org.mule.db.commons.internal.domain.connection

Class DefaultDbConnection

java.lang.Object

org.mule.db.commons.internal.domain.connection.DefaultDbConnection

All Implemented Interfaces:

DbConnection, org.mule.runtime.extension.api.connectivity.TransactionalConnection, org.mule.runtime.extension.api.tx.Transactional

public class DefaultDbConnection
extends Object
implements DbConnection

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.slf4j.Logger	logger
protected static int	UNKNOWN_DATA_TYPE

Constructor Summary

Constructors

Constructor and Description
DefaultDbConnection(Connection jdbcConnection, List<DbType> customDataTypes)

Method Summary

Modifier and Type	Method and Description
void	abortActiveLobStreams() Resets the count of the returned results that are streams that still need to be consumed.
void	begin()
void	beginStreaming() Starts streaming.
void	commit()
Array	createArrayOf(String typeName, Object[] elements) Creates an Array of the given typeName with the given values
Struct	createStruct(String typeName, Object[] attributes) Creates an Struct of the given typeName with the given values
void	decrementActiveLobStreams() Decrements the count of the returned results that are streams that need to be consumed.
void	doResolveLobIn(Object[] attributes, int index, int dataType, String dataTypeName)
void	doResolveLobIn(Object[] attributes, int index, String dataTypeName)
void	endStreaming() Marks that the streaming is over
List<DbType>	getCustomDataTypes()
Connection	getJdbcConnection()
protected Map<Integer,ResolvedDbType>	getLobFieldsDataTypeInfo(String typeName)
DatabaseMetaData	getMetaData()
StatementResultIteratorFactory	getStatementResultIteratorFactory(ResultSetHandler resultSetHandler) Returns the StatementResultIteratorFactory used to create the StatementResultIterator for this connection.
List<DbType>	getVendorDataTypes()
boolean	hasActiveLobStreams() Finds out if there are open LOB streams in the results that need to be consumed.
void	incrementActiveLobStreams() Increments the count of the returned results that are streams that need to be consumed.
boolean	isStreaming()
boolean	isTransactionActive()
PreparedStatement	prepareStatement(String sql)
void	release() Closes the underlying JDBC connection, provided that DbConnection.isStreaming() is false
protected void	resolveLobs(String typeName, Object[] attributes, StructAndArrayTypeResolver typeResolver)
void	rollback()
boolean	supportsContentStreaming()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mule.db.commons.internal.domain.connection.DbConnection

createArrayOf, getDbTypeByVendor, getProcedureColumns, getProcedureColumnType, getTables

Field Detail

UNKNOWN_DATA_TYPE

protected static final int UNKNOWN_DATA_TYPE

See Also:

Constant Field Values

logger

protected static final org.slf4j.Logger logger

Constructor Detail

DefaultDbConnection

public DefaultDbConnection(Connection jdbcConnection,
                           List<DbType> customDataTypes)

Method Detail

getStatementResultIteratorFactory

public StatementResultIteratorFactory getStatementResultIteratorFactory(ResultSetHandler resultSetHandler)

Returns the StatementResultIteratorFactory used to create the StatementResultIterator for this connection.

Specified by:

getStatementResultIteratorFactory in interface DbConnection

Parameters:

resultSetHandler - used to process resultSets created from this connection

Returns:

the StatementResultIterator for this connection.

getVendorDataTypes

public List<DbType> getVendorDataTypes()

Specified by:

getVendorDataTypes in interface DbConnection

Returns:

A list of DbTypes which are specific to the Database vendor

getJdbcConnection

public Connection getJdbcConnection()

Specified by:

getJdbcConnection in interface DbConnection

Returns:

The underlying JDBC connection

getCustomDataTypes

public List<DbType> getCustomDataTypes()

Specified by:

getCustomDataTypes in interface DbConnection

Returns:

A list of customer defined DbTypes

begin

public void begin()
           throws org.mule.runtime.api.tx.TransactionException

Specified by:

begin in interface org.mule.runtime.extension.api.tx.Transactional

Throws:

org.mule.runtime.api.tx.TransactionException

commit

public void commit()
            throws org.mule.runtime.api.tx.TransactionException

Specified by:

commit in interface org.mule.runtime.extension.api.tx.Transactional

Throws:

org.mule.runtime.api.tx.TransactionException

rollback

public void rollback()
              throws org.mule.runtime.api.tx.TransactionException

Specified by:

rollback in interface org.mule.runtime.extension.api.tx.Transactional

Throws:

org.mule.runtime.api.tx.TransactionException

release

public void release()

Closes the underlying JDBC connection, provided that DbConnection.isStreaming() is false

Specified by:

release in interface DbConnection

beginStreaming

public void beginStreaming()

Description copied from interface: DbConnection

Starts streaming. Invoke this method when a streaming resultset generated with this connection is about to be iterated

Specified by:

beginStreaming in interface DbConnection

isStreaming

public boolean isStreaming()

Specified by:

isStreaming in interface DbConnection

Returns:

whether DbConnection.beginStreaming() has been invoked on this instance but DbConnection.endStreaming() has not

endStreaming

public void endStreaming()

Description copied from interface: DbConnection

Marks that the streaming is over

Specified by:

endStreaming in interface DbConnection

isTransactionActive

public boolean isTransactionActive()

Specified by:

isTransactionActive in interface DbConnection

Returns:

a boolean indicating if the current connection is being part of a Transaction.

supportsContentStreaming

public boolean supportsContentStreaming()

Specified by:

supportsContentStreaming in interface DbConnection

Returns:

a boolean indicating if the current connection supports to stream the fetched content

incrementActiveLobStreams

public void incrementActiveLobStreams()

Description copied from interface: DbConnection

Increments the count of the returned results that are streams that need to be consumed.

Specified by:

incrementActiveLobStreams in interface DbConnection

decrementActiveLobStreams

public void decrementActiveLobStreams()

Description copied from interface: DbConnection

Decrements the count of the returned results that are streams that need to be consumed.

Specified by:

decrementActiveLobStreams in interface DbConnection

abortActiveLobStreams

public void abortActiveLobStreams()

Description copied from interface: DbConnection

Resets the count of the returned results that are streams that still need to be consumed.

Specified by:

abortActiveLobStreams in interface DbConnection

hasActiveLobStreams

public boolean hasActiveLobStreams()

Description copied from interface: DbConnection

Finds out if there are open LOB streams in the results that need to be consumed.

Specified by:

hasActiveLobStreams in interface DbConnection

Returns:

A boolean indicating if there are open LOB streams that still need to be read.

prepareStatement

public PreparedStatement prepareStatement(String sql)
                                   throws SQLException

Throws:

SQLException

createArrayOf

public Array createArrayOf(String typeName,
                           Object[] elements)
                    throws SQLException

Description copied from interface: DbConnection

Creates an Array of the given typeName with the given values

Specified by:

createArrayOf in interface DbConnection

Parameters:

typeName - The Array type name

elements - The values to convert to an Array

Returns:

The created Array

Throws:

SQLException - if an error occurs trying to create the array.

createStruct

public Struct createStruct(String typeName,
                           Object[] attributes)
                    throws SQLException

Description copied from interface: DbConnection

Creates an Struct of the given typeName with the given values

Specified by:

createStruct in interface DbConnection

Parameters:

typeName - The Struct type name

attributes - The values to convert to an Struct

Returns:

The created Struct

Throws:

SQLException - if an error occurs trying to create the struct.

getMetaData

public DatabaseMetaData getMetaData()
                             throws SQLException

Throws:

SQLException

resolveLobs

protected void resolveLobs(String typeName,
                           Object[] attributes,
                           StructAndArrayTypeResolver typeResolver)
                    throws SQLException

Throws:

SQLException

getLobFieldsDataTypeInfo

protected Map<Integer,ResolvedDbType> getLobFieldsDataTypeInfo(String typeName)
                                                        throws SQLException

Throws:

SQLException

doResolveLobIn

public void doResolveLobIn(Object[] attributes,
                           int index,
                           int dataType,
                           String dataTypeName)
                    throws SQLException

Throws:

SQLException

doResolveLobIn

public void doResolveLobIn(Object[] attributes,
                           int index,
                           String dataTypeName)
                    throws SQLException

Throws:

SQLException