org.apache.lens.driver.es.translator.impl

Class ESAggregateVisitor

java.lang.Object

org.apache.lens.driver.es.translator.ESVisitor

org.apache.lens.driver.es.translator.impl.ESAggregateVisitor

All Implemented Interfaces:

ASTVisitor

public class ESAggregateVisitor
extends ESVisitor

Visitor for traversing aggregate elastic search queries that involve group by or simple aggregations

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.lens.driver.es.translator.ASTVisitor

ASTVisitor.OrderBy

Constructor Summary

Constructors

Constructor and Description
ESAggregateVisitor(ESDriverConfig config)

Method Summary

Modifier and Type	Method and Description
void	completeVisit()
void	visitAggregation(String aggregationType, String columnName, String alias)
void	visitGroupBy(String groupBy)
void	visitOrderBy(String colName, ASTVisitor.OrderBy orderBy)
void	visitSimpleSelect(String columnName, String alias)

Methods inherited from class org.apache.lens.driver.es.translator.ESVisitor

getQuery, rewrite, rewrite, visitAllCols, visitCriteria, visitFrom, visitLimit

Methods inherited from class java.lang.Object

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

Constructor Detail

ESAggregateVisitor

public ESAggregateVisitor(ESDriverConfig config)

Method Detail

visitSimpleSelect

public void visitSimpleSelect(String columnName,
                              String alias)

visitAggregation

public void visitAggregation(String aggregationType,
                             String columnName,
                             String alias)
                      throws InvalidQueryException

Throws:

InvalidQueryException

visitGroupBy

public void visitGroupBy(String groupBy)

visitOrderBy

public void visitOrderBy(String colName,
                         ASTVisitor.OrderBy orderBy)

completeVisit

public void completeVisit()