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Difference between revisions of "EDT:Writing statements"
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== Case == | == Case == | ||
− | The case statement | + | The case statement never runs more than one clause: |
− | * You can test a criterion value. The following example invokes <code>mySecondFunction</code> if the field value is 2, 3, or 4: | + | *You can test a criterion value. The following example invokes <code>mySecondFunction</code> if the field value is 2, 3, or 4: |
<source lang="java">case (myRecord.requestID) | <source lang="java">case (myRecord.requestID) | ||
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</source> | </source> | ||
− | * You can test a set of logical expressions | + | *You can test a set of logical expressions. The following example displays only "x passes": |
<source lang="java"> | <source lang="java"> |
Revision as of 12:06, 13 February 2012
EGL provides general statements, as well as statements that are used for interacting with an external data source.
General statements
Case
The case statement never runs more than one clause:
- You can test a criterion value. The following example invokes
mySecondFunction
if the field value is 2, 3, or 4:
case (myRecord.requestID) when (1) myFirstFunction(); when (2, 3, 4) mySecondFunction(); otherwise myDefaultFunction(); end
- You can test a set of logical expressions. The following example displays only "x passes":
function test() x INT = 3; y INT = 5; z INT = 7; case when (x == 3) SysLib.writeStdOut("x passes"); when (y == 5) SysLib.writeStdOut("y passes"); when (z == 7) SysLib.writeStdOut("z passes"); otherwise SysLib.writeStdErr("You will not see this message."); end end end