//$Id: MetaType.java 7644 2005-07-25 06:53:09Z oneovthafew $
package org.hibernate.type;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.dom4j.Node;
import org.hibernate.EntityMode;
import org.hibernate.HibernateException;
import org.hibernate.MappingException;
import org.hibernate.engine.Mapping;
import org.hibernate.engine.SessionFactoryImplementor;
import org.hibernate.engine.SessionImplementor;
/**
* @author Gavin King
*/
public class MetaType extends AbstractType {
private final Map values;
private final Map keys;
private final Type baseType;
public MetaType(Map values, Type baseType) {
this.baseType = baseType;
this.values = values;
keys = new HashMap();
Iterator iter = values.entrySet().iterator();
while ( iter.hasNext() ) {
Map.Entry me = (Map.Entry) iter.next();
keys.put( me.getValue(), me.getKey() );
}
}
public int[] sqlTypes(Mapping mapping) throws MappingException {
return baseType.sqlTypes(mapping);
}
public int getColumnSpan(Mapping mapping) throws MappingException {
return baseType.getColumnSpan(mapping);
}
public Class getReturnedClass() {
return String.class;
}
public Object nullSafeGet(
ResultSet rs,
String[] names,
SessionImplementor session,
Object owner)
throws HibernateException, SQLException {
Object key = baseType.nullSafeGet(rs, names, session, owner);
return key==null ? null : values.get(key);
}
public Object nullSafeGet(
ResultSet rs,
String name,
SessionImplementor session,
Object owner)
throws HibernateException, SQLException {
Object key = baseType.nullSafeGet(rs, name, session, owner);
return key==null ? null : values.get(key);
}
public void nullSafeSet(PreparedStatement st, Object value, int index, SessionImplementor session)
throws HibernateException, SQLException {
baseType.nullSafeSet(st, value==null ? null : keys.get(value), index, session);
}
public void nullSafeSet(
PreparedStatement st,
Object value,
int index,
boolean[] settable,
SessionImplementor session)
throws HibernateException, SQLException {
if ( settable[0] ) nullSafeSet(st, value, index, session);
}
public String toLoggableString(Object value, SessionFactoryImplementor factory) throws HibernateException {
return toXMLString(value, factory);
}
public String toXMLString(Object value, SessionFactoryImplementor factory)
throws HibernateException {
return (String) value; //value is the entity name
}
public Object fromXMLString(String xml, Mapping factory)
throws HibernateException {
return xml; //xml is the entity name
}
public String getName() {
return baseType.getName(); //TODO!
}
public Object deepCopy(Object value, EntityMode entityMode, SessionFactoryImplementor factory)
throws HibernateException {
return value;
}
public Object replace(
Object original,
Object target,
SessionImplementor session,
Object owner,
Map copyCache
) {
return original;
}
public boolean isMutable() {
return false;
}
public Object fromXMLNode(Node xml, Mapping factory) throws HibernateException {
return fromXMLString( xml.getText(), factory );
}
public void setToXMLNode(Node node, Object value, SessionFactoryImplementor factory) throws HibernateException {
node.setText( toXMLString(value, factory) );
}
public boolean[] toColumnNullness(Object value, Mapping mapping) {
throw new UnsupportedOperationException();
}
public boolean isDirty(Object old, Object current, boolean[] checkable, SessionImplementor session) throws HibernateException {
return checkable[0] && isDirty(old, current, session);
}
}
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