org.apache.lucene.sandbox.queries.regex
Class JavaUtilRegexCapabilities
java.lang.Object
org.apache.lucene.sandbox.queries.regex.JavaUtilRegexCapabilities
- All Implemented Interfaces:
- RegexCapabilities
public class JavaUtilRegexCapabilities
- extends Object
- implements RegexCapabilities
An implementation tying Java's built-in java.util.regex to RegexQuery.
Note that because this implementation currently only returns null from
RegexCapabilities.RegexMatcher.prefix()
that queries using this implementation
will enumerate and attempt to RegexCapabilities.RegexMatcher.match(BytesRef)
each
term for the specified field in the index.
Constructor Summary |
JavaUtilRegexCapabilities()
Default constructor that uses java.util.regex.Pattern
with its default flags. |
JavaUtilRegexCapabilities(int flags)
Constructor that allows for the modification of the flags that
the java.util.regex.Pattern will use to compile the regular expression. |
FLAG_CANON_EQ
public static final int FLAG_CANON_EQ
- See Also:
- Constant Field Values
FLAG_CASE_INSENSITIVE
public static final int FLAG_CASE_INSENSITIVE
- See Also:
- Constant Field Values
FLAG_COMMENTS
public static final int FLAG_COMMENTS
- See Also:
- Constant Field Values
FLAG_DOTALL
public static final int FLAG_DOTALL
- See Also:
- Constant Field Values
FLAG_LITERAL
public static final int FLAG_LITERAL
- See Also:
- Constant Field Values
FLAG_MULTILINE
public static final int FLAG_MULTILINE
- See Also:
- Constant Field Values
FLAG_UNICODE_CASE
public static final int FLAG_UNICODE_CASE
- See Also:
- Constant Field Values
FLAG_UNIX_LINES
public static final int FLAG_UNIX_LINES
- See Also:
- Constant Field Values
JavaUtilRegexCapabilities
public JavaUtilRegexCapabilities()
- Default constructor that uses java.util.regex.Pattern
with its default flags.
JavaUtilRegexCapabilities
public JavaUtilRegexCapabilities(int flags)
- Constructor that allows for the modification of the flags that
the java.util.regex.Pattern will use to compile the regular expression.
This gives the user the ability to fine-tune how the regular expression
to match the functionality that they need.
The
Pattern
class supports specifying
these fields via the regular expression text itself, but this gives the caller
another option to modify the behavior. Useful in cases where the regular expression text
cannot be modified, or if doing so is undesired.
- Parameters:
flags
- The flags that are ORed together.
compile
public RegexCapabilities.RegexMatcher compile(String regex)
- Description copied from interface:
RegexCapabilities
- Called by the constructor of
RegexTermsEnum
allowing
implementations to cache a compiled version of the regular
expression pattern.
- Specified by:
compile
in interface RegexCapabilities
- Parameters:
regex
- regular expression pattern
hashCode
public int hashCode()
- Overrides:
hashCode
in class Object
equals
public boolean equals(Object obj)
- Overrides:
equals
in class Object
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