semi合集-English.pdf - 第3135页

SEMI E125-0305 © SEMI 2003, 2005 43 R1-3.5 Retrieve Equipment Configuration — This use case is directly supported by this specification, and provides a way for an ap plication to request a de scription of the physical an…

100%1 / 7923
SEMI E125-0305 © SEMI 2003, 2005 42
R1-3.4 Retrieve Equipment Parameter Descriptions — This use case provides a way for an application to request a
description of all of the data items provided by the equipment, and to determine which components of the equipment
provide that data. This supports automated usage, so that applications that are looking for standardized or well-
known equipment-specific data items can discover their existence on a specific tool. It also supports any manual
usage in which a human user would like to browse and understand equipment-specific data that has not been
standardized. Figure R1-5 shows one example of how this use case can be realized using messages from the
interface defined in this specification (see Section 9).
: Proc essC ontrolC lient
Equipment
GetEquipmentNodeDescriptions()
GetTypes()
GetUnits()
GetEquipmentStructure()
Get all equipment nodes, look for
parameters def ined for each node
Get all type definitions in use by
this equipment, look for types
used by parameters
Get all unit definitions, determine
used by parameter ty pe definitions
Get the equipment structure to
underst and the role of eac h equipment
node in the overall equipment st ruct ure
Figure R1-5
Use Case Realization for “Retrieve Equipment Parameter Descriptions”
SEMI E125-0305 © SEMI 2003, 2005 43
R1-3.5 Retrieve Equipment Configuration — This use case is directly supported by this specification, and provides
a way for an application to request a description of the physical and logical equipment configuration. Figure R1-6
shows one example of how this use case can be realized using messages from the interface defined in this
specification (see Section 9).
: EquipmentD iagnosticsC lient
Equipment
GetEquipment NodeDes criptions()
GetEquipment Struc ture()
Get all equipment nod es, det ermine
nodes that refer to softw are modules
of interest
Get the equipment st ructure to
understand t he role of each node
in the o verall equ ipme nt
Figure R1-6
Use Case Realization for “Retrieve Equipment Configuration”
SEMI E125-0305 © SEMI 2003, 2005 44
RELATED INFORMATION 2
SQL WHERE CLAUSE
NOTICE: This related information is not an official part of SEMI E125 and was derived from the work of the
originating committee. This related information was approved for publication by full letter ballot procedures.
R2-1 Syntax
R2-1.1 The WHERE clause of the SQL SELECT statement is a propositional-expression that consists of one or
more comparisons of values with constants. It has the following form.
WHERE propositional-expression [nested-propositional-expression];
R2-1.2 Syntax
R2-1.2.1 propositional-expression — Specifies a comparison. It takes one of the following forms:
[NOT] term operator term
parameter [NOT] IN (constant
1
,… constant
n
)
parameter [NOT] BETWEEN ( term
1
AND term
2
) (inclusive)
term IS [NOT] NULL | TRUE | FALSE
parameter [NOT] LIKE “string%”
R2-1.2.2 [ ] — An optional equation item.
R2-1.2.3 term — Specifies a parameter, a constant or an arithmetic expression of parameters and constants. The
allowed arithmetic operations are addition (+), subtraction (-), multiplication (*) and division (/).
R2-1.2.4 parameter — Specifies the name of the parameter value to use in the comparison operation.
R2-1.2.5 Constant
1) Specifies a number or a string enclosed by quotation marks.
2) Specifies a conditional. A conditional has the following form.
DECODE( term, constant
1
, return
1
, … constant
n
, return
n
, default )
return
i
The value of the conditional if term equals constant
i
.
default
The value of the conditional if parameter does not equal any constant
i
.
R2-1.2.6 operator — Specifies the operator to use in the comparison. It can be one of the following operators.
Operator Description Operator Description
= Equal <> Not equal
> Greater than < Less than
>= Greater than or equal to <= Less than or equal to
R2-1.3 IN — List Inclusion test (enumeration comparison).
R2-1.4 BETWEEN — Bounds test (limits comparison).
R2-1.5 IS — Equality test.
R2-1.6 LIKE — Pattern matching (string comparison) test. (LIKE only works with ASCII data types).
R2-1.6.1 A | B | … N — One of the listed items is required.