Source Code Cross Referenced for AmberConnection.java in  » EJB-Server-resin-3.1.5 » resin » com » caucho » amber » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » EJB Server resin 3.1.5 » resin » com.caucho.amber 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
003:         *
004:         * This file is part of Resin(R) Open Source
005:         *
006:         * Each copy or derived work must preserve the copyright notice and this
007:         * notice unmodified.
008:         *
009:         * Resin Open Source is free software; you can redistribute it and/or modify
010:         * it under the terms of the GNU General Public License as published by
011:         * the Free Software Foundation; either version 2 of the License, or
012:         * (at your option) any later version.
013:         *
014:         * Resin Open Source is distributed in the hope that it will be useful,
015:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
016:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
017:         * of NON-INFRINGEMENT.  See the GNU General Public License for more
018:         * details.
019:         *
020:         * You should have received a copy of the GNU General Public License
021:         * along with Resin Open Source; if not, write to the
022:         *   Free Software Foundation, Inc.
023:         *   59 Temple Place, Suite 330
024:         *   Boston, MA 02111-1307  USA
025:         *
026:         * @author Scott Ferguson
027:         */
028:
029:        package com.caucho.amber;
030:
031:        import java.sql.ResultSet;
032:        import java.sql.SQLException;
033:        import java.util.List;
034:
035:        /**
036:         * Main user interface to Amber.
037:         */
038:        public interface AmberConnection {
039:            /**
040:             * Loads the entity specified by its class and primary key.
041:             */
042:            public Object load(Class cl, Object key) throws AmberException;
043:
044:            /**
045:             * Loads the entity specified by its class and primary key.
046:             */
047:            public Object load(Class cl, long key) throws AmberException;
048:
049:            /**
050:             * Loads the entity, returning the active entity
051:             */
052:            public Object makePersistent(Object entity) throws SQLException;
053:
054:            /**
055:             * Creates a new entity given the values in the object.
056:             */
057:            public void create(Object obj) throws SQLException;
058:
059:            /**
060:             * Returns true if the entitiy is managed.
061:             */
062:            public boolean contains(Object entity);
063:
064:            /**
065:             * Deletes the specified entry.
066:             */
067:            public void delete(Object obj) throws SQLException;
068:
069:            /**
070:             * Queries the database, returning a result set
071:             *
072:             * @param query the query
073:             *
074:             * @return the query result set.
075:             */
076:            public ResultSet query(String query) throws SQLException;
077:
078:            /**
079:             * Queries the database, returning a result set
080:             *
081:             * @param query the query
082:             *
083:             * @return the query result set.
084:             */
085:            public int update(String query) throws SQLException;
086:
087:            /**
088:             * Creates a query object from a query string.
089:             *
090:             * The query will load the default group values for any selected
091:             * entitites.
092:             *
093:             * @param query a query
094:             */
095:            public AmberQuery prepareQuery(String queryString)
096:                    throws AmberException;
097:
098:            /**
099:             * Starts a transaction.
100:             */
101:            public void beginTransaction() throws SQLException;
102:
103:            /**
104:             * Commits a transaction.
105:             */
106:            public void commit() throws SQLException;
107:
108:            /**
109:             * Rolls a transaction back.
110:             */
111:            public void rollback() throws SQLException;
112:
113:            /**
114:             * Flushes data from the connection.
115:             */
116:            public void flush() throws SQLException;
117:
118:            /**
119:             * Closes the connection.  Unlike JDBC, this will never throw an
120:             * exception (although it may log a warning.)
121:             */
122:            public void close();
123:
124:            /**
125:             * Queries the database, returning a result set
126:             *
127:             * @param query the query
128:             *
129:             * @return the query result set.
130:             */
131:            public List find(String query) throws SQLException;
132:        }
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