Transaction statement

import ballerina/io;

public function main() returns error? {
    // Compile-time guarantees that transactions are bracketed with
    // begin and commit or rollback. Transaction statement begins
    // a new transaction and executes a block.
    transaction {
        doStage1();
        doStage2();

        // Commit of a transaction must be done explicitly using commit.
        // Commit must be lexically within a transaction statement and may
        // return an error;
        check commit;

    }
    return;
}

function doStage1() {
    io:println("Stage1 completed");
}

function doStage2() {
    io:println("Stage2 completed");
}

Transaction statement

Ballerina provides support for interacting with a transaction manager. Compile-time guarantees that transactions are bracketed with begin and commit or rollback. The region in the middle is typed as being a transactional context. Ballerina does not have a transactional memory and includes a transaction manager. The current transaction is a part of the execution context of a strand.

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Check semantics

import ballerina/io;

public function main() returns error? {

    transaction {
        doStage1();
        doStage2();

Compile-time guarantees that transactions are bracketed with begin and commit or rollback. Transaction statement begins a new transaction and executes a block.

        check commit;

Commit of a transaction must be done explicitly using commit. Commit must be lexically within a transaction statement and may return an error;

    }
    return;
}

function doStage1() {
    io:println("Stage1 completed");
}

function doStage2() {
    io:println("Stage2 completed");
}

bal run transaction_statement.bal
Stage1 completed
Stage2 completed