Oracle存储过程 - Spring集成 - OUT类型对象

Question

Is it possible to have Oracle type object as an output from a stored procedure, calling same using spring integration?

For example, I have the following in the database:

create or replace TYPE ESP_TRAINING_REQ_OBJ AS OBJECT 
(
    v_param1 varchar2(25),
    v_param2 varchar2(25)
);

create or replace TYPE ESP_TRAINING_RESP_OBJ AS OBJECT 
(
    v_param1 varchar2(25),
    v_param2 varchar2(25)
);

create or replace PROCEDURE TEST_PROC (
    v_req_obj IN ESP_TRAINING_REQ_OBJ,
    v_resp_obj OUT ESP_TRAINING_RESP_OBJ
) AS
BEGIN
    v_resp_obj := ESP_TRAINING_RESP_OBJ(v_req_obj.v_param2, v_req_obj.v_param1);
    dbms_output.put_line('TEST_PROC');
END;

However, when I try calling it, I'm getting the following exception:

PLS-00306: wrong number or types of arguments in call to 'TEST_PROC'

Please find spring integration configuration bellow:

<int-jdbc:stored-proc-outbound-gateway
        id="ESP_TRAINING" request-channel="inputChannel"
        stored-procedure-name="TEST_PROC" data-source="dataSource"
        reply-channel="outputChannel"
        skip-undeclared-results="false" ignore-column-meta-data="true">

        <int-jdbc:sql-parameter-definition name="v_req_obj" direction="IN" type="STRUCT" />
        <int-jdbc:sql-parameter-definition name="v_resp_obj" direction="OUT" type="STRUCT" />

        <int-jdbc:parameter name="v_req_obj" expression="payload.v_req_obj"/>

    </int-jdbc:stored-proc-outbound-gateway>

Please note it works fine if we change SP declaration above, for using STRUCT in request only, for example replacing ESP_TRAINING_RESP_OBJ by a VARCHAR or any other Oracle primitive data type.

For Example:

create or replace PROCEDURE TEST_PROC (
    v_req_obj IN ESP_TRAINING_REQ_OBJ,
    v_status OUT VARCHAR2
) AS
BEGIN
    v_status := v_req_obj.v_param1 || ' and ' || v_req_obj.v_param2;
    dbms_output.put_line('TEST_PROC');
END;

Answer 1

I've fixed it doing following:

1. Updated spring integration version to 3.0.0.RELEASE, giving support to both type-name and return-type attribues, inside sql-parameter-definition.

2. Updated stored procedured declaration as follows:

    <int-jdbc:stored-proc-outbound-gateway id="ESP_TRAINING" request-channel="inputChannel" stored-procedure-name="TEST_PROC" data-source="dataSource" reply-channel="outputChannel" skip-undeclared-results="false" ignore-column-meta-data="true"> <int-jdbc:sql-parameter-definition name="v_req_obj" direction="IN" type="STRUCT" /> <int-jdbc:sql-parameter-definition name="v_resp_obj" direction="OUT" type="STRUCT" type-name="ESP_TRAINING_RESP_OBJ" return-type="espTrainingRespObj" /> <int-jdbc:parameter name="v_req_obj" expression="payload.v_req_obj"/> </int-jdbc:stored-proc-outbound-gateway> <beans:bean id="espTrainingRespObj" class="com.hsbc.esp.EspTrainingRespObj"/> 

3. Changed EspTrainingRespObj to implement SQLReturnType, as follows:

    public class EspTrainingRespObj implements SqlReturnType { private String param1; private String param2; public Object getTypeValue(CallableStatement cs, int paramIndex, int sqlType, String typeName) throws SQLException { Object[] attributes = ((STRUCT) cs.getObject(paramIndex)).getAttributes(); this.param1 = (String) attributes[0]; this.param2 = (String) attributes[1]; return this; } ... } 

Answer 2

The return-type on the <int-jdbc:sql-parameter-definition> for OUT param and SqlReturnStruct must help you to solve the issue.

The test-case in the Framework source codes contains this sample for CLOB handling:

<int-jdbc:stored-proc-outbound-gateway request-channel="getMessageChannel"
                                       data-source="dataSource"
                                       stored-procedure-name="GET_MESSAGE"
                                       ignore-column-meta-data="true"
                                       expect-single-result="true"
                                       reply-channel="output2Channel">
    <int-jdbc:sql-parameter-definition name="message_id"/>
    <int-jdbc:sql-parameter-definition name="message_json" type="CLOB" direction="OUT" type-name="" return-type="clobSqlReturnType"/>
    <int-jdbc:parameter name="message_id" expression="payload"/>
</int-jdbc:stored-proc-outbound-gateway>

<bean id="clobSqlReturnType" class="org.mockito.Mockito" factory-method="spy">
    <constructor-arg>
        <bean class="org.springframework.integration.jdbc.storedproc.ClobSqlReturnType"/>
    </constructor-arg>
</bean>