{section}
{column}

h1. Extract and insert data from/to databases (Provides mode)

h2. Usage

{info}The component comes with default local operation names defined in an abstract WSDL. You might import this abstract WSDL in your final WSDL when designing your SU.{info}
{info}Any result is returned in the OUT message by a dedicated thread while the response message is sent back by the message processing thread (piped streaming mechanism), to increase performance.{info}

h3. {{Select}} Operation

MEP supported : InOut
When the {{select}} operation is set on the incoming exchange, the component performs the SQL SELECT statement(s) defined in the {{sql}} element of the IN message. The OUT message returned contains the SQL Result Set.
{info}If you want to get meta-data (name of a column, type of a column, index of a row) in the response, you must activate the meta-data feature. This feature can be set at the Service definition, in the SU, or at runtime, by setting a property 'metadata' to {{true}} in the IN message.
{info}
Example of a IN message :
{code:xml}
<sql xmlns="http://petals.ow2.org/components/sql/version-1">SELECT name, firstname FROM user WHERE id='123'</sql>
{code}
Example of an OUT message returning the content of the SQL Result Set in a XML representation.
{code:xml}
<result xmlns="http://petals.ow2.org/components/sql/version-1">
<row index="1">
<column name="name" type="varchar">Field</column>
<column name="firstname" type="varchar">Jean</column>
</row>
<row index="2">
<column name="name" type="varchar">Foo</column>
<column name="firstname" type="varchar">John</column>
</row>
</result>
{code}

h3. {{Insert}} Operation

MEP supported : InOnly
When the {{insert}} operation is set on the incoming exchange, the component performs the SQL INSERT statement(s) defined in the {{sql}} element of the IN message.
Example of a IN message :
{code:xml}
<sql xmlns="http://petals.ow2.org/components/sql/version-1">insert into user values('toto','toto')</sql>
{code}

h3. {{Delete}} Operation

MEP supported : InOnly
When the {{delete}} operation is set on the incoming exchange, the component performs the SQL DELETE statement(s) defined in the {{sql}} element of the IN message.
Example of a IN message :
{code:xml}
<sql xmlns="http://petals.ow2.org/components/sql/version-1">delete from user where name='toto2'</sql>
{code}

h3. {{Update}} Operation

MEP supported : InOnly
When the {{delete}} operation is set on the incoming exchange, the component performs the SQL UPDATE statement(s) defined in the {{sql}} element of the IN message.
Example of a IN message :
{code:xml}
<sql xmlns="http://petals.ow2.org/components/sql/version-1">update user set firstname='toto3' where name='toto2'</sql>
{code}

h3. {{InsertWithResponse}} Operation

MEP supported : InOut
When the {{insertWithResponse}} operation is set on the incoming exchange, the component performs the SQL INSERT statement(s) defined in the {{sql}} element of the IN message.
The OUT message returned contains the number of row that has been inserted by the statement(s).
Example of a IN message :
{code:xml}
<sql xmlns="http://petals.ow2.org/components/sql/version-1">insert into user values('toto','toto')</sql>
{code}
Example of a OUT message returning the number of inserted row :
{code:xml}
<updated xmlns="http://petals.ow2.org/components/sql/version-1">1</updated>
{code}


h3. {{DeleteWithResponse}} Operation

MEP supported : InOut
When the {{deleteWithResponse}} operation is set on the incoming exchange, the component performs the SQL DELETE statement(s) defined in the {{sql}} element of the IN message.
The OUT message returned contains the number of row that has been deleted by the statement(s).
Example of a IN message :
{code:xml}
<sql xmlns="http://petals.ow2.org/components/sql/version-1">delete from user where name!='test'</sql>
{code}
Example of a OUT message returning the number of deleted row :
{code:xml}
<updated xmlns="http://petals.ow2.org/components/sql/version-1">3</updated>
{code}


h3. {{UpdateWithResponse}} Operation

MEP supported : InOut
When the {{updateWithResponse}} operation is set on the incoming exchange, the component performs the SQL UPDATE statement(s) defined in the {{sql}} element of the IN message.
The OUT message returned contains the number of row that has been updated by the statement(s).
Example of a IN message :
{code:xml}
<sql xmlns="http://petals.ow2.org/components/sql/version-1">update user set firstname='toto3' where name='toto2'</sql>
{code}
Example of a OUT message returning the number of updated row :
{code:xml}
<updated xmlns="http://petals.ow2.org/components/sql/version-1">1</updated>
{code}

h3. {{StoredProcedure}} Operation

MEP supported : InOut
Before using this operation, it is possible to register the target stored procedure, defined in the SU, during the deployment of this latter.
If the stored procedure has been registered, it will be unregistered at the undeployment of the SU.
\\
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If the stored procedure already exits, the signature of the stored procedure must be defined in the SU.
\\
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When the {{storedProcedure}} operation is set on the incoming exchange, the component extracts the list of IN or/and INOUT parameter(s) set in the request. Then, it performs the stored procedure.
The OUT message contains the list of INOUT or/and OUT parameter(s) returned by the stored procedure, in a raw form.
Example of a IN message :
{code:xml}
<storedProcedure xmlns="http://petals.ow2.org/components/sql/version-1">
<parameter rank="1">toto</parameter>
<parameter rank="2">3</parameter>
<parameter rank="3">2008-03-28</parameter>
</storedProcedure>
{code}
Example of a OUT message containing INOUT or/and OUT parameter(s) :
{code:xml}
<storedProcedure xmlns="http://petals.ow2.org/components/sql/version-1">2:INOUT:5;4:OUT:true</storedProcedure>
{code}

h3. {{XMLStoredProcedure}} Operation

MEP supported : InOut
Before using this operation, it is possible to register the target stored procedure, defined in the SU, during the deployment of this latter.
If the stored procedure has been registered, it will be unregistered at the undeployment of the SU.
\\
\\
If the stored procedure already exits, the signature of the stored procedure must be defined in the SU.
\\
\\
When the {{storedProcedure}} operation is set on the incoming exchange, the component extracts the list of IN or/and INOUT parameter(s) set in the request. Then, it performs the stored procedure.
The OUT message contains the list of INOUT or/and OUT parameter(s) returned by the stored procedure, in a XML structured form.
Example of a IN message :
{code:xml}
<storedProcedure xmlns="http://petals.ow2.org/components/sql/version-1">
<parameter rank="1">toto</parameter>
<parameter rank="2">3</parameter>
<parameter rank="3">2008-03-28</parameter>
</storedProcedure>
{code}
Example of a OUT message containing INOUT or/and OUT parameter(s) :
{code:xml}
<storedProcedure xmlns="http://petals.ow2.org/components/sql/version-1">
<parameter rank="2">5</parameter>
<parameter rank="4">true</parameter>
</storedProcedure>
{code}

xmlns:interfaceNs="http://petals.ow2.org/components/sql/version-1"
xmlns:jbi="http://java.sun.com/xml/ns/jbi"
xmlns:petalsCDK="http://petals.ow2.org/components/extensions/version-5"
xmlns:serviceNs="http://test"
xmlns:sql="http://petals.ow2.org/components/sql/version-1"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<!-- Import a Service into PEtALS or Expose a PEtALS Service => use a BC. -->
<jbi:services binding-component="true">
<!-- Import a Service into PEtALS => provides a Service. -->
<jbi:provides
interface-name="interfaceNs:SQLInterface"
service-name="serviceNs:MyDatabaseSQLService"
endpoint-name="MyDatabaseSQLServiceEndpoint">
<!-- CDK specific elements -->
<petalsCDK:wsdl>SQLService.wsdl</petalsCDK:wsdl>
<!-- Component specific elements -->
<sql:url>jdbc:mysql://host_name:port/dbname</sql:url>
<sql:user>test</sql:user>
<sql:password>test</sql:password>
<sql:maxActive>8</sql:maxActive>
<sql:maxIdle>8</sql:maxIdle>
<sql:minIdle>0</sql:minIdle>
<sql:maxWait>-1</sql:maxWait>
<sql:timeBetweenEvictionRunsMillis>-1</sql:timeBetweenEvictionRunsMillis>
<sql:metadata>true</sql:metadata>
</jbi:provides>
</jbi:services>
</jbi:jbi>

The Service Unit has to contain the following elements, packaged in an archive:
* The META-INF/jbi.xml descriptor file, has described above
{code}