This documentation is for WSO2 Enterprise Service Bus version 5.0.0. For the latest ESB, view the latest WSO2 Enterprise Integrator documentation.

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Localtab Group
Localtab
titlePool

The following UI is displayed when you select the Pool option for the Connection Information parameter, indicating that you want the connection to be made via a connection pool.

The parameters available to configure the DB Report mediator are as follows.

Parameter NameDescription
Use TransactionThis parameter specifies whether the database operation should be performed within a transaction or not. Click Yes or No as relevant.
DriverThe class name of the database driver.
Url

The JDBC URL of the database that data will be written to.

Set the autoReconnect parameter to true to help reconnect to the database when the connection between the client and the database is dropped. For example, <url>jdbc:mysql://<ip>:<port>/test?autoReconnect=true</url>.

UserThe user name used to connect to the database.
PasswordThe password used to connect to the database.
Adding properties to the DB Report mediator

If you click Add Property, the page will expand to display the following parameters.

The parameters available to manage properties are as follows.

Parameter NameDescription
NameThe name of the property.
ValueThe value of the property.
ActionThis parameter enables a property to be deleted.

The available properties are as follows.

Name

Value

Description

autocommit

true / false

The auto-commit state of the connections created by the pool.

isolation

Connection.TRANSACTION_NONE / Connection.TRANSACTION_READ_COMMITTED / Connection.TRANSACTION_READ_UNCOMMITTED / Connection.TRANSACTION_REPEATABLE_READ / Connection.TRANSACTION_SERIALIZABLE

The isolation state of the connections created by the pool.

initialsize

int

The initial number of connections created when the pool is started.

maxactive

int

The maximum number of active connections that can be allocated from this pool at a given time. When this maximum limit is reached, no more active connections will be created by the connection pool. Specify 0 or a negative value if you do not want to set a limit.

maxidle

int

The maximum number of idle connections to be allowed in the connection pool at a given time. Specify 0 or a negative value if you want the pool to wait indefinitely.

maxopenstatements

int

The maximum number of open statements that can be allocated from the statement pool at a given time. When this maximum limit is reached, no more new statements will be created by the statement pool. Specify 0 or a negative value if you do not want to set a limit.

maxwait

long

The maximum number of milliseconds that the connection pool will wait for a connection to return before throwing an exception when there are no connections available in the pool. Specify 0 or a negative value if you want the pool to wait indefinitely.

minidle

int

The minimum number of idle connections to be allowed in the connection pool at a given time. Specify 0 or a negative value if you want the pool to wait indefinitely.

poolstatements

true/ false

If the value is true, statement pooling is enabled for the pool.

testonborrow

true/ false

If the value is true, objects are validated before they are borrowed from the pool. An object which fails the validation test will be dropped from the pool and another object in the pool will be picked instead.

testwhileidle

true/ false

If the value is true, the objects in the pool will be validated using an idle object evictor (if any exists). Any object which fails this validation test would be dropped from the pool.

validationquery

String

The SQL query that

will be

is used to validate connections from this pool before returning them to the caller.

This property helps to reconnect to the database when the database connection between the client and the database is dropped. For example, <property name="validationquery" value="select 1"/>.

Localtab
titleData Source

The UI configuration of the DBLookup mediator further differs based on whether the connection to the database is made using an external datasource or a Carbon datasource. Click on the relevant tab to view the required UI configuration.

Localtab Group
Localtab
titleExternal

The following UI is displayed if you select the External option for the Datasource Type parameter, indicating that you want the connection to the database to be made using an external datasource.

The parameters available to configure the DB Report mediator are as follows.

Parameter NameDescription
Use TransactionThis parameter specifies whether the database operation should be performed within a transaction or not. Click Yes or No as relevant.
Initial ContextThe initial context factory class. The corresponding Java environment property is java.naming.factory.initial.
Datasource NameThe naming service provider URL . The corresponding Java environment property is java.naming.provider.url.
URLThe JDBC URL of the database that data will be written to.
UserThe user name used to connect to the database.
PasswordThe password used to connect to the database.

 

Adding properties to the DB Report mediator

If you click Add Property, the page will expand to display the following parameters.

The parameters available to manage properties are as follows.

Parameter NameDescription
NameThe name of the property.
ValueThe value of the property.
ActionThis parameter enables a property to be deleted.

 

The available properties are as follows.

Name

Value

Description

autocommit

true / false

The auto-commit state of the connections created by the pool.

isolation

Connection.TRANSACTION_NONE / Connection.TRANSACTION_READ_COMMITTED / Connection.TRANSACTION_READ_UNCOMMITTED / Connection.TRANSACTION_REPEATABLE_READ / Connection.TRANSACTION_SERIALIZABLE

The isolation state of the connections created by the pool.

initialsize

int

The initial number of connections created when the pool is started.

maxactive

int

The maximum number of active connections that can be allocated from this pool at a given time. When this maximum limit is reached, no more active connections will be created by the connection pool. Specify 0 or a negative value if you do not want to set a limit.

maxidle

int

The maximum number of idle connections to be allowed in the connection pool at a given time. Specify 0 or a negative value if you want the pool to wait indefinitely.

maxopenstatements

int

The maximum number of open statements that can be allocated from the statement pool at a given time. When this maximum limit is reached, no more new statements will be created by the statement pool. Specify 0 or a negative value if you do not want to set a limit.

maxwait

long

The maximum number of milliseconds that the connection pool will wait for a connection to return before throwing an exception when there are no connections available in the pool. Specify 0 or a negative value if you want the pool to wait indefinitely.

minidle

int

The minimum number of idle connections to be allowed in the connection pool at a given time. Specify 0 or a negative value if you want the pool to wait indefinitely.

poolstatements

true/ false

If the value is true, statement pooling is enabled for the pool.

testonborrow

true/ false

If the value is true, objects are validated before they are borrowed from the pool. An object which fails the validation test will be dropped from the pool and another object in the pool will be picked instead.

testwhileidle

true/ false

If the value is true, the objects in the pool will be validated using an idle object evictor (if any exists). Any object which fails this validation test would be dropped from the pool.

validationquery

String

The SQL query that will be used to validate connections from this pool before returning them to the caller.
Localtab
titleCarbon Datasource

The following UI is displayed if you select the Carbon Datasource option for the Datasource Type parameter, indicating that you want the connection to the database to be made using an Carbon datasource.

 

Parameter NameDescription
Use TransactionThis parameter specifies whether the database operation should be performed within a transaction or not. Click Yes or No as relevant.
DatasourceThis parameter is used to selected a specific Carbon datasource you want to use to make the connection. All the Carbon datasources which are currently available are included in the list.

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