open()

Here’s how to use open() functions.

f.open( p )

Description:

Use password to open a composite table file or a homo-name files group.

Syntax:

f.open(p)

Note:

The function opens an existing composite table file or a homo-name files group using the password. A write password is needed to update the file and a read password is only for the access. For a homo-name files group, each file must have same data structure and use same passwords. A missing member file in a files group means the corrreponding part of data is missing. Merge a patch file, if there is one, with the existing data when retrieving a member file.

Parameters:

f

A composite table/homo-name files group

p

A password

Return value:

An entity table

Example:

 

A

 

1

=file("D:\\emp.ctx")

 

2

=A1.open("123")

Use the read password to open emp.ctx

3

=file("emp1.ctx":[0,1,2])

The files named emp1.ctx in data zones 0, 1, and 2 have same structure and passwords

4

=A3.open("456")

Use the read password to open emp1.ctx

5

=file("empTest.ctx")

empTest.ctx has a patch file

6

=A5.open("000")

Merge the patch file into the composite file and and read the whole file

7

=file("Score1.ctx",["192.168.0.104:8281"])

 

8

=A7.open("123!@#")

Open the remote file Score1.ctx using the read password

f.open( p )

Description:

Use password to open a cluster file.

Syntax:

f.open(p)

Note:

Then function opens cluster file f and generates a cluster able based on f.

Parameters:

f

A cluster file

p

Password

Return value:

An entity table

Example:

 

A

 

1

=file("employee.ctx":[1],["192.168.0.104:8281"])

Open a cluster file

2

=A1.open("11")

Use the read password to open employee.ctx and generates a cluster table based on it