Examples with IntValue org.knime.core.data.IntValue used on opensource projects

Example 16 with IntValue

use of org.knime.core.data.IntValue in project knime-core by knime.

the class DatabaseWriterConnection method writeData.

/**
 * Create connection to write into database.
 * @param dbConn a database connection object
 * @param table name of table to write
 * @param input the data table as as row input
 * @param rowCount number of row of the table to write, -1 if unknown
 * @param appendData if checked the data is appended to an existing table
 * @param exec Used the cancel writing.
 * @param sqlTypes A mapping from column name to SQL-type.
 * @param cp {@link CredentialsProvider} providing user/password
 * @param batchSize number of rows written in one batch
 * @param insertNullForMissingCols <code>true</code> if <code>null</code> should be inserted for missing columns
 * @return error string or null, if non
 * @throws Exception if connection could not be established
 * @since 3.1
 */
public static final String writeData(final DatabaseConnectionSettings dbConn, final String table, final RowInput input, final long rowCount, final boolean appendData, final ExecutionMonitor exec, final Map<String, String> sqlTypes, final CredentialsProvider cp, final int batchSize, final boolean insertNullForMissingCols) throws Exception {
    // synchronized (dbConn.syncConnection(conn)) {
    return dbConn.execute(cp, conn -> {
        final StringBuilder columnNamesForInsertStatement = new StringBuilder("(");
        exec.setMessage("Start writing rows in database...");
        DataTableSpec spec = input.getDataTableSpec();
        // mapping from spec columns to database columns
        final int[] mapping;
        // append data to existing table
        if (appendData) {
            if (dbConn.getUtility().tableExists(conn, table)) {
                String query = dbConn.getUtility().getStatementManipulator().forMetadataOnly("SELECT * FROM " + table);
                try (ResultSet rs = conn.createStatement().executeQuery(query)) {
                    ResultSetMetaData rsmd = rs.getMetaData();
                    final Map<String, Integer> columnNames = new LinkedHashMap<String, Integer>();
                    for (int i = 0; i < spec.getNumColumns(); i++) {
                        String colName = replaceColumnName(spec.getColumnSpec(i).getName(), dbConn);
                        columnNames.put(colName.toLowerCase(), i);
                    }
                    // sanity check to lock if all input columns are in db
                    ArrayList<String> columnNotInSpec = new ArrayList<String>(columnNames.keySet());
                    for (int i = 0; i < rsmd.getColumnCount(); i++) {
                        String dbColName = replaceColumnName(rsmd.getColumnName(i + 1), dbConn);
                        if (columnNames.containsKey(dbColName.toLowerCase())) {
                            columnNotInSpec.remove(dbColName.toLowerCase());
                            columnNamesForInsertStatement.append(dbColName).append(',');
                        } else if (insertNullForMissingCols) {
                            // append the column name of a missing column only if the insert null for missing
                            // column option is enabled
                            columnNamesForInsertStatement.append(dbColName).append(',');
                        }
                    }
                    if (rsmd.getColumnCount() > 0) {
                        columnNamesForInsertStatement.deleteCharAt(columnNamesForInsertStatement.length() - 1);
                    }
                    columnNamesForInsertStatement.append(')');
                    if (columnNotInSpec.size() > 0) {
                        throw new RuntimeException("No. of columns in input" + " table > in database; not existing columns: " + columnNotInSpec.toString());
                    }
                    mapping = new int[rsmd.getColumnCount()];
                    for (int i = 0; i < mapping.length; i++) {
                        String name = replaceColumnName(rsmd.getColumnName(i + 1), dbConn).toLowerCase();
                        if (!columnNames.containsKey(name)) {
                            mapping[i] = -1;
                            continue;
                        }
                        mapping[i] = columnNames.get(name);
                        DataColumnSpec cspec = spec.getColumnSpec(mapping[i]);
                        int type = rsmd.getColumnType(i + 1);
                        switch(type) {
                            // check all boolean compatible types
                            case Types.BIT:
                            case Types.BOOLEAN:
                                // types must be compatible to BooleanValue
                                if (!cspec.getType().isCompatible(BooleanValue.class)) {
                                    throw new RuntimeException("Column \"" + name + "\" of type \"" + cspec.getType() + "\" from input does not match type " + "\"" + rsmd.getColumnTypeName(i + 1) + "\" in database at position " + i);
                                }
                                break;
                            // check all int compatible types
                            case Types.TINYINT:
                            case Types.SMALLINT:
                            case Types.INTEGER:
                                // types must be compatible to IntValue
                                if (!cspec.getType().isCompatible(IntValue.class)) {
                                    throw new RuntimeException("Column \"" + name + "\" of type \"" + cspec.getType() + "\" from input does not match type " + "\"" + rsmd.getColumnTypeName(i + 1) + "\" in database at position " + i);
                                }
                                break;
                            case Types.BIGINT:
                                // types must also be compatible to LongValue
                                if (!cspec.getType().isCompatible(LongValue.class)) {
                                    throw new RuntimeException("Column \"" + name + "\" of type \"" + cspec.getType() + "\" from input does not match type " + "\"" + rsmd.getColumnTypeName(i + 1) + "\" in database at position " + i);
                                }
                                break;
                            // check all double compatible types
                            case Types.FLOAT:
                            case Types.DOUBLE:
                            case Types.NUMERIC:
                            case Types.DECIMAL:
                            case Types.REAL:
                                // types must also be compatible to DoubleValue
                                if (!cspec.getType().isCompatible(DoubleValue.class)) {
                                    throw new RuntimeException("Column \"" + name + "\" of type \"" + cspec.getType() + "\" from input does not match type " + "\"" + rsmd.getColumnTypeName(i + 1) + "\" in database at position " + i);
                                }
                                break;
                            // check for date-and-time compatible types
                            case Types.DATE:
                            case Types.TIME:
                            case Types.TIMESTAMP:
                                // types must also be compatible to DataValue
                                if (!cspec.getType().isCompatible(DateAndTimeValue.class)) {
                                    throw new RuntimeException("Column \"" + name + "\" of type \"" + cspec.getType() + "\" from input does not match type " + "\"" + rsmd.getColumnTypeName(i + 1) + "\" in database at position " + i);
                                }
                                break;
                            // check for blob compatible types
                            case Types.BLOB:
                            case Types.BINARY:
                            case Types.LONGVARBINARY:
                                // types must also be compatible to DataValue
                                if (!cspec.getType().isCompatible(BinaryObjectDataValue.class)) {
                                    throw new RuntimeException("Column \"" + name + "\" of type \"" + cspec.getType() + "\" from input does not match type " + "\"" + rsmd.getColumnTypeName(i + 1) + "\" in database at position " + i);
                                }
                                break;
                        }
                    }
                }
            } else {
                LOGGER.info("Table \"" + table + "\" does not exist in database, " + "will create new table.");
                // and create new table
                final String query = "CREATE TABLE " + table + " " + createStmt(spec, sqlTypes, dbConn, columnNamesForInsertStatement);
                LOGGER.debug("Executing SQL statement as execute: " + query);
                Statement statement = conn.createStatement();
                statement.execute(query);
                mapping = new int[spec.getNumColumns()];
                for (int k = 0; k < mapping.length; k++) {
                    mapping[k] = k;
                }
            }
        } else {
            LOGGER.debug("Append not enabled. Table " + table + " will be dropped if exists.");
            mapping = new int[spec.getNumColumns()];
            for (int k = 0; k < mapping.length; k++) {
                mapping[k] = k;
            }
            Statement statement = null;
            try {
                statement = conn.createStatement();
                // remove existing table (if any)
                final String query = "DROP TABLE " + table;
                LOGGER.debug("Executing SQL statement as execute: " + query);
                statement.execute(query);
            } catch (Throwable t) {
                if (statement == null) {
                    throw new SQLException("Could not create SQL statement," + " reason: " + t.getMessage(), t);
                }
                LOGGER.info("Exception droping table \"" + table + "\": " + t.getMessage() + ". Will create new table.");
            } finally {
                if (!conn.getAutoCommit()) {
                    conn.commit();
                }
            }
            // and create new table
            final String query = "CREATE TABLE " + table + " " + createStmt(spec, sqlTypes, dbConn, columnNamesForInsertStatement);
            LOGGER.debug("Executing SQL statement as execute: " + query);
            statement.execute(query);
            statement.close();
        }
        // this is a (temporary) workaround for bug #5802: if there is a DataValue column in the input table
        // we need to use the SQL type for creating the insert statements.
        Map<Integer, Integer> columnTypes = null;
        for (DataColumnSpec cs : spec) {
            if (cs.getType().getPreferredValueClass() == DataValue.class) {
                columnTypes = getColumnTypes(conn, table);
                break;
            }
        }
        // creates the wild card string based on the number of columns
        // this string it used every time an new row is inserted into the db
        final StringBuilder wildcard = new StringBuilder("(");
        boolean first = true;
        for (int i = 0; i < mapping.length; i++) {
            if (mapping[i] >= 0 || insertNullForMissingCols) {
                // columns option is enabled
                if (first) {
                    first = false;
                } else {
                    wildcard.append(", ");
                }
                wildcard.append("?");
            }
        }
        wildcard.append(")");
        // problems writing more than 13 columns. the prepare statement
        // ensures that we can set the columns directly row-by-row, the
        // database will handle the commit
        long cnt = 1;
        long errorCnt = 0;
        long allErrors = 0;
        // count number of rows added to current batch
        int curBatchSize = 0;
        // create table meta data with empty column information
        final String query = "INSERT INTO " + table + " " + columnNamesForInsertStatement + " VALUES " + wildcard;
        LOGGER.debug("Executing SQL statement as prepareStatement: " + query);
        final PreparedStatement stmt = conn.prepareStatement(query);
        // remember auto-commit flag
        final boolean autoCommit = conn.getAutoCommit();
        DatabaseConnectionSettings.setAutoCommit(conn, false);
        try {
            final TimeZone timezone = dbConn.getTimeZone();
            // get the first row
            DataRow row;
            DataRow nextRow = input.poll();
            // iterate over all incoming data rows
            do {
                row = nextRow;
                cnt++;
                exec.checkCanceled();
                if (rowCount > 0) {
                    exec.setProgress(1.0 * cnt / rowCount, "Row " + "#" + cnt);
                } else {
                    exec.setProgress("Writing Row#" + cnt);
                }
                int dbIdx = 1;
                for (int i = 0; i < mapping.length; i++) {
                    if (mapping[i] < 0) {
                        if (insertNullForMissingCols) {
                            // insert only null if the insert null for missing col option is enabled
                            stmt.setNull(dbIdx++, Types.NULL);
                        }
                    } else {
                        final DataColumnSpec cspec = spec.getColumnSpec(mapping[i]);
                        final DataCell cell = row.getCell(mapping[i]);
                        fillStatement(stmt, dbIdx++, cspec, cell, timezone, columnTypes);
                    }
                }
                // if batch mode
                if (batchSize > 1) {
                    // a new row will be added
                    stmt.addBatch();
                }
                // get one more input row to check if 'row' is the last one
                nextRow = input.poll();
                curBatchSize++;
                // if batch size equals number of row in batch or input table at end
                if ((curBatchSize == batchSize) || nextRow == null) {
                    curBatchSize = 0;
                    try {
                        // write batch
                        if (batchSize > 1) {
                            stmt.executeBatch();
                        } else {
                            // or write single row
                            stmt.execute();
                        }
                    } catch (Throwable t) {
                        // anyway.
                        if (!conn.getAutoCommit()) {
                            conn.commit();
                        }
                        allErrors++;
                        if (errorCnt > -1) {
                            final String errorMsg;
                            if (batchSize > 1) {
                                errorMsg = "Error while adding rows #" + (cnt - batchSize) + " - #" + cnt + ", reason: " + t.getMessage();
                            } else {
                                errorMsg = "Error while adding row #" + cnt + " (" + row.getKey() + "), reason: " + t.getMessage();
                            }
                            exec.setMessage(errorMsg);
                            if (errorCnt++ < 10) {
                                LOGGER.warn(errorMsg);
                            } else {
                                errorCnt = -1;
                                LOGGER.warn(errorMsg + " - more errors...", t);
                            }
                        }
                    } finally {
                        // clear batch if in batch mode
                        if (batchSize > 1) {
                            stmt.clearBatch();
                        }
                    }
                }
            } while (nextRow != null);
            if (!conn.getAutoCommit()) {
                conn.commit();
            }
            if (allErrors == 0) {
                return null;
            } else {
                return "Errors \"" + allErrors + "\" writing " + (cnt - 1) + " rows.";
            }
        } finally {
            DatabaseConnectionSettings.setAutoCommit(conn, autoCommit);
            stmt.close();
        }
    });
}

Example 17 with IntValue

use of org.knime.core.data.IntValue in project knime-core by knime.

the class AverageInterpolationStatisticMB method consumeRow.

/**
 * {@inheritDoc}
 */
@Override
protected void consumeRow(final DataRow dataRow) {
    DataCell cell = dataRow.getCell(m_colIdx);
    if (cell.isMissing()) {
        m_numMissing++;
    } else {
        DataCell res;
        if (m_previous.isMissing()) {
            res = cell;
        } else {
            if (m_isDateColumn) {
                DateAndTimeValue val = (DateAndTimeValue) cell;
                DateAndTimeValue prevVal = (DateAndTimeValue) m_previous;
                boolean hasDate = val.hasDate() | prevVal.hasDate();
                boolean hasTime = val.hasTime() | prevVal.hasTime();
                boolean hasMilis = val.hasMillis() | prevVal.hasMillis();
                long prev = prevVal.getUTCTimeInMillis();
                long next = val.getUTCTimeInMillis();
                long lin = Math.round((prev + next) / 2);
                res = new DateAndTimeCell(lin, hasDate, hasTime, hasMilis);
            } else {
                DoubleValue val = (DoubleValue) cell;
                double prev = ((DoubleValue) m_previous).getDoubleValue();
                double next = val.getDoubleValue();
                double lin = (prev + next) / 2;
                if (m_previous instanceof IntValue) {
                    // get an int, create an int
                    res = new IntCell((int) Math.round(lin));
                } else if (m_previous instanceof LongValue) {
                    // get an long, create an long
                    res = new LongCell(Math.round(lin));
                } else {
                    res = new DoubleCell(lin);
                }
            }
        }
        for (int i = 0; i < m_numMissing; i++) {
            m_values.add(res);
        }
        m_previous = cell;
        m_numMissing = 0;
    }
}

Example 18 with IntValue

use of org.knime.core.data.IntValue in project knime-core by knime.

the class CategoryToNumberNodeDialogPane method loadSettingsFrom.

/**
 * {@inheritDoc}
 */
@Override
protected void loadSettingsFrom(final NodeSettingsRO settings, final PortObjectSpec[] specs) throws NotConfigurableException {
    DataTableSpec spec = (DataTableSpec) specs[0];
    m_settings.loadSettingsForDialog(settings, spec);
    DataColumnSpecFilterConfiguration config = m_settings.getFilterConfiguration();
    m_filterPanel.loadConfiguration(config, spec);
    m_appendColums.setSelected(m_settings.getAppendColumns());
    m_columnSuffix.setText(m_settings.getColumnSuffix());
    m_columnSuffix.setEnabled(m_appendColums.isSelected());
    m_startIndex.setValue(m_settings.getStartIndex());
    m_increment.setValue(m_settings.getIncrement());
    m_maxCategories.setValue(m_settings.getMaxCategories());
    if (!m_settings.getDefaultValue().isMissing()) {
        IntValue value = (IntValue) m_settings.getDefaultValue();
        m_defaultValue.setText(Integer.toString(value.getIntValue()));
    } else {
        m_defaultValue.setText("");
    }
    if (!m_settings.getMapMissingTo().isMissing()) {
        IntValue value = (IntValue) m_settings.getMapMissingTo();
        m_mapMissingTo.setText(Integer.toString(value.getIntValue()));
    } else {
        m_mapMissingTo.setText("");
    }
}

Example 19 with IntValue

use of org.knime.core.data.IntValue in project knime-core by knime.

the class NodeViewUtil method renderDataCell.

/**
 * @param cell the data cell to render
 * @param buffer write to this buffer
 */
public static void renderDataCell(final DataCell cell, final StringBuilder buffer) {
    if (cell.isMissing()) {
        buffer.append("<td></td>");
        return;
    }
    if (cell.getType().isCompatible(IntValue.class)) {
        IntValue value = (IntValue) cell;
        buffer.append("<td class=\"numeric\">");
        buffer.append(value.getIntValue());
        buffer.append("</td>");
    } else if (cell.getType().isCompatible(DoubleValue.class)) {
        DoubleValue value = (DoubleValue) cell;
        buffer.append("<td class=\"numeric\">");
        buffer.append(DoubleFormat.formatDouble(value.getDoubleValue()));
        buffer.append("</td>");
    } else if (cell.getType().isCompatible(StringValue.class)) {
        StringValue value = (StringValue) cell;
        buffer.append("<td class=\"left\">");
        buffer.append(value.getStringValue());
        buffer.append("</td>");
    } else {
        buffer.append("<td class=\"left\">");
        buffer.append(cell.toString());
        buffer.append("</td>");
    }
}