/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ejb.plugins.cmp.jdbc;
import java.util.HashMap;
import javax.ejb.EJBException;
/**
* JDBCTypeComplex provides the mapping between a Java Bean (not an EJB)
* and a set of columns. This class has a flattened view of the Java Bean,
* which may contain other Java Beans. This class simply treats the bean
* as a set of properties, which may be in the a.b.c style. The details
* of how this mapping is performed can be found in JDBCTypeFactory.
*
* This class holds a description of the columns
* and the properties that map to the columns. Additionally, this class
* knows how to extract a column value from the Java Bean and how to set
* a column value info the Java Bean. See JDBCTypeComplexProperty for
* details on how this is done.
*
* @author <a href="mailto:dain@daingroup.com">Dain Sundstrom</a>
* @version $Revision: 81030 $
*/
public final class JDBCTypeComplex implements JDBCType {
private final JDBCTypeComplexProperty[] properties;
private final String[] columnNames;
private final Class[] javaTypes;
private final int[] jdbcTypes;
private final String[] sqlTypes;
private final boolean[] notNull;
private final JDBCResultSetReader[] resultSetReaders;
private final JDBCParameterSetter[] paramSetters;
private final Class fieldType;
private final HashMap propertiesByName = new HashMap();
public JDBCTypeComplex(
JDBCTypeComplexProperty[] properties,
Class fieldType) {
this.properties = properties;
this.fieldType = fieldType;
int propNum = properties.length;
columnNames = new String[propNum];
javaTypes = new Class[propNum];
jdbcTypes = new int[propNum];
sqlTypes = new String[propNum];
notNull = new boolean[propNum];
resultSetReaders = new JDBCResultSetReader[propNum];
paramSetters = new JDBCParameterSetter[propNum];
for(int i=0; i<properties.length; i++)
{
JDBCTypeComplexProperty property = properties[i];
columnNames[i] = property.getColumnName();
javaTypes[i] = property.getJavaType();
jdbcTypes[i] = property.getJDBCType();
sqlTypes[i] = property.getSQLType();
notNull[i] = property.isNotNull();
resultSetReaders[i] = property.getResulSetReader();
paramSetters[i] = property.getParameterSetter();
propertiesByName.put(property.getPropertyName(), property);
}
}
public String[] getColumnNames() {
return columnNames;
}
public Class[] getJavaTypes() {
return javaTypes;
}
public int[] getJDBCTypes() {
return jdbcTypes;
}
public String[] getSQLTypes() {
return sqlTypes;
}
public boolean[] getNotNull() {
return notNull;
}
public boolean[] getAutoIncrement() {
return new boolean[] {false};
}
public Object getColumnValue(int index, Object value) {
return getColumnValue(properties[index], value);
}
public Object setColumnValue(int index, Object value, Object columnValue) {
return setColumnValue(properties[index], value, columnValue);
}
public boolean hasMapper()
{
return false;
}
public boolean isSearchable()
{
return false;
}
public JDBCResultSetReader[] getResultSetReaders()
{
return resultSetReaders;
}
public JDBCParameterSetter[] getParameterSetter()
{
return paramSetters;
}
public JDBCTypeComplexProperty[] getProperties() {
return properties;
}
public JDBCTypeComplexProperty getProperty(String propertyName) {
JDBCTypeComplexProperty prop = (JDBCTypeComplexProperty)propertiesByName.get(propertyName);
if(prop == null) {
throw new EJBException(fieldType.getName() +
" does not have a property named " + propertyName);
}
return prop;
}
private static Object getColumnValue(JDBCTypeComplexProperty property, Object value) {
try {
return property.getColumnValue(value);
} catch(EJBException e) {
throw e;
} catch(Exception e) {
throw new EJBException("Error getting column value", e);
}
}
private Object setColumnValue(
JDBCTypeComplexProperty property,
Object value,
Object columnValue) {
if(value==null && columnValue==null) {
// nothing to do
return null;
}
try {
if(value == null) {
value = fieldType.newInstance();
}
return property.setColumnValue(value, columnValue);
} catch(Exception e) {
e.printStackTrace();
throw new EJBException("Error setting column value", e);
}
}
}