示例#1
0
  /**
   * Returns a table's foreign keys and their columns as a Map from the key name to the ForeignKey
   * object.
   *
   * <p>A foreign key may not have a name. On such a database, 2 foreign keys must reference 2
   * different tables. Otherwise there's no way to tell them apart and the foreign key information
   * reported by DatabaseMetaData becomes ill-formed.
   */
  public static Map<String, ForeignKey> getForeignKeys(DatabaseMetaData metadata, String tableName)
      throws Exception {
    ResultSet keys =
        metadata.getImportedKeys(
            metadata.getConnection().getCatalog(), metadata.getUserName(), tableName);
    Map<String, ForeignKey> map = new HashMap<String, ForeignKey>();

    while (keys.next()) {
      String table = keys.getString(IMPORTED_PK_TAB_NAME);
      String name = keys.getString(IMPORTED_FK_KEY_NAME);
      if (name == null || name.length() == 0) name = "UNNAMED_FK_" + table;

      ForeignKey key = map.get(name);
      if (key == null) {
        map.put(name, key = new ForeignKey(table));
      }
      key.add(keys.getString(IMPORTED_FK_COL_NAME));
    }
    keys.close();
    return map;
  }
示例#2
0
  public void copyDbData(String dbin, String dbout) throws SQLException {
    // Do some connections and collect statements
    Connection inConn = makeConnection(dbin);
    Statement inSt = inConn.createStatement();
    DatabaseMetaData dbmeta = inConn.getMetaData();

    Connection outConn = makeConnection(dbout);
    Statement outSt = outConn.createStatement();

    ResultSet tables = getTables(inConn);
    forEach(
        tables,
        rs -> {
          try {
            // Okay, we'v got our table name
            String tableName = rs.getString("TABLE_NAME");

            // PreparedStatement st = DriverManager.getConnection(addr, user,
            // passwd).prepareStatement(format("CREATE TABLE %s.%s (LIKE %s.%s)", dbout, tableName,
            // dbin, tableName));
            // st.execute();
            // st.close();

            // Lets fetch all data from it
            ResultSet data = inSt.executeQuery(format("SELECT * FROM \"%s\"", tableName));

            // Lets get table schema from metadata and generate creation operator
            ResultSetMetaData datamd = data.getMetaData();
            int columnCount = datamd.getColumnCount();

            StringBuilder sb = new StringBuilder();
            sb.append("CREATE TABLE ").append(tableName).append(" (");

            for (int i = 1; i <= columnCount; i++) {
              if (i > 1) sb.append(", ");
              sb.append(datamd.getColumnName(i)).append(" ").append(datamd.getColumnTypeName(i));

              if (datamd.isNullable(i) == ResultSetMetaData.columnNoNulls) sb.append(" NOT NULL");
              // Tons of parameters could be parsed here except of references and keys

              // if (precision != 0) {
              //    sb.append("(").append(precision).append(")");
              // }

              switch (datamd.getColumnTypeName(i)) {
                case "character":
                case "time":
                case "":
                  sb.append("(").append(datamd.getPrecision(i)).append(")");
              }
            }
            sb.append(");");

            // Looks good, lets create this in our outer database
            LOGGER.info("Execute: '{}'", sb.toString());

            outSt.execute(sb.toString());

            // Setting up primary keys
            Map<String, StringBuilder> primaryKeys = new HashMap<>();
            ResultSet primaryKeysRs = dbmeta.getPrimaryKeys(null, null, tableName);
            forEach(
                primaryKeysRs,
                pkRs -> {
                  try {
                    String columName = pkRs.getString("COLUMN_NAME");
                    String pkName = pkRs.getString("PK_NAME");

                    if (!primaryKeys.containsKey(pkName)) {
                      primaryKeys.put(pkName, new StringBuilder(columName));
                    } else {
                      primaryKeys.get(pkName).append(", ").append(columName);
                    }

                  } catch (SQLException e) {
                    // Should never be reached
                    e.printStackTrace();
                  }
                });

            primaryKeys
                .entrySet()
                .forEach(
                    entry -> {
                      String pkName = entry.getKey();
                      String pk = entry.getValue().toString();
                      String query = format("ALTER TABLE %s ADD PRIMARY KEY (%s)", tableName, pk);
                      try {
                        LOGGER.info("Execute: '{}'", query);
                        outSt.executeUpdate(query);
                      } catch (SQLException e) {
                        LOGGER.error("Setting '{}' as primary key in '{}' failed", pk, tableName);
                        e.printStackTrace();
                      }
                    });

            // Generate insertion statement
            StringBuilder prepareQuery = new StringBuilder("INSERT INTO ");
            prepareQuery.append(tableName).append(" VALUES (");
            for (int i = 0; i < columnCount; i++) {
              if (i > 0) prepareQuery.append(", ");
              prepareQuery.append("?");
            }
            prepareQuery.append(");");

            LOGGER.info("Prepare statement with: {}", prepareQuery);
            PreparedStatement pst = outConn.prepareStatement(prepareQuery.toString());

            // And put all our's data in it
            forEach(
                data,
                dataRs -> {
                  try {
                    for (int i = 1; i <= columnCount; i++) {
                      pst.setObject(i, dataRs.getObject(i));
                    }

                    LOGGER.info("Execute: '{}'", pst.toString());
                    pst.execute();
                  } catch (SQLException e) {
                    e.printStackTrace();
                  }

                  /*
                  try {
                      StringBuilder insert = new StringBuilder();
                      insert.append("INSERT INTO \"").append(tableName).append("\" VALUES (");
                      for (int i = 1; i <= columnCount; i++) {
                          if (i > 1) insert.append(", ");
                          insert.append(dataRs.getString(i));
                      }
                      insert.append(");");
                      // Finally put insert it in table
                      // Timestamps would be inserted incorrect
                      LOGGER.info("Execute: '{}'", insert.toString());
                      outSt.executeUpdate(insert.toString());
                  } catch (SQLException e) {
                      LOGGER.error("Failed to insert into '{}'", tableName);
                  }
                  */
                });
          } catch (SQLException e) {
            LOGGER.error("Failed to create table");
            e.printStackTrace();
          }
        });

    // Lets deal up with foreign keys
    tables.beforeFirst();
    forEach(
        tables,
        rs -> {
          try {
            String tableName = rs.getString("TABLE_NAME");
            ResultSet foreignKeysRs = dbmeta.getImportedKeys(null, null, tableName);
            Map<String, String> pkTables = new HashMap<>();
            Map<String, StringBuilder> pkKeys = new HashMap<>();
            Map<String, StringBuilder> fkKeys = new HashMap<>();
            forEach(
                foreignKeysRs,
                keyRs -> {
                  try {

                    String pkTable = keyRs.getString("PKTABLE_NAME");
                    String pkColumn = keyRs.getString("PKCOLUMN_NAME");
                    String fkColumn = keyRs.getString("FKCOLUMN_NAME");
                    String fkName = keyRs.getString("FK_NAME");

                    if (!pkTables.containsKey(fkName)) {
                      pkTables.put(fkName, pkTable);
                      pkKeys.put(fkName, new StringBuilder(pkColumn));
                      fkKeys.put(fkName, new StringBuilder(fkColumn));
                    } else {
                      pkKeys.get(fkName).append(", ").append(pkColumn);
                      fkKeys.get(fkName).append(", ").append(fkColumn);
                    }

                  } catch (SQLException e) {
                    e.printStackTrace();
                    // Should newer be reached
                  }
                });
            pkTables
                .entrySet()
                .forEach(
                    entry -> {
                      String keyName = entry.getKey();
                      String extTableName = entry.getValue();

                      String alterFK =
                          format(
                              "ALTER TABLE %s ADD FOREIGN KEY (%s) REFERENCES %s(%s);",
                              tableName,
                              // keyName,
                              fkKeys.get(keyName),
                              extTableName,
                              pkKeys.get(keyName));

                      LOGGER.info("Execute: '{}'", alterFK);

                      try {
                        outSt.executeUpdate(alterFK);
                      } catch (SQLException e) {
                        e.printStackTrace();
                      }
                    });

          } catch (SQLException e) {
            e.printStackTrace();
          }
        });
  }
示例#3
0
  public static void main(String arg[]) {
    Hashtable ignoreList = new Hashtable();
    Class cl = null;
    Model model = null;
    System.out.println("Synchronizing forms with database...");
    Db.init();

    try {
      DatabaseMetaData meta = Db.getCon().getMetaData();
      String[] types = {"TABLE"};
      ResultSet rs = meta.getTables(null, null, "%", types);

      // read ignore.list
      ignoreList = AutogenerateUtil.readIgnoreList();
      // prepare directory
      File fDir = new File("../../web/WEB-INF/views/crud_form");
      if (!fDir.exists()) fDir.mkdir();
      while (rs.next()) {
        // proper file name generationm
        String className = "";
        String tableName = rs.getString("TABLE_NAME");
        className = StringUtil.toProperClassName(tableName); // space allowed...
        // tableName = tableName.toUpperCase(); //If Oracle that need uppercase tablename. In MySQL
        // in Mac OS X (and probably Linux), it mustbe case sensitive
        // open table
        String sql = "select * from " + tableName;
        PreparedStatement pstmt =
            Db.getCon()
                .prepareStatement(sql, ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);
        ResultSet resultSet = pstmt.executeQuery();
        ResultSetMetaData metaColumn = resultSet.getMetaData();
        int nColoumn = metaColumn.getColumnCount();

        // get foreign keys,and stored it in hashtable
        ResultSet rsFk = meta.getImportedKeys(Db.getCon().getCatalog(), null, tableName);
        Hashtable hashFk = new Hashtable();
        System.out.println("FK Infos for table " + tableName);
        while (rsFk.next()) {
          String pkTableName = rsFk.getString("PKTABLE_NAME");
          String pkColumnName = rsFk.getString("PKCOLUMN_NAME");
          String fkColumnName = rsFk.getString("FKCOLUMN_NAME");

          int fkSequence = rsFk.getInt("KEY_SEQ");
          System.out.println(
              tableName + "." + fkColumnName + " => " + pkTableName + "." + pkColumnName);
          hashFk.put(fkColumnName, pkColumnName);
          hashFk.put(fkColumnName + "_table", pkTableName);
        }
        rsFk.close();

        // create form page
        System.out.println(
            "Creating form page for "
                + tableName
                + " from table + "
                + application.config.Database.DB
                + "."
                + tableName);
        fDir = new File("../../web/WEB-INF/views/" + tableName);
        if (!fDir.exists()) fDir.mkdir();
        File f = new File("../../web/WEB-INF/views/" + tableName + "/form_" + tableName + ".jsp");
        if (ignoreList.get("form_" + tableName + ".jsp") != null) {
          Logger.getLogger(GenerateForm.class.getName())
              .log(Level.INFO, "Ignoring creation of form_" + tableName + ".jsp");
        } else {
          Writer out = new FileWriter(f);
          out.write(
              "<%@ page contentType=\"text/html; charset=UTF-8\" language=\"java\" import=\"java.sql.*,recite18th.library.Db,application.config.Config,recite18th.library.Pagination\" %>");
          out.write("<%@ taglib uri=\"http://java.sun.com/jsp/jstl/core\" prefix=\"c\" %>\n");
          out.write("<%@ taglib uri=\"http://java.sun.com/jsp/jstl/functions\" prefix=\"fn\" %>\n");

          // create model for this class, use in detecting its PK Field
          cl = Class.forName("application.models." + className + "Model");
          model = (Model) cl.newInstance();

          // iterate all columns
          resultSet.beforeFirst();
          resultSet.next();
          out.write(
              "<table border=\"1\" align=\"center\" cellpadding=\"0\" cellspacing=\"0\" bordercolor=\"#E8EDFF\">\n");
          out.write("<tr>\n");
          out.write("<td>\n");
          out.write(
              "<form action=\"<%=Config.base_url%>index/"
                  + className
                  + "/save\" method=\"post\" enctype=\"multipart/form-data\">\n"); // I hope it's
          // okay to
          // default it to
          // multipart data
          out.write("<table id=\"hor-zebra\" summary=\"Form " + className + "\">\n");
          out.write("<thead>\n");
          out.write("<tr>\n");
          out.write("<th colspan=\"2\" class=\"odd\" scope=\"col\">Form " + className + " </th>\n");
          out.write("</tr>\n");
          out.write("</thead>\n");
          out.write("<tbody>\n");

          for (int i = 1; i <= nColoumn; i++) {
            String columnName = metaColumn.getColumnName(i);
            String dataType = metaColumn.getColumnClassName(i);
            out.write("<tr>\n");

            // if(!columnName.equals(model.getPkFieldName())) // implementing the case of PK not
            // AutoIncrement
            // if(!metaColumn.isAutoIncrement(i))
            // {
            // varying field input for type

            // foreign field, as chooser page view
            if (hashFk.get(columnName)
                != null) // TODO: what if PK is chooser also?? :) CUrrently I add it manually the
            // hidden_*Pk_nama* field
            {
              String fkTableName = hashFk.get(columnName + "_table") + "";
              String fkColumnName = hashFk.get(columnName) + "";
              String fkController = StringUtil.toProperClassName(fkTableName);

              out.write("<td>" + columnName + "</td>\n");
              out.write("<td>\n");
              out.write(
                  "<input name=\""
                      + columnName
                      + "\" type=\"hidden\" id=\""
                      + columnName
                      + "\" value=\"${model."
                      + columnName
                      + "}\"/>\n");
              out.write(
                  "<input name=\"label_"
                      + columnName
                      + "\" readonly=\"true\" type=\"text\" id=\"label_"
                      + columnName
                      + "\" value=\"${model."
                      + columnName
                      + "}\"/>\n"); // TODO : translate I
              out.write(
                  "<a href=\"<%=Config.base_url%>index/"
                      + fkController
                      + "/chooseView?height=220&width=700\" class=\"thickbox\">Pilih</a>");
              out.write("</td>\n");
            } else {

              // regular field input, not foreign key case
              if (!columnName.equals(model.getPkFieldName())) {
                out.write("<td>" + columnName + "</td>\n");
                out.write("<td>\n");

                // ENUM Column, displayed as HTML SELECT. May will only work for mysql only...
                Logger.getLogger(GenerateForm.class.getName())
                    .log(Level.INFO, columnName + " type is " + metaColumn.getColumnType(i));
                if (metaColumn.getColumnType(i) == 1) {
                  String enum_content[][] =
                      Db.getDataSet(
                          "SELECT SUBSTRING(COLUMN_TYPE,6,length(SUBSTRING(COLUMN_TYPE,6))-1) as enum_content "
                              + " FROM information_schema.COLUMNS "
                              + " WHERE TABLE_NAME='"
                              + tableName
                              + "' "
                              + " AND COLUMN_NAME='"
                              + columnName
                              + "'");
                  if (enum_content.length > 0) {
                    // Logger.getLogger(Model.class.getName()).log(Level.INFO, "Enum Content = " +
                    // enum_content[0][0]);
                    String enum_list[] = enum_content[0][0].split(",");
                    out.write("<select name=\"" + columnName + "\" id=\"" + columnName + "\">\n");
                    for (int ienum_list = 0; ienum_list < enum_list.length; ienum_list++)
                      out.write(
                          "\t<option <c:if test=\"${model."
                              + columnName
                              + "=='"
                              + enum_list[ienum_list].substring(
                                  1, enum_list[ienum_list].length() - 1)
                              + "'}\"> selected=\"selected\" </c:if> value=\""
                              + enum_list[ienum_list].substring(
                                  1, enum_list[ienum_list].length() - 1)
                              + "\">"
                              + enum_list[ienum_list].substring(
                                  1, enum_list[ienum_list].length() - 1)
                              + "</option>\n");
                    out.write("</select>\n\n");

                  } else {
                    // no enum content detected.. :)
                    out.write(
                        "<input name=\""
                            + columnName
                            + "\" type=\"text\" id=\""
                            + columnName
                            + "\" value=\"${model."
                            + columnName
                            + "}\"/>\n");
                  }
                } else if (metaColumn.getColumnType(i) == 91) {
                  out.write(
                      "<input name=\""
                          + columnName
                          + "\" type=\"text\" id=\""
                          + columnName
                          + "\" value=\"${model."
                          + columnName
                          + "}\"/>\n");
                  out.write("<script>\n");
                  out.write(
                      " if(!isValidDate($('#"
                          + columnName
                          + "').val())) $('#"
                          + columnName
                          + "').val('1980-1-1');\n"); // TODO: default value
                  out.write("  (function($){\n");

                  out.write("  $('#" + columnName + "').click(function() {\n");
                  out.write("    $('#" + columnName + "').DatePickerShow();\n");
                  out.write("  });\n");

                  out.write("  $('#" + columnName + "').DatePicker({\n");
                  out.write("    format:'Y-m-d',\n");
                  out.write("    date: $('#" + columnName + "').val(),\n");
                  out.write("    current: $('#" + columnName + "').val(),\n");
                  out.write("    starts: 1,\n");
                  out.write("    position: 'r',\n");

                  out.write("    onBeforeShow: function(){\n");
                  out.write(
                      "      $('#"
                          + columnName
                          + "').DatePickerSetDate($('#"
                          + columnName
                          + "').val(), true);\n");
                  out.write("    },\n");

                  out.write("    onChange: function(formated, dates){\n");
                  out.write("      $('#" + columnName + "').DatePickerHide();\n");
                  out.write("      $('#" + columnName + "').val(formated);\n");
                  out.write("    }\n");
                  out.write("  });\n");
                  out.write("  })(jQuery)\n");
                  out.write(" </script>\n");
                } else {
                  out.write(
                      "<input name=\""
                          + columnName
                          + "\" type=\"text\" id=\""
                          + columnName
                          + "\" value=\"${model."
                          + columnName
                          + "}\"/>\n");
                  out.write("${" + columnName + "_error}\n"); // regular input field
                }
              } else { // PK case
                if (metaColumn.isAutoIncrement(i)) {
                  out.write(
                      "<input name=\"hidden_"
                          + columnName
                          + "\" type=\"hidden\" id=\"hidden_"
                          + columnName
                          + "\" value=\"${model."
                          + columnName
                          + "}\"/>\n");
                } else {
                  out.write("<td>" + columnName + "</td>\n");
                  out.write("<td>\n");

                  out.write(
                      "<input name=\""
                          + columnName
                          + "\" type=\"text\" id=\""
                          + columnName
                          + "\" value=\"${model."
                          + columnName
                          + "}\"/>\n");
                  out.write("${" + columnName + "_error}\n");
                  out.write(
                      "<input name=\"hidden_"
                          + columnName
                          + "\" type=\"hidden\" id=\"hidden_"
                          + columnName
                          + "\" value=\"${model."
                          + columnName
                          + "}\"/>\n");
                }
              }
              out.write("</td>\n");
            }
            out.write("</tr>\n");
          }
          out.write("<tr class=\"odd\">\n");
          out.write("<td>&nbsp;</td>\n");
          out.write("<td><input type=\"submit\" name=\"Submit\" value=\"Simpan\">");
          out.write(
              "<input name=\"Button\" type=\"button\" id=\"Submit\" value=\"Batal\" onClick=\"javascript:history.back(-1);\"></td>\n");
          out.write("</tr>\n");
          out.write("</tbody>\n");
          out.write("</table>\n");
          out.write("</form></td>\n");
          out.write("</tr>\n");
          out.write("</table>\n");
          out.flush();
          out.close();
        }

        // create viewPage
        if (ignoreList.get("view_" + tableName + ".jsp") != null) {
          Logger.getLogger(GenerateForm.class.getName())
              .log(Level.INFO, "Ignoring creation of view_" + tableName + ".jsp");
        } else {
          System.out.println("Creating view page " + tableName);

          fDir = new File("../../web/WEB-INF/views/" + tableName);
          if (!fDir.exists()) fDir.mkdir();
          File fView =
              new File("../../web/WEB-INF/views/" + tableName + "/view_" + tableName + ".jsp");
          Writer outView = new FileWriter(fView);
          outView.write(
              "<%@ page contentType=\"text/html; charset=UTF-8\" language=\"java\" import=\"java.sql.*,recite18th.library.Db,application.config.Config,recite18th.library.Pagination\" %>");
          outView.write("<%@ taglib uri=\"http://java.sun.com/jsp/jstl/core\" prefix=\"c\" %>\n");
          outView.write(
              "<%@ taglib uri=\"http://java.sun.com/jsp/jstl/functions\" prefix=\"fn\" %>\n");
          outView.write("<% int pagenum = 0; %>\n");
          // outView.write("<%@ include file=\"/WEB-INF/views/header.jsp\" %>");
          outView.write(
              "<a href=\"<%=Config.base_url%>index/" + className + "/input/-1\">Tambah Data</a>\n");
          outView.write(
              "|| <a href=\"<%=Config.base_url%>index/" + className + "/print\">Cetak</a>\n");
          outView.write("<table width=\"100%\" id=\"rounded-corner\">\n");
          outView.write("<thead>\n");
          // iterate all columns : table header
          outView.write("  <tr>\n");
          outView.write("  <th scope=\"col\" class=\"rounded-company\">No.</th>\n");
          resultSet.beforeFirst();
          resultSet.next();

          // get Primary Key Field Name : often use
          String pkFieldName = "";
          try {
            Class params[] = null;
            Method objMethod = cl.getMethod("getPkFieldName", params);
            pkFieldName = "" + objMethod.invoke(model);
          } catch (Exception ex) {
            Logger.getLogger(Model.class.getName()).log(Level.SEVERE, null, ex);
          }

          // ALL Lower Case
          pkFieldName = pkFieldName.toLowerCase();

          // customize column view page
          for (int i = 1; i <= nColoumn; i++) {
            String columnName =
                metaColumn.getColumnName(i).toLowerCase(); // Caution : ALL LowerCase
            String dataType = metaColumn.getColumnClassName(i);
            String thClass = "rounded-q1";
            String thTitle = StringUtil.toProperFieldTitle(columnName);

            if (TableCustomization.getTable(tableName)
                != null) // there is customization for this table
            {
              if (TableCustomization.getTable(tableName).get(columnName) != null) {
                thTitle = TableCustomization.getTable(tableName).get(columnName) + "";
                outView.write(
                    "  <th scope=\"col\" class=\"" + thClass + "\">" + thTitle + "</th>\n");
              }
            } else { // standard view for this table : hide PK, because mostly is auto increment
              if (!metaColumn.isAutoIncrement(i))
                outView.write(
                    "  <th scope=\"col\" class=\"" + thClass + "\">" + thTitle + "</th>\n");
            }
          }

          outView.write("  <th scope=\"col\" class=\"rounded-q4\">Aksi</th>\n");
          outView.write("  </tr>\n");
          outView.write("</thead>\n");
          outView.write("<tfoot>\n");
          outView.write("  <tr>\n");
          outView.write(
              "    <td colspan=\""
                  + (nColoumn + 1)
                  + "\" class=\"rounded-foot-left\"><%=Pagination.createLinks(pagenum)%></td>\n");
          outView.write("    <td class=\"rounded-foot-right\">&nbsp;</td>\n");
          outView.write("  </tr>\n");
          outView.write("</tfoot>\n");

          outView.write("<tbody>\n");
          outView.write("  <c:forEach items=\"${row}\" var=\"item\" varStatus=\"status\" >\n");
          outView.write("    <tr>\n");
          outView.write("      <td>${status.count}</td>\n");

          // iterate all columns : table data
          resultSet.beforeFirst();
          resultSet.next();
          for (int i = 1; i <= nColoumn; i++) {
            String columnName = metaColumn.getColumnName(i);
            // if(!columnName.equals(pkFieldName)) //TOFIX : currently, PK Field is not shown
            if (TableCustomization.getTable(tableName) != null) {
              if (TableCustomization.getTable(tableName).get(columnName) != null) {
                outView.write("      <td>${item." + columnName + "}</td>\n");
              }
            } else {
              if (!metaColumn.isAutoIncrement(i))
                outView.write("      <td>${item." + columnName + "}</td>\n");
            }
          }

          outView.write("      <td>\n");
          outView.write(
              "         <a href=\"<%=Config.base_url%>index/"
                  + className
                  + "/input/${item."
                  + pkFieldName
                  + "}\">Ubah</a>\n");
          outView.write(
              "         <a href=\"<%=Config.base_url%>index/"
                  + className
                  + "/delete/${item."
                  + pkFieldName
                  + "}\" onClick=\"return confirm('Apakah Anda yakin?');\">Hapus</a>\n");
          outView.write("      </td>\n");

          outView.write("    </tr>\n");
          outView.write("  </c:forEach>\n");
          outView.write("</tbody>\n");
          outView.write("</table>\n");
          // outView.write("<%@ include file=\"/WEB-INF/views/footer.jsp\" %>");
          outView.flush();
          outView.close();
        }
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
  public void testMetaData() {

    String ddl0 =
        "DROP TABLE ADDRESSBOOK IF EXISTS; DROP TABLE ADDRESSBOOK_CATEGORY IF EXISTS; DROP TABLE USER IF EXISTS;";
    String ddl1 =
        "CREATE TABLE USER(USER_ID INTEGER NOT NULL PRIMARY KEY,LOGIN_ID VARCHAR(128) NOT NULL,USER_NAME VARCHAR(254) DEFAULT ' ' NOT NULL,CREATE_DATE TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,UPDATE_DATE TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,LAST_ACCESS_DATE TIMESTAMP,CONSTRAINT IXUQ_LOGIN_ID0 UNIQUE(LOGIN_ID))";
    String ddl2 =
        "CREATE TABLE ADDRESSBOOK_CATEGORY(USER_ID INTEGER NOT NULL,CATEGORY_ID INTEGER DEFAULT 0 NOT NULL,CATEGORY_NAME VARCHAR(60) DEFAULT '' NOT NULL,CONSTRAINT SYS_PK_ADDRESSBOOK_CATEGORY PRIMARY KEY(USER_ID,CATEGORY_ID),CONSTRAINT FK_ADRBKCAT1 FOREIGN KEY(USER_ID) REFERENCES USER(USER_ID) ON DELETE CASCADE)";
    String ddl3 =
        "CREATE TABLE ADDRESSBOOK(USER_ID INTEGER NOT NULL,ADDRESSBOOK_ID INTEGER NOT NULL,CATEGORY_ID INTEGER DEFAULT 0 NOT NULL,FIRST VARCHAR(64) DEFAULT '' NOT NULL,LAST VARCHAR(64) DEFAULT '' NOT NULL,NOTE VARCHAR(128) DEFAULT '' NOT NULL,CONSTRAINT SYS_PK_ADDRESSBOOK PRIMARY KEY(USER_ID,ADDRESSBOOK_ID),CONSTRAINT FK_ADRBOOK1 FOREIGN KEY(USER_ID,CATEGORY_ID) REFERENCES ADDRESSBOOK_CATEGORY(USER_ID,CATEGORY_ID) ON DELETE CASCADE)";
    String result1 = "1";
    String result2 = "2";
    String result3 = "3";
    String result4 = "4";
    String result5 = "5";

    try {
      stmnt.execute(ddl0);
      stmnt.execute(ddl1);
      stmnt.execute(ddl2);
      stmnt.execute(ddl3);

      DatabaseMetaData md = connection.getMetaData();

      {

        //                System.out.println(md.getDatabaseMajorVersion());
        //                System.out.println(md.getDatabaseMinorVersion());
        System.out.println(md.getDatabaseProductName());
        System.out.println(md.getDatabaseProductVersion());
        System.out.println(md.getDefaultTransactionIsolation());
        System.out.println(md.getDriverMajorVersion());
        System.out.println(md.getDriverMinorVersion());
        System.out.println(md.getDriverName());
        System.out.println(md.getDriverVersion());
        System.out.println(md.getExtraNameCharacters());
        System.out.println(md.getIdentifierQuoteString());

        //                System.out.println(md.getJDBCMajorVersion());
        //                System.out.println(md.getJDBCMinorVersion());
        System.out.println(md.getMaxBinaryLiteralLength());
        System.out.println(md.getMaxCatalogNameLength());
        System.out.println(md.getMaxColumnsInGroupBy());
        System.out.println(md.getMaxColumnsInIndex());
        System.out.println(md.getMaxColumnsInOrderBy());
        System.out.println(md.getMaxColumnsInSelect());
        System.out.println(md.getMaxColumnsInTable());
        System.out.println(md.getMaxConnections());
        System.out.println(md.getMaxCursorNameLength());
        System.out.println(md.getMaxIndexLength());
        System.out.println(md.getMaxProcedureNameLength());
        System.out.println(md.getMaxRowSize());
        System.out.println(md.getMaxSchemaNameLength());
        System.out.println(md.getMaxStatementLength());
        System.out.println(md.getMaxStatements());
        System.out.println(md.getMaxTableNameLength());
        System.out.println(md.getMaxUserNameLength());
        System.out.println(md.getNumericFunctions());
        System.out.println(md.getProcedureTerm());

        //                System.out.println(md.getResultSetHoldability());
        System.out.println(md.getSchemaTerm());
        System.out.println(md.getSearchStringEscape());
        System.out.println(md.getSQLKeywords());

        //                System.out.println(md.getSQLStateType());
        System.out.println(md.getStringFunctions());
        System.out.println(md.getSystemFunctions());
        System.out.println(md.getTimeDateFunctions());
        System.out.println(md.getURL());
        System.out.println(md.getUserName());
        System.out.println(md.importedKeyCascade);
        System.out.println(md.isCatalogAtStart());
        System.out.println(md.isReadOnly());

        ResultSet rs;

        rs = md.getPrimaryKeys(null, null, "USER");

        ResultSetMetaData rsmd = rs.getMetaData();
        String result0 = "";

        for (; rs.next(); ) {
          for (int i = 0; i < rsmd.getColumnCount(); i++) {
            result0 += rs.getString(i + 1) + ":";
          }

          result0 += "\n";
        }

        rs.close();
        System.out.println(result0);
      }

      {
        ResultSet rs;

        rs = md.getBestRowIdentifier(null, null, "USER", 0, true);

        ResultSetMetaData rsmd = rs.getMetaData();
        String result0 = "";

        for (; rs.next(); ) {
          for (int i = 0; i < rsmd.getColumnCount(); i++) {
            result0 += rs.getString(i + 1) + ":";
          }

          result0 += "\n";
        }

        rs.close();
        System.out.println(result0);
      }

      {
        ResultSet rs = md.getImportedKeys(null, null, "ADDRESSBOOK");
        ResultSetMetaData rsmd = rs.getMetaData();

        result1 = "";

        for (; rs.next(); ) {
          for (int i = 0; i < rsmd.getColumnCount(); i++) {
            result1 += rs.getString(i + 1) + ":";
          }

          result1 += "\n";
        }

        rs.close();
        System.out.println(result1);
      }

      {
        ResultSet rs =
            md.getCrossReference(null, null, "ADDRESSBOOK_CATEGORY", null, null, "ADDRESSBOOK");
        ResultSetMetaData rsmd = rs.getMetaData();

        result2 = "";

        for (; rs.next(); ) {
          for (int i = 0; i < rsmd.getColumnCount(); i++) {
            result2 += rs.getString(i + 1) + ":";
          }

          result2 += "\n";
        }

        rs.close();
        System.out.println(result2);
      }

      {
        ResultSet rs = md.getExportedKeys(null, null, "USER");
        ResultSetMetaData rsmd = rs.getMetaData();

        result3 = "";

        for (; rs.next(); ) {
          for (int i = 0; i < rsmd.getColumnCount(); i++) {
            result3 += rs.getString(i + 1) + ":";
          }

          result3 += "\n";
        }

        rs.close();
        System.out.println(result3);
      }

      {
        ResultSet rs = md.getCrossReference(null, null, "USER", null, null, "ADDRESSBOOK_CATEGORY");
        ResultSetMetaData rsmd = rs.getMetaData();

        result4 = "";

        for (; rs.next(); ) {
          for (int i = 0; i < rsmd.getColumnCount(); i++) {
            result4 += rs.getString(i + 1) + ":";
          }

          result4 += "\n";
        }

        rs.close();
        System.out.println(result4);
      }

      {
        stmnt.execute("DROP TABLE T IF EXISTS;");
        stmnt.executeQuery("CREATE TABLE T (I IDENTITY, A CHAR, B CHAR);");
        stmnt.executeQuery(
            "INSERT INTO T VALUES (NULL, 'get_column_name', '" + getColumnName + "');");

        ResultSet rs = stmnt.executeQuery("SELECT I, A, B, A \"aliasA\", B \"aliasB\" FROM T;");
        ResultSetMetaData rsmd = rs.getMetaData();

        result5 = "";

        for (; rs.next(); ) {
          for (int i = 0; i < rsmd.getColumnCount(); i++) {
            result5 += rsmd.getColumnName(i + 1) + ":" + rs.getString(i + 1) + ":";
          }

          result5 += "\n";
        }

        rs.close();

        rs = stmnt.executeQuery("SELECT I, A, B, A \"aliasA\", B \"aliasB\" FROM T;");
        ;
        rsmd = rs.getMetaData();

        for (; rs.next(); ) {
          for (int i = 0; i < rsmd.getColumnCount(); i++) {
            result5 += rsmd.getColumnLabel(i + 1) + ":" + rs.getString(i + 1) + ":";
          }

          result5 += "\n";
        }

        System.out.println(result5);
        System.out.println("first column identity: " + rsmd.isAutoIncrement(1));
        rsmd.isCaseSensitive(1);
        rsmd.isCurrency(1);
        rsmd.isDefinitelyWritable(1);
        rsmd.isNullable(1);
        rsmd.isReadOnly(1);
        rsmd.isSearchable(1);
        rsmd.isSigned(1);
        rsmd.isWritable(1);
        rs.close();

        // test identity with PreparedStatement
        pstmnt = connection.prepareStatement("INSERT INTO T VALUES (?,?,?)");

        pstmnt.setString(1, null);
        pstmnt.setString(2, "test");
        pstmnt.setString(3, "test2");
        pstmnt.executeUpdate();

        pstmnt = connection.prepareStatement("call identity()");

        ResultSet rsi = pstmnt.executeQuery();

        rsi.next();

        int identity = rsi.getInt(1);

        System.out.println("call identity(): " + identity);
        rsi.close();
      }
    } catch (SQLException e) {
      fail(e.getMessage());
    }

    System.out.println("testMetaData complete");

    // assert equality of exported and imported with xref
    assertEquals(result1, result2);
    assertEquals(result3, result4);
  }