Package org.apache.lucene.search
Class QueryUtils
- java.lang.Object
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- org.apache.lucene.search.QueryUtils
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public class QueryUtils extends Object
Utility class for sanity-checking queries.
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Constructor Summary
Constructors Constructor Description QueryUtils()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static void
check(Random random, org.apache.lucene.search.Query q1, org.apache.lucene.search.Searcher s)
Various query sanity checks on a searcher, some checks are only done for instanceof IndexSearcher.static void
check(Random random, org.apache.lucene.search.Query q1, org.apache.lucene.search.Searcher s, boolean wrap)
static void
check(org.apache.lucene.search.Query q)
Check the types of things query objects should be able to do.static void
checkEqual(org.apache.lucene.search.Query q1, org.apache.lucene.search.Query q2)
static void
checkExplanations(org.apache.lucene.search.Query q, org.apache.lucene.search.Searcher s)
deep check that explanations of a query 'score' correctlystatic void
checkHashEquals(org.apache.lucene.search.Query q)
check very basic hashCode and equalsstatic void
checkSkipTo(org.apache.lucene.search.Query q, org.apache.lucene.search.IndexSearcher s)
alternate scorer skipTo(),skipTo(),next(),next(),skipTo(),skipTo(), etc and ensure a hitcollector receives same docs and scoresstatic void
checkUnequal(org.apache.lucene.search.Query q1, org.apache.lucene.search.Query q2)
static org.apache.lucene.search.MultiSearcher
wrapSearcher(Random random, org.apache.lucene.search.Searcher s, int edge)
Given a Searcher, returns a new MultiSearcher wrapping the the original Searcher, as well as several "empty" IndexSearchers -- some of which will have deleted documents in them.static org.apache.lucene.search.IndexSearcher
wrapUnderlyingReader(Random random, org.apache.lucene.search.IndexSearcher s, int edge)
Given an IndexSearcher, returns a new IndexSearcher whose IndexReader is a MultiReader containing the Reader of the original IndexSearcher, as well as several "empty" IndexReaders -- some of which will have deleted documents in them.
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Method Detail
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check
public static void check(org.apache.lucene.search.Query q)
Check the types of things query objects should be able to do.
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checkHashEquals
public static void checkHashEquals(org.apache.lucene.search.Query q)
check very basic hashCode and equals
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checkEqual
public static void checkEqual(org.apache.lucene.search.Query q1, org.apache.lucene.search.Query q2)
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checkUnequal
public static void checkUnequal(org.apache.lucene.search.Query q1, org.apache.lucene.search.Query q2)
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checkExplanations
public static void checkExplanations(org.apache.lucene.search.Query q, org.apache.lucene.search.Searcher s) throws IOException
deep check that explanations of a query 'score' correctly- Throws:
IOException
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check
public static void check(Random random, org.apache.lucene.search.Query q1, org.apache.lucene.search.Searcher s)
Various query sanity checks on a searcher, some checks are only done for instanceof IndexSearcher.- See Also:
check(Query)
,checkFirstSkipTo(org.apache.lucene.search.Query, org.apache.lucene.search.IndexSearcher)
,checkSkipTo(org.apache.lucene.search.Query, org.apache.lucene.search.IndexSearcher)
,checkExplanations(org.apache.lucene.search.Query, org.apache.lucene.search.Searcher)
,checkSerialization(org.apache.lucene.search.Query, org.apache.lucene.search.Searcher)
,checkEqual(org.apache.lucene.search.Query, org.apache.lucene.search.Query)
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check
public static void check(Random random, org.apache.lucene.search.Query q1, org.apache.lucene.search.Searcher s, boolean wrap)
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wrapUnderlyingReader
public static org.apache.lucene.search.IndexSearcher wrapUnderlyingReader(Random random, org.apache.lucene.search.IndexSearcher s, int edge) throws IOException
Given an IndexSearcher, returns a new IndexSearcher whose IndexReader is a MultiReader containing the Reader of the original IndexSearcher, as well as several "empty" IndexReaders -- some of which will have deleted documents in them. This new IndexSearcher should behave exactly the same as the original IndexSearcher.- Parameters:
s
- the searcher to wrapedge
- if negative, s will be the first sub; if 0, s will be in the middle, if positive s will be the last sub- Throws:
IOException
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wrapSearcher
public static org.apache.lucene.search.MultiSearcher wrapSearcher(Random random, org.apache.lucene.search.Searcher s, int edge) throws IOException
Given a Searcher, returns a new MultiSearcher wrapping the the original Searcher, as well as several "empty" IndexSearchers -- some of which will have deleted documents in them. This new MultiSearcher should behave exactly the same as the original Searcher.- Parameters:
s
- the Searcher to wrapedge
- if negative, s will be the first sub; if 0, s will be in hte middle, if positive s will be the last sub- Throws:
IOException
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checkSkipTo
public static void checkSkipTo(org.apache.lucene.search.Query q, org.apache.lucene.search.IndexSearcher s) throws IOException
alternate scorer skipTo(),skipTo(),next(),next(),skipTo(),skipTo(), etc and ensure a hitcollector receives same docs and scores- Throws:
IOException
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