/** * Creates a statement to delete all snapshots of the aggregate with given {@code aggregateIdentifier}. * * @param connection The connection to the database. * @param aggregateIdentifier The identifier of the aggregate whose snapshots to delete. * @return A {@link PreparedStatement} that deletes all the aggregate's snapshots when executed. * * @throws SQLException when an exception occurs while creating the prepared statement. */ protected PreparedStatement deleteSnapshots(Connection connection, String aggregateIdentifier, long sequenceNumber) throws SQLException { PreparedStatement preparedStatement = connection.prepareStatement( "DELETE FROM " + schema.snapshotTable() + " WHERE " + schema.aggregateIdentifierColumn() + " = ? " + "AND " + schema.sequenceNumberColumn() + " < ?" ); preparedStatement.setString(1, aggregateIdentifier); preparedStatement.setLong(2, sequenceNumber); return preparedStatement; }
/** * Creates a statement to read domain event entries for an aggregate with given identifier starting with the first * entry having a sequence number that is equal or larger than the given {@code firstSequenceNumber}. * * @param connection The connection to the database. * @param identifier The identifier of the aggregate. * @param firstSequenceNumber The expected sequence number of the first returned entry. * @param batchSize The number of items to include in the batch * @return A {@link PreparedStatement} that returns event entries for the given query when executed. * * @throws SQLException when an exception occurs while creating the prepared statement. */ protected PreparedStatement readEventData(Connection connection, String identifier, long firstSequenceNumber, int batchSize) throws SQLException { Transaction tx = transactionManager.startTransaction(); try { final String sql = "SELECT " + trackedEventFields() + " FROM " + schema.domainEventTable() + " WHERE " + schema.aggregateIdentifierColumn() + " = ? AND " + schema.sequenceNumberColumn() + " >= ? AND " + schema.sequenceNumberColumn() + " < ? ORDER BY " + schema.sequenceNumberColumn() + " ASC"; PreparedStatement preparedStatement = connection.prepareStatement(sql); preparedStatement.setString(1, identifier); preparedStatement.setLong(2, firstSequenceNumber); preparedStatement.setLong(3, firstSequenceNumber + batchSize); return preparedStatement; } finally { tx.commit(); } }
/** * Creates a statement to read the snapshot entry of an aggregate with given identifier. * * @param connection The connection to the database. * @param identifier The aggregate identifier. * @return A {@link PreparedStatement} that returns the last snapshot entry of the aggregate (if any) when executed. * * @throws SQLException when an exception occurs while creating the prepared statement. */ protected PreparedStatement readSnapshotData(Connection connection, String identifier) throws SQLException { final String s = "SELECT " + domainEventFields() + " FROM " + schema.snapshotTable() + " WHERE " + schema.aggregateIdentifierColumn() + " = ? ORDER BY " + schema.sequenceNumberColumn() + " DESC"; PreparedStatement statement = connection.prepareStatement(s); statement.setString(1, identifier); return statement; }
@Override public Optional<Long> lastSequenceNumberFor(String aggregateIdentifier) { String sql = "SELECT max(" + schema.sequenceNumberColumn() + ") FROM " + schema.domainEventTable() + " WHERE " + schema.aggregateIdentifierColumn() + " = ?"; return Optional.ofNullable(transactionManager.fetchInTransaction( () -> executeQuery(getConnection(), connection -> { PreparedStatement stmt = connection.prepareStatement(sql); stmt.setString(1, aggregateIdentifier); return stmt; }, resultSet -> nextAndExtract(resultSet, 1, Long.class), e -> new EventStoreException( format("Failed to read events for aggregate [%s]", aggregateIdentifier), e ) ))); }
/** * Extracts the next domain event entry from the given {@code resultSet}. * * @param resultSet The results of a query for domain events of an aggregate. * @return The next domain event. * * @throws SQLException when an exception occurs while creating the event data. */ protected DomainEventData<?> getDomainEventData(ResultSet resultSet) throws SQLException { return new GenericDomainEventEntry<>(resultSet.getString(schema.typeColumn()), resultSet.getString(schema.aggregateIdentifierColumn()), resultSet.getLong(schema.sequenceNumberColumn()), resultSet.getString(schema.eventIdentifierColumn()), readTimeStamp(resultSet, schema.timestampColumn()), resultSet.getString(schema.payloadTypeColumn()), resultSet.getString(schema.payloadRevisionColumn()), readPayload(resultSet, schema.payloadColumn()), readPayload(resultSet, schema.metaDataColumn())); }
/** * Extracts the next snapshot entry from the given {@code resultSet}. * * @param resultSet The results of a query for a snapshot of an aggregate. * @return The next snapshot data. * * @throws SQLException when an exception occurs while creating the event data. */ protected DomainEventData<?> getSnapshotData(ResultSet resultSet) throws SQLException { return new GenericDomainEventEntry<>(resultSet.getString(schema.typeColumn()), resultSet.getString(schema.aggregateIdentifierColumn()), resultSet.getLong(schema.sequenceNumberColumn()), resultSet.getString(schema.eventIdentifierColumn()), readTimeStamp(resultSet, schema.timestampColumn()), resultSet.getString(schema.payloadTypeColumn()), resultSet.getString(schema.payloadRevisionColumn()), readPayload(resultSet, schema.payloadColumn()), readPayload(resultSet, schema.metaDataColumn())); }
/** * Returns a comma separated list of domain event column names to select from an event or snapshot entry. * * @return comma separated domain event column names. */ protected String domainEventFields() { return String.join(", ", schema.eventIdentifierColumn(), schema.timestampColumn(), schema.payloadTypeColumn(), schema.payloadRevisionColumn(), schema.payloadColumn(), schema.metaDataColumn(), schema.typeColumn(), schema.aggregateIdentifierColumn(), schema.sequenceNumberColumn()); }
resultSet.getString(schema.typeColumn()), resultSet.getString(schema.aggregateIdentifierColumn()), resultSet.getLong(schema.sequenceNumberColumn()), resultSet.getString(schema.eventIdentifierColumn()), readTimeStamp(resultSet, schema.timestampColumn()),
@Override public PreparedStatement createSnapshotEventTable(Connection connection, EventSchema schema) throws SQLException { String sql = "CREATE TABLE " + schema.snapshotTable() + " (\n" + schema.aggregateIdentifierColumn() + " VARCHAR(255) NOT NULL,\n" + schema.sequenceNumberColumn() + " NUMBER(19) NOT NULL,\n" + schema.typeColumn() + " VARCHAR(255) NOT NULL,\n" + schema.eventIdentifierColumn() + " VARCHAR(255) NOT NULL,\n" + schema.metaDataColumn() + " " + payloadType() + ",\n" + schema.payloadColumn() + " " + payloadType() + " NOT NULL,\n" + schema.payloadRevisionColumn() + " VARCHAR(255),\n" + schema.payloadTypeColumn() + " VARCHAR(255) NOT NULL,\n" + schema.timestampColumn() + " VARCHAR(255) NOT NULL,\n" + "PRIMARY KEY (" + schema.aggregateIdentifierColumn() + ", " + schema.sequenceNumberColumn() + "),\n" + "UNIQUE (" + schema.eventIdentifierColumn() + ")\n" + ")"; return connection.prepareStatement(sql); }
@Override public PreparedStatement createSnapshotEventTable(Connection connection, EventSchema schema) throws SQLException { String sql = "CREATE TABLE IF NOT EXISTS " + schema.snapshotTable() + " (\n" + schema.aggregateIdentifierColumn() + " VARCHAR(255) NOT NULL,\n" + schema.sequenceNumberColumn() + " BIGINT NOT NULL,\n" + schema.typeColumn() + " VARCHAR(255) NOT NULL,\n" + schema.eventIdentifierColumn() + " VARCHAR(255) NOT NULL,\n" + schema.metaDataColumn() + " " + payloadType() + ",\n" + schema.payloadColumn() + " " + payloadType() + " NOT NULL,\n" + schema.payloadRevisionColumn() + " VARCHAR(255),\n" + schema.payloadTypeColumn() + " VARCHAR(255) NOT NULL,\n" + schema.timestampColumn() + " VARCHAR(255) NOT NULL,\n" + "PRIMARY KEY (" + schema.aggregateIdentifierColumn() + ", " + schema.sequenceNumberColumn() + "),\n" + "UNIQUE (" + schema.eventIdentifierColumn() + ")\n" + ")"; return connection.prepareStatement(sql); }
final String sql = "INSERT INTO " + table + " (" + String.join(", ", schema.eventIdentifierColumn(), schema.aggregateIdentifierColumn(), schema.sequenceNumberColumn(), schema.typeColumn(), schema.timestampColumn(), schema.payloadTypeColumn(), schema.payloadRevisionColumn(), schema.payloadColumn(), schema.metaDataColumn()) + ") VALUES (?,?,?,?,?,?,?,?,?)";
final String sql = "INSERT INTO " + schema.snapshotTable() + " (" + String.join(", ", schema.eventIdentifierColumn(), schema.aggregateIdentifierColumn(), schema.sequenceNumberColumn(), schema.typeColumn(), schema.timestampColumn(), schema.payloadTypeColumn(), schema.payloadRevisionColumn(), schema.payloadColumn(), schema.metaDataColumn()) + ") VALUES (?,?,?,?,?,?,?,?,?)";
@Override public PreparedStatement createDomainEventTable(Connection connection, EventSchema schema) throws SQLException { String sql = "CREATE TABLE IF NOT EXISTS " + schema.domainEventTable() + " (\n" + schema.globalIndexColumn() + " " + idColumnType() + " NOT NULL,\n" + schema.aggregateIdentifierColumn() + " VARCHAR(255) NOT NULL,\n" + schema.sequenceNumberColumn() + " BIGINT NOT NULL,\n" + schema.typeColumn() + " VARCHAR(255),\n" + schema.eventIdentifierColumn() + " VARCHAR(255) NOT NULL,\n" + schema.metaDataColumn() + " " + payloadType() + ",\n" + schema.payloadColumn() + " " + payloadType() + " NOT NULL,\n" + schema.payloadRevisionColumn() + " VARCHAR(255),\n" + schema.payloadTypeColumn() + " VARCHAR(255) NOT NULL,\n" + schema.timestampColumn() + " VARCHAR(255) NOT NULL,\n" + "PRIMARY KEY (" + schema.globalIndexColumn() + "),\n" + "UNIQUE (" + schema.aggregateIdentifierColumn() + ", " + schema.sequenceNumberColumn() + "),\n" + "UNIQUE (" + schema.eventIdentifierColumn() + ")\n" + ")"; return connection.prepareStatement(sql); }
@Override public PreparedStatement createDomainEventTable(Connection connection, EventSchema schema) throws SQLException { String sql = "CREATE TABLE " + schema.domainEventTable() + " (\n" + schema.globalIndexColumn() + " NUMBER(19) NOT NULL,\n" + schema.aggregateIdentifierColumn() + " VARCHAR(255) NOT NULL,\n" + schema.sequenceNumberColumn() + " NUMBER(19) NOT NULL,\n" + schema.typeColumn() + " VARCHAR(255),\n" + schema.eventIdentifierColumn() + " VARCHAR(255) NOT NULL,\n" + schema.metaDataColumn() + " " + payloadType() + ",\n" + schema.payloadColumn() + " " + payloadType() + " NOT NULL,\n" + schema.payloadRevisionColumn() + " VARCHAR(255),\n" + schema.payloadTypeColumn() + " VARCHAR(255) NOT NULL,\n" + schema.timestampColumn() + " VARCHAR(255) NOT NULL,\n" + "PRIMARY KEY (" + schema.globalIndexColumn() + "),\n" + "UNIQUE (" + schema.aggregateIdentifierColumn() + ", " + schema.sequenceNumberColumn() + "),\n" + "UNIQUE (" + schema.eventIdentifierColumn() + ")\n" + ")"; try (PreparedStatement pst = connection.prepareStatement(sql)) { pst.execute(); } Oracle11Utils.simulateAutoIncrement(connection, schema.domainEventTable(), schema.globalIndexColumn()); return Oracle11Utils.createNullStatement(connection); }
/** * Creates a statement to delete all snapshots of the aggregate with given {@code aggregateIdentifier}. * * @param connection The connection to the database. * @param aggregateIdentifier The identifier of the aggregate whose snapshots to delete. * @return A {@link PreparedStatement} that deletes all the aggregate's snapshots when executed. * @throws SQLException when an exception occurs while creating the prepared statement. */ protected PreparedStatement deleteSnapshots(Connection connection, String aggregateIdentifier, long sequenceNumber) throws SQLException { PreparedStatement preparedStatement = connection.prepareStatement( "DELETE FROM " + schema.snapshotTable() + " WHERE " + schema.aggregateIdentifierColumn() + " = ? " + "AND " + schema.sequenceNumberColumn() + " < ?" ); preparedStatement.setString(1, aggregateIdentifier); preparedStatement.setLong(2, sequenceNumber); return preparedStatement; }
/** * Creates a statement to read the snapshot entry of an aggregate with given identifier. * * @param connection The connection to the database. * @param identifier The aggregate identifier. * @return A {@link PreparedStatement} that returns the last snapshot entry of the aggregate (if any) when executed. * * @throws SQLException when an exception occurs while creating the prepared statement. */ protected PreparedStatement readSnapshotData(Connection connection, String identifier) throws SQLException { final String s = "SELECT " + domainEventFields() + " FROM " + schema.snapshotTable() + " WHERE " + schema.aggregateIdentifierColumn() + " = ? ORDER BY " + schema.sequenceNumberColumn() + " DESC"; PreparedStatement statement = connection.prepareStatement(s); statement.setString(1, identifier); return statement; }
/** * Creates a statement to read the snapshot entry of an aggregate with given identifier. * * @param connection The connection to the database. * @param identifier The aggregate identifier. * @return A {@link PreparedStatement} that returns the last snapshot entry of the aggregate (if any) when executed. * @throws SQLException when an exception occurs while creating the prepared statement. */ protected PreparedStatement readSnapshotData(Connection connection, String identifier) throws SQLException { final String s = "SELECT " + domainEventFields() + " FROM " + schema.snapshotTable() + " WHERE " + schema.aggregateIdentifierColumn() + " = ? ORDER BY " + schema.sequenceNumberColumn() + " DESC"; PreparedStatement statement = connection.prepareStatement(s); statement.setString(1, identifier); return statement; }
@Override public Optional<Long> lastSequenceNumberFor(String aggregateIdentifier) { String sql = "SELECT max(" + schema.sequenceNumberColumn() + ") FROM " + schema.domainEventTable() + " WHERE " + schema.aggregateIdentifierColumn() + " = ?"; return Optional.ofNullable(transactionManager.fetchInTransaction( () -> executeQuery(getConnection(), connection -> { PreparedStatement stmt = connection.prepareStatement(sql); stmt.setString(1, aggregateIdentifier); return stmt; }, resultSet -> nextAndExtract(resultSet, 1, Long.class), e -> new EventStoreException(format("Failed to read events for aggregate [%s]", aggregateIdentifier), e) ))); }
/** * Returns a comma separated list of domain event column names to select from an event or snapshot entry. * * @return comma separated domain event column names. */ protected String domainEventFields() { return String.join(", ", schema.eventIdentifierColumn(), schema.timestampColumn(), schema.payloadTypeColumn(), schema.payloadRevisionColumn(), schema.payloadColumn(), schema.metaDataColumn(), schema.typeColumn(), schema.aggregateIdentifierColumn(), schema.sequenceNumberColumn()); }
/** * Returns a comma separated list of domain event column names to select from an event or snapshot entry. * * @return comma separated domain event column names. */ protected String domainEventFields() { return String.join(", ", schema.eventIdentifierColumn(), schema.timestampColumn(), schema.payloadTypeColumn(), schema.payloadRevisionColumn(), schema.payloadColumn(), schema.metaDataColumn(), schema.typeColumn(), schema.aggregateIdentifierColumn(), schema.sequenceNumberColumn()); }