Java 中文官方教程 2022 版（三十六）

CREATE TYPE PLANE_POINT
AS (X FLOAT, Y FLOAT) NOT FINAL

CREATE TYPE MONEY
AS NUMERIC(10,2) FINAL

ResultSet rs = stmt.executeQuery(
    "SELECT SCORES FROM STUDENTS " +
    "WHERE ID = 002238");
rs.next();
Array scores = rs.getArray("SCORES");

Clob notes = rs.getClob("NOTES");
PreparedStatement pstmt =
    con.prepareStatement(
        "UPDATE MARKETS SET COMMENTS = ? " +
        "WHERE SALES < 1000000");
pstmt.setClob(1, notes);
pstmt.executeUpdate();

  public void addRowToCoffeeDescriptions(String coffeeName,
                                         String fileName) throws SQLException {
    String sql = "INSERT INTO COFFEE_DESCRIPTIONS VALUES(?,?)";
    Clob myClob = this.con.createClob();
    try (PreparedStatement pstmt = this.con.prepareStatement(sql);
      Writer clobWriter = myClob.setCharacterStream(1);){
      String str = this.readFile(fileName, clobWriter);
      System.out.println("Wrote the following: " + clobWriter.toString());
      if (this.settings.dbms.equals("mysql")) {
        System.out.println("MySQL, setting String in Clob object with setString method");
        myClob.setString(1, str);
      }
      System.out.println("Length of Clob: " + myClob.length());
      pstmt.setString(1, coffeeName);
      pstmt.setClob(2, myClob);
      pstmt.executeUpdate();
    } catch (SQLException sqlex) {
      JDBCTutorialUtilities.printSQLException(sqlex);
    } catch (Exception ex) {
      System.out.println("Unexpected exception: " + ex.toString());
    }
  }

Clob myClob = this.con.createClob();

Writer clobWriter = myClob.setCharacterStream(1);

  private String readFile(String fileName, Writer writerArg) throws IOException {
    try (BufferedReader br = new BufferedReader(new FileReader(fileName))) {
      String nextLine = "";
      StringBuffer sb = new StringBuffer();
      while ((nextLine = br.readLine()) != null) {
        System.out.println("Writing: " + nextLine);
        writerArg.write(nextLine);
        sb.append(nextLine);
      }
      // Convert the content into to a string
      String clobData = sb.toString();
	  // Return the data.
      return clobData;
	}
  }

    String sql = "INSERT INTO COFFEE_DESCRIPTIONS VALUES(?,?)";
    Clob myClob = this.con.createClob();
    try (PreparedStatement pstmt = this.con.prepareStatement(sql);
      // ...
      ) {
      // ...
      pstmt.setString(1, coffeeName);
      pstmt.setClob(2, myClob);
      pstmt.executeUpdate();
      // ...

  public String retrieveExcerpt(String coffeeName,
                                int numChar) throws SQLException {

    String description = null;
    Clob myClob = null;
    String sql = "select COF_DESC from COFFEE_DESCRIPTIONS where COF_NAME = ?";

    try (PreparedStatement pstmt = this.con.prepareStatement(sql)) {
      pstmt.setString(1, coffeeName);
      ResultSet rs = pstmt.executeQuery();
      if (rs.next()) {
        myClob = rs.getClob(1);
        System.out.println("Length of retrieved Clob: " + myClob.length());
      }
      description = myClob.getSubString(1, numChar);
    } catch (SQLException sqlex) {
      JDBCTutorialUtilities.printSQLException(sqlex);
    } catch (Exception ex) {
      System.out.println("Unexpected exception: " + ex.toString());
    }
    return description;
  }

myClob = rs.getClob(1);

description = myClob.getSubString(1, numChar);

Clob aClob = con.createClob();
int numWritten = aClob.setString(1, val);
aClob.free();

Connection con = DriverManager.getConnection(url, props);
SQLXML xmlVal = con.createSQLXML();
xmlVal.setString(val);

SQLXML xmlVar = rs.getSQLXML(1);

SQLXML xmlVal= rs.getSQLXML(1);
String val = xmlVal.getString();

SQLXML sqlxml = rs.getSQLXML(column);
InputStream binaryStream = sqlxml.getBinaryStream();
DocumentBuilder parser = 
    DocumentBuilderFactory.newInstance().newDocumentBuilder();
Document result = parser.parse(binaryStream);

SQLXML xmlVal= rs.getSQLXML(1);
SAXSource saxSource = sqlxml.getSource(SAXSource.class);
XMLReader xmlReader = saxSource.getXMLReader();
xmlReader.setContentHandler(myHandler);
xmlReader.parse(saxSource.getInputSource());

PreparedStatement pstmt = conn.prepareStatement("INSERT INTO bio " +
                              "(xmlData, authId) VALUES (?, ?)");
pstmt.setSQLXML(1, authorData);
pstmt.setInt(2, authorId);

SQLXML sqlxml = con.createSQLXML();
SAXResult saxResult = sqlxml.setResult(SAXResult.class);
ContentHandler contentHandler = saxResult.getXMLReader().getContentHandler();
contentHandler.startDocument();

// set the XML elements and
// attributes into the result
contentHandler.endDocument();

SQLXML sqlxml = con.createSQLXML();
Writer out= sqlxml.setCharacterStream();
BufferedReader in = new BufferedReader(new FileReader("xml/foo.xml"));
String line = null;
while((line = in.readLine() != null) {
    out.write(line);
}

SQLXML xmlVar = con.createSQLXML();
xmlVar.setString(val);
xmlVar.free();

create table RSS_FEEDS
    (RSS_NAME varchar(32) NOT NULL,
    RSS_FEED_XML longtext NOT NULL,
    PRIMARY KEY (RSS_NAME));

Node titleElement =
    (Node)xPath.evaluate("/rss/channel/title[1]",
        doc, XPathConstants.NODE);

// For databases that support the SQLXML
// data type, this creates a
// SQLXML object from
// org.w3c.dom.Document.

System.out.println("Adding XML file " + fileName);
String insertRowQuery =
    "insert into RSS_FEEDS " +
    "(RSS_NAME, RSS_FEED_XML) values " +
    "(?, ?)";
insertRow = con.prepareStatement(insertRowQuery);
insertRow.setString(1, titleString);

System.out.println("Creating SQLXML object with MySQL");
rssData = con.createSQLXML();
System.out.println("Creating DOMResult object");
DOMResult dom = (DOMResult)rssData.setResult(DOMResult.class);
dom.setNode(doc);

insertRow.setSQLXML(2, rssData);
System.out.println("Running executeUpdate()");
insertRow.executeUpdate();

create table RSS_FEEDS
    (RSS_NAME varchar(32) NOT NULL,
    RSS_FEED_XML xml NOT NULL,
    PRIMARY KEY (RSS_NAME));

String insertRowQuery =
    "insert into RSS_FEEDS " +
    "(RSS_NAME, RSS_FEED_XML) values " +
    "(?, xmlparse(document cast " +
    "(? as clob) preserve whitespace))";

String query =
    "select RSS_NAME, " +
    "xmlserialize " +
    "(RSS_FEED_XML as clob) " +
    "from RSS_FEEDS";

create table REGIONS
    (REGION_NAME varchar(32) NOT NULL,
    ZIPS varchar32 ARRAY[10] NOT NULL,
    PRIMARY KEY (REGION_NAME));

insert into REGIONS values(
    'Northwest',
    '{"93101", "97201", "99210"}');
insert into REGIONS values(
    'Southwest',
    '{"94105", "90049", "92027"}');

Connection con = DriverManager.getConnection(url, props);
String [] northEastRegion = { "10022", "02110", "07399" };
Array anArray = con.createArrayOf("VARCHAR", northEastRegion);

ResultSet rs = stmt.executeQuery(
    "SELECT region_name, zips FROM REGIONS");

while (rs.next()) {
    Array z = rs.getArray("ZIPS");
    String[] zips = (String[])z.getArray();
    for (int i = 0; i < zips.length; i++) {
        if (!ZipCode.isValid(zips[i])) {
            // ...
            // Code to display warning
        }
    }
}

Array z = rs.getArray("ZIPS");

String[] zips = (String[])z.getArray();

PreparedStatement pstmt = con.prepareStatement(
    "insert into REGIONS (region_name, zips) " + "VALUES (?, ?)");
pstmt.setString(1, "NorthEast");
pstmt.setArray(2, anArray);
pstmt.executeUpdate();

Array aArray = con.createArrayOf("VARCHAR", northEastRegionnewYork);
// ...
aArray.free();

CREATE TYPE STATE AS CHAR(2);

CREATE DISTINCT TYPE STATE AS CHAR(2);

String state = rs.getString(4);

CREATE TYPE ADDRESS
(
    NUM INTEGER,
    STREET VARCHAR(40),
    CITY VARCHAR(40),
    STATE CHAR(2),
    ZIP CHAR(5)
);

String createAddress =
    "CREATE TYPE ADDRESS " +
    "(NUM INTEGER, STREET VARCHAR(40), " +
    "CITY VARCHAR(40), STATE CHAR(2), ZIP CHAR(5))";
Statement stmt = con.createStatement();
stmt.executeUpdate(createAddress);

CREATE TYPE PHONE_NO AS CHAR(10);

CREATE DISTINCT TYPE PHONE_NO AS CHAR(10);

String phoneNumber = rs.getString(4);

pstmt.setString(1, phoneNumber);

stmt.executeUpdate(
    "CREATE TYPE PHONE_NO AS CHAR(10)");

CREATE TYPE MANAGER
(
    MGR_ID INTEGER,
    LAST_NAME VARCHAR(40),
    FIRST_NAME VARCHAR(40),
    PHONE PHONE_NO
);

  String createManager =
    "CREATE TYPE MANAGER " +
    "(MGR_ID INTEGER, LAST_NAME " +
    "VARCHAR(40), " +
    "FIRST_NAME VARCHAR(40), " +
    "PHONE PHONE_NO)";
  stmt.executeUpdate(createManager);

  CREATE TABLE MANAGERS OF MANAGER
  (OID REF(MANAGER)
  VALUES ARE SYSTEM GENERATED);

  INSERT INTO MANAGERS (
    MGR_ID, LAST_NAME,
    FIRST_NAME, PHONE) VALUES
  (
    000001,
    'MONTOYA',
    'ALFREDO',
    '8317225600'
  );

  INSERT INTO MANAGERS (
    MGR_ID, LAST_NAME,
    FIRST_NAME, PHONE) VALUES
  (
    000002,
    'HASKINS',
    'MARGARET',
    '4084355600'
  );

  INSERT INTO MANAGERS (
    MGR_ID, LAST_NAME,
    FIRST_NAME, PHONE) VALUES
  (
    000003,
    'CHEN',
    'HELEN',
    '4153785600'
   );

  String selectMgr =
    "SELECT OID FROM MANAGERS " +
    "WHERE MGR_ID = 000001";
  ResultSet rs = stmt.executeQuery(selectMgr);
  rs.next();
  Ref manager = rs.getRef("OID");

package com.oracle.tutorial.jdbc;

import java.sql.*;

public class CreateRef {

    public static void main(String args[]) {

        JDBCTutorialUtilities myJDBCTutorialUtilities;
        Connection myConnection = null;

        if (args[0] == null) {
            System.err.println("Properties file not specified " +
                               "at command line");
            return;
        } else {
            try {
                myJDBCTutorialUtilities = new JDBCTutorialUtilities(args[0]);
            } catch (Exception e) {
                System.err.println("Problem reading properties " +
                                   "file " + args[0]);
                e.printStackTrace();
                return;
            }
        }

        Connection con = null;
        Statement stmt = null;

        try {
            String createManagers =
                "CREATE TABLE " +
                "MANAGERS OF MANAGER " +
                "(OID REF(MANAGER) " +
                "VALUES ARE SYSTEM " +
                "GENERATED)";

            String insertManager1 =
                "INSERT INTO MANAGERS " +
                "(MGR_ID, LAST_NAME, " +
                "FIRST_NAME, PHONE) " +
                "VALUES " +
                "(000001, 'MONTOYA', " +
                "'ALFREDO', " +
                "'8317225600')";

            String insertManager2 =
                "INSERT INTO MANAGERS " +
                "(MGR_ID, LAST_NAME, " +
                "FIRST_NAME, PHONE) " +
                "VALUES " +
                "(000002, 'HASKINS', " +
                "'MARGARET', " +
                "'4084355600')";

            String insertManager3 =
                "INSERT INTO MANAGERS " +
                "(MGR_ID, LAST_NAME, " +
                "FIRST_NAME, PHONE) " +
                "VALUES " +
                "(000003, 'CHEN', 'HELEN', " +
                "'4153785600')";

            con = myJDBCTutorialUtilities.getConnection();
            con.setAutoCommit(false);

            stmt = con.createStatement();
            stmt.executeUpdate(createManagers);

            stmt.addBatch(insertManager1);
            stmt.addBatch(insertManager2);
            stmt.addBatch(insertManager3);
            int [] updateCounts = stmt.executeBatch();

            con.commit();

            System.out.println("Update count for:  ");
            for (int i = 0; i < updateCounts.length; i++) {
                System.out.print("    command " + (i + 1) + " = ");
                System.out.println(updateCounts[i]);
            }
        } catch(BatchUpdateException b) {
            System.err.println("-----BatchUpdateException-----");
            System.err.println("Message:  " + b.getMessage());
            System.err.println("SQLState:  " + b.getSQLState());
            System.err.println("Vendor:  " + b.getErrorCode());
            System.err.print("Update counts for " + "successful commands:  ");
            int [] rowsUpdated = b.getUpdateCounts();
            for (int i = 0; i < rowsUpdated.length; i++) {
                System.err.print(rowsUpdated[i] + "   ");
            }
            System.err.println("");
        } catch(SQLException ex) {
            System.err.println("------SQLException------");
            System.err.println("Error message:  " + ex.getMessage());
            System.err.println("SQLState:  " + ex.getSQLState());
            System.err.println("Vendor:  " + ex.getErrorCode());
        } finally {
            if (stmt != null) { stmt.close(); }
              JDBCTutorialUtilities.closeConnection(con);
        }
    }
}

  CREATE TYPE COF_ARRAY AS ARRAY(10) OF VARCHAR(40);

  CREATE TABLE STORES
  (
    STORE_NO INTEGER,
    LOCATION ADDRESS,
    COF_TYPES COF_ARRAY,
    MGR REF(MANAGER)
  );

  INSERT INTO STORES VALUES
  (
    100001,
    ADDRESS(888, 'Main_Street',
      'Rancho_Alegre',
      'CA', '94049'),
    COF_ARRAY('Colombian', 'French_Roast',
      'Espresso', 'Colombian_Decaf',
      'French_Roast_Decaf'),
    SELECT OID FROM MANAGERS
      WHERE MGR_ID = 000001
  );

  STORE_NO: 100001

  LOCATION: ADDRESS(888, 'Main_Street',
    'Rancho_Alegre', 'CA', '94049')

  COF_TYPES: COF_ARRAY(
    'Colombian',
    'French_Roast',
    'Espresso',
    'Colombian_Decaf',
    'French_Roast_Decaf'),

  MGR: SELECT OID FROM MANAGERS
    WHERE MGR_ID = 000001

  String insertMgr =
    "INSERT INTO STORES VALUES " +
    "(100001, " +
    "ADDRESS(888, 'Main_Street', " +
      "'Rancho_Alegre', 'CA', " +
      "'94049'), " +
    "COF_ARRAY('Colombian', " +
      "'French_Roast', 'Espresso', " +
      "'Colombian_Decaf', " +
      "'French_Roast_Decaf'}, " +
    "SELECT OID FROM MANAGERS " +
    "WHERE MGR_ID = 000001)";

  stmt.executeUpdate(insertMgr);

package com.oracle.tutorial.jdbc;

import java.sql.*;

public class InsertStores {
    public static void main(String args[]) {

        JDBCTutorialUtilities myJDBCTutorialUtilities;
        Connection myConnection = null;

        if (args[0] == null) {
            System.err.println(
                "Properties file " +
                "not specified " +
                "at command line");
            return;
        } else {
            try {
                myJDBCTutorialUtilities = new
                    JDBCTutorialUtilities(args[0]);
            } catch (Exception e) {
                System.err.println(
                    "Problem reading " +
                    "properties file " +
                    args[0]);
                e.printStackTrace();
                return;
            }
        }

        Connection con = null;
        Statement stmt = null;

        try {
            con = myJDBCTutorialUtilities.getConnection();
            con.setAutoCommit(false);

            stmt = con.createStatement();

            String insertStore1 =
                "INSERT INTO STORES VALUES (" +
                "100001, " +
                "ADDRESS(888, 'Main_Street', " +
                    "'Rancho_Alegre', 'CA', " +
                    "'94049'), " +
                "COF_ARRAY('Colombian', " +
                    "'French_Roast', " +
                    "'Espresso', " +
                    "'Colombian_Decaf', " +
                    "'French_Roast_Decaf'), " +
                "(SELECT OID FROM MANAGERS " +
                "WHERE MGR_ID = 000001))";

            stmt.addBatch(insertStore1);

            String insertStore2 =
                "INSERT INTO STORES VALUES (" +
                "100002, " +
                "ADDRESS(1560, 'Alder', " +
                    "'Ochos_Pinos', " +
                    "'CA', '94049'), " +
                "COF_ARRAY('Colombian', " +
                    "'French_Roast', " +
                    "'Espresso', " +
                    "'Colombian_Decaf', " +
                    "'French_Roast_Decaf', " +
                    "'Kona', 'Kona_Decaf'), " +
                "(SELECT OID FROM MANAGERS " +
                "WHERE MGR_ID = 000001))";

            stmt.addBatch(insertStore2);

            String insertStore3 =
                "INSERT INTO STORES VALUES (" +
                "100003, " +
                "ADDRESS(4344, " +
                    "'First_Street', " +
                    "'Verona', " +
                    "'CA', '94545'), " +
                "COF_ARRAY('Colombian', " +
                    "'French_Roast', " +
                    "'Espresso', " +
                    "'Colombian_Decaf', " +
                    "'French_Roast_Decaf', " +
                    "'Kona', 'Kona_Decaf'), " +
                "(SELECT OID FROM MANAGERS " +
                "WHERE MGR_ID = 000002))";

            stmt.addBatch(insertStore3);

            String insertStore4 =
                "INSERT INTO STORES VALUES (" +
                "100004, " +
                "ADDRESS(321, 'Sandy_Way', " +
                    "'La_Playa', " +
                    "'CA', '94544'), " +
                "COF_ARRAY('Colombian', " +
                    "'French_Roast', " +
                    "'Espresso', " +
                    "'Colombian_Decaf', " +
                    "'French_Roast_Decaf', " +
                    "'Kona', 'Kona_Decaf'), " +
                "(SELECT OID FROM MANAGERS " +
                "WHERE MGR_ID = 000002))";

            stmt.addBatch(insertStore4);

            String insertStore5 =
                "INSERT INTO STORES VALUES (" +
                "100005, " +
                "ADDRESS(1000, 'Clover_Road', " +
                    "'Happyville', " +
                    "'CA', '90566'), " +
                "COF_ARRAY('Colombian', " +
                    "'French_Roast', " +
                    "'Espresso', " + 
                    "'Colombian_Decaf', " +
                    "'French_Roast_Decaf'), " +
                "(SELECT OID FROM MANAGERS " +
                "WHERE MGR_ID = 000003))";

            stmt.addBatch(insertStore5);

            int [] updateCounts = stmt.executeBatch();

            ResultSet rs = stmt.executeQuery(
                "SELECT * FROM STORES");
            System.out.println("Table STORES after insertion:");
            System.out.println("STORE_NO   " + "LOCATION   " +
                "COF_TYPE   " + "MGR");

            while (rs.next()) {
                int storeNo = rs.getInt("STORE_NO");
                Struct location = (Struct)rs.getObject("LOCATION");
                Object[] locAttrs = location.getAttributes();
                Array coffeeTypes = rs.getArray("COF_TYPE");
                String[] cofTypes = (String[])coffeeTypes.getArray();

                Ref managerRef = rs.getRef("MGR");
                PreparedStatement pstmt = con.prepareStatement(
                    "SELECT MANAGER " +
                    "FROM MANAGERS " +
                    "WHERE OID = ?");

                pstmt.setRef(1, managerRef);
                ResultSet rs2 = pstmt.executeQuery();
                rs2.next();
                Struct manager = (Struct)rs2.getObject("MANAGER");
                Object[] manAttrs = manager.getAttributes();

                System.out.print(storeNo + "   ");
                System.out.print(
                    locAttrs[0] + " " +
                    locAttrs[1] + " " +
                    locAttrs[2] + ", " +
                    locAttrs[3] + " " +
                    locAttrs[4] + " ");

                for (int i = 0; i < cofTypes.length; i++)
                    System.out.print( cofTypes[i] + " ");

                System.out.println(
                    manAttrs[1] + ", " +
                    manAttrs[2]);

                rs2.close();
                pstmt.close();
            }

            rs.close();

        } catch(BatchUpdateException b) {
            System.err.println("-----BatchUpdateException-----");
            System.err.println("SQLState:  " + b.getSQLState());
            System.err.println("Message:  " + b.getMessage());
            System.err.println("Vendor:  " + b.getErrorCode());
            System.err.print("Update counts:  ");
            int [] updateCounts = b.getUpdateCounts();

            for (int i = 0; i < updateCounts.length; i++) {
                System.err.print(updateCounts[i] + "   ");
            }
            System.err.println("");

        } catch(SQLException ex) {
            System.err.println("SQLException: " + ex.getMessage());
            System.err.println("SQLState:  " + ex.getSQLState());
            System.err.println("Message:  " + ex.getMessage());
            System.err.println("Vendor:  " + ex.getErrorCode());
        } finally {
            if (stmt != null) { stmt.close(); }
                JDBCTutorialUtilities.closeConnection(con);
            }
        }
    }
}

  CREATE TYPE ADDRESS
  (
    NUM INTEGER,
    STREET VARCHAR(40),
    CITY VARCHAR(40),
    STATE CHAR(2),
    ZIP CHAR(5)
  );

public class Address implements SQLData {
    public int num;
    public String street;
    public String city;
    public String state;
    public String zip;
    private String sql_type;

    public String getSQLTypeName() {
        return sql_type;
    }

    public void readSQL(SQLInput stream, String type)
        throws SQLException {
        sql_type = type;
        num = stream.readInt();
        street = stream.readString();
        city = stream.readString();
        state = stream.readString();
        zip = stream.readString();
    }

    public void writeSQL(SQLOutput stream)
        throws SQLException {
        stream.writeInt(num);
        stream.writeString(street);
        stream.writeString(city);
        stream.writeString(state);
        stream.writeString(zip);
    }
}

java.util.Map map = con.getTypeMap();
map.put("SchemaName.ADDRESS", Class.forName("Address"));
con.setTypeMap(map);

ResultSet rs = stmt.executeQuery(
    "SELECT LOCATION " +
    "WHERE STORE_NO = 100003");
rs.next();
Struct address = (Struct)rs.getObject("LOCATION");

ResultSet rs = stmt.executeQuery(
    "SELECT LOCATION " +
    "WHERE STORE_NO = 100003");
rs.next();
Address store_3 = (Address)rs.getObject("LOCATION");

ResultSet rs = stmt.executeQuery(
    "SELECT LOCATION " +
    "WHERE STORE_NO = 100003");
rs.next();
Address store_3 = (Address)rs.getObject("LOCATION");
store_3.num = 1800;
store_3.street = "Artsy_Alley";
store_3.city = "Arden";
store_3.state = "CA";
store_3.zip = "94546";
PreparedStatement pstmt = con.prepareStatement(
    "UPDATE STORES " +
    "SET LOCATION = ? " +
    "WHERE STORE_NO = 100003");
pstmt.setObject(1, store_3);
pstmt.executeUpdate();

PreparedStatement pstmt = con.prepareStatement(
    "UPDATE STORES " +
    "SET LOCATION.NUM = 1800, " +
    "LOCATION.STREET = 'Artsy_Alley', " + 
    "LOCATION.CITY = 'Arden', " +
    "LOCATION.STATE = 'CA', " +
    "LOCATION.ZIP = '94546' " +
    "WHERE STORE_NO = 100003");
pstmt.executeUpdate;

  public void addURLRow(String description, String url) throws SQLException {
    String query = "INSERT INTO data_repository(document_name,url) VALUES (?,?)";
    try (PreparedStatement pstmt = this.con.prepareStatement(query)) {
      pstmt.setString(1, description);
      pstmt.setURL(2,new URL(url));
      pstmt.execute();    
    } catch (SQLException sqlex) {
      JDBCTutorialUtilities.printSQLException(sqlex);
    } catch (Exception ex) {
      System.out.println("Unexpected exception");
      ex.printStackTrace();
    }
  }

  public static void viewTable(Connection con, Proxy proxy)
    throws SQLException, IOException {
    String query = "SELECT document_name, url FROM data_repository";
    try (Statement stmt = con.createStatement()) {
      ResultSet rs = stmt.executeQuery(query);
      if ( rs.next() )  {
        String documentName = null;
        java.net.URL url = null;
        documentName = rs.getString(1);
        // Retrieve the value as a URL object.
        url = rs.getURL(2);    
        if (url != null) {
          // Retrieve the contents from the URL.
          URLConnection myURLConnection = url.openConnection(proxy);
          BufferedReader bReader =
            new BufferedReader(new InputStreamReader(myURLConnection.getInputStream()));
          System.out.println("Document name: " + documentName);
          String pageContent = null;
          while ((pageContent = bReader.readLine()) != null ) {
            // Print the URL contents
            System.out.println(pageContent);
          }
        } else { 
          System.out.println("URL is null");
        } 
      }
    } catch (SQLException e) {
      JDBCTutorialUtilities.printSQLException(e);
    } catch(IOException ioEx) {
      System.out.println("IOException caught: " + ioEx.toString());
    } catch (Exception ex) {
      System.out.println("Unexpected exception");
      ex.printStackTrace();
    }
  }

url = rs.getURL(2);

          // Retrieve the contents from the URL.
          URLConnection myURLConnection = url.openConnection(proxy);
          BufferedReader bReader =
            new BufferedReader(new InputStreamReader(myURLConnection.getInputStream()));
          System.out.println("Document name: " + documentName);
          String pageContent = null;
          while ((pageContent = bReader.readLine()) != null ) {
            // Print the URL contents
            System.out.println(pageContent);
          }

Proxy myProxy;
InetSocketAddress myProxyServer;
myProxyServer = new InetSocketAddress("www-proxy.example.com", 80);
myProxy = new Proxy(Proxy.Type.HTTP, myProxyServer);

java.sql.RowId rowId_1 = rs.getRowId(1);

Connection conn = ds.getConnection(username, password);
PreparedStatement ps = conn.prepareStatement(
    "INSERT INTO BOOKLIST" +
    "(ID, AUTHOR, TITLE, ISBN) " +
    "VALUES (?, ?, ?, ?)");
ps.setRowId(1, rowId_1);

ResultSet rs = ...
rs.next();
rs.updateRowId(1, rowId_1);

public static void rowIdLifetime(Connection conn)
    throws SQLException {

    DatabaseMetaData dbMetaData = conn.getMetaData();
    RowIdLifetime lifetime = dbMetaData.getRowIdLifetime();

    switch (lifetime) {
        case ROWID_UNSUPPORTED:
            System.out.println("ROWID type not supported");
            break;

        case ROWID_VALID_FOREVER:
            System.out.println("ROWID has unlimited lifetime");
            break;

        case ROWID_VALID_OTHER:
            System.out.println("ROWID has indeterminate lifetime");
            break;

        case ROWID_VALID_SESSION:
            System.out.println(
                "ROWID type has lifetime that " +
                "is valid for at least the " +
                "containing session");
            break;

        case ROWID_VALID_TRANSACTION:
            System.out.println(
                "ROWID type has lifetime that " +
                "is valid for at least the " +
                "containing transaction");
            break;
    }
}

Acme, Inc.: Colombian_Decaf
Acme, Inc.: Colombian
Superior Coffee: French_Roast_Decaf
Superior Coffee: French_Roast
The High Ground: Espresso

Supplier of the coffee Colombian: Acme, Inc.

Contents of COFFEES table before calling RAISE_PRICE:
Colombian, 101, 7.99, 0, 0
Colombian_Decaf, 101, 8.99, 0, 0
Espresso, 150, 9.99, 0, 0
French_Roast, 49, 8.99, 0, 0
French_Roast_Decaf, 49, 9.99, 0, 0

Calling the procedure RAISE_PRICE

Value of newPrice after calling RAISE_PRICE: 8.79

Contents of COFFEES table after calling RAISE_PRICE:
Colombian, 101, 8.79, 0, 0
Colombian_Decaf, 101, 8.99, 0, 0
Espresso, 150, 9.99, 0, 0
French_Roast, 49, 8.99, 0, 0
French_Roast_Decaf, 49, 9.99, 0, 0

public static void showSuppliers(ResultSet[] rs)
    throws SQLException {

    Connection con = DriverManager.getConnection("jdbc:default:connection");
    Statement stmt = null;

    String query =
        "select SUPPLIERS.SUP_NAME, " +
        "COFFEES.COF_NAME " +
        "from SUPPLIERS, COFFEES " +
        "where SUPPLIERS.SUP_ID = " +
        "COFFEES.SUP_ID " +
        "order by SUP_NAME";

    stmt = con.createStatement();
    rs[0] = stmt.executeQuery(query);
}

public void createProcedures(Connection con)
    throws SQLException {

    Statement stmtCreateShowSuppliers = null;

    // ...

    String queryShowSuppliers =
        "CREATE PROCEDURE SHOW_SUPPLIERS() " +
        "PARAMETER STYLE JAVA " +
        "LANGUAGE JAVA " +
        "DYNAMIC RESULT SETS 1 " +
        "EXTERNAL NAME " +
        "'com.oracle.tutorial.jdbc." +
        "StoredProcedureJavaDBSample." +
        "showSuppliers'";

    // ...

    try {
        System.out.println("Calling CREATE PROCEDURE");
        stmtCreateShowSuppliers = con.createStatement();

        // ...

    } catch (SQLException e) {
        JDBCTutorialUtilities.printSQLException(e);
    } finally {
        if (stmtCreateShowSuppliers != null) {
            stmtCreateShowSuppliers.close();
        }
        // ...
    }
}

CREATE PROCEDURE GET_SUPPLIER_OF_COFFEE(
    IN coffeeName varchar(32),
    OUT supplierName
    varchar(40))
    PARAMETER STYLE JAVA
    LANGUAGE JAVA
    DYNAMIC RESULT SETS 0
    EXTERNAL NAME 'com.oracle.tutorial.jdbc.
        StoredProcedureJavaDBSample.
        getSupplierOfCoffee'

CREATE PROCEDURE RAISE_PRICE(
    IN coffeeName varchar(32),
    IN maximumPercentage float,
    INOUT newPrice float)
    PARAMETER STYLE JAVA
    LANGUAGE JAVA
    DYNAMIC RESULT SETS 0
    EXTERNAL NAME 'com.oracle.tutorial.jdbc.
        StoredProcedureJavaDBSample.raisePrice'

cs = this.con.prepareCall("{call SHOW_SUPPLIERS()}");
ResultSet rs = cs.executeQuery();

while (rs.next()) {
    String supplier = rs.getString("SUP_NAME");
    String coffee = rs.getString("COF_NAME");
    System.out.println(supplier + ": " + coffee);
}

cs = this.con.prepareCall("{call GET_SUPPLIER_OF_COFFEE(?, ?)}");
cs.setString(1, coffeeNameArg);
cs.registerOutParameter(2, Types.VARCHAR);
cs.executeQuery();

String supplierName = cs.getString(2);

cs = this.con.prepareCall("{call RAISE_PRICE(?,?,?)}");
cs.setString(1, coffeeNameArg);
cs.setFloat(2, maximumPercentageArg);
cs.registerOutParameter(3, Types.NUMERIC);
cs.setFloat(3, newPriceArg);

cs.execute();

CALL sqlj.install_jar(
  '*<JDBC tutorial directory>*/
  lib/JDBCTutorial.jar',
  'APP.JDBCTutorial', 0)
CALL sqlj.replace_jar(
  '*<JDBC tutorial directory>*/
  lib/JDBCTutorial.jar',
  'APP.JDBCTutorial')";
CALL syscs_util.syscs_set_database_property(
  'derby.database.classpath',
  'APP.JDBCTutorial')";

SELECT 'Dropping procedure SHOW_SUPPLIERS' AS ' '|
drop procedure if exists SHOW_SUPPLIERS|

# ...

SELECT 'Creating procedure SHOW_SUPPLIERS' AS ' '|
create procedure SHOW_SUPPLIERS()
    begin
        select SUPPLIERS.SUP_NAME,
        COFFEES.COF_NAME
        from SUPPLIERS, COFFEES
        where SUPPLIERS.SUP_ID = COFFEES.SUP_ID
        order by SUP_NAME;
    end|

<target name="mysql-create-procedure">

  <sql driver="${DB.DRIVER}"
       url="${DB.URL}" userid="${DB.USER}"
       password="${DB.PASSWORD}"
       classpathref="CLASSPATH"
       print="true"
       delimiter="|"
       autocommit="false"
       onerror="abort">
       <transaction
         src="./sql/${DB.VENDOR}/
           create-procedures.sql">
       </transaction>
  </sql>

</target>

  public void createProcedureShowSuppliers() throws SQLException {

    String queryDrop = "DROP PROCEDURE IF EXISTS SHOW_SUPPLIERS";

    String createProcedure =
        "create procedure SHOW_SUPPLIERS() " +
          "begin " +
            "select SUPPLIERS.SUP_NAME, COFFEES.COF_NAME " +
              "from SUPPLIERS, COFFEES " +
              "where SUPPLIERS.SUP_ID = COFFEES.SUP_ID " +
              "order by SUP_NAME; " +
          "end";

    try (Statement stmtDrop = con.createStatement()) {
      System.out.println("Calling DROP PROCEDURE");
      stmtDrop.execute(queryDrop);
    } catch (SQLException e) {
      JDBCTutorialUtilities.printSQLException(e);
    } 

    try (Statement stmt = con.createStatement()) {
      stmt.executeUpdate(createProcedure);
    } catch (SQLException e) {
      JDBCTutorialUtilities.printSQLException(e);
    }
  }

CallableStatement cs = null;
cs = this.con.prepareCall("{call SHOW_SUPPLIERS}");
ResultSet rs = cs.executeQuery();

  public void createProcedureGetSupplierOfCoffee() throws SQLException {

    String queryDrop = "DROP PROCEDURE IF EXISTS GET_SUPPLIER_OF_COFFEE";

    String createProcedure =
        "create procedure GET_SUPPLIER_OF_COFFEE(IN coffeeName varchar(32), OUT supplierName varchar(40)) " +
          "begin " +
            "select SUPPLIERS.SUP_NAME into supplierName " +
              "from SUPPLIERS, COFFEES " +
              "where SUPPLIERS.SUP_ID = COFFEES.SUP_ID " +
              "and coffeeName = COFFEES.COF_NAME; " +
            "select supplierName; " +
          "end";

    try (Statement stmtDrop = con.createStatement()) {
      System.out.println("Calling DROP PROCEDURE");
      stmtDrop.execute(queryDrop);
    } catch (SQLException e) {
      JDBCTutorialUtilities.printSQLException(e);
    }

    try (Statement stmt = con.createStatement()) {
      stmt.executeUpdate(createProcedure);
    } catch (SQLException e) {
      JDBCTutorialUtilities.printSQLException(e);
    }
  }

  public void createProcedureRaisePrice() throws SQLException {

    String queryDrop = "DROP PROCEDURE IF EXISTS RAISE_PRICE";

    String createProcedure =
        "create procedure RAISE_PRICE(IN coffeeName varchar(32), IN maximumPercentage float, INOUT newPrice numeric(10,2)) " +
          "begin " +
            "main: BEGIN " +
              "declare maximumNewPrice numeric(10,2); " +
              "declare oldPrice numeric(10,2); " +
              "select COFFEES.PRICE into oldPrice " +
                "from COFFEES " +
                "where COFFEES.COF_NAME = coffeeName; " +
              "set maximumNewPrice = oldPrice * (1 + maximumPercentage); " +
              "if (newPrice > maximumNewPrice) " +
                "then set newPrice = maximumNewPrice; " +
              "end if; " +
              "if (newPrice <= oldPrice) " +
                "then set newPrice = oldPrice;" +
                "leave main; " +
              "end if; " +
              "update COFFEES " +
                "set COFFEES.PRICE = newPrice " +
                "where COFFEES.COF_NAME = coffeeName; " +
              "select newPrice; " +
            "END main; " +
          "end";

    try (Statement stmtDrop = con.createStatement()) {
      System.out.println("Calling DROP PROCEDURE");
      stmtDrop.execute(queryDrop);
    } catch (SQLException e) {
      JDBCTutorialUtilities.printSQLException(e);
    }

    try (Statement stmt = con.createStatement()) {
      stmt.executeUpdate(createProcedure);
    } catch (SQLException e) {
      JDBCTutorialUtilities.printSQLException(e);
    }
  }

      cs = this.con.prepareCall("{call SHOW_SUPPLIERS}");
      ResultSet rs = cs.executeQuery();
      while (rs.next()) {
        String supplier = rs.getString("SUP_NAME");
        String coffee = rs.getString("COF_NAME");
        System.out.println(supplier + ": " + coffee);
      }

      cs = this.con.prepareCall("{call GET_SUPPLIER_OF_COFFEE(?, ?)}");
      cs.setString(1, coffeeNameArg);
      cs.registerOutParameter(2, Types.VARCHAR);
      cs.executeQuery();
      String supplierName = cs.getString(2);

      cs = this.con.prepareCall("{call RAISE_PRICE(?,?,?)}");
      cs.setString(1, coffeeNameArg);
      cs.setFloat(2, maximumPercentageArg);
      cs.registerOutParameter(3, Types.NUMERIC);
      cs.setFloat(3, newPriceArg);
      cs.execute();