org.apache.drill.test

Class QueryBuilder.PlanMatcher

java.lang.Object

org.apache.drill.test.QueryBuilder.PlanMatcher

Enclosing class:

QueryBuilder

public static class QueryBuilder.PlanMatcher
extends Object

Collects expected and non-expected query patterns. Upon match() method call, matches given patterns to the query plan.

Constructor Summary

Constructors

Constructor and Description
PlanMatcher(String plan)

Method Summary

Modifier and Type	Method and Description
QueryBuilder.PlanMatcher	exclude(String... patterns)
QueryBuilder.PlanMatcher	include(String... patterns)
void	match() Checks if stored patterns (string parts) are included or excluded in the given plan.

Methods inherited from class java.lang.Object

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

Constructor Detail

PlanMatcher

public PlanMatcher(String plan)

Method Detail

include

public QueryBuilder.PlanMatcher include(String... patterns)

exclude

public QueryBuilder.PlanMatcher exclude(String... patterns)

match

public void match()

Checks if stored patterns (string parts) are included or excluded in the given plan.

Example:
For the plan:

 00-00    Screen
 00-01      Project(cnt=[$0])
 00-02        DirectScan(groupscan=[selectionRoot = classpath:/tpch/nation.parquet,
 numFiles = 1, usedMetadataSummaryFile = false, DynamicPojoRecordReader{records = [[25]]}])
 

• To check that number of files are 1 and DynamicPojoRecordReader is used: planMatcher.include("numFiles = 1", "DynamicPojoRecordReader")
• To check that metadata summary file was not used: planMatcher.exclude("usedMetadataSummaryFile = true")

Calling planMatcher.match() method would check that given patterns are present or absent in the given plan. Method execution will fail with AssertionError only if expected pattern was not matched or unexpected pattern was matched.