/**
   * Sets a property, metadata, or data value with the characters in the given array of characters,
   * starting with the array element indicated by <code>start</code> and continuing for <code>length
   * </code> number of characters.
   *
   * <p>The SAX parser invokes this method and supplies the character array, start position, and
   * length parameter values it got from parsing the XML document. An application programmer never
   * invokes this method directly.
   *
   * @param ch an array of characters supplied by the SAX parser, all or part of which will be used
   *     to set a value
   * @param start the position in the given array at which to start
   * @param length the number of consecutive characters to use
   */
  public void characters(char[] ch, int start, int length) throws SAXException {
    try {
      switch (getState()) {
        case PROPERTIES:
          propertyValue = new String(ch, start, length);

          /**
           * This has been added for handling of special characters. When special characters are
           * encountered the characters function gets called for each of the characters so we need
           * to append the value got in the previous call as it is the same data present between the
           * start and the end tag.
           */
          tempCommand = tempCommand.concat(propertyValue);
          propertyValue = tempCommand;

          // Added the following check for handling of type tags in maps
          if (tag == PropTypeTag) {
            Key_map = propertyValue;
          }

          // Added the following check for handling of class tags in maps
          else if (tag == PropClassTag) {
            Value_map = propertyValue;
          }
          break;

        case METADATA:

          // The parser will come here after the endElement as there is
          // "\n" in the after endTag is printed. This will cause a problem
          // when the data between the tags is an empty string so adding
          // below condition to take care of that situation.

          if (tag == -1) {
            break;
          }

          metaDataValue = new String(ch, start, length);
          break;
        case DATA:
          setDataValue(ch, start, length);
          break;
        default:;
      }
    } catch (SQLException ex) {
      throw new SAXException(
          resBundle.handleGetObject("xmlrch.chars").toString() + ex.getMessage());
    }
  }
  private void applyUpdates() throws SAXException {
    // now handle any updates
    if (updates.size() > 0) {
      try {
        Object upd[];
        Iterator<?> i = updates.iterator();
        while (i.hasNext()) {
          upd = (Object[]) i.next();
          idx = ((Integer) upd[0]).intValue();

          if (!(lastval.equals(upd[1]))) {
            insertValue((String) (upd[1]));
          }
        }

        rs.updateRow();
      } catch (SQLException ex) {
        throw new SAXException(
            MessageFormat.format(
                resBundle.handleGetObject("xmlrch.errupdrow").toString(), ex.getMessage()));
      }
      updates.removeAllElements();
    }
  }
Exemple #3
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  /**
   * ** Returns true if the specified key attribute exists in the table ** @param altIndexName The
   * alternate index name, or null to use the primary index ** @param whereKeyType The partial key
   * match type ** @return True if the specified key attribute exists in the table, false otherwise
   */
  protected boolean _exists(String altIndexName, int whereKeyType)
      throws SQLException, DBException {

    /* key fields */
    boolean usePrimaryKey = StringTools.isBlank(altIndexName);
    DBField kfld[] = usePrimaryKey ? this.getKeyFields() : this.getAltKeyFields(altIndexName);
    if (ListTools.isEmpty(kfld)) {
      throw new DBException("No keys found!");
    }

    /* check last key for "auto_increment" */
    if (whereKeyType == DBWhere.KEY_FULL) {
      DBField lastField = kfld[kfld.length - 1];
      if (lastField.isAutoIncrement()
          && !this.getFieldValues().hasFieldValue(lastField.getName())) {
        // full key requested and last key is auto_increment, which is missing
        return false;
      }
    }

    // DBSelect: SELECT <Keys> FROM <TableName> <KeyWhere>
    String firstKey = kfld[0].getName();
    DBSelect<gDBR> dsel = new DBSelect<gDBR>(this.getFactory());
    dsel.setSelectedFields(firstKey);
    dsel.setWhere(this._getWhereClause(altIndexName, whereKeyType));

    /* get keyed record */
    DBConnection dbc = null;
    Statement stmt = null;
    ResultSet rs = null;
    boolean exists = false;
    try {
      dbc = DBConnection.getDefaultConnection();
      stmt = dbc.execute(dsel.toString()); // may throw DBException
      rs = stmt.getResultSet();
      exists = rs.next();
    } catch (SQLException sqe) {
      if (sqe.getErrorCode() == DBFactory.SQLERR_TABLE_NOTLOCKED) {
        // MySQL: This case has been seen on rare occasions.  Not sure what causes it.
        Print.logError("SQL Lock Error: " + sqe);
        Print.logError("Hackery! Forcing lock on table: " + this.getTableName());
        if (DBProvider.lockTableForRead(this.getTableName(), true)) { // may throw DBException
          stmt = dbc.execute(dsel.toString()); // may throw SQLException, DBException
          rs = stmt.getResultSet(); // SQLException
          exists = rs.next(); // SQLException
          DBProvider.unlockTables(); // DBException
        }
      } else {
        throw sqe;
      }
    } finally {
      if (rs != null) {
        try {
          rs.close();
        } catch (Throwable t) {
        }
      }
      if (stmt != null) {
        try {
          stmt.close();
        } catch (Throwable t) {
        }
      }
      DBConnection.release(dbc);
    }

    return exists;
  }
  /**
   * Sets the value for the given element if <code>name</code> is one of the array elements in the
   * fields <code>properties</code>, <code>colDef</code>, or <code>data</code> and this <code>
   * XmlReaderContentHandler</code> object's state is not <code>INITIAL</code>. If the state is
   * <code>INITIAL</code>, this method does nothing.
   *
   * <p>If the state is <code>METADATA</code> and the argument supplied is <code>"metadata"</code>,
   * the rowset's metadata is set. If the state is <code>PROPERTIES</code>, the appropriate property
   * is set using the given name to determine the appropriate value. If the state is <code>DATA
   * </code> and the argument supplied is <code>"data"</code>, this method sets the state to <code>
   * INITIAL</code> and returns. If the argument supplied is one of the elements in the field <code>
   * data</code>, this method makes the appropriate changes to the rowset's data.
   *
   * @param lName the name of the element; either (1) one of the array elements in the fields <code>
   *     properties</code>, <code>colDef</code>, or <code>data</code> or (2) one of the <code>RowSet
   *     </code> elements <code>"properties"</code>, <code>"metadata"</code>, or <code>"data"</code>
   * @exception SAXException if a general SAX error occurs
   */
  @SuppressWarnings("fallthrough")
  public void endElement(String uri, String lName, String qName) throws SAXException {
    int tag;

    String name = "";
    name = lName;

    switch (getState()) {
      case PROPERTIES:
        if (name.equals("properties")) {
          state = INITIAL;
          break;
        }

        try {
          tag = propMap.get(name);
          switch (tag) {
            case KeycolsTag:
              if (keyCols != null) {
                int i[] = new int[keyCols.size()];
                for (int j = 0; j < i.length; j++) i[j] = Integer.parseInt(keyCols.elementAt(j));
                rs.setKeyColumns(i);
              }
              break;

            case PropClassTag:
              // Added the handling for Class tags to take care of maps
              // Makes an entry into the map upon end of class tag
              try {
                typeMap.put(Key_map, j86.sun.reflect.misc.ReflectUtil.forName(Value_map));

              } catch (ClassNotFoundException ex) {
                throw new SAXException(
                    MessageFormat.format(
                        resBundle.handleGetObject("xmlrch.errmap").toString(), ex.getMessage()));
              }
              break;

            case MapTag:
              // Added the handling for Map to take set the typeMap
              rs.setTypeMap(typeMap);
              break;

            default:
              break;
          }

          if (getNullValue()) {
            setPropertyValue(null);
            setNullValue(false);
          } else {
            setPropertyValue(propertyValue);
          }
        } catch (SQLException ex) {
          throw new SAXException(ex.getMessage());
        }

        // propertyValue need to be reset to an empty string
        propertyValue = "";
        setTag(-1);
        break;
      case METADATA:
        if (name.equals("metadata")) {
          try {
            rs.setMetaData(md);
            state = INITIAL;
          } catch (SQLException ex) {
            throw new SAXException(
                MessageFormat.format(
                    resBundle.handleGetObject("xmlrch.errmetadata").toString(), ex.getMessage()));
          }
        } else {
          try {
            if (getNullValue()) {
              setMetaDataValue(null);
              setNullValue(false);
            } else {
              setMetaDataValue(metaDataValue);
            }
          } catch (SQLException ex) {
            throw new SAXException(
                MessageFormat.format(
                    resBundle.handleGetObject("xmlrch.errmetadata").toString(), ex.getMessage()));
          }
          // metaDataValue needs to be reset to an empty string
          metaDataValue = "";
        }
        setTag(-1);
        break;
      case DATA:
        if (name.equals("data")) {
          state = INITIAL;
          return;
        }

        if (dataMap.get(name) == null) {
          tag = NullTag;
        } else {
          tag = dataMap.get(name);
        }
        switch (tag) {
          case ColTag:
            try {
              idx++;
              if (getNullValue()) {
                insertValue(null);
                setNullValue(false);
              } else {
                insertValue(tempStr);
              }
              // columnValue now need to be reset to the empty string
              columnValue = "";
            } catch (SQLException ex) {
              throw new SAXException(
                  MessageFormat.format(
                      resBundle.handleGetObject("xmlrch.errinsertval").toString(),
                      ex.getMessage()));
            }
            break;
          case RowTag:
            try {
              rs.insertRow();
              rs.moveToCurrentRow();
              rs.next();

              // Making this as the original to turn off the
              // rowInserted flagging
              rs.setOriginalRow();

              applyUpdates();
            } catch (SQLException ex) {
              throw new SAXException(
                  MessageFormat.format(
                      resBundle.handleGetObject("xmlrch.errconstr").toString(), ex.getMessage()));
            }
            break;
          case DelTag:
            try {
              rs.insertRow();
              rs.moveToCurrentRow();
              rs.next();
              rs.setOriginalRow();
              applyUpdates();
              rs.deleteRow();
            } catch (SQLException ex) {
              throw new SAXException(
                  MessageFormat.format(
                      resBundle.handleGetObject("xmlrch.errdel").toString(), ex.getMessage()));
            }
            break;
          case InsTag:
            try {
              rs.insertRow();
              rs.moveToCurrentRow();
              rs.next();
              applyUpdates();
            } catch (SQLException ex) {
              throw new SAXException(
                  MessageFormat.format(
                      resBundle.handleGetObject("xmlrch.errinsert").toString(), ex.getMessage()));
            }
            break;

          case InsDelTag:
            try {
              rs.insertRow();
              rs.moveToCurrentRow();
              rs.next();
              rs.setOriginalRow();
              applyUpdates();
            } catch (SQLException ex) {
              throw new SAXException(
                  MessageFormat.format(
                      resBundle.handleGetObject("xmlrch.errinsdel").toString(), ex.getMessage()));
            }
            break;

          case UpdTag:
            try {
              if (getNullValue()) {
                insertValue(null);
                setNullValue(false);
              } else if (getEmptyStringValue()) {
                insertValue("");
                setEmptyStringValue(false);
              } else {
                updates.add(upd);
              }
            } catch (SQLException ex) {
              throw new SAXException(
                  MessageFormat.format(
                      resBundle.handleGetObject("xmlrch.errupdate").toString(), ex.getMessage()));
            }
            break;

          default:
            break;
        }
      default:
        break;
    }
  }