Module org.elasticsearch.server
Package org.elasticsearch.common.lucene.search

Class AutomatonQueries

java.lang.Object
org.elasticsearch.common.lucene.search.AutomatonQueries
public class AutomatonQueries extends Object
Helper functions for creating various forms of AutomatonQuery

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final char
    WILDCARD_CHAR
    Char equality with support for wildcards
    static final char
    WILDCARD_ESCAPE
    Escape character
    static final char
    WILDCARD_STRING
    String equality with support for wildcards

  • Constructor Summary

    Constructors
    Constructor
    Description
    AutomatonQueries()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static org.apache.lucene.util.automaton.Automaton
    caseInsensitivePrefix(String s)
    Build an automaton query accepting all terms with the specified prefix, ASCII case insensitive.
    static org.apache.lucene.search.AutomatonQuery
    caseInsensitivePrefixQuery(org.apache.lucene.index.Term prefix)
    Build an automaton query accepting all terms with the specified prefix, ASCII case insensitive.
    static org.apache.lucene.search.AutomatonQuery
    caseInsensitiveTermQuery(org.apache.lucene.index.Term term)
    Build an automaton accepting all terms ASCII case insensitive.
    static org.apache.lucene.search.AutomatonQuery
    caseInsensitiveWildcardQuery(org.apache.lucene.index.Term wildcardquery)
    Build an automaton matching a wildcard pattern, ASCII case insensitive.
    static org.apache.lucene.util.automaton.Automaton
    toCaseInsensitiveChar(int codepoint)
     
    static org.apache.lucene.util.automaton.Automaton
    toCaseInsensitiveString(String s)
     
    protected static org.apache.lucene.util.automaton.Automaton
    toCaseInsensitiveString(org.apache.lucene.util.BytesRef br)
     
    static org.apache.lucene.util.automaton.Automaton
    toCaseInsensitiveWildcardAutomaton(org.apache.lucene.index.Term wildcardquery)
    Convert Lucene wildcard syntax into an automaton.
    static org.apache.lucene.util.automaton.Automaton
    toCaseInsensitiveWildcardAutomaton(org.apache.lucene.index.Term wildcardquery, CircuitBreaker circuitBreaker)
    Convert Lucene wildcard syntax into an automaton, checking a circuit breaker during determinization to prevent OOM from huge automatons.
    static org.apache.lucene.util.automaton.Automaton
    toRegexpAutomaton(org.apache.lucene.index.Term term, int syntaxFlags, int matchFlags, int maxDeterminizedStates, CircuitBreaker circuitBreaker)
    Build a deterministic automaton from a regular expression, checking a circuit breaker during determinization to prevent OOM from huge automatons.
    static org.apache.lucene.util.automaton.Automaton
    toWildcardAutomaton(org.apache.lucene.index.Term wildcardquery, CircuitBreaker circuitBreaker)
    Convert Lucene wildcard syntax into a case-sensitive automaton, checking a circuit breaker during determinization to prevent OOM from huge automatons.
    static org.apache.lucene.util.automaton.Automaton
    toWildcardNFA(org.apache.lucene.index.Term wildcardquery)
    Build the NFA for a case-sensitive wildcard pattern without determinizing.

    Methods inherited from class java.lang.Object

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

  • Field Details

    • WILDCARD_STRING

      public static final char WILDCARD_STRING
      String equality with support for wildcards
      See Also:

    • WILDCARD_CHAR

      public static final char WILDCARD_CHAR
      Char equality with support for wildcards
      See Also:

    • WILDCARD_ESCAPE

      public static final char WILDCARD_ESCAPE
      Escape character
      See Also:

  • Constructor Details

    • AutomatonQueries

      public AutomatonQueries()

  • Method Details

    • caseInsensitivePrefix

      public static org.apache.lucene.util.automaton.Automaton caseInsensitivePrefix(String s)
      Build an automaton query accepting all terms with the specified prefix, ASCII case insensitive.

    • caseInsensitivePrefixQuery

      public static org.apache.lucene.search.AutomatonQuery caseInsensitivePrefixQuery(org.apache.lucene.index.Term prefix)
      Build an automaton query accepting all terms with the specified prefix, ASCII case insensitive.

    • caseInsensitiveTermQuery

      public static org.apache.lucene.search.AutomatonQuery caseInsensitiveTermQuery(org.apache.lucene.index.Term term)
      Build an automaton accepting all terms ASCII case insensitive.

    • caseInsensitiveWildcardQuery

      public static org.apache.lucene.search.AutomatonQuery caseInsensitiveWildcardQuery(org.apache.lucene.index.Term wildcardquery)
      Build an automaton matching a wildcard pattern, ASCII case insensitive.

    • toCaseInsensitiveWildcardAutomaton

      public static org.apache.lucene.util.automaton.Automaton toCaseInsensitiveWildcardAutomaton(org.apache.lucene.index.Term wildcardquery)
      Convert Lucene wildcard syntax into an automaton.

    • toCaseInsensitiveWildcardAutomaton

      public static org.apache.lucene.util.automaton.Automaton toCaseInsensitiveWildcardAutomaton(org.apache.lucene.index.Term wildcardquery, CircuitBreaker circuitBreaker)
      Convert Lucene wildcard syntax into an automaton, checking a circuit breaker during determinization to prevent OOM from huge automatons.

    • toWildcardAutomaton

      public static org.apache.lucene.util.automaton.Automaton toWildcardAutomaton(org.apache.lucene.index.Term wildcardquery, CircuitBreaker circuitBreaker)
      Convert Lucene wildcard syntax into a case-sensitive automaton, checking a circuit breaker during determinization to prevent OOM from huge automatons.

    • toRegexpAutomaton

      public static org.apache.lucene.util.automaton.Automaton toRegexpAutomaton(org.apache.lucene.index.Term term, int syntaxFlags, int matchFlags, int maxDeterminizedStates, CircuitBreaker circuitBreaker)
      Build a deterministic automaton from a regular expression, checking a circuit breaker during determinization to prevent OOM from huge automatons.

    • toWildcardNFA

      public static org.apache.lucene.util.automaton.Automaton toWildcardNFA(org.apache.lucene.index.Term wildcardquery)
      Build the NFA for a case-sensitive wildcard pattern without determinizing. This mirrors WildcardQuery.toAutomaton(Term, int) but stops before the determinize step.

    • toCaseInsensitiveString

      protected static org.apache.lucene.util.automaton.Automaton toCaseInsensitiveString(org.apache.lucene.util.BytesRef br)

    • toCaseInsensitiveString

      public static org.apache.lucene.util.automaton.Automaton toCaseInsensitiveString(String s)

    • toCaseInsensitiveChar

      public static org.apache.lucene.util.automaton.Automaton toCaseInsensitiveChar(int codepoint)