java.lang.Object
- org.apache.lucene.search.regex.JakartaRegexpCapabilities

All Implemented Interfaces:

RegexCapabilities
```
public class JakartaRegexpCapabilities
extends Object
implements RegexCapabilities
```
Implementation tying Jakarta Regexp to RegexQuery. Jakarta Regepx internally supports a prefix() implementation which can offer performance gains under certain circumstances. Yet, the implementation appears to be rather shaky as it doesn't always provide a prefix even if one would exist.

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`FLAG_MATCH_CASEINDEPENDENT`	Flag to specify that matching should be case-independent (folded)
`static int`	`FLAG_MATCH_NORMAL`	Flag to specify normal, case-sensitive matching behaviour.

Constructor Summary

Constructors
Constructor	Description
`JakartaRegexpCapabilities()`	Constructs a RegexCapabilities with the default MATCH_NORMAL match style.
`JakartaRegexpCapabilities(int flags)`	Constructs a RegexCapabilities with the provided match flags.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`compile(String pattern)`	Called by the constructor of `RegexTermEnum` allowing implementations to cache a compiled version of the regular expression pattern.
`boolean`	`equals(Object o)`
`int`	`hashCode()`
`boolean`	`match(String string)`
`String`	`prefix()`	A wise prefix implementation can reduce the term enumeration (and thus increase performance) of RegexQuery dramatically!

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - FLAG_MATCH_NORMAL
```
public static final int FLAG_MATCH_NORMAL
```
    Flag to specify normal, case-sensitive matching behaviour. This is the default.
    
    See Also:
    
    Constant Field Values
  - FLAG_MATCH_CASEINDEPENDENT
```
public static final int FLAG_MATCH_CASEINDEPENDENT
```
    Flag to specify that matching should be case-independent (folded)
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - JakartaRegexpCapabilities
```
public JakartaRegexpCapabilities()
```
    Constructs a RegexCapabilities with the default MATCH_NORMAL match style.
  - JakartaRegexpCapabilities
```
public JakartaRegexpCapabilities(int flags)
```
    Constructs a RegexCapabilities with the provided match flags. Multiple flags should be ORed together.
    
    Parameters:
    
    flags - The matching style
- Method Detail
  - compile
```
public void compile(String pattern)
```
    Description copied from interface: RegexCapabilities
    
    Called by the constructor of RegexTermEnum allowing implementations to cache a compiled version of the regular expression pattern.
    
    Specified by:
    
    compile in interface RegexCapabilities
    
    Parameters:
    
    pattern - regular expression pattern
  - match
```
public boolean match(String string)
```
    Specified by:
    
    match in interface RegexCapabilities
    
    Returns:
    
    true if string matches the pattern last passed to RegexCapabilities.compile(java.lang.String).
  - prefix
```
public String prefix()
```
    Description copied from interface: RegexCapabilities
    
    A wise prefix implementation can reduce the term enumeration (and thus increase performance) of RegexQuery dramatically!
    
    Specified by:
    
    prefix in interface RegexCapabilities
    
    Returns:
    
    static non-regex prefix of the pattern last passed to RegexCapabilities.compile(java.lang.String). May return null.
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object

Class JakartaRegexpCapabilities

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

FLAG_MATCH_NORMAL

FLAG_MATCH_CASEINDEPENDENT

Constructor Detail

JakartaRegexpCapabilities

JakartaRegexpCapabilities

Method Detail

compile

match

prefix

equals

hashCode