Apex Intermediate Progress | ( Lessons)

Lesson: 10 Common Exception Methods

Notes
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Notes

getCause:

Returns the cause of the exception as an exception object.

getLineNumber:

Returns the line number from where the exception was thrown.

getMessage:

Returns the error message that displays for the user.

getStackTraceString:

Returns the stack trace of a thrown exception as a string.

getTypeName:

Returns the type of exception, such as DmlException, ListException, MathException, and so on.

Causes an SObjectException because we didn't retrieve the Account's site field.

try {
    Account ac = [SELECT Name FROM Account LIMIT 1];
    String newsite =ac.Site;
} catch(Exception e) {
    System.debug('Exception type caught: ' + e.getTypeName());    
    System.debug('Message: ' + e.getMessage());    
    System.debug('Cause: ' + e.getCause());    // returns null
    System.debug('Line number: ' + e.getLineNumber());    
    System.debug('Stack trace: ' + e.getStackTraceString());    
}

getDmlFieldNames(Index of the failed record):

Returns the names of the fields that caused the error for the specified failed record.

getDmlId(Index of the failed record):

Returns the ID of the failed record that caused the error for the specified failed record.

getDmlMessage(Index of the failed record):

Returns the error message for the specified failed record.

getNumDml:

Returns the number of failed records.

Merchandise__c m1 = new Merchandise__c(
    Name='Coffeemaker',
    Description__c='Kitchenware',
    Price__c=25,
    Total_Inventory__c=1000);
// Missing the Price and Total_Inventory fields
Merchandise__c m2 = new Merchandise__c(
    Name='Coffeemaker B',
    Description__c='Kitchenware');
// Missing all required fields
Merchandise__c m3 = new Merchandise__c();
Merchandise__c[] mList = new List<Merchandise__c>();
mList.add(m1);
mList.add(m2);
mList.add(m3);

try {
    insert mList;
} catch (DmlException de) {
    Integer numErrors = de.getNumDml();
    System.debug('getNumDml=' + numErrors);
    for(Integer i=0;i<numErrors;i++) {
        System.debug('getDmlFieldNames=' + de.getDmlFieldNames(i));
        System.debug('getDmlMessage=' + de.getDmlMessage(i));  
    }
}

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Apex Intermediate

A. Apex DML Operations (8 lessons)

B. Apex Classes (17 lessons)

C. Apex Triggers (9 lessons)

D. Apex Exceptions (11 lessons)

E. Asynchronous Apex (6 lessons)

F. SOSL (10 lessons)

G. Testing Apex (9 lessons)

H. Apex Fast Recap (142 lessons)

I. Build Apex Coding Skills (64 lessons)

J. Miscellaneous (17 lessons)

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Lesson: 10 Common Exception Methods

Notes

Apex Intermediate