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Public Member Functions | Protected Attributes | Static Private Attributes | List of all members
com.cloudera.impala.common.ColumnAliasGenerator Class Reference
Inheritance diagram for com.cloudera.impala.common.ColumnAliasGenerator:
Collaboration diagram for com.cloudera.impala.common.ColumnAliasGenerator:

Public Member Functions

 ColumnAliasGenerator (List< String > existingLabels, String prefix)
 
String getNextAlias ()
 

Protected Attributes

String aliasPrefix_ = null
 
Set< String > usedAliases_ = Sets.newHashSet()
 

Static Private Attributes

static final String DEFAULT_COL_ALIAS_PREFIX = "$c$"
 

Detailed Description

Definition at line 21 of file ColumnAliasGenerator.java.

Constructor & Destructor Documentation

com.cloudera.impala.common.ColumnAliasGenerator.ColumnAliasGenerator ( List< String >  existingLabels,
String  prefix 
)
inline

Definition at line 24 of file ColumnAliasGenerator.java.

References com.cloudera.impala.common.AliasGenerator.aliasPrefix_, and com.cloudera.impala.common.ColumnAliasGenerator.DEFAULT_COL_ALIAS_PREFIX.

Member Function Documentation

String com.cloudera.impala.common.AliasGenerator.getNextAlias ( )
inlineinherited

Return the next available alias.

Definition at line 35 of file AliasGenerator.java.

References com.cloudera.impala.common.AliasGenerator.aliasPrefix_, com.cloudera.impala.common.AliasGenerator.numGeneratedAliases_, and com.cloudera.impala.common.AliasGenerator.usedAliases_.

Member Data Documentation

String com.cloudera.impala.common.AliasGenerator.aliasPrefix_ = null
protectedinherited

Definition at line 29 of file AliasGenerator.java.

Referenced by com.cloudera.impala.common.ColumnAliasGenerator.ColumnAliasGenerator(), com.cloudera.impala.common.AliasGenerator.getNextAlias(), and com.cloudera.impala.common.TableAliasGenerator.TableAliasGenerator().

final String com.cloudera.impala.common.ColumnAliasGenerator.DEFAULT_COL_ALIAS_PREFIX = "$c$"
staticprivate

Definition at line 22 of file ColumnAliasGenerator.java.

Referenced by com.cloudera.impala.common.ColumnAliasGenerator.ColumnAliasGenerator().

Set<String> com.cloudera.impala.common.AliasGenerator.usedAliases_ = Sets.newHashSet()
protectedinherited

Definition at line 30 of file AliasGenerator.java.

Referenced by com.cloudera.impala.common.AliasGenerator.getNextAlias().

The documentation for this class was generated from the following file: