Class ScannerSearchAlgorithm

java.lang.Object

org.hsqldb.lib.ScannerSearchAlgorithm

public class ScannerSearchAlgorithm
extends Object

Provides a string search facility using a Scanner.

Since:

2.7.x

Author:

Campbell Burnet (campbell-burnet@users dot sourceforge.net)

Field Summary

Fields

Modifier and Type	Field	Description
static final int	SUGGESTED_MAX_LITERAL_SIZE	is 1024.

Method Summary

Modifier and Type	Method	Description
static long	search(Reader reader, char[] searchstr, boolean literal)	the given reader for the given searchstr.
static long	search(Reader reader, String searchstr, boolean literal)	the given reader for the given searchstr.
static long	search(Reader reader, Pattern pattern)	the given reader for the given pattern.

Methods inherited from class Object

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

Field Details

SUGGESTED_MAX_LITERAL_SIZE

public static final int SUGGESTED_MAX_LITERAL_SIZE

is 1024. This is the size above which it may be better to use KMPSearchAlgorithm.

See Also:

• Constant Field Values

Method Details

search

public static long search(Reader reader,
 char[] searchstr,
 boolean literal)

the given reader for the given searchstr.

Parameters:

reader - to search

searchstr - to find

literal - true to treat searchstr as a literal search term; false to treat searchstr as a regular expression.

Returns:

zero-based offset into stream at which searchstr is found; -1 if not found, reader is null, or searchstr is null; 0 if searchstr.length() == 0 && literal == true.

Throws:

IllegalStateException - if a Scanner illegal state occurs

IllegalArgumentException - if a Scanner illegal argument is encountered.

search

public static long search(Reader reader,
 String searchstr,
 boolean literal)
                   throws NullPointerException,
PatternSyntaxException,
IllegalStateException,
IllegalArgumentException

the given reader for the given searchstr.

Parameters:

reader - to search

searchstr - to find

literal - true to treat searchstr as a literal search term; false to treat searchstr as a regular expression.

Returns:

zero-based offset into stream at which searchstr is found; -1 if not found, reader is null, or searchstr is null; 0 if searchstr.length() == 0 && literal == true.

Throws:

PatternSyntaxException - if searchstr expression's syntax is invalid

IllegalStateException - if a Scanner illegal state occurs

IllegalArgumentException - if a Scanner illegal argument is encountered.

NullPointerException

search

public static long search(Reader reader,
 Pattern pattern)
                   throws IllegalStateException,
IllegalArgumentException

the given reader for the given pattern.

Parameters:

reader - to search

pattern - to find

Returns:

zero-based offset into stream at which searchstr is found; -1 if not found;

Throws:

NullPointerException - if reader is null or pattern is null.

IllegalStateException - if a Scanner illegal state occurs

IllegalArgumentException - if a Scanner illegal argument is encountered.