| /* Copyright 2004-2005 the original author or authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.codehaus.groovy.grails.orm.hibernate.metaclass; |
| |
| import groovy.lang.MissingMethodException; |
| |
| import java.sql.SQLException; |
| import java.util.Map; |
| import java.util.regex.Pattern; |
| |
| import org.hibernate.Criteria; |
| import org.hibernate.HibernateException; |
| import org.hibernate.Session; |
| import org.hibernate.SessionFactory; |
| import org.hibernate.criterion.Expression; |
| import org.springframework.orm.hibernate3.HibernateCallback; |
| |
| /** |
| * The "findWhere" persistent static method. This method takes a map with the |
| * keys being the property names and the values being the values of those properties |
| * and locates an instance that matches the criteria. |
| * |
| * eg. Account.findWhere( [ "holder":"Joe Bloggs", branch:"London" ] ); |
| * |
| * @author Graeme Rocher |
| * |
| */ |
| public class FindWherePersistentMethod extends AbstractStaticPersistentMethod { |
| |
| |
| private static final String METHOD_PATTERN = "^findWhere$"; |
| |
| public FindWherePersistentMethod(SessionFactory sessionFactory, ClassLoader classLoader) { |
| super(sessionFactory, classLoader, Pattern.compile(METHOD_PATTERN)); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.codehaus.groovy.grails.orm.hibernate.metaclass.AbstractStaticPersistentMethod#doInvokeInternal(java.lang.Class, java.lang.String, java.lang.Object[]) |
| */ |
| protected Object doInvokeInternal(final Class clazz, String methodName, |
| Object[] arguments) { |
| |
| // if no arguments passed throw exception |
| if(arguments.length == 0) |
| throw new MissingMethodException(METHOD_PATTERN, clazz,arguments); |
| // if its not a map throw exception |
| Object arg = arguments[0]; |
| if(!(arg instanceof Map)) |
| throw new MissingMethodException(METHOD_PATTERN, clazz,arguments); |
| |
| final Map queryMap = (Map)arg; |
| |
| // TODO: We may want to validate the query map to make sure each named property |
| // is a valid property of the GrailsDomainClass thus hiding the Hibernate |
| // exception that will be thrown if it is not |
| |
| return super.getHibernateTemplate().executeFind( new HibernateCallback() { |
| |
| public Object doInHibernate(Session session) throws HibernateException, SQLException { |
| |
| Criteria crit = session.createCriteria(clazz); |
| |
| return crit |
| .add( Expression.allEq( queryMap ) ) |
| .list(); |
| |
| } |
| |
| }); |
| |
| } |
| |
| } |