This block statement follows the well-known try-catch control pattern to process children statements and catch and handle any exceptions thrown by those statements. You must specify at least one <catch> statement.

You can use most EMML statements within <try> or <catch>. Some of the most common are statements, such as <invoke>, <directinvoke>, <sql>, <script> or <xslt> that retrieve data or use other programming languages.

You can also use <throw> within <try> or <catch> to throw exceptions, and possibly stop further mashup or macro processing. Or use <return> to forcibly stop further mashup or macro processing and return the current value of <output>.

For examples, see:

.