xref: /trunk/main/odk/examples/DevelopersGuide/Database/Sales.java (revision 351838c4d8726bbb9f5f13e599b27a7f22b4a9bd)

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 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
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import java.io.*;

//  import com.sun.star.comp.helper.RegistryServiceFactory;
//  import com.sun.star.comp.servicemanager.ServiceManager;
//  import com.sun.star.lang.XMultiServiceFactory;
//  import com.sun.star.lang.XServiceInfo;
import com.sun.star.lang.XComponent;
//  import com.sun.star.bridge.XUnoUrlResolver;
import com.sun.star.uno.*;
import com.sun.star.util.Date;
import com.sun.star.beans.XPropertySet;
import com.sun.star.container.XNameAccess;
import com.sun.star.sdbc.*;

public class Sales
{
    private XConnection con;

    public Sales(XConnection connection )
    {
        con = connection;
    }
    // create the table sales.
    public void createSalesTable() throws com.sun.star.uno.Exception
    {
        String createTableSales = "CREATE TABLE SALES " +
                "(SALENR INTEGER NOT NULL, " +
                " COS_NR INTEGER, " +
                " SNR INTEGER, " +
                " NAME VARCHAR(50)," +
                " SALEDATE DATE," +
                " PRICE FLOAT(10), " +
                " PRIMARY KEY(SALENR)" +
                " )";
        XStatement stmt = con.createStatement();
        stmt.executeUpdate( createTableSales );
    }

    // drop the table sales.
    public void dropSalesTable() throws com.sun.star.uno.Exception
    {
        String createTableSalesman = "DROP TABLE SALES ";
        XStatement stmt = con.createStatement();
        stmt.executeUpdate( createTableSalesman );
    }

    // insert data into the table sales.
    public void insertDataIntoSales() throws com.sun.star.uno.Exception
    {
        XStatement stmt = con.createStatement();
        stmt.executeUpdate("INSERT INTO SALES " +
                "VALUES (1, '100', '1','Linux','2001-02-12',15)");
        stmt.executeUpdate("INSERT INTO SALES " +
                "VALUES (2, '101', '2','Beef','2001-10-18',15.78)");
        stmt.executeUpdate("INSERT INTO SALES " +
                "VALUES (3, '104', '4','orange juice','2001-08-09',1.5)");
    }

    // update the table sales with a prepared statement.
    public void updateSales() throws com.sun.star.uno.Exception
    {
        XStatement stmt = con.createStatement();
        String updateString =   "UPDATE SALES " +
                                "SET PRICE = 30 " +
                                "WHERE SALENR = 1";
        stmt.executeUpdate(updateString);
    }

    // retrieve the data of the table sales.
    public void retrieveSalesData() throws com.sun.star.uno.Exception
    {
        XStatement stmt = con.createStatement();
        String query =  "SELECT NAME, PRICE FROM SALES " +
                        "WHERE SALENR = 1";
        XResultSet rs = stmt.executeQuery(query);
        XRow      row = (XRow)UnoRuntime.queryInterface(XRow.class, rs);
        while (rs.next()) {
                String s = row.getString(1);
                float  n = row.getFloat(2);
                System.out.println("The current price for " + s + " is: $" + n + ".");
        }
    }

    // create a scrollable resultset.
    public void retrieveSalesData2() throws com.sun.star.uno.Exception
    {
        // example for a programmatic way to do updates. This doesn't work with adabas.
        XStatement stmt = con.createStatement();
        XPropertySet xProp = (XPropertySet)UnoRuntime.queryInterface(XPropertySet.class,stmt);

        xProp.setPropertyValue("ResultSetType", new java.lang.Integer(ResultSetType.SCROLL_INSENSITIVE));
        xProp.setPropertyValue("ResultSetConcurrency", new java.lang.Integer(ResultSetConcurrency.UPDATABLE));

        XResultSet srs = stmt.executeQuery("SELECT NAME, PRICE FROM SALES");
        XRow       row = (XRow)UnoRuntime.queryInterface(XRow.class,srs);

        srs.afterLast();
        while (srs.previous()) {
            String name = row.getString(1);
            float price = row.getFloat(2);
            System.out.println(name + "     " + price);
        }

        srs.last();
        XRowUpdate updateRow = (XRowUpdate)UnoRuntime.queryInterface(XRowUpdate.class,srs);
        updateRow.updateFloat(2, (float)0.69);

        XResultSetUpdate updateRs = ( XResultSetUpdate )UnoRuntime.queryInterface(
            XResultSetUpdate.class,srs);
        updateRs.updateRow(); // this call updates the data in DBMS

        srs.last();
        updateRow.updateFloat(2, (float)0.99);
        updateRs.cancelRowUpdates();
        updateRow.updateFloat(2, (float)0.79);
        updateRs.updateRow();
    }

    // inserts a row programmatically.
    public void insertRow() throws com.sun.star.uno.Exception
    {
        // example for a programmatic way to do updates. This doesn't work with adabas.
        XStatement stmt = con.createStatement();
//      stmt.executeUpdate("INSERT INTO SALES " +
//                   "VALUES (4, 102, 5, 'FTOP Darjeeling tea', '2002-01-02',150)");
//
//      stmt = con.createStatement();
        XPropertySet xProp = (XPropertySet)UnoRuntime.queryInterface(XPropertySet.class,stmt);
        xProp.setPropertyValue("ResultSetType", new java.lang.Integer(ResultSetType.SCROLL_INSENSITIVE));
        xProp.setPropertyValue("ResultSetConcurrency", new java.lang.Integer(ResultSetConcurrency.UPDATABLE));
        XResultSet rs = stmt.executeQuery("SELECT * FROM SALES");
        XRow       row = (XRow)UnoRuntime.queryInterface(XRow.class,rs);

        // insert a new row
        XRowUpdate updateRow = (XRowUpdate)UnoRuntime.queryInterface(XRowUpdate.class,rs);
        XResultSetUpdate updateRs = ( XResultSetUpdate )UnoRuntime. queryInterface(XResultSetUpdate.class,rs);
        updateRs.moveToInsertRow();
        updateRow.updateInt(1, 4);
        updateRow.updateInt(2, 102);
        updateRow.updateInt(3, 5);
        updateRow.updateString(4, "FTOP Darjeeling tea");
        updateRow.updateDate(5, new Date((short)1,(short)2,(short)2002));
        updateRow.updateFloat(6, 150);
        updateRs.insertRow();
    }

    // deletes a row programmatically.
    public void deleteRow() throws com.sun.star.uno.Exception
    {
        // example for a programmatic way to do updates. This doesn't work with adabas.
        XStatement stmt = con.createStatement();
        XPropertySet xProp = (XPropertySet)UnoRuntime.queryInterface(XPropertySet.class,stmt);
        xProp.setPropertyValue("ResultSetType", new java.lang.Integer(ResultSetType.SCROLL_INSENSITIVE));
        xProp.setPropertyValue("ResultSetConcurrency", new java.lang.Integer(ResultSetConcurrency.UPDATABLE));
        XResultSet rs = stmt.executeQuery("SELECT * FROM SALES");
        XRow       row = (XRow)UnoRuntime.queryInterface(XRow.class,rs);

        XResultSetUpdate updateRs = ( XResultSetUpdate )UnoRuntime. queryInterface(XResultSetUpdate.class,rs);
        // move to the inserted row
        rs.absolute(4);
        updateRs.deleteRow();
    }

    // refresh a row
    public void refreshRow() throws com.sun.star.uno.Exception
    {
        // example for a programmatic way to do updates. This doesn't work with adabas.
        // first we need the 4 row
        insertRow();

        XStatement stmt = con.createStatement();
        XPropertySet xProp = (XPropertySet)UnoRuntime.queryInterface(XPropertySet.class,stmt);
        xProp.setPropertyValue("ResultSetType", new java.lang.Integer(ResultSetType.SCROLL_INSENSITIVE));
        xProp.setPropertyValue("ResultSetConcurrency", new java.lang.Integer(ResultSetConcurrency.READ_ONLY));
        XResultSet rs = stmt.executeQuery("SELECT NAME, PRICE FROM SALES");
        XRow       row = (XRow)UnoRuntime.queryInterface(XRow.class, rs);
        rs.absolute(4);
        float price1 = row.getFloat(2);

        // modify the 4 row
        XRowUpdate updateRow = (XRowUpdate)UnoRuntime.queryInterface(XRowUpdate.class,rs);
        XResultSetUpdate updateRs = ( XResultSetUpdate )UnoRuntime. queryInterface(XResultSetUpdate.class,rs);
        updateRow.updateFloat(2, 150);
        updateRs.updateRow();
        // repositioning
        rs.absolute(4);
        rs.refreshRow();
        float price2 = row.getFloat(2);
        if (price2 != price1) {
            System.out.println("Prices are different.");
        }
        else
            System.out.println("Prices are equal.");
        deleteRow();
    }

    // displays the column names
    public void displayColumnNames() throws com.sun.star.uno.Exception
    {
        XStatement stmt = con.createStatement();
        XPropertySet xProp = (XPropertySet)UnoRuntime.queryInterface(XPropertySet.class,stmt);
        xProp.setPropertyValue("ResultSetType", new java.lang.Integer(ResultSetType.SCROLL_INSENSITIVE));
        xProp.setPropertyValue("ResultSetConcurrency", new java.lang.Integer(ResultSetConcurrency.READ_ONLY));
        XResultSet rs = stmt.executeQuery("SELECT NAME, PRICE FROM SALES");
        XResultSetMetaDataSupplier xRsMetaSup = (XResultSetMetaDataSupplier)
            UnoRuntime.queryInterface(XResultSetMetaDataSupplier.class,rs);
        XResultSetMetaData xRsMetaData =  xRsMetaSup.getMetaData();
        int nColumnCount =  xRsMetaData.getColumnCount();
        for(int i=1 ; i <= nColumnCount ; ++i)
        {
           System.out.println("Name: " + xRsMetaData.getColumnName(i) + " Type: " +
                              xRsMetaData.getColumnType(i));
        }
    }
}