com.feedzai.commons.sql.abstraction.engine

Interface DatabaseLocal

All Superinterfaces:

DatabaseEngine

All Known Implementing Classes:

DatabaseEngineImpl, DB2Engine, H2Engine, MySqlEngine, OracleEngine, PostgreSqlEngine, SqlServerEngine

public interface DatabaseLocal
extends DatabaseEngine

Provides a set of functions to interact with the database.

Method Summary

Methods

Modifier and Type	Method and Description
Connection	getConnection() Checks if the connection is available and returns it.
ResultIterator	getPSIterator(String name) Creates an iterator for the PreparedStatement bound to the given name.
ResultIterator	iterator(Expression query) Creates an iterator for the given SQL expression.
ResultIterator	iterator(String query) Creates an iterator for the given SQL sentence.

Methods inherited from interface com.feedzai.commons.sql.abstraction.engine.DatabaseEngine

addBatch, addEntity, beginTransaction, checkConnection, checkConnection, clearParameters, close, commentCharacter, commit, containsEntity, createBatch, createPreparedStatement, createPreparedStatement, createPreparedStatement, createPreparedStatement, dropEntity, duplicate, escapeCharacter, executePS, executePSUpdate, executeUpdate, executeUpdate, flush, getDialect, getEntities, getMetadata, getProperties, getPSResultSet, getQueryMetadata, getQueryMetadata, isTransactionActive, persist, persist, preparedStatementExists, query, query, removeEntity, removePreparedStatement, rollback, setParameter, setParameters, translate, updateEntity

Method Detail

getConnection

Connection getConnection()
                         throws RetryLimitExceededException,
                                InterruptedException,
                                RecoveryException

Checks if the connection is available and returns it. If the connection is not available, it tries to reconnect (the number of times defined in the properties with the delay there specified).

Returns:

The connection.

Throws:

RetryLimitExceededException - If the retry limit is exceeded.

InterruptedException - If the thread is interrupted during reconnection.

RecoveryException

iterator

ResultIterator iterator(String query)
                        throws DatabaseEngineException

Creates an iterator for the given SQL sentence.

Parameters:

query - The query.

Returns:

An iterator for the results of the given SQL query.

Throws:

DatabaseEngineException - If a database access error occurs.

iterator

ResultIterator iterator(Expression query)
                        throws DatabaseEngineException

Creates an iterator for the given SQL expression.

Parameters:

query - The expression that represents the query.

Returns:

An iterator for the results of the given SQL expression.

Throws:

DatabaseEngineException - If a database access error occurs.

getPSIterator

ResultIterator getPSIterator(String name)
                             throws DatabaseEngineException

Creates an iterator for the PreparedStatement bound to the given name.

Parameters:

name - The name of the prepared statement.

Returns:

An iterator for the results of the prepared statement of the given name.

Throws:

DatabaseEngineException