org.apache.hadoop.hive.ql.io.sarg

Class SearchArgumentImpl

java.lang.Object

org.apache.hadoop.hive.ql.io.sarg.SearchArgumentImpl

All Implemented Interfaces:

SearchArgument

public final class SearchArgumentImpl
extends Object
implements SearchArgument

The implementation of SearchArguments. Visible for testing only.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SearchArgumentImpl.PredicateLeafImpl

Nested classes/interfaces inherited from interface org.apache.hadoop.hive.ql.io.sarg.SearchArgument

SearchArgument.Builder, SearchArgument.TruthValue

Method Summary

Modifier and Type	Method and Description
SearchArgument.TruthValue	evaluate(SearchArgument.TruthValue[] leaves) Evaluate the entire predicate based on the values for the leaf predicates.
ExpressionTree	getExpression() Get the expression tree.
List<PredicateLeaf>	getLeaves() Get the leaf predicates that are required to evaluate the predicate.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

getLeaves

public List<PredicateLeaf> getLeaves()

Description copied from interface: SearchArgument

Get the leaf predicates that are required to evaluate the predicate. The list will have the duplicates removed.

Specified by:

getLeaves in interface SearchArgument

Returns:

the list of leaf predicates

evaluate

public SearchArgument.TruthValue evaluate(SearchArgument.TruthValue[] leaves)

Description copied from interface: SearchArgument

Evaluate the entire predicate based on the values for the leaf predicates.

Specified by:

evaluate in interface SearchArgument

Parameters:

leaves - the value of each leaf predicate

Returns:

the value of hte entire predicate

getExpression

public ExpressionTree getExpression()

Description copied from interface: SearchArgument

Get the expression tree. This should only needed for file formats that need to translate the expression to an internal form.

Specified by:

getExpression in interface SearchArgument

toString

public String toString()

Overrides:

toString in class Object