org.apache.hadoop.hive.conf

Class VariableSubstitution

java.lang.Object

org.apache.hadoop.hive.conf.SystemVariables

org.apache.hadoop.hive.conf.VariableSubstitution

public class VariableSubstitution
extends SystemVariables

Field Summary

Fields inherited from class org.apache.hadoop.hive.conf.SystemVariables

ENV_PREFIX, HIVECONF_PREFIX, HIVEVAR_PREFIX, METACONF_PREFIX, SET_COLUMN_NAME, SYSTEM_PREFIX, varPat

Constructor Summary

Constructors

Constructor and Description
VariableSubstitution(HiveVariableSource hiveVariableSource)

Method Summary

Modifier and Type	Method and Description
protected String	getSubstitute(org.apache.hadoop.conf.Configuration conf, String var) The super method will handle with the case of substitutions for system variables, hive conf variables and env variables.
String	substitute(HiveConf conf, String expr)

Methods inherited from class org.apache.hadoop.hive.conf.SystemVariables

containsVar, substitute

Methods inherited from class java.lang.Object

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

Constructor Detail

VariableSubstitution

public VariableSubstitution(HiveVariableSource hiveVariableSource)

Method Detail

getSubstitute

protected String getSubstitute(org.apache.hadoop.conf.Configuration conf,
                               String var)

The super method will handle with the case of substitutions for system variables, hive conf variables and env variables. In this method, it will retrieve the hive variables using hiveVariableSource.

Overrides:

getSubstitute in class SystemVariables

Parameters:

conf -

var -

Returns:

substitute

public String substitute(HiveConf conf,
                         String expr)