com.feedzai.commons.sql.abstraction.engine.impl

Class SqlServerEngine

java.lang.Object

com.feedzai.commons.sql.abstraction.engine.AbstractDatabaseEngine

com.feedzai.commons.sql.abstraction.engine.impl.SqlServerEngine

All Implemented Interfaces:

DatabaseEngine, AutoCloseable

public class SqlServerEngine
extends AbstractDatabaseEngine

SQLServer specific database implementation.

Since:

2.0.0

Author:

Rui Vilao (rui.vilao@feedzai.com)

Field Summary

Fields

Modifier and Type	Field and Description
static int	INDEX_ALREADY_EXISTS Sequence does not exist.
static int	MAXIMUM_VARBINARY_SIZE The maximum size for the VARBINARY type.
static int	NAME_ALREADY_EXISTS Name is already used by an existing object.
protected static String	SQLSERVER_DRIVER The SQLServer JDBC driver.
static QueryExceptionHandler	SQLSERVER_QUERY_EXCEPTION_HANDLER An instance of QueryExceptionHandler specific for SQLServer engine, to be used in disambiguating SQL exceptions.
static int	TABLE_CAN_ONLY_HAVE_ONE_PRIMARY_KEY Table can have only one primary key.
static int	TABLE_OR_VIEW_DOES_NOT_EXIST Table or view does not exist.

Fields inherited from class com.feedzai.commons.sql.abstraction.engine.AbstractDatabaseEngine

conn, currentSchema, DEFAULT_QUERY_EXCEPTION_HANDLER, dev, dialect, eh, entities, injector, logger, notificationLogger, properties, socketTimeoutExecutor, stmts, translator

Constructor Summary

Constructors

Constructor and Description
SqlServerEngine(PdbProperties properties) Creates a new SQL Server connection.

Method Summary

Modifier and Type	Method and Description
protected void	addColumn(DbEntity entity, DbColumn... columns) Adds the column to an existent table.
protected void	addFks(DbEntity entity, Set<DbFk> fks) Adds foreign key constraints to the table in the database that the provided entity represents.
protected void	addIndexes(DbEntity entity) Add the desired indexes.
protected void	addPrimaryKey(DbEntity entity) Add a primary key to the entity.
protected void	addSequences(DbEntity entity) Adds the necessary sequences.
protected MappedEntity	createPreparedStatementForInserts(DbEntity entity) Creates and gets the prepared statement that will be used for insertions.
protected ResultIterator	createResultIterator(PreparedStatement ps) Creates a specific ResultIterator for the engine in place given a prepared statement.
protected ResultIterator	createResultIterator(Statement statement, String sql) Creates a specific ResultIterator given the engine implementation.
protected void	createTable(DbEntity entity) Creates the table.
protected long	doPersist(PreparedStatement ps, MappedEntity me, boolean useAutoInc, int lastBindPosition) DB engine specific auxiliary method for AbstractDatabaseEngine.persist(String, EntityEntry, boolean) to effectively perform the persist action.
protected void	dropColumn(DbEntity entity, String... columns) Drops the column.
protected void	dropReferringFks(DbEntity entity)
protected void	dropSequences(DbEntity entity) Drops the sequences of the entity.
protected void	dropTable(DbEntity entity) Drops the table.
int	executeUpdate(Expression query) Executes the given update.
protected Properties	getDBProperties() Get the properties to be passed to the database connection that will be created.
protected QueryExceptionHandler	getQueryExceptionHandler() Gets the instance of QueryExceptionHandler to be used in disambiguating SQL exceptions.
Class<? extends AbstractTranslator>	getTranslatorClass() Gets the class that translates SQL bound to this engine.
boolean	isStringAggDistinctCapable() Checks if the engine supports using DISTINCT inside a string aggregation.
protected void	setPreparedStatementValue(PreparedStatement ps, int index, DbColumn dbColumn, Object value, boolean fromBatch) Sets a value in the prepared statement.
protected void	setSchema(String schema) Sets the schema for the current connection.

Methods inherited from class com.feedzai.commons.sql.abstraction.engine.AbstractDatabaseEngine

addBatch, addEntity, addFks, beginTransaction, checkConnection, checkConnection, checkConnection, clearParameters, close, commentCharacter, commit, connect, containsEntity, createBatch, createBatch, createBatch, createBatch, createBatch, createBatch, createPreparedStatement, createPreparedStatement, createPreparedStatement, createPreparedStatement, createSelectStatement, dropEntity, dropEntity, dropFkQuery, dropFks, dropFks, dropView, duplicate, entityToPreparedStatement, entityToPreparedStatementForBatch, entityToPreparedStatementInternal, escapeCharacter, executePS, executePSUpdate, executeUpdate, executeUpdateSilently, flush, getConnection, getDialect, getEntities, getEntities, getFinalJdbcConnection, getImportedKeys, getMetadata, getMetadata, getPreparedStatementForPersist, getPrivateKey, getProperties, getPSIterator, getPSIterator, getPSResultSet, getQueryMetadata, getQueryMetadata, getSchema, handleOperation, hasIdentityColumn, inject, isTransactionActive, iterator, iterator, iterator, iterator, iterator, iterator, loadEntity, objectToArray, onConnectionCreated, persist, persist, preparedStatementExists, processResultIterator, query, query, query, query, reconnectExceptionally, removeEntity, removePreparedStatement, rollback, setExceptionHandler, setParameter, setParameter, setParameters, setParameterValues, setTransactionIsolation, toPdbType, translate, translateType, updateEntity

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SQLSERVER_DRIVER

protected static final String SQLSERVER_DRIVER

The SQLServer JDBC driver.

NAME_ALREADY_EXISTS

public static final int NAME_ALREADY_EXISTS

Name is already used by an existing object.

See Also:

Constant Field Values

TABLE_CAN_ONLY_HAVE_ONE_PRIMARY_KEY

public static final int TABLE_CAN_ONLY_HAVE_ONE_PRIMARY_KEY

Table can have only one primary key.

See Also:

Constant Field Values

INDEX_ALREADY_EXISTS

public static final int INDEX_ALREADY_EXISTS

Sequence does not exist.

See Also:

Constant Field Values

TABLE_OR_VIEW_DOES_NOT_EXIST

public static final int TABLE_OR_VIEW_DOES_NOT_EXIST

Table or view does not exist.

See Also:

Constant Field Values

MAXIMUM_VARBINARY_SIZE

public static final int MAXIMUM_VARBINARY_SIZE

The maximum size for the VARBINARY type.

See Also:

Constant Field Values

SQLSERVER_QUERY_EXCEPTION_HANDLER

public static final QueryExceptionHandler SQLSERVER_QUERY_EXCEPTION_HANDLER

An instance of QueryExceptionHandler specific for SQLServer engine, to be used in disambiguating SQL exceptions.

Constructor Detail

SqlServerEngine

public SqlServerEngine(PdbProperties properties)
                throws DatabaseEngineException

Creates a new SQL Server connection.

Parameters:

properties - The properties for the database connection.

Throws:

DatabaseEngineException - When the connection fails.

Method Detail

getDBProperties

protected Properties getDBProperties()

Description copied from class: AbstractDatabaseEngine

Get the properties to be passed to the database connection that will be created. Since these properties are specific to the database engine, it is up to the AbstractDatabaseEngine implementation to specify them. This is used, for instance, to set the database connection timeout.

Overrides:

getDBProperties in class AbstractDatabaseEngine

Returns:

the properties of the connection to the database.

setPreparedStatementValue

protected void setPreparedStatementValue(PreparedStatement ps,
                                         int index,
                                         DbColumn dbColumn,
                                         Object value,
                                         boolean fromBatch)
                                  throws Exception

Description copied from class: AbstractDatabaseEngine

Sets a value in the prepared statement.

Overrides:

setPreparedStatementValue in class AbstractDatabaseEngine

Parameters:

ps - The prepared statement.

index - The index of the value to set in the prepared statement.

dbColumn - The DbColumn for which to set the value in the prepared statement.

value - The value to set.

fromBatch - Whether this translation is to be done in the context of a batch update.

Throws:

Exception - If something wrong occurs setting the value.

createTable

protected void createTable(DbEntity entity)
                    throws DatabaseEngineException

Description copied from class: AbstractDatabaseEngine

Creates the table.

Specified by:

createTable in class AbstractDatabaseEngine

Parameters:

entity - The entity.

Throws:

DatabaseEngineException - If something goes wrong while creating the table.

addPrimaryKey

protected void addPrimaryKey(DbEntity entity)
                      throws DatabaseEngineException

Description copied from class: AbstractDatabaseEngine

Add a primary key to the entity.

Specified by:

addPrimaryKey in class AbstractDatabaseEngine

Parameters:

entity - The entity.

Throws:

DatabaseEngineException - If something goes wrong while creating the table.

addIndexes

protected void addIndexes(DbEntity entity)
                   throws DatabaseEngineException

Description copied from class: AbstractDatabaseEngine

Add the desired indexes.

Specified by:

addIndexes in class AbstractDatabaseEngine

Parameters:

entity - The entity.

Throws:

DatabaseEngineException - If something goes wrong while creating the table.

addSequences

protected void addSequences(DbEntity entity)

Description copied from class: AbstractDatabaseEngine

Adds the necessary sequences.

Specified by:

addSequences in class AbstractDatabaseEngine

Parameters:

entity - The entity.

createPreparedStatementForInserts

protected MappedEntity createPreparedStatementForInserts(DbEntity entity)
                                                  throws DatabaseEngineException

Description copied from class: AbstractDatabaseEngine

Creates and gets the prepared statement that will be used for insertions.

Specified by:

createPreparedStatementForInserts in class AbstractDatabaseEngine

Parameters:

entity - The entity.

Throws:

DatabaseEngineException - If something goes wrong while creating the table.

dropSequences

protected void dropSequences(DbEntity entity)

Description copied from class: AbstractDatabaseEngine

Drops the sequences of the entity.

Specified by:

dropSequences in class AbstractDatabaseEngine

Parameters:

entity - The entity.

dropTable

protected void dropTable(DbEntity entity)
                  throws DatabaseEngineException

Description copied from class: AbstractDatabaseEngine

Drops the table.

Specified by:

dropTable in class AbstractDatabaseEngine

Parameters:

entity - The entity.

Throws:

DatabaseEngineException - If something goes wrong dropping the sequences.

dropColumn

protected void dropColumn(DbEntity entity,
                          String... columns)
                   throws DatabaseEngineException

Description copied from class: AbstractDatabaseEngine

Drops the column.

Specified by:

dropColumn in class AbstractDatabaseEngine

Parameters:

entity - The entity.

columns - The column name to drop.

Throws:

DatabaseEngineException - If something goes wrong dropping the sequences.

addColumn

protected void addColumn(DbEntity entity,
                         DbColumn... columns)
                  throws DatabaseEngineException

Description copied from class: AbstractDatabaseEngine

Adds the column to an existent table.

Specified by:

addColumn in class AbstractDatabaseEngine

Parameters:

entity - The entity that represents the table.

columns - The db column to add.

Throws:

DatabaseEngineException - If something goes wrong adding columns.

getTranslatorClass

public Class<? extends AbstractTranslator> getTranslatorClass()

Description copied from class: AbstractDatabaseEngine

Gets the class that translates SQL bound to this engine.

Specified by:

getTranslatorClass in class AbstractDatabaseEngine

Returns:

The class that translates SQL bound to this engine.

doPersist

protected long doPersist(PreparedStatement ps,
                         MappedEntity me,
                         boolean useAutoInc,
                         int lastBindPosition)
                  throws Exception

Description copied from class: AbstractDatabaseEngine

DB engine specific auxiliary method for AbstractDatabaseEngine.persist(String, EntityEntry, boolean) to effectively perform the persist action.

Specified by:

doPersist in class AbstractDatabaseEngine

Parameters:

ps - The PreparedStatement to use in the persist operation

me - The mapped entity on which to persist.

useAutoInc - Whether to use autoInc.

lastBindPosition - The position (1-based) of the last bind parameter that was filled in the prepared statement.

Returns:

The ID of the auto generated value (0 if there's no auto generated value). If the table has more than 1 column with auto generated values, then it will return the first column found.

Throws:

Exception - if any problem occurs while persisting.

addFks

protected void addFks(DbEntity entity,
                      Set<DbFk> fks)
               throws DatabaseEngineException

Description copied from class: AbstractDatabaseEngine

Adds foreign key constraints to the table in the database that the provided entity represents.

Overrides:

addFks in class AbstractDatabaseEngine

Parameters:

entity - The entity.

fks - The foreign keys to be added.

Throws:

DatabaseEngineException - If something goes wrong creating the FKs.

dropReferringFks

protected void dropReferringFks(DbEntity entity)
                         throws DatabaseEngineException

Throws:

DatabaseEngineException

executeUpdate

public int executeUpdate(Expression query)
                  throws DatabaseEngineException

Description copied from class: AbstractDatabaseEngine

Executes the given update.

Specified by:

executeUpdate in interface DatabaseEngine

Overrides:

executeUpdate in class AbstractDatabaseEngine

Parameters:

query - The update to execute.

Throws:

DatabaseEngineException - If something goes wrong executing the update.

isStringAggDistinctCapable

public boolean isStringAggDistinctCapable()

Description copied from interface: DatabaseEngine

Checks if the engine supports using DISTINCT inside a string aggregation.

Returns:

true if the engine supports using DISTINCT inside a string aggregation, false otherwise.

setSchema

protected void setSchema(String schema)
                  throws DatabaseEngineException

Description copied from class: AbstractDatabaseEngine

Sets the schema for the current connection.

Overrides:

setSchema in class AbstractDatabaseEngine

Throws:

DatabaseEngineException - If schema doesn't exist, a database access error occurs or this method is called on a closed connection.

createResultIterator

protected ResultIterator createResultIterator(Statement statement,
                                              String sql)
                                       throws DatabaseEngineException

Description copied from class: AbstractDatabaseEngine

Creates a specific ResultIterator given the engine implementation.

Specified by:

createResultIterator in class AbstractDatabaseEngine

Parameters:

statement - The statement.

sql - The SQL sentence.

Returns:

An iterator for the specific engine.

Throws:

DatabaseEngineException - If a database access error occurs.

createResultIterator

protected ResultIterator createResultIterator(PreparedStatement ps)
                                       throws DatabaseEngineException

Description copied from class: AbstractDatabaseEngine

Creates a specific ResultIterator for the engine in place given a prepared statement.

Specified by:

createResultIterator in class AbstractDatabaseEngine

Parameters:

ps - The prepared statement.

Returns:

The result iterator.

Throws:

DatabaseEngineException - If a database access error occurs.

getQueryExceptionHandler

protected QueryExceptionHandler getQueryExceptionHandler()

Description copied from class: AbstractDatabaseEngine

Gets the instance of QueryExceptionHandler to be used in disambiguating SQL exceptions.

Overrides:

getQueryExceptionHandler in class AbstractDatabaseEngine

Returns:

the QueryExceptionHandler.