Source Code Cross Referenced for JDBCCMPFieldBridge.java in  » EJB-Server-JBoss-4.2.1 » server » org » jboss » ejb » plugins » cmp » jdbc » bridge » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » EJB Server JBoss 4.2.1 » server » org.jboss.ejb.plugins.cmp.jdbc.bridge 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * JBoss, Home of Professional Open Source.
003:         * Copyright 2006, Red Hat Middleware LLC, and individual contributors
004:         * as indicated by the @author tags. See the copyright.txt file in the
005:         * distribution for a full listing of individual contributors.
006:         *
007:         * This is free software; you can redistribute it and/or modify it
008:         * under the terms of the GNU Lesser General Public License as
009:         * published by the Free Software Foundation; either version 2.1 of
010:         * the License, or (at your option) any later version.
011:         *
012:         * This software is distributed in the hope that it will be useful,
013:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
015:         * Lesser General Public License for more details.
016:         *
017:         * You should have received a copy of the GNU Lesser General Public
018:         * License along with this software; if not, write to the Free
019:         * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020:         * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
021:         */
022:        package org.jboss.ejb.plugins.cmp.jdbc.bridge;
023:
024:        import java.lang.reflect.Field;
025:        import java.sql.PreparedStatement;
026:        import java.sql.ResultSet;
027:
028:        import org.jboss.ejb.plugins.cmp.bridge.CMPFieldBridge;
029:        import org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager;
030:        import org.jboss.ejb.plugins.cmp.jdbc.LockingStrategy;
031:        import org.jboss.ejb.EntityEnterpriseContext;
032:
033:        /**
034:         * JDBCCMPFieldBridge represents one CMP field. This implementations of 
035:         * this interface handles setting are responsible for setting statement
036:         * parameters and loading results for instance values and primary
037:         * keys.
038:         *
039:         * Life-cycle:
040:         *      Tied to the EntityBridge.
041:         *
042:         * Multiplicity:
043:         *      One for each entity bean cmp field.
044:         *
045:         * @author <a href="mailto:dain@daingroup.com">Dain Sundstrom</a>
046:         * @author <a href="mailto:loubyansky@hotmail.com">Alex Loubyansky</a>
047:         *
048:         * @version $Revision: 57209 $
049:         */
050:        public interface JDBCCMPFieldBridge extends JDBCFieldBridge,
051:                CMPFieldBridge {
052:            /**
053:             * The index of the field among the table fields.
054:             */
055:            int getTableIndex();
056:
057:            /**
058:             * Returns the default field flags.
059:             */
060:            byte getDefaultFlags();
061:
062:            /**
063:             * TODO: Get rid of it
064:             * @param flag
065:             */
066:            void addDefaultFlag(byte flag);
067:
068:            /**
069:             * @param ctx  instance's context
070:             * @return  field value that was locked.
071:             */
072:            Object getLockedValue(EntityEnterpriseContext ctx);
073:
074:            /**
075:             * Optimistically locks field value.
076:             */
077:            public void lockInstanceValue(EntityEnterpriseContext ctx);
078:
079:            /**
080:             * @param lockingStrategy locking strategy assigned to the field
081:             */
082:            void setLockingStrategy(LockingStrategy lockingStrategy);
083:
084:            /**
085:             * Gets the field of the primary key object in which the value of this 
086:             * field is stored.
087:             */
088:            public Field getPrimaryKeyField();
089:
090:            /**
091:             * Gets the value of this field in the specified primaryKey object.
092:             * @param primaryKey the primary key object from which this fields value 
093:             *    will be extracted
094:             * @return the value of this field in the primaryKey object
095:             */
096:            public Object getPrimaryKeyValue(Object primaryKey)
097:                    throws IllegalArgumentException;
098:
099:            /**
100:             * @return true if the field belongs to a relation table
101:             */
102:            boolean isRelationTableField();
103:
104:            /**
105:             * Sets the value of this field to the specified value in the 
106:             * specified primaryKey object.
107:             * @param primaryKey the primary key object which the value 
108:             *    will be inserted
109:             * @param value the value for field that will be set in the pk
110:             * @return the updated primary key object; the actual object may 
111:             *    change not just the value
112:             */
113:            public Object setPrimaryKeyValue(Object primaryKey, Object value)
114:                    throws IllegalArgumentException;
115:
116:            /**
117:             * Sets the prepared statement parameters with the data from the 
118:             * primary key.
119:             */
120:            public int setPrimaryKeyParameters(PreparedStatement ps,
121:                    int parameterIndex, Object primaryKey)
122:                    throws IllegalArgumentException;
123:
124:            /**
125:             * Sets the prepared statement parameters with the data from the 
126:             * object. The object must be the type of this field.
127:             */
128:            public int setArgumentParameters(PreparedStatement ps,
129:                    int parameterIndex, Object arg);
130:
131:            /**
132:             * Loads the data from result set into the primary key object.
133:             */
134:            public int loadPrimaryKeyResults(ResultSet rs, int parameterIndex,
135:                    Object[] pkRef) throws IllegalArgumentException;
136:        }
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