//$Id: ScrollMode.java 4369 2004-08-18 00:28:43Z oneovthafew $
package org.hibernate;
import java.io.Serializable;
import java.sql.ResultSet;
import java.util.HashMap;
import java.util.Map;
/**
* Specifies the type of JDBC scrollable result set to use
* underneath a <tt>ScrollableResults</tt>
*
* @see Query#scroll(ScrollMode)
* @see ScrollableResults
* @author Gavin King
*/
public final class ScrollMode implements Serializable {
private final int resultSetType;
private final String name;
private static final Map INSTANCES = new HashMap();
private ScrollMode(int level, String name) {
this.resultSetType=level;
this.name=name;
}
public String toString() {
return name;
}
/**
* @return the JDBC result set type code
*/
public int toResultSetType() {
return resultSetType;
}
/**
* @see java.sql.ResultSet.TYPE_FORWARD_ONLY
*/
public static final ScrollMode FORWARD_ONLY = new ScrollMode(ResultSet.TYPE_FORWARD_ONLY, "FORWARD_ONLY");
/**
* @see java.sql.ResultSet.TYPE_SCROLL_SENSITIVE
*/
public static final ScrollMode SCROLL_SENSITIVE = new ScrollMode(ResultSet.TYPE_SCROLL_SENSITIVE, "SCROLL_SENSITIVE");
/**
* Note that since the Hibernate session acts as a cache, you
* might need to expicitly evict objects, if you need to see
* changes made by other transactions.
* @see java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE
*/
public static final ScrollMode SCROLL_INSENSITIVE = new ScrollMode(ResultSet.TYPE_SCROLL_INSENSITIVE, "SCROLL_INSENSITIVE");
public boolean lessThan(ScrollMode other) {
return this.resultSetType<other.resultSetType;
}
static {
INSTANCES.put( FORWARD_ONLY.name, FORWARD_ONLY );
INSTANCES.put( SCROLL_INSENSITIVE.name, SCROLL_INSENSITIVE );
INSTANCES.put( SCROLL_SENSITIVE.name, SCROLL_SENSITIVE );
}
private Object readResolve() {
return INSTANCES.get(name);
}
}
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