+++ /dev/null
-<?xml version="1.0" encoding="UTF-8"?>
-<FilteredQuery>
- <Query>
- <BooleanQuery fieldName="contents">
- <Clause occurs="should">
- <TermQuery>merger</TermQuery>
- </Clause>
- <Clause occurs="mustnot">
- <TermQuery >sumitomo</TermQuery>
- </Clause>
- </BooleanQuery>
- </Query>
-
- <Filter>
- <!--
- CachedFilter elements can contain any Query or Filter.
- CachedFilters are cached in an LRU Cache keyed on the contained query/filter object.
- Using this will speed up overall performance for repeated uses of the same expensive
- query/filter. The sorts of queries likely to benefit from caching need not necessarily be
- complex - e.g. simple TermQuerys with a large DF (document frequency) can be expensive
- on large indexes. A good example of this might be a term query on a field with only 2 possible
- values - "true" or "false". In a large index, querying or filtering on this field requires
- reading millions of document ids from disk which can more usefully be cached as a
- QueryFilter bitset.
-
- For Queries/Filters to be cached and reused the object must implement hashcode and
- equals methods correctly so that duplicate queries/filters can be detected in the cache.
-
- The CoreParser.maxNumCachedFilters property can be used to control the size
- of the LRU Cache established during the construction of CoreParser instances.
- -->
- <CachedFilter>
- <!-- Example query to be cached for fast, repeated use -->
- <TermQuery fieldName="contents">bank</TermQuery>
- <!-- Alternatively, a filter object can be cached ....
- <RangeFilter fieldName="date" lowerTerm="19870409" upperTerm="19870412"/>
- -->
- </CachedFilter>
- </Filter>
-
-</FilteredQuery>