| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.commons.configuration2; |
| |
| import java.sql.Clob; |
| import java.sql.Connection; |
| import java.sql.PreparedStatement; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.sql.Statement; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import javax.sql.DataSource; |
| |
| import org.apache.commons.configuration2.convert.DisabledListDelimiterHandler; |
| import org.apache.commons.configuration2.convert.ListDelimiterHandler; |
| import org.apache.commons.configuration2.event.ConfigurationErrorEvent; |
| import org.apache.commons.configuration2.event.ConfigurationEvent; |
| import org.apache.commons.configuration2.event.EventType; |
| import org.apache.commons.configuration2.io.ConfigurationLogger; |
| import org.apache.commons.lang3.StringUtils; |
| |
| /** |
| * Configuration stored in a database. The properties are retrieved from a table containing at least one column for the |
| * keys, and one column for the values. It's possible to store several configurations in the same table by adding a |
| * column containing the name of the configuration. The name of the table and the columns have to be specified using the |
| * corresponding properties. |
| * <p> |
| * The recommended way to create an instance of {@code DatabaseConfiguration} is to use a <em>configuration |
| * builder</em>. The builder is configured with a special parameters object defining the database structures used by the |
| * configuration. Such an object can be created using the {@code database()} method of the {@code Parameters} class. See |
| * the examples below for more details. |
| * </p> |
| * |
| * <p> |
| * <strong>Example 1 - One configuration per table</strong> |
| * </p> |
| * |
| * <pre> |
| * CREATE TABLE myconfig ( |
| * `key` VARCHAR NOT NULL PRIMARY KEY, |
| * `value` VARCHAR |
| * ); |
| * |
| * INSERT INTO myconfig (key, value) VALUES ('foo', 'bar'); |
| * |
| * BasicConfigurationBuilder<DatabaseConfiguration> builder = |
| * new BasicConfigurationBuilder<DatabaseConfiguration>(DatabaseConfiguration.class); |
| * builder.configure( |
| * Parameters.database() |
| * .setDataSource(dataSource) |
| * .setTable("myconfig") |
| * .setKeyColumn("key") |
| * .setValueColumn("value") |
| * ); |
| * Configuration config = builder.getConfiguration(); |
| * String value = config.getString("foo"); |
| * </pre> |
| * |
| * <p> |
| * <strong>Example 2 - Multiple configurations per table</strong> |
| * </p> |
| * |
| * <pre> |
| * CREATE TABLE myconfigs ( |
| * `name` VARCHAR NOT NULL, |
| * `key` VARCHAR NOT NULL, |
| * `value` VARCHAR, |
| * CONSTRAINT sys_pk_myconfigs PRIMARY KEY (`name`, `key`) |
| * ); |
| * |
| * INSERT INTO myconfigs (name, key, value) VALUES ('config1', 'key1', 'value1'); |
| * INSERT INTO myconfigs (name, key, value) VALUES ('config2', 'key2', 'value2'); |
| * |
| * BasicConfigurationBuilder<DatabaseConfiguration> builder = |
| * new BasicConfigurationBuilder<DatabaseConfiguration>(DatabaseConfiguration.class); |
| * builder.configure( |
| * Parameters.database() |
| * .setDataSource(dataSource) |
| * .setTable("myconfigs") |
| * .setKeyColumn("key") |
| * .setValueColumn("value") |
| * .setConfigurationNameColumn("name") |
| * .setConfigurationName("config1") |
| * ); |
| * Configuration config1 = new DatabaseConfiguration(dataSource, "myconfigs", "name", "key", "value", "config1"); |
| * String value1 = conf.getString("key1"); |
| * </pre> |
| * |
| * The configuration can be instructed to perform commits after database updates. This is achieved by setting the |
| * {@code commits} parameter of the constructors to <b>true</b>. If commits should not be performed (which is the |
| * default behavior), it should be ensured that the connections returned by the {@code DataSource} are in auto-commit |
| * mode. |
| * <p> |
| * <strong>Note: Like JDBC itself, protection against SQL injection is left to the user.</strong> |
| * </p> |
| * |
| * @since 1.0 |
| */ |
| public class DatabaseConfiguration extends AbstractConfiguration { |
| /** |
| * An internally used helper class for simplifying database access through plain JDBC. This class provides a simple |
| * framework for creating and executing a JDBC statement. It especially takes care of proper handling of JDBC resources |
| * even in case of an error. |
| * |
| * @param <T> the type of the results produced by a JDBC operation |
| */ |
| private abstract class AbstractJdbcOperation<T> { |
| /** Stores the connection. */ |
| private Connection connection; |
| |
| /** Stores the statement. */ |
| private PreparedStatement preparedStatement; |
| |
| /** Stores the result set. */ |
| private ResultSet resultSet; |
| |
| /** The type of the event to send in case of an error. */ |
| private final EventType<? extends ConfigurationErrorEvent> errorEventType; |
| |
| /** The type of the operation which caused an error. */ |
| private final EventType<?> operationEventType; |
| |
| /** The property configurationName for an error event. */ |
| private final String errorPropertyName; |
| |
| /** The property value for an error event. */ |
| private final Object errorPropertyValue; |
| |
| /** |
| * Creates a new instance of {@code JdbcOperation} and initializes the properties related to the error event. |
| * |
| * @param errEvType the type of the error event |
| * @param opType the operation event type |
| * @param errPropName the property configurationName for the error event |
| * @param errPropVal the property value for the error event |
| */ |
| protected AbstractJdbcOperation(final EventType<? extends ConfigurationErrorEvent> errEvType, final EventType<?> opType, final String errPropName, |
| final Object errPropVal) { |
| errorEventType = errEvType; |
| operationEventType = opType; |
| errorPropertyName = errPropName; |
| errorPropertyValue = errPropVal; |
| } |
| |
| /** |
| * Creates a {@code PreparedStatement} object for executing the specified SQL statement. |
| * |
| * @param sql the statement to be executed |
| * @param nameCol a flag whether the configurationName column should be taken into account |
| * @return the prepared statement object |
| * @throws SQLException if an SQL error occurs |
| */ |
| protected PreparedStatement createStatement(final String sql, final boolean nameCol) throws SQLException { |
| final String statement; |
| if (nameCol && configurationNameColumn != null) { |
| final StringBuilder buf = new StringBuilder(sql); |
| buf.append(" AND ").append(configurationNameColumn).append("=?"); |
| statement = buf.toString(); |
| } else { |
| statement = sql; |
| } |
| |
| preparedStatement = getConnection().prepareStatement(statement); |
| return preparedStatement; |
| } |
| |
| /** |
| * Executes this operation. This method obtains a database connection and then delegates to {@code performOperation()}. |
| * Afterwards it performs the necessary clean up. Exceptions that are thrown during the JDBC operation are caught and |
| * transformed into configuration error events. |
| * |
| * @return the result of the operation |
| */ |
| public T execute() { |
| T result = null; |
| |
| if (getDataSource() != null) { |
| try { |
| connection = getDataSource().getConnection(); |
| result = performOperation(); |
| |
| if (isAutoCommit()) { |
| connection.commit(); |
| } |
| } catch (final SQLException e) { |
| fireError(errorEventType, operationEventType, errorPropertyName, errorPropertyValue, e); |
| } finally { |
| close(connection, preparedStatement, resultSet); |
| } |
| } |
| |
| return result; |
| } |
| |
| /** |
| * Gets the current connection. This method can be called while {@code execute()} is running. It returns <b>null</b> |
| * otherwise. |
| * |
| * @return the current connection |
| */ |
| protected Connection getConnection() { |
| return connection; |
| } |
| |
| /** |
| * Creates an initializes a {@code PreparedStatement} object for executing an SQL statement. This method first calls |
| * {@code createStatement()} for creating the statement and then initializes the statement's parameters. |
| * |
| * @param sql the statement to be executed |
| * @param nameCol a flag whether the configurationName column should be taken into account |
| * @param params the parameters for the statement |
| * @return the initialized statement object |
| * @throws SQLException if an SQL error occurs |
| */ |
| protected PreparedStatement initStatement(final String sql, final boolean nameCol, final Object... params) throws SQLException { |
| final PreparedStatement ps = createStatement(sql, nameCol); |
| |
| int idx = 1; |
| for (final Object param : params) { |
| ps.setObject(idx++, param); |
| } |
| if (nameCol && configurationNameColumn != null) { |
| ps.setString(idx, configurationName); |
| } |
| |
| return ps; |
| } |
| |
| /** |
| * Creates a {@code PreparedStatement} for a query, initializes it and executes it. The resulting {@code ResultSet} is |
| * returned. |
| * |
| * @param sql the statement to be executed |
| * @param nameCol a flag whether the configurationName column should be taken into account |
| * @param params the parameters for the statement |
| * @return the {@code ResultSet} produced by the query |
| * @throws SQLException if an SQL error occurs |
| */ |
| protected ResultSet openResultSet(final String sql, final boolean nameCol, final Object... params) throws SQLException { |
| return resultSet = initStatement(sql, nameCol, params).executeQuery(); |
| } |
| |
| /** |
| * Performs the JDBC operation. This method is called by {@code execute()} after this object has been fully initialized. |
| * Here the actual JDBC logic has to be placed. |
| * |
| * @return the result of the operation |
| * @throws SQLException if an SQL error occurs |
| */ |
| protected abstract T performOperation() throws SQLException; |
| } |
| |
| /** Constant for the statement used by getProperty. */ |
| private static final String SQL_GET_PROPERTY = "SELECT * FROM %s WHERE %s =?"; |
| |
| /** Constant for the statement used by isEmpty. */ |
| private static final String SQL_IS_EMPTY = "SELECT count(*) FROM %s WHERE 1 = 1"; |
| |
| /** Constant for the statement used by clearProperty. */ |
| private static final String SQL_CLEAR_PROPERTY = "DELETE FROM %s WHERE %s =?"; |
| |
| /** Constant for the statement used by clear. */ |
| private static final String SQL_CLEAR = "DELETE FROM %s WHERE 1 = 1"; |
| |
| /** Constant for the statement used by getKeys. */ |
| private static final String SQL_GET_KEYS = "SELECT DISTINCT %s FROM %s WHERE 1 = 1"; |
| |
| /** |
| * Converts a CLOB to a string. |
| * |
| * @param clob the CLOB to be converted |
| * @return the extracted string value |
| * @throws SQLException if an error occurs |
| */ |
| private static Object convertClob(final Clob clob) throws SQLException { |
| final int len = (int) clob.length(); |
| return len > 0 ? clob.getSubString(1, len) : StringUtils.EMPTY; |
| } |
| |
| /** The data source to connect to the database. */ |
| private DataSource dataSource; |
| |
| /** The configurationName of the table containing the configurations. */ |
| private String table; |
| |
| /** The column containing the configurationName of the configuration. */ |
| private String configurationNameColumn; |
| |
| /** The column containing the keys. */ |
| private String keyColumn; |
| |
| /** The column containing the values. */ |
| private String valueColumn; |
| |
| /** The configurationName of the configuration. */ |
| private String configurationName; |
| |
| /** A flag whether commits should be performed by this configuration. */ |
| private boolean autoCommit; |
| |
| /** |
| * Creates a new instance of {@code DatabaseConfiguration}. |
| */ |
| public DatabaseConfiguration() { |
| initLogger(new ConfigurationLogger(DatabaseConfiguration.class)); |
| addErrorLogListener(); |
| } |
| |
| /** |
| * Adds a property to this configuration. If this causes a database error, an error event will be generated of type |
| * {@code ADD_PROPERTY} with the causing exception. The event's {@code propertyName} is set to the passed in property |
| * key, the {@code propertyValue} points to the passed in value. |
| * |
| * @param key the property key |
| * @param obj the value of the property to add |
| */ |
| @Override |
| protected void addPropertyDirect(final String key, final Object obj) { |
| new AbstractJdbcOperation<Void>(ConfigurationErrorEvent.WRITE, ConfigurationEvent.ADD_PROPERTY, key, obj) { |
| @Override |
| protected Void performOperation() throws SQLException { |
| final StringBuilder query = new StringBuilder("INSERT INTO "); |
| query.append(table).append(" ("); |
| query.append(keyColumn).append(", "); |
| query.append(valueColumn); |
| if (configurationNameColumn != null) { |
| query.append(", ").append(configurationNameColumn); |
| } |
| query.append(") VALUES (?, ?"); |
| if (configurationNameColumn != null) { |
| query.append(", ?"); |
| } |
| query.append(")"); |
| |
| try (PreparedStatement pstmt = initStatement(query.toString(), false, key, String.valueOf(obj))) { |
| if (configurationNameColumn != null) { |
| pstmt.setString(3, configurationName); |
| } |
| |
| pstmt.executeUpdate(); |
| return null; |
| } |
| } |
| }.execute(); |
| } |
| |
| /** |
| * Adds a property to this configuration. This implementation temporarily disables list delimiter parsing, so that even |
| * if the value contains the list delimiter, only a single record is written into the managed table. The implementation |
| * of {@code getProperty()} takes care about delimiters. So list delimiters are fully supported by |
| * {@code DatabaseConfiguration}, but internally treated a bit differently. |
| * |
| * @param key the key of the new property |
| * @param value the value to be added |
| */ |
| @Override |
| protected void addPropertyInternal(final String key, final Object value) { |
| final ListDelimiterHandler oldHandler = getListDelimiterHandler(); |
| try { |
| // temporarily disable delimiter parsing |
| setListDelimiterHandler(DisabledListDelimiterHandler.INSTANCE); |
| super.addPropertyInternal(key, value); |
| } finally { |
| setListDelimiterHandler(oldHandler); |
| } |
| } |
| |
| /** |
| * Removes all entries from this configuration. If this causes a database error, an error event will be generated of |
| * type {@code CLEAR} with the causing exception. Both the event's {@code propertyName} and the {@code propertyValue} |
| * will be undefined. |
| */ |
| @Override |
| protected void clearInternal() { |
| new AbstractJdbcOperation<Void>(ConfigurationErrorEvent.WRITE, ConfigurationEvent.CLEAR, null, null) { |
| @Override |
| protected Void performOperation() throws SQLException { |
| try (PreparedStatement statement = initStatement(String.format(SQL_CLEAR, table), true)) { |
| statement.executeUpdate(); |
| } |
| return null; |
| } |
| }.execute(); |
| } |
| |
| /** |
| * Removes the specified value from this configuration. If this causes a database error, an error event will be |
| * generated of type {@code CLEAR_PROPERTY} with the causing exception. The event's {@code propertyName} will be set to |
| * the passed in key, the {@code propertyValue} will be undefined. |
| * |
| * @param key the key of the property to be removed |
| */ |
| @Override |
| protected void clearPropertyDirect(final String key) { |
| new AbstractJdbcOperation<Void>(ConfigurationErrorEvent.WRITE, ConfigurationEvent.CLEAR_PROPERTY, key, null) { |
| @Override |
| protected Void performOperation() throws SQLException { |
| try (PreparedStatement ps = initStatement(String.format(SQL_CLEAR_PROPERTY, table, keyColumn), true, key)) { |
| ps.executeUpdate(); |
| return null; |
| } |
| } |
| }.execute(); |
| } |
| |
| /** |
| * Close the specified database objects. Avoid closing if null and hide any SQLExceptions that occur. |
| * |
| * @param conn The database connection to close |
| * @param stmt The statement to close |
| * @param rs the result set to close |
| */ |
| protected void close(final Connection conn, final Statement stmt, final ResultSet rs) { |
| try { |
| if (rs != null) { |
| rs.close(); |
| } |
| } catch (final SQLException e) { |
| getLogger().error("An error occurred on closing the result set", e); |
| } |
| |
| try { |
| if (stmt != null) { |
| stmt.close(); |
| } |
| } catch (final SQLException e) { |
| getLogger().error("An error occurred on closing the statement", e); |
| } |
| |
| try { |
| if (conn != null) { |
| conn.close(); |
| } |
| } catch (final SQLException e) { |
| getLogger().error("An error occurred on closing the connection", e); |
| } |
| } |
| |
| /** |
| * Checks whether this configuration contains the specified key. If this causes a database error, an error event will be |
| * generated of type {@code READ} with the causing exception. The event's {@code propertyName} will be set to the passed |
| * in key, the {@code propertyValue} will be undefined. |
| * |
| * @param key the key to be checked |
| * @return a flag whether this key is defined |
| */ |
| @Override |
| protected boolean containsKeyInternal(final String key) { |
| final AbstractJdbcOperation<Boolean> op = new AbstractJdbcOperation<Boolean>(ConfigurationErrorEvent.READ, ConfigurationErrorEvent.READ, key, null) { |
| @Override |
| protected Boolean performOperation() throws SQLException { |
| try (ResultSet rs = openResultSet(String.format(SQL_GET_PROPERTY, table, keyColumn), true, key)) { |
| return rs.next(); |
| } |
| } |
| }; |
| |
| final Boolean result = op.execute(); |
| return result != null && result.booleanValue(); |
| } |
| |
| /** |
| * Tests whether this configuration contains one or more matches to this value. This operation stops at first |
| * match but may be more expensive than the containsKey method. |
| * @since 2.11.0 |
| */ |
| @Override |
| protected boolean containsValueInternal(final String value) { |
| final AbstractJdbcOperation<Boolean> op = new AbstractJdbcOperation<Boolean>(ConfigurationErrorEvent.READ, ConfigurationErrorEvent.READ, value, null) { |
| @Override |
| protected Boolean performOperation() throws SQLException { |
| try (ResultSet rs = openResultSet(String.format(SQL_GET_PROPERTY, table, valueColumn), false, value)) { |
| return rs.next(); |
| } |
| } |
| }; |
| final Boolean result = op.execute(); |
| return result != null && result.booleanValue(); |
| } |
| |
| /** |
| * Extracts the value of a property from the given result set. The passed in {@code ResultSet} was created by a SELECT |
| * statement on the underlying database table. This implementation reads the value of the column determined by the |
| * {@code valueColumn} property. Normally the contained value is directly returned. However, if it is of type |
| * {@code CLOB}, text is extracted as string. |
| * |
| * @param rs the current {@code ResultSet} |
| * @return the value of the property column |
| * @throws SQLException if an error occurs |
| */ |
| protected Object extractPropertyValue(final ResultSet rs) throws SQLException { |
| Object value = rs.getObject(valueColumn); |
| if (value instanceof Clob) { |
| value = convertClob((Clob) value); |
| } |
| return value; |
| } |
| |
| /** |
| * Gets the name of this configuration instance. |
| * |
| * @return the name of this configuration |
| */ |
| public String getConfigurationName() { |
| return configurationName; |
| } |
| |
| /** |
| * Gets the name of the table column with the configuration name. |
| * |
| * @return the name of the configuration name column |
| */ |
| public String getConfigurationNameColumn() { |
| return configurationNameColumn; |
| } |
| |
| /** |
| * Gets the used {@code DataSource} object. |
| * |
| * @return the data source |
| * @since 1.4 |
| * @deprecated Use {@link #getDataSource()} |
| */ |
| @Deprecated |
| public DataSource getDatasource() { |
| return dataSource; |
| } |
| |
| /** |
| * Gets the {@code DataSource} for obtaining database connections. |
| * |
| * @return the {@code DataSource} |
| */ |
| public DataSource getDataSource() { |
| return dataSource; |
| } |
| |
| /** |
| * Gets the name of the column containing the configuration keys. |
| * |
| * @return the name of the key column |
| */ |
| public String getKeyColumn() { |
| return keyColumn; |
| } |
| |
| /** |
| * Returns an iterator with the names of all properties contained in this configuration. If this causes a database |
| * error, an error event will be generated of type {@code READ} with the causing exception. Both the event's |
| * {@code propertyName} and the {@code propertyValue} will be undefined. |
| * |
| * @return an iterator with the contained keys (an empty iterator in case of an error) |
| */ |
| @Override |
| protected Iterator<String> getKeysInternal() { |
| final Collection<String> keys = new ArrayList<>(); |
| new AbstractJdbcOperation<Collection<String>>(ConfigurationErrorEvent.READ, ConfigurationErrorEvent.READ, null, null) { |
| @Override |
| protected Collection<String> performOperation() throws SQLException { |
| try (ResultSet rs = openResultSet(String.format(SQL_GET_KEYS, keyColumn, table), true)) { |
| while (rs.next()) { |
| keys.add(rs.getString(1)); |
| } |
| return keys; |
| } |
| } |
| }.execute(); |
| |
| return keys.iterator(); |
| } |
| |
| /** |
| * Gets the value of the specified property. If this causes a database error, an error event will be generated of |
| * type {@code READ} with the causing exception. The event's {@code propertyName} is set to the passed in property key, |
| * the {@code propertyValue} is undefined. |
| * |
| * @param key the key of the desired property |
| * @return the value of this property |
| */ |
| @Override |
| protected Object getPropertyInternal(final String key) { |
| final AbstractJdbcOperation<Object> op = new AbstractJdbcOperation<Object>(ConfigurationErrorEvent.READ, ConfigurationErrorEvent.READ, key, null) { |
| @Override |
| protected Object performOperation() throws SQLException { |
| final List<Object> results = new ArrayList<>(); |
| try (ResultSet rs = openResultSet(String.format(SQL_GET_PROPERTY, table, keyColumn), true, key)) { |
| while (rs.next()) { |
| // Split value if it contains the list delimiter |
| getListDelimiterHandler().parse(extractPropertyValue(rs)).forEach(results::add); |
| } |
| } |
| if (!results.isEmpty()) { |
| return results.size() > 1 ? results : results.get(0); |
| } |
| return null; |
| } |
| }; |
| |
| return op.execute(); |
| } |
| |
| /** |
| * Gets the name of the table containing configuration data. |
| * |
| * @return the name of the table to be queried |
| */ |
| public String getTable() { |
| return table; |
| } |
| |
| /** |
| * Gets the name of the column containing the configuration values. |
| * |
| * @return the name of the value column |
| */ |
| public String getValueColumn() { |
| return valueColumn; |
| } |
| |
| /** |
| * Returns a flag whether this configuration performs commits after database updates. |
| * |
| * @return a flag whether commits are performed |
| */ |
| public boolean isAutoCommit() { |
| return autoCommit; |
| } |
| |
| /** |
| * Checks if this configuration is empty. If this causes a database error, an error event will be generated of type |
| * {@code READ} with the causing exception. Both the event's {@code propertyName} and {@code propertyValue} will be |
| * undefined. |
| * |
| * @return a flag whether this configuration is empty. |
| */ |
| @Override |
| protected boolean isEmptyInternal() { |
| final AbstractJdbcOperation<Integer> op = new AbstractJdbcOperation<Integer>(ConfigurationErrorEvent.READ, ConfigurationErrorEvent.READ, null, null) { |
| @Override |
| protected Integer performOperation() throws SQLException { |
| try (ResultSet rs = openResultSet(String.format(SQL_IS_EMPTY, table), true)) { |
| return rs.next() ? Integer.valueOf(rs.getInt(1)) : null; |
| } |
| } |
| }; |
| |
| final Integer count = op.execute(); |
| return count == null || count.intValue() == 0; |
| } |
| |
| /** |
| * Sets the auto commit flag. If set to <b>true</b>, this configuration performs a commit after each database update. |
| * |
| * @param autoCommit the auto commit flag |
| */ |
| public void setAutoCommit(final boolean autoCommit) { |
| this.autoCommit = autoCommit; |
| } |
| |
| /** |
| * Sets the name of this configuration instance. |
| * |
| * @param configurationName the name of this configuration |
| */ |
| public void setConfigurationName(final String configurationName) { |
| this.configurationName = configurationName; |
| } |
| |
| /** |
| * Sets the name of the table column with the configuration name. |
| * |
| * @param configurationNameColumn the name of the column with the configuration name |
| */ |
| public void setConfigurationNameColumn(final String configurationNameColumn) { |
| this.configurationNameColumn = configurationNameColumn; |
| } |
| |
| /** |
| * Sets the {@code DataSource} for obtaining database connections. |
| * |
| * @param dataSource the {@code DataSource} |
| */ |
| public void setDataSource(final DataSource dataSource) { |
| this.dataSource = dataSource; |
| } |
| |
| /** |
| * Sets the name of the column containing the configuration keys. |
| * |
| * @param keyColumn the name of the key column |
| */ |
| public void setKeyColumn(final String keyColumn) { |
| this.keyColumn = keyColumn; |
| } |
| |
| /** |
| * Sets the name of the table containing configuration data. |
| * |
| * @param table the table name |
| */ |
| public void setTable(final String table) { |
| this.table = table; |
| } |
| |
| /** |
| * Sets the name of the column containing the configuration values. |
| * |
| * @param valueColumn the name of the value column |
| */ |
| public void setValueColumn(final String valueColumn) { |
| this.valueColumn = valueColumn; |
| } |
| } |