com.metamatrix.query.optimizer.relational
Class MergeTreeNodeProcessor

java.lang.Object
  com.metamatrix.query.optimizer.relational.MergeTreeNodeProcessor

All Implemented Interfaces:

CommandTreeProcessor

public class MergeTreeNodeProcessor
extends java.lang.Object
implements CommandTreeProcessor

Merge neighboring relational nodes by combining canonical plans

Constructor Summary

MergeTreeNodeProcessor()

Method Summary

CommandTreeNode

process(CommandTreeNode node, QueryMetadataInterface metadata) Do any necessary processing on the given tree of command tree nodes; return the root of the modified tree.

Methods inherited from class java.lang.Object

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

Constructor Detail

MergeTreeNodeProcessor

public MergeTreeNodeProcessor()

Method Detail

process

public CommandTreeNode process(CommandTreeNode node,
                               QueryMetadataInterface metadata)
                        throws QueryMetadataException,
                               MetaMatrixComponentException

Description copied from interface: CommandTreeProcessor

Do any necessary processing on the given tree of command tree nodes; return the root of the modified tree.

Specified by:

process in interface CommandTreeProcessor

Parameters:

node - root of the tree of nodes

metadata - source of metadata

Returns:

root of the modified tree, or just the root param if no modification occurred.

Throws:

QueryMetadataException

MetaMatrixComponentException

See Also:

com.metamatrix.query.optimizer.CommandTreeProcessor#process(com.metamatrix.query.optimizer.CommandTreeNode)