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| PYMQI DIS CONN w a filter |
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| bobbee |
 Posted: Tue Mar 14, 2023 5:36 am Post subject: PYMQI DIS CONN w a filter |
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Knight
Joined: 20 Sep 2001
Posts: 545
Location: Tampa
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I am trying to issue in PYTHON3 PYMQI a:
DIS CONN(*) where(CHANNEL NE '')
I have tried many combinations but cannot seem to pass an empty string to the command for the filter. This is one variation. Any suggestions?
| Code: |
str = ""
filter1 = pymqi.Filter(pymqi.CMQCFC.MQCACH_CHANNEL_NAME).not_equal(bytes(str, 'UTF-8'))
###
### Issure MQCMD_INQUIRE_CONNECTION
###
try:
### conn_response = pcf.MQCMD_INQUIRE_CONNECTION(conn_args)
conn_response=pcf.MQCMD_INQUIRE_CONNECTION({pymqi.CMQCFC.MQBACF_GENERIC_CONNECTION_ID:pymqi.ByteString(''),pymqi.CMQCFC.MQIACF_CONNECTION_ATTRS:pymqi.CMQCFC.MQIACF_ALL},filter1) |
TypeError: object of type 'StringFilter' has no len() |
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| fjb_saper |
| Posted: Tue Mar 14, 2023 6:52 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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Have you tried passing a null value? or a low value (all hex 00)?
The link I posted in your previous inquiry, with the java info for the field, had some indications about content of the field. 
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| bobbee |
| Posted: Tue Mar 14, 2023 7:17 am Post subject: |
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Knight
Joined: 20 Sep 2001
Posts: 545
Location: Tampa
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| I did try b'/00'. I also tried thinking I could pas the '' to the command. b'\'\''. All go the error on 0 length string. |
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| fjb_saper |
| Posted: Tue Mar 14, 2023 7:28 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| Quote: |
If you specify a byte string of zero length, or one which contains only null bytes, information about all connection identifiers is returned. This value is the only value permitted for GenericConnectionId.
The length of the string is MQ_CONNECTION_ID_LENGTH. |
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