Caché MultiValue Basic Reference
When called by a procedure, reads the input buffer contents.
PROCREAD data [THEN statements] [ELSE statements]
||Name of a variable used to receive PROC data from the input buffer.
statement reads the results of a PROC from the primary input buffer into the data
variable. The MVBasic program must have been called by a procedure for PROCREAD
to execute successfully.
variable must be simple variable name. It cannot include a system variable, an EQUATE
, a dynamic array reference, or a substring reference.
When reading from a PQ PROC, PROCREAD
converts the @AM buffer delimiter to a blank space. PROCREAD
converts empty buffer entries to the backslash (\) character. PROCWRITE
reverses these character conversions. For this reason, including a \ literal in the input buffer should be avoided. When reading from a PQN PROC, PROCREAD
does not perform these character conversions.
You can optionally specify a THEN clause, an ELSE clause, or both a THEN and an ELSE clause. If the input buffer read is successful, the THEN clause is executed, even when the contents of the input buffer is the empty string. If input buffer read operation fails, the ELSE clause is executed. If the program containing PROCREAD
was not called by a procedure, the read operation fails and the ELSE clause is executed. The statements
argument can be the NULL
keyword, a single statement, or a block of statements terminated by the END
keyword. A block of statements has specific line break requirements: each statement must be on its own line and cannot follow a THEN, ELSE, or END keyword on that line.