Description

Expression operations.

Collaboration diagram for Expression Operations:

Enumerations
enum	as_exp_read_flags { AS_EXP_READ_DEFAULT = 0, AS_EXP_READ_EVAL_NO_FAIL = 16 }

enum	as_exp_write_flags { AS_EXP_WRITE_DEFAULT = 0, AS_EXP_WRITE_CREATE_ONLY = 1, AS_EXP_WRITE_UPDATE_ONLY = 2, AS_EXP_WRITE_ALLOW_DELETE = 4, AS_EXP_WRITE_POLICY_NO_FAIL = 8, AS_EXP_WRITE_EVAL_NO_FAIL = 16 }

Functions
AS_EXTERN bool	as_operations_exp_read (as_operations ops, const char name, const as_exp *exp, as_exp_read_flags flags)

AS_EXTERN bool	as_operations_exp_write (as_operations ops, const char name, const as_exp *exp, as_exp_write_flags flags)

Enumeration Type Documentation

Expression read flags.

Enumerator
AS_EXP_READ_DEFAULT	Default.
AS_EXP_READ_EVAL_NO_FAIL	Ignore failures caused by the expression resolving to unknown or a non-bin type.

Definition at line 86 of file as_exp_operations.h.

Expression write flags.

Enumerator
AS_EXP_WRITE_DEFAULT	Default. Allow create or update.
AS_EXP_WRITE_CREATE_ONLY	If bin does not exist, a new bin will be created. If bin exists, the operation will be denied. If bin exists, fail with AEROSPIKE_ERR_BIN_EXISTS when AS_EXP_WRITE_POLICY_NO_FAIL is not set.
AS_EXP_WRITE_UPDATE_ONLY	If bin exists, the bin will be overwritten. If bin does not exist, the operation will be denied. If bin does not exist, fail with AEROSPIKE_ERR_BIN_NOT_FOUND when AS_EXP_WRITE_POLICY_NO_FAIL is not set.
AS_EXP_WRITE_ALLOW_DELETE	If expression results in nil value, then delete the bin. Otherwise, return AEROSPIKE_ERR_OP_NOT_APPLICABLE when AS_EXP_WRITE_POLICY_NO_FAIL is not set.
AS_EXP_WRITE_POLICY_NO_FAIL	Do not raise error if operation is denied.
AS_EXP_WRITE_EVAL_NO_FAIL	Ignore failures caused by the expression resolving to unknown or a non-bin type.

Definition at line 42 of file as_exp_operations.h.

AS_EXTERN bool as_operations_exp_read	(	as_operations *	ops,
		const char *	name,
		const as_exp *	exp,
		as_exp_read_flags	flags
	)

Create operation that performs a read expression. Requires server version 5.6.0+.

Parameters

ops	Operations array.
name	Variable name of read expression result. This name can be used as the bin name when retrieving bin results from the record.
exp	Expression to evaluate.
flags	Expression read flags.

AS_EXTERN bool as_operations_exp_write	(	as_operations *	ops,
		const char *	name,
		const as_exp *	exp,
		as_exp_write_flags	flags
	)

Create operation that performs an expression that writes to a record bin. Requires server version 5.6.0+.

Parameters

ops	Operations array.
name	Name of bin.
exp	Expression to evaluate.
flags	Expression write flags. Multiple flags can be specified via "\|" operator.