org.apache.lens.driver.es

Class ASTTraverserForES

java.lang.Object

org.apache.lens.driver.es.ASTTraverserForES

public final class ASTTraverserForES
extends Object

This traverses ASTNode in inorder fashion. More visitors (translation/validation) can be added. Any SQL query can be converted to ASTNode and can be traversed using this traversal Currently this traversal is limited for elastic search. So naming it this way. Look at the constructor for usage.

Constructor Summary

Constructors

Constructor and Description
ASTTraverserForES(org.apache.hadoop.hive.ql.parse.ASTNode rootQueryNode, ASTVisitor visitor, CriteriaVisitorFactory criteriaVisitorFactory)

Method Summary

Methods

Modifier and Type	Method and Description
void	accept()
void	traverseSelects() Visit select expressions

Methods inherited from class java.lang.Object

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

Constructor Detail

ASTTraverserForES

@ConstructorProperties(value={"rootQueryNode","visitor","criteriaVisitorFactory"})
@Generated(value="lombok")
public ASTTraverserForES(@NonNull
                                                           org.apache.hadoop.hive.ql.parse.ASTNode rootQueryNode,
                                                           @NonNull
                                                           ASTVisitor visitor,
                                                           @NonNull
                                                           CriteriaVisitorFactory criteriaVisitorFactory)

Method Detail

accept

public void accept()
            throws InvalidQueryException

Throws:

InvalidQueryException

traverseSelects

public void traverseSelects()
                     throws InvalidQueryException

Visit select expressions

Throws:

InvalidQueryException