Example usage for java.sql Clob setCharacterStream

Introduction

In this page you can find the example usage for java.sql Clob setCharacterStream.

Prototype

java.io.Writer setCharacterStream(long pos) throws SQLException;

Source Link

Document

Retrieves a stream to be used to write a stream of Unicode characters to the CLOB value that this Clob object represents, at position pos .

Usage

From source file:com.oracle.tutorial.jdbc.ClobSample.java

public void addRowToCoffeeDescriptions(String coffeeName, String fileName) throws SQLException {
    PreparedStatement pstmt = null;
    try {//  w  w  w. j a va 2s .c  om
        Clob myClob = this.con.createClob();

        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());
        String sql = "INSERT INTO COFFEE_DESCRIPTIONS VALUES(?,?)";
        pstmt = this.con.prepareStatement(sql);
        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());
    } finally {
        if (pstmt != null) {
            pstmt.close();
        }
    }
}

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From source file:org.apache.openjpa.jdbc.sql.DBDictionary.java

/**
 * Invoke the JDK 1.4 <code>setCharacterStream</code> method on the given
 * CLOB object./*from ww w .  j  ava  2  s  .c o m*/
 */
public void putChars(Clob clob, char[] data) throws SQLException {
    Writer writer = clob.setCharacterStream(1L);
    try {
        writer.write(data);
        writer.flush();
    } catch (IOException ioe) {
        throw new SQLException(ioe.toString());
    }
}

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From source file:org.apache.openjpa.jdbc.sql.DBDictionary.java

public void updateClob(Select sel, JDBCStore store, Reader reader) throws SQLException {
    SQLBuffer sql = sel.toSelect(true, store.getFetchConfiguration());
    ResultSet res = null;//  ww w . j ava 2 s  . co  m
    Connection conn = store.getConnection();
    PreparedStatement stmnt = null;
    try {
        stmnt = sql.prepareStatement(conn, store.getFetchConfiguration(), ResultSet.TYPE_SCROLL_SENSITIVE,
                ResultSet.CONCUR_UPDATABLE);
        setTimeouts(stmnt, store.getFetchConfiguration(), true);
        res = stmnt.executeQuery();
        if (!res.next()) {
            throw new InternalException(_loc.get("stream-exception"));
        }
        Clob clob = res.getClob(1);
        if (clob != null) {
            Writer writer = clob.setCharacterStream(1);
            copy(reader, writer);
            writer.close();
            res.updateClob(1, clob);
            res.updateRow();
        }

    } catch (IOException ioe) {
        throw new StoreException(ioe);
    } finally {
        if (res != null)
            try {
                res.close();
            } catch (SQLException e) {
            }
        if (stmnt != null)
            try {
                stmnt.close();
            } catch (SQLException e) {
            }
        if (conn != null)
            try {
                conn.close();
            } catch (SQLException e) {
            }
    }
}

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From source file:org.etudes.jforum.dao.oracle.OracleUtils.java

/**
 * Writes clob to database //  ww  w  .  j  a va  2s. c  o  m
 * @param query
 * @param idForQuery
 * @param value
 * @throws IOException
 * @throws SQLException
 */
public static void writeClobUTF16BinaryStream(String query, int idForQuery, String value)
        throws IOException, SQLException {
    PreparedStatement p = JForum.getConnection().prepareStatement(query);
    p.setInt(1, idForQuery);

    ResultSet rs = p.executeQuery();
    rs.next();
    Clob clobval = rs.getClob(1);

    if (logger.isDebugEnabled())
        logger.debug("clobval is " + clobval.getClass().getName());

    Writer clobWriter = clobval.setCharacterStream(0L);

    char[] cbuffer = new char[value.length()];
    int srcBegin = 0, dstBegin = 0;
    value.getChars(srcBegin, value.length(), cbuffer, dstBegin);
    clobWriter.write(cbuffer);

    clobWriter.close();

    rs.close();
    p.close();
}

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From source file:org.kawanfw.test.api.client.InsertAndUpdateClobTestNew.java

public void updateclob(Connection connection, File file) throws Exception {
    PreparedStatement prepStatement = null;

    String sql = "update documentation set " + " item_doc  = ? " + "     where  item_id >= ?";

    prepStatement = connection.prepareStatement(sql);

    Clob clob = connection.createClob();

    Writer writer = null;//from w  ww .j av  a  2s .  c om
    Reader reader = null;

    try {
        reader = new BufferedReader(new FileReader(file));
        writer = clob.setCharacterStream(1);

        IOUtils.copy(reader, writer);

        int i = 1;
        prepStatement.setClob(i++, clob);
        prepStatement.setInt(i++, 1);

        prepStatement.executeUpdate();
        // Close and free are important to delete temp files
        prepStatement.close();
        clob.free();
    } finally {
        IOUtils.closeQuietly(reader);
        IOUtils.closeQuietly(writer);
    }

}

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From source file:org.pentaho.di.jdbc.Support.java

/**
 * Convert an existing data object to the specified JDBC type.
 *
 * @param callerReference an object reference to the caller of this method;
 *                        must be a <code>Connection</code>,
 *                        <code>Statement</code> or <code>ResultSet</code>
 * @param x               the data object to convert
 * @param jdbcType        the required type constant from
 *                        <code>java.sql.Types</code>
 * @return the converted data object/*from  w w  w .j a  va2s .com*/
 * @throws SQLException if the conversion is not supported or fails
 */
static Object convert(Object callerReference, Object x, int jdbcType, String charSet) throws SQLException {
    try {
        switch (jdbcType) {
        case java.sql.Types.TINYINT:
        case java.sql.Types.SMALLINT:
        case java.sql.Types.INTEGER:
            if (x == null) {
                return INTEGER_ZERO;
            } else if (x instanceof Integer) {
                return x;
            } else if (x instanceof Byte) {
                return new Integer(((Byte) x).byteValue() & 0xFF);
            } else if (x instanceof Number) {
                return new Integer(((Number) x).intValue());
            } else if (x instanceof String) {
                return new Integer(((String) x).trim());
            } else if (x instanceof Boolean) {
                return ((Boolean) x).booleanValue() ? INTEGER_ONE : INTEGER_ZERO;
            }
            break;

        case java.sql.Types.BIGINT:
            if (x == null) {
                return LONG_ZERO;
            } else if (x instanceof Long) {
                return x;
            } else if (x instanceof Byte) {
                return new Long(((Byte) x).byteValue() & 0xFF);
            } else if (x instanceof Number) {
                return new Long(((Number) x).longValue());
            } else if (x instanceof String) {
                return new Long(((String) x).trim());
            } else if (x instanceof Boolean) {
                return ((Boolean) x).booleanValue() ? LONG_ONE : LONG_ZERO;
            }

            break;

        case java.sql.Types.REAL:
            if (x == null) {
                return FLOAT_ZERO;
            } else if (x instanceof Float) {
                return x;
            } else if (x instanceof Byte) {
                return new Float(((Byte) x).byteValue() & 0xFF);
            } else if (x instanceof Number) {
                return new Float(((Number) x).floatValue());
            } else if (x instanceof String) {
                return new Float(((String) x).trim());
            } else if (x instanceof Boolean) {
                return ((Boolean) x).booleanValue() ? FLOAT_ONE : FLOAT_ZERO;
            }

            break;

        case java.sql.Types.FLOAT:
        case java.sql.Types.DOUBLE:
            if (x == null) {
                return DOUBLE_ZERO;
            } else if (x instanceof Double) {
                return x;
            } else if (x instanceof Byte) {
                return new Double(((Byte) x).byteValue() & 0xFF);
            } else if (x instanceof Number) {
                return new Double(((Number) x).doubleValue());
            } else if (x instanceof String) {
                return new Double(((String) x).trim());
            } else if (x instanceof Boolean) {
                return ((Boolean) x).booleanValue() ? DOUBLE_ONE : DOUBLE_ZERO;
            }

            break;

        case java.sql.Types.NUMERIC:
        case java.sql.Types.DECIMAL:
            if (x == null) {
                return null;
            } else if (x instanceof BigDecimal) {
                return x;
            } else if (x instanceof Number) {
                return new BigDecimal(x.toString());
            } else if (x instanceof String) {
                return new BigDecimal((String) x);
            } else if (x instanceof Boolean) {
                return ((Boolean) x).booleanValue() ? BIG_DECIMAL_ONE : BIG_DECIMAL_ZERO;
            }

            break;

        case java.sql.Types.VARCHAR:
        case java.sql.Types.CHAR:
            if (x == null) {
                return null;
            } else if (x instanceof String) {
                return x;
            } else if (x instanceof Number) {
                return x.toString();
            } else if (x instanceof Boolean) {
                return ((Boolean) x).booleanValue() ? "1" : "0";
            } else if (x instanceof Clob) {
                Clob clob = (Clob) x;
                long length = clob.length();

                if (length > Integer.MAX_VALUE) {
                    throw new SQLException(BaseMessages.getString(PKG, "error.normalize.lobtoobig"), "22000");
                }

                return clob.getSubString(1, (int) length);
            } else if (x instanceof Blob) {
                Blob blob = (Blob) x;
                long length = blob.length();

                if (length > Integer.MAX_VALUE) {
                    throw new SQLException(BaseMessages.getString(PKG, "error.normalize.lobtoobig"), "22000");
                }

                x = blob.getBytes(1, (int) length);
            }

            if (x instanceof byte[]) {
                return toHex((byte[]) x);
            }

            return x.toString(); // Last hope!

        case java.sql.Types.BIT:
        case java.sql.Types.BOOLEAN:
            if (x == null) {
                return Boolean.FALSE;
            } else if (x instanceof Boolean) {
                return x;
            } else if (x instanceof Number) {
                return (((Number) x).intValue() == 0) ? Boolean.FALSE : Boolean.TRUE;
            } else if (x instanceof String) {
                String tmp = ((String) x).trim();

                return ("1".equals(tmp) || "true".equalsIgnoreCase(tmp)) ? Boolean.TRUE : Boolean.FALSE;
            }

            break;

        case java.sql.Types.VARBINARY:
        case java.sql.Types.BINARY:
            if (x == null) {
                return null;
            } else if (x instanceof byte[]) {
                return x;
            } else if (x instanceof Blob) {
                Blob blob = (Blob) x;

                return blob.getBytes(1, (int) blob.length());
            } else if (x instanceof Clob) {
                Clob clob = (Clob) x;
                long length = clob.length();

                if (length > Integer.MAX_VALUE) {
                    throw new SQLException(BaseMessages.getString(PKG, "error.normalize.lobtoobig"), "22000");
                }

                x = clob.getSubString(1, (int) length);
            }

            if (x instanceof String) {
                //
                // Strictly speaking this conversion is not required by
                // the JDBC standard but jTDS has always supported it.
                //
                if (charSet == null) {
                    charSet = "ISO-8859-1";
                }

                try {
                    return ((String) x).getBytes(charSet);
                } catch (UnsupportedEncodingException e) {
                    return ((String) x).getBytes();
                }
            } else if (x instanceof UniqueIdentifier) {
                return ((UniqueIdentifier) x).getBytes();
            }

            break;

        case java.sql.Types.TIMESTAMP:
            if (x == null) {
                return null;
            } else if (x instanceof DateTime) {
                return ((DateTime) x).toTimestamp();
            } else if (x instanceof java.sql.Timestamp) {
                return x;
            } else if (x instanceof java.sql.Date) {
                return new java.sql.Timestamp(((java.sql.Date) x).getTime());
            } else if (x instanceof java.sql.Time) {
                return new java.sql.Timestamp(((java.sql.Time) x).getTime());
            } else if (x instanceof java.lang.String) {
                return java.sql.Timestamp.valueOf(((String) x).trim());
            }

            break;

        case java.sql.Types.DATE:
            if (x == null) {
                return null;
            } else if (x instanceof DateTime) {
                return ((DateTime) x).toDate();
            } else if (x instanceof java.sql.Date) {
                return x;
            } else if (x instanceof java.sql.Time) {
                return DATE_ZERO;
            } else if (x instanceof java.sql.Timestamp) {
                synchronized (cal) {
                    cal.setTime((java.util.Date) x);
                    cal.set(Calendar.HOUR_OF_DAY, 0);
                    cal.set(Calendar.MINUTE, 0);
                    cal.set(Calendar.SECOND, 0);
                    cal.set(Calendar.MILLISECOND, 0);
                    // VM1.4+ only              return new java.sql.Date(cal.getTimeInMillis());
                    return new java.sql.Date(cal.getTime().getTime());
                }
            } else if (x instanceof java.lang.String) {
                return java.sql.Date.valueOf(((String) x).trim());
            }

            break;

        case java.sql.Types.TIME:
            if (x == null) {
                return null;
            } else if (x instanceof DateTime) {
                return ((DateTime) x).toTime();
            } else if (x instanceof java.sql.Time) {
                return x;
            } else if (x instanceof java.sql.Date) {
                return TIME_ZERO;
            } else if (x instanceof java.sql.Timestamp) {
                synchronized (cal) {
                    // VM 1.4+ only             cal.setTimeInMillis(((java.sql.Timestamp)x).getTime());
                    cal.setTime((java.util.Date) x);
                    cal.set(Calendar.YEAR, 1970);
                    cal.set(Calendar.MONTH, 0);
                    cal.set(Calendar.DAY_OF_MONTH, 1);
                    // VM 1.4+ only             return new java.sql.Time(cal.getTimeInMillis());*/
                    return new java.sql.Time(cal.getTime().getTime());
                }
            } else if (x instanceof java.lang.String) {
                return java.sql.Time.valueOf(((String) x).trim());
            }

            break;

        case java.sql.Types.OTHER:
            return x;

        case java.sql.Types.JAVA_OBJECT:
            throw new SQLException(BaseMessages.getString(PKG, "error.convert.badtypes", x.getClass().getName(),
                    getJdbcTypeName(jdbcType)), "22005");

        case java.sql.Types.LONGVARBINARY:
        case java.sql.Types.BLOB:
            if (x == null) {
                return null;
            } else if (x instanceof Blob) {
                return x;
            } else if (x instanceof byte[]) {
                return new BlobImpl(getConnection(callerReference), (byte[]) x);
            } else if (x instanceof Clob) {
                //
                // Convert CLOB to BLOB. Not required by the standard but we will
                // do it anyway.
                //
                Clob clob = (Clob) x;
                try {
                    if (charSet == null) {
                        charSet = "ISO-8859-1";
                    }
                    Reader rdr = clob.getCharacterStream();
                    BlobImpl blob = new BlobImpl(getConnection(callerReference));
                    BufferedWriter out = new BufferedWriter(
                            new OutputStreamWriter(blob.setBinaryStream(1), charSet));
                    // TODO Use a buffer to improve performance
                    int c;
                    while ((c = rdr.read()) >= 0) {
                        out.write(c);
                    }
                    out.close();
                    rdr.close();
                    return blob;
                } catch (UnsupportedEncodingException e) {
                    // Unlikely to happen but fall back on in memory copy
                    x = clob.getSubString(1, (int) clob.length());
                } catch (IOException e) {
                    throw new SQLException(BaseMessages.getString(PKG, "error.generic.ioerror", e.getMessage()),
                            "HY000");
                }
            }

            if (x instanceof String) {
                //
                // Strictly speaking this conversion is also not required by
                // the JDBC standard but jTDS has always supported it.
                //
                BlobImpl blob = new BlobImpl(getConnection(callerReference));
                String data = (String) x;

                if (charSet == null) {
                    charSet = "ISO-8859-1";
                }

                try {
                    blob.setBytes(1, data.getBytes(charSet));
                } catch (UnsupportedEncodingException e) {
                    blob.setBytes(1, data.getBytes());
                }

                return blob;
            }

            break;

        case java.sql.Types.LONGVARCHAR:
        case java.sql.Types.CLOB:
            if (x == null) {
                return null;
            } else if (x instanceof Clob) {
                return x;
            } else if (x instanceof Blob) {
                //
                // Convert BLOB to CLOB
                //
                Blob blob = (Blob) x;
                try {
                    InputStream is = blob.getBinaryStream();
                    ClobImpl clob = new ClobImpl(getConnection(callerReference));
                    Writer out = clob.setCharacterStream(1);
                    // TODO Use a buffer to improve performance
                    int b;
                    // These reads/writes are buffered by the undelying blob buffers
                    while ((b = is.read()) >= 0) {
                        out.write(hex[b >> 4]);
                        out.write(hex[b & 0x0F]);
                    }
                    out.close();
                    is.close();
                    return clob;
                } catch (IOException e) {
                    throw new SQLException(BaseMessages.getString(PKG, "error.generic.ioerror", e.getMessage()),
                            "HY000");
                }
            } else if (x instanceof Boolean) {
                x = ((Boolean) x).booleanValue() ? "1" : "0";
            } else if (!(x instanceof byte[])) {
                x = x.toString();
            }

            if (x instanceof byte[]) {
                ClobImpl clob = new ClobImpl(getConnection(callerReference));
                clob.setString(1, toHex((byte[]) x));

                return clob;
            } else if (x instanceof String) {
                return new ClobImpl(getConnection(callerReference), (String) x);
            }

            break;

        default:
            throw new SQLException(
                    BaseMessages.getString(PKG, "error.convert.badtypeconst", getJdbcTypeName(jdbcType)),
                    "HY004");
        }

        throw new SQLException(BaseMessages.getString(PKG, "error.convert.badtypes", x.getClass().getName(),
                getJdbcTypeName(jdbcType)), "22005");
    } catch (NumberFormatException nfe) {
        throw new SQLException(
                BaseMessages.getString(PKG, "error.convert.badnumber", getJdbcTypeName(jdbcType)), "22000");
    }
}

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From source file:org.springframework.jdbc.support.lob.TemporaryLobCreator.java

@Override
public void setClobAsCharacterStream(PreparedStatement ps, int paramIndex, @Nullable Reader characterStream,
        int contentLength) throws SQLException {

    if (characterStream != null) {
        Clob clob = ps.getConnection().createClob();
        try {/*from w w w . j av a 2s  .c  o  m*/
            FileCopyUtils.copy(characterStream, clob.setCharacterStream(1));
        } catch (IOException ex) {
            throw new DataAccessResourceFailureException("Could not copy into LOB stream", ex);
        }
        this.temporaryClobs.add(clob);
        ps.setClob(paramIndex, clob);
    } else {
        ps.setClob(paramIndex, (Clob) null);
    }

    if (logger.isDebugEnabled()) {
        logger.debug(characterStream != null
                ? "Copied character stream into temporary CLOB with length " + contentLength
                : "Set CLOB to null");
    }
}

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From source file:org.xsystem.sql2.dml.DmlCommand.java

Clob setClob(Connection con, String data) throws SQLException {
    Clob myClob = con.createClob();
    Writer wr = myClob.setCharacterStream(0);
    try {/*  w  w w  . jav a2 s  .  c om*/
        wr.write(data);
        wr.flush();
        return myClob;
    } catch (IOException ex) {
        throw new SQLException(ex);
    } finally {
        Auxilary.close(wr);
    }

}

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