net.sf.ehcache.search.expression
Class ILike

java.lang.Object
  net.sf.ehcache.search.expression.BaseCriteria
      net.sf.ehcache.search.expression.ILike

All Implemented Interfaces:

Criteria

public class ILike
extends BaseCriteria

A regular expression criteria that matches attribute string values. For non java.lang.String attributes, the toString() form is used in the comparison.

Expressions are always case insensitive

The following special characters are supported:

• '?' - match any one single character
• '*' - match any multiple character(s) (including zero)

The supported wildcard characters can be escaped with a backslash '\', and a literal backslash can be included with '\\'

WARN: Expressions starting with a leading wildcard character are potentially very expensive (ie. full scan) for indexed caches

Author:

teck

Constructor Summary

ILike(String attributeName, String regex)
Construct a "like" criteria for the given expression

Method Summary

boolean	execute(Element e, Map<String,AttributeExtractor> attributeExtractors) Test this criteria against a cache element
String	getAttributeName() Return attribute name.
Set<Attribute<?>>	getAttributes() Returns all search attributes referenced by this instance
String	getRegex() Return regex string.

Methods inherited from class net.sf.ehcache.search.expression.BaseCriteria

and, getExtractor, not, or

Methods inherited from class java.lang.Object

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

Constructor Detail

ILike

public ILike(String attributeName,
             String regex)

Construct a "like" criteria for the given expression

Parameters:

attributeName - attribute name

regex - expression

Method Detail

getAttributeName

public String getAttributeName()

Return attribute name.

Returns:

String attribute name

getRegex

public String getRegex()

Return regex string.

Returns:

String regex.

execute

public boolean execute(Element e,
                       Map<String,AttributeExtractor> attributeExtractors)

Test this criteria against a cache element

Parameters:

e - cache element

attributeExtractors - map of attribute extractors to attribute value names

Returns:

true if the criteria matches this element

getAttributes

public Set<Attribute<?>> getAttributes()

Description copied from class: BaseCriteria

Returns all search attributes referenced by this instance

Specified by:

getAttributes in class BaseCriteria