/* * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package com.sun.rowset.providers;import com.sun.rowset.JdbcRowSetResourceBundle;import javax.sql.*;import java.io.*;import javax.sql.rowset.spi.*;import com.sun.rowset.internal.*;/** * The reference implementation of a JDBC Rowset synchronization provider * providing optimistic synchronization with a relational datastore * using any JDBC technology-enabled driver. * <p> * <h3>1.0 Backgroud</h3> * This synchronization provider is registered with the * <code>SyncFactory</code> by default as the * <code>com.sun.rowset.providers.RIOptimisticProvider</code>. * As an extension of the <code>SyncProvider</code> abstract * class, it provides the reader and writer classes required by disconnected * rowsets as <code>javax.sql.RowSetReader</code> and <code>javax.sql.RowSetWriter</code> * interface implementations. As a reference implementation, * <code>RIOptimisticProvider</code> provides a * fully functional implementation offering a medium grade classification of * syncrhonization, namely GRADE_CHECK_MODIFIED_AT_COMMIT. A * disconnected <code>RowSet</code> implementation using the * <code>RIOptimisticProvider</code> can expect the writer to * check only rows that have been modified in the <code>RowSet</code> against * the values in the data source. If there is a conflict, that is, if a value * in the data source has been changed by another party, the * <code>RIOptimisticProvider</code> will not write any of the changes to the data * source and will throw a <code>SyncProviderException</code> object. * * <h3>2.0 Usage</h3> * Standard disconnected <code>RowSet</code> implementations may opt to use this * <code>SyncProvider</code> implementation in one of two ways: * <OL> * <LI>By specifically calling the <code>setSyncProvider</code> method defined in the <code>CachedRowSet</code> interface * <pre> * CachedRowset crs = new FooCachedRowSetImpl(); * crs.setSyncProvider("com.sun.rowset.providers.RIOptimisticProvider"); * </pre> * <LI>By specifying it in the constructor of the <code>RowSet</code> * implementation * <pre> * CachedRowset crs = new FooCachedRowSetImpl( * "com.sun.rowset.providers.RIOptimisticProvider"); * </pre> * </OL> * Note that because the <code>RIOptimisticProvider</code> implementation is * the default provider, it will always be the provider when no provider ID is * specified to the constructor. * <P> * See the standard <code>RowSet</code> reference implementations in the * <code>com.sun.rowset</code> package for more details. * * @author Jonathan Bruce * @see javax.sql.rowset.spi.SyncProvider * @see javax.sql.rowset.spi.SyncProviderException * @see javax.sql.rowset.spi.SyncFactory * @see javax.sql.rowset.spi.SyncFactoryException * */public final class RIOptimisticProvider extends SyncProvider implements Serializable { private CachedRowSetReader reader; private CachedRowSetWriter writer; /** * The unique provider identifier. */ private String providerID = "com.sun.rowset.providers.RIOptimisticProvider"; /** * The vendor name of this SyncProvider implementation */ private String vendorName = "Oracle Corporation"; /** * The version number of this SyncProvider implementation */ private String versionNumber = "1.0"; /** * ResourceBundle */ private JdbcRowSetResourceBundle resBundle; /** * Creates an <code>RIOptimisticProvider</code> object initialized with the * fully qualified class name of this <code>SyncProvider</code> implementation * and a default reader and writer. * <P> * This provider is available to all disconnected <code>RowSet</code> implementations * as the default persistence provider. */ public RIOptimisticProvider() { providerID = this.getClass().getName(); reader = new CachedRowSetReader(); writer = new CachedRowSetWriter(); try { resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle(); } catch(IOException ioe) { throw new RuntimeException(ioe); } } /** * Returns the <code>'javax.sql.rowset.providers.RIOptimisticProvider'</code> * provider identification string. * * @return String Provider ID of this persistence provider */ public String getProviderID() { return providerID; } /** * Returns the <code>javax.sql.RowSetWriter</code> object for this * <code>RIOptimisticProvider</code> object. This is the writer that will * write changes made to the <code>Rowset</code> object back to the data source. * * @return the <code>javax.sql.RowSetWriter</code> object for this * <code>RIOptimisticProvider</code> object */ public RowSetWriter getRowSetWriter() { try { writer.setReader(reader); } catch (java.sql.SQLException e) {} return writer; } /** * Returns the <code>javax.sql.RowSetReader</code> object for this * <code>RIOptimisticProvider</code> object. This is the reader that will * populate a <code>RowSet</code> object using this <code>RIOptimisticProvider</code>. * * @return the <code>javax.sql.RowSetReader</code> object for this * <code>RIOptimisticProvider</code> object */ public RowSetReader getRowSetReader() { return reader; } /** * Returns the <code>SyncProvider</code> grade of synchronization that * <code>RowSet</code> objects can expect when using this * implementation. As an optimisic synchonization provider, the writer * will only check rows that have been modified in the <code>RowSet</code> * object. */ public int getProviderGrade() { return SyncProvider.GRADE_CHECK_MODIFIED_AT_COMMIT; } /** * Modifies the data source lock severity according to the standard * <code>SyncProvider</code> classifications. * * @param datasource_lock An <code>int</code> indicating the level of locking to be * set; must be one of the following constants: * <PRE> * SyncProvider.DATASOURCE_NO_LOCK, * SyncProvider.DATASOURCE_ROW_LOCK, * SyncProvider.DATASOURCE_TABLE_LOCK, * SyncProvider.DATASOURCE_DB_LOCk * </PRE> * @throws SyncProviderException if the parameter specified is not * <code>SyncProvider.DATASOURCE_NO_LOCK</code> */ public void setDataSourceLock(int datasource_lock) throws SyncProviderException { if(datasource_lock != SyncProvider.DATASOURCE_NO_LOCK ) { throw new SyncProviderException(resBundle.handleGetObject("riop.locking").toString()); } } /** * Returns the active data source lock severity in this * reference implementation of the <code>SyncProvider</code> * abstract class. * * @return <code>SyncProvider.DATASOURCE_NO_LOCK</code>. * The reference implementation does not support data source locks. */ public int getDataSourceLock() throws SyncProviderException { return SyncProvider.DATASOURCE_NO_LOCK; } /** * Returns the supported updatable view abilities of the * reference implementation of the <code>SyncProvider</code> * abstract class. * * @return <code>SyncProvider.NONUPDATABLE_VIEW_SYNC</code>. The * the reference implementation does not support updating tables * that are the source of a view. */ public int supportsUpdatableView() { return SyncProvider.NONUPDATABLE_VIEW_SYNC; } /** * Returns the release version ID of the Reference Implementation Optimistic * Synchronization Provider. * * @return the <code>String</code> detailing the version number of this SyncProvider */ public String getVersion() { return this.versionNumber; } /** * Returns the vendor name of the Reference Implementation Optimistic * Synchronization Provider * * @return the <code>String</code> detailing the vendor name of this * SyncProvider */ public String getVendor() { return this.vendorName; } private void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException { // Default state initialization happens here ois.defaultReadObject(); // Initialization of transient Res Bundle happens here . try { resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle(); } catch(IOException ioe) { throw new RuntimeException(ioe); } } static final long serialVersionUID =-3143367176751761936L;}
/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.rowset.providers;
import com.sun.rowset.JdbcRowSetResourceBundle;
import javax.sql.*;
import java.io.*;
import javax.sql.rowset.spi.*;
import com.sun.rowset.internal.*;
/**
* The reference implementation of a JDBC Rowset synchronization provider
* providing optimistic synchronization with a relational datastore
* using any JDBC technology-enabled driver.
* <p>
* <h3>1.0 Backgroud</h3>
* This synchronization provider is registered with the
* <code>SyncFactory</code> by default as the
* <code>com.sun.rowset.providers.RIOptimisticProvider</code>.
* As an extension of the <code>SyncProvider</code> abstract
* class, it provides the reader and writer classes required by disconnected
* rowsets as <code>javax.sql.RowSetReader</code> and <code>javax.sql.RowSetWriter</code>
* interface implementations. As a reference implementation,
* <code>RIOptimisticProvider</code> provides a
* fully functional implementation offering a medium grade classification of
* syncrhonization, namely GRADE_CHECK_MODIFIED_AT_COMMIT. A
* disconnected <code>RowSet</code> implementation using the
* <code>RIOptimisticProvider</code> can expect the writer to
* check only rows that have been modified in the <code>RowSet</code> against
* the values in the data source. If there is a conflict, that is, if a value
* in the data source has been changed by another party, the
* <code>RIOptimisticProvider</code> will not write any of the changes to the data
* source and will throw a <code>SyncProviderException</code> object.
*
* <h3>2.0 Usage</h3>
* Standard disconnected <code>RowSet</code> implementations may opt to use this
* <code>SyncProvider</code> implementation in one of two ways:
* <OL>
* <LI>By specifically calling the <code>setSyncProvider</code> method
defined in the <code>CachedRowSet</code> interface
* <pre>
* CachedRowset crs = new FooCachedRowSetImpl();
* crs.setSyncProvider("com.sun.rowset.providers.RIOptimisticProvider");
* </pre>
* <LI>By specifying it in the constructor of the <code>RowSet</code>
* implementation
* <pre>
* CachedRowset crs = new FooCachedRowSetImpl(
* "com.sun.rowset.providers.RIOptimisticProvider");
* </pre>
* </OL>
* Note that because the <code>RIOptimisticProvider</code> implementation is
* the default provider, it will always be the provider when no provider ID is
* specified to the constructor.
* <P>
* See the standard <code>RowSet</code> reference implementations in the
* <code>com.sun.rowset</code> package for more details.
*
* @author Jonathan Bruce
* @see javax.sql.rowset.spi.SyncProvider
* @see javax.sql.rowset.spi.SyncProviderException
* @see javax.sql.rowset.spi.SyncFactory
* @see javax.sql.rowset.spi.SyncFactoryException
*
*/
public final class RIOptimisticProvider extends SyncProvider implements Serializable {
private CachedRowSetReader reader;
private CachedRowSetWriter writer;
/**
* The unique provider identifier.
*/
private String providerID = "com.sun.rowset.providers.RIOptimisticProvider";
/**
* The vendor name of this SyncProvider implementation
*/
private String vendorName = "Oracle Corporation";
/**
* The version number of this SyncProvider implementation
*/
private String versionNumber = "1.0";
/**
* ResourceBundle
*/
private JdbcRowSetResourceBundle resBundle;
/**
* Creates an <code>RIOptimisticProvider</code> object initialized with the
* fully qualified class name of this <code>SyncProvider</code> implementation
* and a default reader and writer.
* <P>
* This provider is available to all disconnected <code>RowSet</code> implementations
* as the default persistence provider.
*/
public RIOptimisticProvider() {
providerID = this.getClass().getName();
reader = new CachedRowSetReader();
writer = new CachedRowSetWriter();
try {
resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle();
} catch(IOException ioe) {
throw new RuntimeException(ioe);
}
}
/**
* Returns the <code>'javax.sql.rowset.providers.RIOptimisticProvider'</code>
* provider identification string.
*
* @return String Provider ID of this persistence provider
*/
public String getProviderID() {
return providerID;
}
/**
* Returns the <code>javax.sql.RowSetWriter</code> object for this
* <code>RIOptimisticProvider</code> object. This is the writer that will
* write changes made to the <code>Rowset</code> object back to the data source.
*
* @return the <code>javax.sql.RowSetWriter</code> object for this
* <code>RIOptimisticProvider</code> object
*/
public RowSetWriter getRowSetWriter() {
try {
writer.setReader(reader);
} catch (java.sql.SQLException e) {}
return writer;
}
/**
* Returns the <code>javax.sql.RowSetReader</code> object for this
* <code>RIOptimisticProvider</code> object. This is the reader that will
* populate a <code>RowSet</code> object using this <code>RIOptimisticProvider</code>.
*
* @return the <code>javax.sql.RowSetReader</code> object for this
* <code>RIOptimisticProvider</code> object
*/
public RowSetReader getRowSetReader() {
return reader;
}
/**
* Returns the <code>SyncProvider</code> grade of synchronization that
* <code>RowSet</code> objects can expect when using this
* implementation. As an optimisic synchonization provider, the writer
* will only check rows that have been modified in the <code>RowSet</code>
* object.
*/
public int getProviderGrade() {
return SyncProvider.GRADE_CHECK_MODIFIED_AT_COMMIT;
}
/**
* Modifies the data source lock severity according to the standard
* <code>SyncProvider</code> classifications.
*
* @param datasource_lock An <code>int</code> indicating the level of locking to be
* set; must be one of the following constants:
* <PRE>
* SyncProvider.DATASOURCE_NO_LOCK,
* SyncProvider.DATASOURCE_ROW_LOCK,
* SyncProvider.DATASOURCE_TABLE_LOCK,
* SyncProvider.DATASOURCE_DB_LOCk
* </PRE>
* @throws SyncProviderException if the parameter specified is not
* <code>SyncProvider.DATASOURCE_NO_LOCK</code>
*/
public void setDataSourceLock(int datasource_lock) throws SyncProviderException {
if(datasource_lock != SyncProvider.DATASOURCE_NO_LOCK ) {
throw new SyncProviderException(resBundle.handleGetObject("riop.locking").toString());
}
}
/**
* Returns the active data source lock severity in this
* reference implementation of the <code>SyncProvider</code>
* abstract class.
*
* @return <code>SyncProvider.DATASOURCE_NO_LOCK</code>.
* The reference implementation does not support data source locks.
*/
public int getDataSourceLock() throws SyncProviderException {
return SyncProvider.DATASOURCE_NO_LOCK;
}
/**
* Returns the supported updatable view abilities of the
* reference implementation of the <code>SyncProvider</code>
* abstract class.
*
* @return <code>SyncProvider.NONUPDATABLE_VIEW_SYNC</code>. The
* the reference implementation does not support updating tables
* that are the source of a view.
*/
public int supportsUpdatableView() {
return SyncProvider.NONUPDATABLE_VIEW_SYNC;
}
/**
* Returns the release version ID of the Reference Implementation Optimistic
* Synchronization Provider.
*
* @return the <code>String</code> detailing the version number of this SyncProvider
*/
public String getVersion() {
return this.versionNumber;
}
/**
* Returns the vendor name of the Reference Implementation Optimistic
* Synchronization Provider
*
* @return the <code>String</code> detailing the vendor name of this
* SyncProvider
*/
public String getVendor() {
return this.vendorName;
}
private void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException {
// Default state initialization happens here
ois.defaultReadObject();
// Initialization of transient Res Bundle happens here .
try {
resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle();
} catch(IOException ioe) {
throw new RuntimeException(ioe);
}
}
static final long serialVersionUID =-3143367176751761936L;
}