org.hibernate.criterion.MatchMode Maven / Gradle / Ivy
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//$Id: MatchMode.java 5685 2005-02-12 07:19:50Z steveebersole $
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);
}