org.apache.ojb.broker.query
Class LikeCriteria

java.lang.Object
  org.apache.ojb.broker.query.SelectionCriteria
      org.apache.ojb.broker.query.ValueCriteria
          org.apache.ojb.broker.query.LikeCriteria

All Implemented Interfaces:

Serializable

public class LikeCriteria
extends ValueCriteria

Model a Like Criteria
Escape Processing by Paul R. Nase

The pattern string is a simple pattern string using % or * as a wildcard. So Ander* would match Anderson and Anderton. The _ or ? character is used to match a single occurence of a character. The '\' is used to escape the wildcard characters so that we can search for strings containing * and ?.

To change the escape character use setEscapeCharacter.

Version:

$Id: LikeCriteria.java,v 1.1 2007-08-24 22:17:36 ewestfal Exp $

Author:

Jakob Braeuchi , Paul Nase

See Also:

setEscapeCharacter(char), Serialized Form

Field Summary

static char

DEFAULT_ESCPAPE_CHARACTER The Dfault-Character used for Escaping Wildcards

Fields inherited from class org.apache.ojb.broker.query.SelectionCriteria

BETWEEN, EQUAL, GREATER, IN, IS_NULL, LESS, LIKE, NOT_BETWEEN, NOT_EQUAL, NOT_GREATER, NOT_IN, NOT_IS_NULL, NOT_LESS, NOT_LIKE

Constructor Summary

LikeCriteria(Object anAttribute, Object aValue, String aClause, String anAlias)

LikeCriteria(Object anAttribute, Object aValue, String aClause, UserAlias anAlias)

Method Summary

void	bind(Object newValue) sets the value of the criteria to newValue.
static char	getEscapeCharacter()
static void	setEscapeCharacter(char escChar) Global change of the escapeCharacter

Methods inherited from class org.apache.ojb.broker.query.ValueCriteria

getClause

Methods inherited from class org.apache.ojb.broker.query.SelectionCriteria

getAlias, getAttribute, getClassesForPath, getCriteria, getNumberOfExtentsToBind, getPathClasses, getQuery, getUserAlias, getValue, isBindable, isBound, isTranslateAttribute, setAlias, setAlias, setAlias, setBound, setNumberOfExtentsToBind, setValue, toString

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_ESCPAPE_CHARACTER

public static final char DEFAULT_ESCPAPE_CHARACTER

The Dfault-Character used for Escaping Wildcards

See Also:

Constant Field Values

Constructor Detail

LikeCriteria

public LikeCriteria(Object anAttribute,
                    Object aValue,
                    String aClause,
                    String anAlias)

Parameters:

anAttribute -

aValue -

aClause -

anAlias -

LikeCriteria

public LikeCriteria(Object anAttribute,
                    Object aValue,
                    String aClause,
                    UserAlias anAlias)

Parameters:

anAttribute -

aValue -

aClause -

anAlias -

Method Detail

bind

public void bind(Object newValue)

Description copied from class: SelectionCriteria

sets the value of the criteria to newValue. Used by the ODMG OQLQuery.bind() operation

Overrides:

bind in class SelectionCriteria

See Also:

SelectionCriteria.bind(java.lang.Object)

getEscapeCharacter

public static char getEscapeCharacter()

Returns:

Returns the escapeCharacter.

setEscapeCharacter

public static void setEscapeCharacter(char escChar)

Global change of the escapeCharacter

Parameters:

escChar - The escapeCharacter to set.