List of usage examples for javax.sql.rowset CachedRowSet acceptChanges
public void acceptChanges(Connection con) throws SyncProviderException;
CachedRowSet object using the specified Connection object to establish a connection to the data source. From source file:Main.java
public static void main(String[] args) throws Exception { Connection conn = getHSQLConnection(); System.out.println("Got Connection."); Statement st = conn.createStatement(); st.executeUpdate("create table survey (id int,name varchar);"); st.executeUpdate("create view surveyView as (select * from survey);"); st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')"); st.executeUpdate("insert into survey (id,name ) values (2,'anotherValue')"); CachedRowSet crs = null; RowSetMetaData rsMD = new RowSetMetaDataImpl(); rsMD.setColumnCount(2);//from ww w . ja v a 2 s.c om rsMD.setColumnName(1, "id"); rsMD.setColumnType(1, Types.VARCHAR); rsMD.setColumnName(2, "name"); rsMD.setColumnType(2, Types.VARCHAR); // sets the designated column's table name, if any, to the given String. rsMD.setTableName(1, "survey"); rsMD.setTableName(2, "survey"); // use a custom made RowSetMetaData object for CachedRowSet object crs = new CachedRowSetImpl(); crs.setMetaData(rsMD); crs.moveToInsertRow(); crs.updateString(1, "1111"); crs.updateString(2, "alex"); crs.insertRow(); crs.moveToInsertRow(); crs.updateString(1, "2222"); crs.updateString(2, "jane"); crs.insertRow(); crs.moveToCurrentRow(); crs.acceptChanges(conn); conn.close(); }
From source file:Main.java
public static void main(String[] args) throws Exception { Connection conn = getHSQLConnection(); System.out.println("Got Connection."); Statement st = conn.createStatement(); st.executeUpdate("create table survey (id int,name varchar);"); st.executeUpdate("create view surveyView as (select * from survey);"); st.executeUpdate("insert into survey (id,name ) values (1,'nameValue')"); st.executeUpdate("insert into survey (id,name ) values (2,'anotherValue')"); CachedRowSet crs = null; RowSetMetaData rsMD = new RowSetMetaDataImpl(); rsMD.setColumnCount(2);//from ww w . j a va 2 s .co m rsMD.setColumnName(1, "id"); rsMD.setColumnType(1, Types.VARCHAR); rsMD.setColumnName(2, "name"); rsMD.setColumnType(2, Types.VARCHAR); // sets the designated column's table name, if any, to the given String. rsMD.setTableName(1, "survey"); rsMD.setTableName(2, "survey"); // use a custom made RowSetMetaData object for CachedRowSet object crs = new CachedRowSetImpl(); crs.setMetaData(rsMD); crs.moveToInsertRow(); crs.updateString(1, "1111"); crs.updateString(2, "alex"); crs.insertRow(); crs.moveToInsertRow(); crs.updateString(1, "2222"); crs.updateString(2, "jane"); crs.insertRow(); // if you want to commit changes from a CachedRowSet // object to your desired datasource, then you must // create a Connection object. // //conn = getHSQLConnection(); // moves the cursor to the remembered cursor position, usually // the current row. This method has no effect if the cursor is // not on the insert row. crs.moveToCurrentRow(); // when the method acceptChanges() is executed, the CachedRowSet // object's writer, a RowSetWriterImpl object, is called behind the // scenes to write the changes made to the rowset to the underlying // data source. The writer is implemented to make a connection to // the data source and write updates to it. crs.acceptChanges(conn); conn.close(); }
From source file:com.oracle.tutorial.jdbc.CachedRowSetSample.java
public void testPaging() throws SQLException, MalformedURLException { CachedRowSet crs = null; this.con.setAutoCommit(false); try {//from w ww . j a va 2 s . co m crs = new CachedRowSetImpl(); crs.setUsername(settings.userName); crs.setPassword(settings.password); if (this.dbms.equals("mysql")) { crs.setUrl(settings.urlString + "?relaxAutoCommit=true"); } else { crs.setUrl(settings.urlString); } crs.setCommand("select * from MERCH_INVENTORY"); // Setting the page size to 4, such that we // get the data in chunks of 4 rows @ a time. crs.setPageSize(100); // Now get the first set of data crs.execute(); crs.addRowSetListener(new ExampleRowSetListener()); // Keep on getting data in chunks until done. int i = 1; do { System.out.println("Page number: " + i); while (crs.next()) { System.out.println("Found item " + crs.getInt("ITEM_ID") + ": " + crs.getString("ITEM_NAME")); if (crs.getInt("ITEM_ID") == 1235) { int currentQuantity = crs.getInt("QUAN") + 1; System.out.println("Updating quantity to " + currentQuantity); crs.updateInt("QUAN", currentQuantity + 1); crs.updateRow(); // Syncing the row back to the DB crs.acceptChanges(con); } } // End of inner while i++; } while (crs.nextPage()); // End of outer while // Inserting a new row // Doing a previous page to come back to the last page // as we ll be after the last page. int newItemId = 123456; if (this.doesItemIdExist(newItemId)) { System.out.println("Item ID " + newItemId + " already exists"); } else { crs.previousPage(); crs.moveToInsertRow(); crs.updateInt("ITEM_ID", newItemId); crs.updateString("ITEM_NAME", "TableCloth"); crs.updateInt("SUP_ID", 927); crs.updateInt("QUAN", 14); Calendar timeStamp; timeStamp = new GregorianCalendar(); timeStamp.set(2006, 4, 1); crs.updateTimestamp("DATE_VAL", new Timestamp(timeStamp.getTimeInMillis())); crs.insertRow(); crs.moveToCurrentRow(); // Syncing the new row back to the database. System.out.println("About to add a new row..."); crs.acceptChanges(con); System.out.println("Added a row..."); this.viewTable(con); } } catch (SyncProviderException spe) { SyncResolver resolver = spe.getSyncResolver(); Object crsValue; // value in the RowSet object Object resolverValue; // value in the SyncResolver object Object resolvedValue; // value to be persisted while (resolver.nextConflict()) { if (resolver.getStatus() == SyncResolver.INSERT_ROW_CONFLICT) { int row = resolver.getRow(); crs.absolute(row); int colCount = crs.getMetaData().getColumnCount(); for (int j = 1; j <= colCount; j++) { if (resolver.getConflictValue(j) != null) { crsValue = crs.getObject(j); resolverValue = resolver.getConflictValue(j); // Compare crsValue and resolverValue to determine // which should be the resolved value (the value to persist) // // This example choses the value in the RowSet object, // crsValue, to persist., resolvedValue = crsValue; resolver.setResolvedValue(j, resolvedValue); } } } } } catch (SQLException sqle) { JDBCTutorialUtilities.printSQLException(sqle); } finally { if (crs != null) crs.close(); this.con.setAutoCommit(true); } }