Examples of java.sql.Connection.prepareStatement()

java.sql.Connection.prepareStatement()
A SQL statement with or without IN parameters can be pre-compiled and stored in a PreparedStatement object. This object can then be used to efficiently execute this statement multiple times.
Note: This method is optimized for handling parametric SQL statements that benefit from precompilation. If the driver supports precompilation, prepareStatement will send the statement to the database for precompilation. Some drivers may not support precompilation. In this case, the statement may not be sent to the database until the PreparedStatement is executed. This has no direct affect on users; however, it does affect which method throws certain SQLExceptions. @param sql a SQL statement that may contain one or more '?' INparameter placeholders @return a new PreparedStatement object containing thepre-compiled statement @exception SQLException if a database-access error occurs.

        rs0.getLong(1);
        rs0.wasNull();
        rs0.close();
        prep0.close();
        conn0.getAutoCommit();
        PreparedStatement prep1 = conn0
                .prepareStatement("insert into CLOB_ENTITY (DATA, CLOB_DATA, ID) values (?, ?, ?)");
        prep1.setNull(1, 2005);
        StringBuilder buff = new StringBuilder(10000);
        for (int i = 0; i < 10000; i++) {
            buff.append((char) ('0' + (i % 10)));

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        conn0.isClosed();
        conn0.getWarnings();
        conn0.clearWarnings();
        conn0.getAutoCommit();
        conn0.getAutoCommit();
        PreparedStatement prep2 = conn0
                .prepareStatement("select c_.ID as ID0_0_, c_.DATA as S_, " +
                        "c_.CLOB_DATA as CLOB3_0_0_ from CLOB_ENTITY c_ where c_.ID=?");
        prep2.setLong(1, 1);
        ResultSet rs1 = prep2.executeQuery();
        rs1.next();

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            conn.createStatement().execute("SET COMPRESS_LOB LZF");
        } else {
            conn.createStatement().execute("SET COMPRESS_LOB NO");
        }
        conn.createStatement().execute("CREATE TABLE TEST(ID INT PRIMARY KEY, C CLOB)");
        PreparedStatement prep = conn.prepareStatement("INSERT INTO TEST VALUES(?, ?)");
        long time = System.currentTimeMillis();
        int len = getSize(10, 40);
        if (config.networked && config.big) {
            len = 5;
        }

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            len = 100;
        }


        int first = 1, increment = 19;


        PreparedStatement prep = conn.prepareStatement("INSERT INTO TEST(ID, B, C) VALUES(?, ?, ?)");
        for (int i = first; i < len; i += increment) {
            int l = i;
            prep.setInt(1, i);
            prep.setBinaryStream(2, getRandomStream(l, i), -1);
            prep.setCharacterStream(3, getRandomReader(l, i), -1);

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            assertEquals(l, c.length());
            assertEqualStreams(getRandomStream(l, i), b.getBinaryStream(), -1);
            assertEqualReaders(getRandomReader(l, i), c.getCharacterStream(), -1);
        }


        prep = conn.prepareStatement("UPDATE TEST SET B=?, C=? WHERE ID=?");
        for (int i = first; i < len; i += increment) {
            int l = i;
            prep.setBinaryStream(1, getRandomStream(l, -i), -1);
            prep.setCharacterStream(2, getRandomReader(l, -i), -1);
            prep.setInt(3, i);

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    private void testClob() throws Exception {
        deleteDb("lob");
        Connection conn;
        conn = reconnect(null);
        conn.createStatement().execute("CREATE TABLE TEST(ID IDENTITY, C CLOB)");
        PreparedStatement prep = conn.prepareStatement("INSERT INTO TEST(C) VALUES(?)");
        prep.setCharacterStream(1, new CharArrayReader("Bohlen".toCharArray()), "Bohlen".length());
        prep.execute();
        prep.setCharacterStream(1, new CharArrayReader("B\u00f6hlen".toCharArray()), "B\u00f6hlen".length());
        prep.execute();
        prep.setCharacterStream(1, getRandomReader(501, 1), -1);

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    private void testUpdateLob() throws SQLException {
        deleteDb("lob");
        Connection conn;
        conn = reconnect(null);


        PreparedStatement prep = conn
                .prepareStatement("CREATE TABLE IF NOT EXISTS p( id int primary key, rawbyte BLOB ); ");
        prep.execute();
        prep.close();


        prep = conn.prepareStatement("INSERT INTO p(id) VALUES(?);");

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        PreparedStatement prep = conn
                .prepareStatement("CREATE TABLE IF NOT EXISTS p( id int primary key, rawbyte BLOB ); ");
        prep.execute();
        prep.close();


        prep = conn.prepareStatement("INSERT INTO p(id) VALUES(?);");
        for (int i = 0; i < 10; i++) {
            prep.setInt(1, i);
            prep.execute();
        }
        prep.close();

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            prep.setInt(1, i);
            prep.execute();
        }
        prep.close();


        prep = conn.prepareStatement("UPDATE p set rawbyte=? WHERE id=?");
        for (int i = 0; i < 8; i++) {
            prep.setBinaryStream(1, getRandomStream(10000, i), 0);
            prep.setInt(2, i);
            prep.execute();
        }

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        conn.commit();


        conn = reconnect(conn);


        conn.setAutoCommit(true);
        prep = conn.prepareStatement("UPDATE p set rawbyte=? WHERE id=?");
        for (int i = 8; i < 10; i++) {
            prep.setBinaryStream(1, getRandomStream(10000, i), 0);
            prep.setInt(2, i);
            prep.execute();
        }

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