org.hibernate.criterion.MatchMode Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Middleware LLC.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*
*/
package org.hibernate.criterion;
import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
/**
* Represents an strategy for matching strings using "like".
*
* @see Example#enableLike(MatchMode)
* @author Gavin King
*/
public abstract class MatchMode implements Serializable {
private final String name;
private static final Map INSTANCES = new HashMap();
protected MatchMode(String name) {
this.name=name;
}
public String toString() {
return name;
}
/**
* Match the entire string to the pattern
*/
public static final MatchMode EXACT = new MatchMode("EXACT") {
public String toMatchString(String pattern) {
return pattern;
}
};
/**
* Match the start of the string to the pattern
*/
public static final MatchMode START = new MatchMode("START") {
public String toMatchString(String pattern) {
return pattern + '%';
}
};
/**
* Match the end of the string to the pattern
*/
public static final MatchMode END = new MatchMode("END") {
public String toMatchString(String pattern) {
return '%' + pattern;
}
};
/**
* Match the pattern anywhere in the string
*/
public static final MatchMode ANYWHERE = new MatchMode("ANYWHERE") {
public String toMatchString(String pattern) {
return '%' + pattern + '%';
}
};
static {
INSTANCES.put( EXACT.name, EXACT );
INSTANCES.put( END.name, END );
INSTANCES.put( START.name, START );
INSTANCES.put( ANYWHERE.name, ANYWHERE );
}
private Object readResolve() {
return INSTANCES.get(name);
}
/**
* convert the pattern, by appending/prepending "%"
*/
public abstract String toMatchString(String pattern);
}