Examples of LobHandler

org.springframework.jdbc.support.lob.LobHandler
Abstraction for handling large binary fields and large text fields in specific databases, no matter if represented as simple types or Large OBjects. Its main purpose is to isolate Oracle's peculiar handling of LOBs in {@link OracleLobHandler}; most other databases should be able to work with the provided {@link DefaultLobHandler}.
Provides accessor methods for BLOBs and CLOBs, and acts as factory for LobCreator instances, to be used as sessions for creating BLOBs or CLOBs. LobCreators are typically instantiated for each statement execution or for each transaction. They are not thread-safe because they might track allocated database resources to be able to free them after execution.
Most databases/drivers should be able to work with {@link DefaultLobHandler}, which by default delegates to JDBC's direct accessor methods, avoiding java.sql.Blob and java.sql.Clob completely. {@link DefaultLobHandler} can also be configured to populate LOBs usingPreparedStatement.setBlob/setClob (e.g. for PostgreSQL).
Unfortunately, Oracle 9i just accepts Blob/Clob instances created via its own proprietary BLOB/CLOB API, and additionally doesn't accept large streams for PreparedStatement's corresponding setter methods. Therefore, you need to use {@link OracleLobHandler} there, which uses Oracle's BLOB/CLOB API for both all access.The Oracle 10g JDBC driver should basically work with {@link DefaultLobHandler}as well, with some limitations in terms of LOB sizes.
Of course, you need to declare different field types for each database. In Oracle, any binary content needs to go into a BLOB, and all character content beyond 4000 bytes needs to go into a CLOB. In MySQL, there is no notion of a CLOB type but rather a LONGTEXT type that behaves like a VARCHAR. For complete portability, use a LobHandler for fields that might typically require LOBs on some database because of the field size (take Oracle's numbers as a guideline).
Summarizing the recommended options (for actual LOB fields):
- JDBC 4.0 driver: {@link DefaultLobHandler} with streamAsLob=true.
- PostgreSQL: {@link DefaultLobHandler} with wrapAsLob=true.
- Oracle 9i/10g: {@link OracleLobHandler} with a connection-pool-specific{@link OracleLobHandler#setNativeJdbcExtractor NativeJdbcExtractor}.
- For all other database drivers (and for non-LOB fields that might potentially turn into LOBs on some databases): a plain {@link DefaultLobHandler}.
@author Juergen Hoeller @since 23.12.2003 @see DefaultLobHandler @see OracleLobHandler @see java.sql.ResultSet#getBlob @see java.sql.ResultSet#getClob @see java.sql.ResultSet#getBytes @see java.sql.ResultSet#getBinaryStream @see java.sql.ResultSet#getString @see java.sql.ResultSet#getAsciiStream @see java.sql.ResultSet#getCharacterStream

Examples of org.springframework.jdbc.support.lob.LobHandler

    when(incrementerFactory.getIncrementer("ORACLE", tablePrefix + "JOB_SEQ")).thenReturn(new StubIncrementer());
    when(incrementerFactory.getIncrementer("ORACLE", tablePrefix + "JOB_EXECUTION_SEQ")).thenReturn(new StubIncrementer());
    when(incrementerFactory.getIncrementer("ORACLE", tablePrefix + "STEP_EXECUTION_SEQ")).thenReturn(new StubIncrementer());
    factory.setIncrementerFactory(incrementerFactory);


    LobHandler lobHandler = new DefaultLobHandler();
    factory.setLobHandler(lobHandler);


    factory.afterPropertiesSet();
    assertEquals(lobHandler, ReflectionTestUtils.getField(factory, "lobHandler"));

View Full Code Here

Examples of org.springframework.jdbc.support.lob.LobHandler

    _version1Instant = now.minusSeconds(100);
    _version2Instant = now.minusSeconds(50);
    s_logger.debug("test data now:   {}", _version1Instant);
    s_logger.debug("test data later: {}", _version2Instant);
    FudgeContext fudgeContext = OpenGammaFudgeContext.getInstance();
    LobHandler lobHandler = new DefaultLobHandler();
    final JdbcOperations template = _exgMaster.getDbConnector().getJdbcOperations();
    ManageableExchange exchange = new ManageableExchange();
    exchange.setUniqueId(UniqueId.of("DbExg", "101", "0"));
    exchange.setExternalIdBundle(ExternalIdBundle.of(ExternalId.of("A", "B"), ExternalId.of("C", "D"), ExternalId.of("E", "F")));
    exchange.setName("TestExchange101");

View Full Code Here

Examples of org.springframework.jdbc.support.lob.LobHandler

      UniqueId uniqueId = createUniqueId(docOid, docId);
      
      ManageableMarketDataSnapshot marketDataSnapshot;
      //PLAT-1378
      if (_includeData) {
        LobHandler lob = getDialect().getLobHandler();
        byte[] bytes = lob.getBlobAsBytes(rs, "DETAIL");
        marketDataSnapshot = FUDGE_CONTEXT.readObject(ManageableMarketDataSnapshot.class,
            new ByteArrayInputStream(bytes));
        if (!_includeData) {
          marketDataSnapshot.setGlobalValues(null);
          marketDataSnapshot.setYieldCurves(null);

View Full Code Here

Examples of org.springframework.jdbc.support.lob.LobHandler


  private void addExternalIds() {
    FudgeMsgEnvelope env = s_fudgeContext.toFudgeMsg(ExternalId.of("A", "B"));
    byte[] bytes = s_fudgeContext.toByteArray(env.getMessage());
    String cls = ExternalId.class.getName();
    LobHandler lobHandler = new DefaultLobHandler();
    final JdbcOperations template = _cfgMaster.getDbConnector().getJdbcOperations();
    template.update("INSERT INTO cfg_config VALUES (?,?,?,?,?, ?,?,?,?)",
        101, 101, toSqlTimestamp(_version1aInstant), MAX_SQL_TIMESTAMP, toSqlTimestamp(_version1aInstant), MAX_SQL_TIMESTAMP, "TestConfig101", cls,
        new SqlParameterValue(Types.BLOB, new SqlLobValue(bytes, lobHandler)));
    template.update("INSERT INTO cfg_config VALUES (?,?,?,?,?, ?,?,?,?)",

View Full Code Here

Examples of org.springframework.jdbc.support.lob.LobHandler

  
  private void addExternalIdBundles() {
    FudgeMsgEnvelope env = s_fudgeContext.toFudgeMsg(ExternalIdBundle.of(ExternalId.of("C", "D"), ExternalId.of("E", "F")));
    byte[] bytes = s_fudgeContext.toByteArray(env.getMessage());
    String cls = ExternalIdBundle.class.getName();
    LobHandler lobHandler = new DefaultLobHandler();
    final JdbcOperations template = _cfgMaster.getDbConnector().getJdbcOperations();
    template.update("INSERT INTO cfg_config VALUES (?,?,?,?,?, ?,?,?,?)",
        301, 301, toSqlTimestamp(_version1aInstant), MAX_SQL_TIMESTAMP, toSqlTimestamp(_version1aInstant), MAX_SQL_TIMESTAMP, "TestConfig301", cls,
        new SqlParameterValue(Types.BLOB, new SqlLobValue(bytes, lobHandler)));
    template.update("INSERT INTO cfg_config VALUES (?,?,?,?,?, ?,?,?,?)",

View Full Code Here

Examples of org.springframework.jdbc.support.lob.LobHandler

      final String name = rs.getString("NAME");
      final String type = rs.getString("SEC_TYPE");
      UniqueId uniqueId = createUniqueId(docOid, docId);
      String detailType = rs.getString("DETAIL_TYPE");
      if (detailType.equalsIgnoreCase("R")) {
        LobHandler lob = getDialect().getLobHandler();
        byte[] rawData = lob.getBlobAsBytes(rs, "RAW_DATA");
        _security = new RawSecurity(type, rawData);
        _security.setUniqueId(uniqueId);
        _security.setName(name);  
      } else {
        _security = new ManageableSecurity(uniqueId, name, type, ExternalIdBundle.EMPTY);

View Full Code Here

Examples of org.springframework.jdbc.support.lob.LobHandler

      final Timestamp versionTo = rs.getTimestamp("VER_TO_INSTANT");
      final Timestamp correctionFrom = rs.getTimestamp("CORR_FROM_INSTANT");
      final Timestamp correctionTo = rs.getTimestamp("CORR_TO_INSTANT");
      final String name = rs.getString("NAME");
      final String configType = rs.getString("CONFIG_TYPE");
      LobHandler lob = getDialect().getLobHandler();
      byte[] bytes = lob.getBlobAsBytes(rs, "CONFIG");
      Class<?> reifiedType = null;
      try {
        reifiedType = ClassUtils.loadClass(configType);
      } catch (ClassNotFoundException ex) {
        s_logger.warn("ConfigType: {} class can not be found for docOid: {}", configType, docOid);

View Full Code Here

Examples of org.springframework.jdbc.support.lob.LobHandler

      final long docOid = rs.getLong("DOC_OID");
      final Timestamp versionFrom = rs.getTimestamp("VER_FROM_INSTANT");
      final Timestamp versionTo = rs.getTimestamp("VER_TO_INSTANT");
      final Timestamp correctionFrom = rs.getTimestamp("CORR_FROM_INSTANT");
      final Timestamp correctionTo = rs.getTimestamp("CORR_TO_INSTANT");
      LobHandler lob = getDialect().getLobHandler();
      byte[] bytes = lob.getBlobAsBytes(rs, "DETAIL");
      ManageableExchange exchange = FUDGE_CONTEXT.readObject(ManageableExchange.class, new ByteArrayInputStream(bytes));
      
      ExchangeDocument doc = new ExchangeDocument();
      doc.setUniqueId(createUniqueId(docOid, docId));
      doc.setVersionFromInstant(DbDateUtils.fromSqlTimestamp(versionFrom));

View Full Code Here

0 1

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.