org.apache.hadoop.hive.metastore.parser

Class ExpressionTree.TreeVisitor

java.lang.Object

org.apache.hadoop.hive.metastore.parser.ExpressionTree.TreeVisitor

Enclosing class:

ExpressionTree

public static class ExpressionTree.TreeVisitor
extends Object

Depth first traversal of ExpressionTree. The users should override the subset of methods to do their stuff.

Constructor Summary

Constructors

Constructor and Description
TreeVisitor()

Method Summary

Modifier and Type	Method and Description
protected void	beginTreeNode(ExpressionTree.TreeNode node)
protected void	endTreeNode(ExpressionTree.TreeNode node)
protected void	midTreeNode(ExpressionTree.TreeNode node)
protected boolean	shouldStop()
protected void	visit(ExpressionTree.LeafNode node)

Methods inherited from class java.lang.Object

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

Constructor Detail

TreeVisitor

public TreeVisitor()

Method Detail

beginTreeNode

protected void beginTreeNode(ExpressionTree.TreeNode node)
                      throws org.apache.hadoop.hive.metastore.api.MetaException

Throws:

org.apache.hadoop.hive.metastore.api.MetaException

midTreeNode

protected void midTreeNode(ExpressionTree.TreeNode node)
                    throws org.apache.hadoop.hive.metastore.api.MetaException

Throws:

org.apache.hadoop.hive.metastore.api.MetaException

endTreeNode

protected void endTreeNode(ExpressionTree.TreeNode node)
                    throws org.apache.hadoop.hive.metastore.api.MetaException

Throws:

org.apache.hadoop.hive.metastore.api.MetaException

visit

protected void visit(ExpressionTree.LeafNode node)
              throws org.apache.hadoop.hive.metastore.api.MetaException

Throws:

org.apache.hadoop.hive.metastore.api.MetaException

shouldStop

protected boolean shouldStop()