org.apache.hadoop.hive.ql.index
Class AbstractIndexHandler

java.lang.Object
  org.apache.hadoop.hive.ql.index.AbstractIndexHandler

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, HiveIndexHandler

Direct Known Subclasses:

TableBasedIndexHandler

public abstract class AbstractIndexHandler
extends Object
implements HiveIndexHandler

Abstract base class for index handlers. This is provided as insulation so that as HiveIndexHandler evolves, default implementations of new methods can be added here in order to avoid breaking existing plugin implementations.

Constructor Summary

AbstractIndexHandler()

Method Summary

boolean	checkQuerySize(long inputSize, HiveConf conf) Check the size of an input query to make sure it fits within the bounds
void	generateIndexQuery(Index index, ExprNodeDesc predicate, ParseContext pctx, HiveIndexQueryContext queryContext)
static String	getColumnNames(List<FieldSchema> fieldSchemas)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.hive.ql.index.HiveIndexHandler

analyzeIndexDefinition, generateIndexBuildTaskList, generateIndexQuery, usesIndexTable

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Constructor Detail

AbstractIndexHandler

public AbstractIndexHandler()

Method Detail

getColumnNames

public static String getColumnNames(List<FieldSchema> fieldSchemas)

generateIndexQuery

public void generateIndexQuery(Index index,
                               ExprNodeDesc predicate,
                               ParseContext pctx,
                               HiveIndexQueryContext queryContext)

checkQuerySize

public boolean checkQuerySize(long inputSize,
                              HiveConf conf)

Description copied from interface: HiveIndexHandler

Check the size of an input query to make sure it fits within the bounds

Specified by:

checkQuerySize in interface HiveIndexHandler

Parameters:

inputSize - size (in bytes) of the query in question

Returns:

true if query is within the bounds