setType & setField methods not available in SObject - Apex SOAP API

Question

I'm trying to create an object of SObject class and then setting its type to Lead and setting one of the fields for Email.

Eventually, I want to pass this object in findDuplicates() method. But the compiler says that it cannot resolve methods setType and setField for given object. It's failing at the compilation. Following is the code:

    SObject[] inputSObjectArray = new SObject[1];
    // Instantiate an empty Java SObject
    SObject searchCriteria = new SObject();
    // Set its type to Lead.
    searchCriteria.setType("Lead");
    // Set Email field.
    searchCriteria.setField("Email", "[email protected]");
    // Add the sObject to the input array
    inputSObjectArray[0] = searchCriteria;

    Connection.getInstance().getConnection().setDuplicateRuleHeader(false, true, false);

    FindDuplicatesResult[] callResults = null;

    try {
        callResults = Connection.getInstance().getConnection().findDuplicates(inputSObjectArray);
    } catch (ConnectionException e) {
        e.printStackTrace();
    }

    if (callResults != null && callResults.length > 0) {
        // print results
    }

Following is the compilation error:

Error:(223, 23) java: cannot find symbol
symbol: method setType(java.lang.String)
location: variable searchCriteria of type com.sforce.soap.enterprise.sobject.SObject

Error:(225, 23) java: cannot find symbol
symbol: method setField(java.lang.String,java.lang.String)
location: variable searchCriteria of type com.sforce.soap.enterprise.sobject.SObject

I'm referring to the sample code given for Java in SalesForce documentation. Ref: https://resources.docs.salesforce.com/206/latest/en-us/sfdc/pdf/apex_api.pdf

Update: I've got the enterprise.wsdl from my SalesForce Admin. I generated the enterprise.jar using the guidelines from here. And I've included this external jar in my Java project. So I'm assuming all the Core classes / methods should be available for use to me, which is not happening.

Answer 1

The sample code appears to be using the Partner API.

Your example error messages indicate you are using the Enterprise WSDL (com.sforce.soap.enterprise.sobject.SObject).

The Partner API is loosely typed versus the Enterprise WSDL which is strongly typed. Because the Partner API is loosely typed you need to set the sObject type (setType) and use a generic method to set the field values (setField). The Enterprise WSDL in comparison would has a strongly typed Lead class with a dedicated property to set the Email field.

The Partner API is more flexible as it isn't tied to a fixed schema in Salesforce. The Enterprise API is easier up front as everything is strongly typed. However, the Enterprise API makes handling changes much harder.

Try using the Partner API WSDL instead if you want to keep the current code you have. Then the sObject class should be from the com.sforce.soap.partner.sobject.wsc namespace.