Source Code Cross Referenced for JDBCInformixCreateCommand.java in  » EJB-Server-JBoss-4.2.1 » server » org » jboss » ejb » plugins » cmp » jdbc » keygen » 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.keygen 
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.keygen;
023:
024:        import java.sql.PreparedStatement;
025:        import java.sql.SQLException;
026:        import java.sql.Statement;
027:        import java.lang.reflect.Method;
028:        import java.lang.reflect.InvocationTargetException;
029:
030:        import javax.ejb.EJBException;
031:
032:        import org.jboss.ejb.plugins.cmp.jdbc.JDBCIdentityColumnCreateCommand;
033:        import org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager;
034:        import org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCEntityCommandMetaData;
035:        import org.jboss.ejb.EntityEnterpriseContext;
036:        import org.jboss.deployment.DeploymentException;
037:
038:        /**
039:         * Create command for Informix that uses the driver's getSerial method
040:         * to retrieve SERIAL values. Also supports SERIAL8 columns if method
041:         * attribute of entity-command is set to "getSerial8"
042:         *
043:         * @author <a href="mailto:jeremy@boynes.com">Jeremy Boynes</a>
044:         * @author Scott.Stark@jboss.org
045:         * @version $Revision: 57209 $
046:         */
047:        public class JDBCInformixCreateCommand extends
048:                JDBCIdentityColumnCreateCommand {
049:            private static final String NAME = "class-name";
050:            private static final String DEFAULT_CLASS = "com.informix.jdbc.IfxStatement";
051:            private static final String METHOD = "method";
052:            private static final String DEFAULT_METHOD = "getSerial";
053:
054:            private String className;
055:            private String methodName;
056:            private Method method;
057:            private Method getUnderlyingStatement;
058:
059:            public void init(JDBCStoreManager manager)
060:                    throws DeploymentException {
061:                super .init(manager);
062:                ClassLoader loader = GetTCLAction.getContextClassLoader();
063:                try {
064:                    Class psClass = loader.loadClass(className);
065:                    method = psClass.getMethod(methodName, null);
066:                } catch (ClassNotFoundException e) {
067:                    throw new DeploymentException(
068:                            "Could not load driver class: " + className, e);
069:                } catch (NoSuchMethodException e) {
070:                    throw new DeploymentException(
071:                            "Driver does not have method: " + methodName + "()");
072:                }
073:
074:                try {
075:                    Class wrapperClass = loader
076:                            .loadClass("org.jboss.resource.adapter.jdbc.StatementAccess");
077:                    getUnderlyingStatement = wrapperClass.getMethod(
078:                            "getUnderlyingStatement", null);
079:                } catch (ClassNotFoundException e) {
080:                    throw new DeploymentException(
081:                            "Could not load org.jboss.resource.adapter.jdbc.StatementAccess",
082:                            e);
083:                } catch (NoSuchMethodException e) {
084:                    throw new DeploymentException(
085:                            "StatementAccess.getUnderlyingStatement not found",
086:                            e);
087:                }
088:            }
089:
090:            protected void initEntityCommand(
091:                    JDBCEntityCommandMetaData entityCommand)
092:                    throws DeploymentException {
093:                super .initEntityCommand(entityCommand);
094:                className = entityCommand.getAttribute(NAME);
095:                if (className == null) {
096:                    className = DEFAULT_CLASS;
097:                }
098:                methodName = entityCommand.getAttribute(METHOD);
099:                if (methodName == null) {
100:                    methodName = DEFAULT_METHOD;
101:                }
102:            }
103:
104:            protected int executeInsert(int paramIndex, PreparedStatement ps,
105:                    EntityEnterpriseContext ctx) throws SQLException {
106:                int rows = ps.executeUpdate();
107:
108:                // remove any JCA wrappers
109:                Statement stmt = ps;
110:                do {
111:                    try {
112:                        Object[] args = {};
113:                        stmt = (Statement) getUnderlyingStatement.invoke(stmt,
114:                                args);
115:                    } catch (IllegalAccessException e) {
116:                        SQLException ex = new SQLException(
117:                                "Failed to invoke getUnderlyingStatement");
118:                        ex.initCause(e);
119:                        throw ex;
120:                    } catch (InvocationTargetException e) {
121:                        SQLException ex = new SQLException(
122:                                "Failed to invoke getUnderlyingStatement");
123:                        ex.initCause(e);
124:                        throw ex;
125:                    }
126:                } while (stmt != null
127:                        && method.getDeclaringClass().isInstance(stmt) == false);
128:
129:                try {
130:                    Number pk = (Number) method.invoke(stmt, null);
131:                    pkField.setInstanceValue(ctx, pk);
132:                    return rows;
133:                } catch (RuntimeException e) {
134:                    throw e;
135:                } catch (Exception e) {
136:                    // throw EJBException to force a rollback as the row has been inserted
137:                    throw new EJBException("Error extracting generated keys", e);
138:                }
139:            }
140:        }
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