NewRegexpSearcher creates a searcher which will match documents that contain terms which match the pattern regexp.

NewRegexpStringSearcher is similar to NewRegexpSearcher, but additionally optimizes for index readers that handle regexp's.

DisjunctionHeapTakeover is a compile time setting that applications can adjust to control when the DisjunctionSearcher will switch from a simple slice implementation to a heap implementation.

DisjunctionMaxClauseCount is a compile time setting that applications can adjust to non-zero value to cause the DisjunctionSearcher to return an error instead of exeucting searches when the size exceeds this value.

DocIDSearcher returns documents matching a predefined set of identifiers.

FilteringSearcher wraps any other searcher, but checks any Next/Advance call against the supplied FilterFunc.

The Regexp interface defines the subset of the regexp.Regexp API methods that are used by bleve indexes, allowing callers to pass in alternate implementations.

FilterFunc defines a function which can filter documents returning true means keep the document returning false means do not keep the document.