com.facebook.buck.query

Class CachingQueryEvaluator<ENV_NODE_TYPE>

java.lang.Object

com.facebook.buck.query.CachingQueryEvaluator<ENV_NODE_TYPE>

All Implemented Interfaces:

QueryEvaluator<ENV_NODE_TYPE>

public class CachingQueryEvaluator<ENV_NODE_TYPE>
extends Object
implements QueryEvaluator<ENV_NODE_TYPE>

Constructor Summary

Constructors

Constructor and Description
CachingQueryEvaluator()

Method Summary

Modifier and Type	Method and Description
<OUTPUT_TYPE extends QueryTarget> Set<OUTPUT_TYPE>	eval(QueryExpression<ENV_NODE_TYPE> exp, QueryEnvironment<ENV_NODE_TYPE> env) Evaluates the result of a query expression in the given environment.
boolean	isPresent(QueryExpression<?> exp)

Methods inherited from class java.lang.Object

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

Constructor Detail

CachingQueryEvaluator

public CachingQueryEvaluator()

Method Detail

eval

public <OUTPUT_TYPE extends QueryTarget> Set<OUTPUT_TYPE> eval(QueryExpression<ENV_NODE_TYPE> exp,
                                                               QueryEnvironment<ENV_NODE_TYPE> env)
                                                        throws QueryException

Description copied from interface: QueryEvaluator

Evaluates the result of a query expression in the given environment.

Specified by:

eval in interface QueryEvaluator<ENV_NODE_TYPE>

Parameters:

exp - the query expression to be evaluated.

env - the environment used for evaluation of the given query.

Returns:

the evaluated target set.

Throws:

QueryException - if evaluation fails.

isPresent

public boolean isPresent(QueryExpression<?> exp)