Examples with DatabasePortObjectSpec org.knime.core.node.port.database.DatabasePortObjectSpec used on opensource projects

Example 6 with DatabasePortObjectSpec

use of org.knime.core.node.port.database.DatabasePortObjectSpec in project knime-core by knime.

the class DBSamplingNodeModel method createDbOutSpec.

/**
 * @param inSpec Spec of the input database object
 * @param exec The {@link ExecutionMonitor}
 * @param checkRetrieveMetadata true if the retrieveMetadataInConfigure settings should be respected,
 *            <code>false</code> if the metadata should be retrieved in any case (for execute)
 * @return Spec of the output database object
 * @throws InvalidSettingsException if the current settings are invalid
 * @throws CanceledExecutionException if execution is canceled
 */
private DatabasePortObjectSpec createDbOutSpec(final DatabasePortObjectSpec inSpec, final ExecutionMonitor exec, final boolean checkRetrieveMetadata) throws InvalidSettingsException, CanceledExecutionException {
    final DatabaseQueryConnectionSettings connectionSettings = inSpec.getConnectionSettings(getCredentialsProvider());
    final StatementManipulator statementManipulator = connectionSettings.getUtility().getStatementManipulator();
    try {
        // Connection connection = connectionSettings.createConnection(getCredentialsProvider());
        final String newQuery = connectionSettings.execute(getCredentialsProvider(), conn -> {
            return createQuery(conn, connectionSettings.getQuery(), statementManipulator, inSpec.getDataTableSpec(), exec);
        });
        DatabaseQueryConnectionSettings resultSettings = createDBQueryConnection(inSpec, newQuery);
        DatabaseQueryConnectionSettings querySettings = new DatabaseQueryConnectionSettings(resultSettings, newQuery);
        DatabaseReaderConnection conn = new DatabaseReaderConnection(querySettings);
        DataTableSpec tableSpec;
        exec.setMessage("Retrieving result specification.");
        tableSpec = conn.getDataTableSpec(getCredentialsProvider());
        return new DatabasePortObjectSpec(tableSpec, resultSettings.createConnectionModel());
    } catch (SQLException e1) {
        throw new InvalidSettingsException("Failure during query generation. Error: " + e1.getMessage(), e1);
    }
}

Example 7 with DatabasePortObjectSpec

use of org.knime.core.node.port.database.DatabasePortObjectSpec in project knime-core by knime.

the class DBSamplingNodeModel method configure.

/**
 * {@inheritDoc}
 */
@Override
protected PortObjectSpec[] configure(final PortObjectSpec[] inSpecs) throws InvalidSettingsException {
    if (m_stratified.getBooleanValue()) {
        final DatabasePortObjectSpec dbSpec = (DatabasePortObjectSpec) inSpecs[0];
        final DataTableSpec tableSpec = dbSpec.getDataTableSpec();
        if (!tableSpec.containsName(m_classColumnName.getStringValue())) {
            throw new InvalidSettingsException("Please choose a suitable column for stratified sampling.");
        }
    }
    return inSpecs;
}

Example 8 with DatabasePortObjectSpec

use of org.knime.core.node.port.database.DatabasePortObjectSpec in project knime-core by knime.

the class DBPivotNodeModel method createDbOutSpec.

/**
 * @param inSpec Spec of the input database object
 * @param exec The {@link ExecutionMonitor}
 * @return Spec of the output database object
 * @throws InvalidSettingsException if the current settings are invalid
 * @throws CanceledExecutionException if execution is canceled
 */
private DatabasePortObjectSpec createDbOutSpec(final DatabasePortObjectSpec inSpec, final ExecutionMonitor exec) throws InvalidSettingsException, CanceledExecutionException {
    DatabaseQueryConnectionSettings connectionSettings = inSpec.getConnectionSettings(getCredentialsProvider());
    final StatementManipulator statementManipulator = connectionSettings.getUtility().getStatementManipulator();
    try {
        // Connection connection = connectionSettings.createConnection(getCredentialsProvider());
        String newQuery = createQuery(connectionSettings, inSpec.getDataTableSpec(), exec);
        connectionSettings = createDBQueryConnection(inSpec, newQuery);
        DatabaseQueryConnectionSettings querySettings = new DatabaseQueryConnectionSettings(connectionSettings, newQuery);
        DBReader reader = querySettings.getUtility().getReader(querySettings);
        DataTableSpec tableSpec;
        exec.setMessage("Retrieving result specification.");
        tableSpec = reader.getDataTableSpec(getCredentialsProvider());
        return new DatabasePortObjectSpec(tableSpec, connectionSettings.createConnectionModel());
    } catch (SQLException e1) {
        throw new InvalidSettingsException("Failure during query generation. Error: " + e1.getMessage(), e1);
    }
}

Example 9 with DatabasePortObjectSpec

use of org.knime.core.node.port.database.DatabasePortObjectSpec in project knime-core by knime.

the class DBSorterNodeModel method execute.

/**
 * {@inheritDoc}
 */
@Override
protected final PortObject[] execute(final PortObject[] inData, final ExecutionContext exec) throws CanceledExecutionException, Exception {
    exec.setMessage("Retrieving metadata from database");
    DatabasePortObject dbObj = (DatabasePortObject) inData[0];
    DatabaseQueryConnectionSettings conn = dbObj.getConnectionSettings(getCredentialsProvider());
    String newQuery = createQuery(conn.getQuery(), conn.getUtility().getStatementManipulator());
    conn = createDBQueryConnection(dbObj.getSpec(), newQuery);
    DatabasePortObject outObj = new DatabasePortObject(new DatabasePortObjectSpec(dbObj.getSpec().getDataTableSpec(), conn.createConnectionModel()));
    return new PortObject[] { outObj };
}

Example 10 with DatabasePortObjectSpec

use of org.knime.core.node.port.database.DatabasePortObjectSpec in project knime-core by knime.

the class SQLInjectNodeModel method execute.

/**
 * {@inheritDoc}
 */
@Override
protected PortObject[] execute(final PortObject[] inData, final ExecutionContext exec) throws Exception {
    exec.setMessage("Retrieving metadata from database");
    final String varName = m_flowVariableName.getStringValue();
    if (varName == null) {
        throw new InvalidSettingsException("No flow variable for the SQL statement selected");
    }
    final String sql = peekFlowVariableString(varName);
    if (sql == null) {
        throw new InvalidSettingsException("The selected flow variable is not assigned");
    }
    DatabaseConnectionPortObject dbIn = (DatabaseConnectionPortObject) inData[0];
    DatabaseConnectionSettings inSettings = dbIn.getConnectionSettings(getCredentialsProvider());
    // Attach the SQL query
    DatabaseQueryConnectionSettings outSettings = new DatabaseQueryConnectionSettings(inSettings, sql);
    // Probe the database to see how the result table looks like
    DBReader load = outSettings.getUtility().getReader(outSettings);
    DataTableSpec tableSpec = load.getDataTableSpec(getCredentialsProvider());
    DatabasePortObjectSpec outSpec = new DatabasePortObjectSpec(tableSpec, outSettings.createConnectionModel());
    return new PortObject[] { new DatabasePortObject(outSpec) };
}