces:

CommandPlanner

public final class XMLPlanner
extends java.lang.Object
implements CommandPlanner

This prepares an XMLPlan from a Mapping Document structure of MappingNodes.

Constructor Summary

XMLPlanner()
Default constructor.

Method Summary

ProcessorPlan

optimize(Command command, 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

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

Constructor Detail

XMLPlanner

public XMLPlanner()

Default constructor. Since this object is stateless the constructor has nothing to do.

Method Detail

optimize

public ProcessorPlan optimize(Command command,
                              IDGenerator idGenerator,
                              QueryMetadataInterface metadata,
                              CapabilitiesFinder capFinder,
                              AnalysisRecord analysisRecord,
                              CommandContext context)
                       throws QueryPlannerException,
                              QueryMetadataException,
                              TeiidComponentException

Description copied from interface: CommandPlanner

Allows the planner a chance to optimize the canonical plan(s) stored in the CommandTreeNode tree. This method should be called in a bottom-up manner; from leaf nodes up to the root node.

Specified by:

optimize in interface CommandPlanner

Parameters:

command - TODO

metadata - source of metadata

capFinder - Class usable to find the connector capabilities for a particular model

Returns:

ProcessorPlan implementation specific to the CommandPlanner

Throws:

QueryPlannerException - indicating a problem in planning

QueryMetadataException - indicating an exception in accessing the metadata

TeiidComponentException - indicating an unexpected exception

See Also:

CommandPlanner.optimize(org.teiid.query.sql.lang.Command, org.teiid.core.id.IDGenerator, org.teiid.query.metadata.QueryMetadataInterface, org.teiid.query.optimizer.capabilities.CapabilitiesFinder, org.teiid.query.analysis.AnalysisRecord, org.teiid.query.util.CommandContext)