XPath - limited logical operators?

Hi out there!
Currently I am experiencing an XPath problem, evaluating an XML file with it.
Imagine I got an XML file like this:
<xml? version="1.0" encoding="UTF-8"?>
<OverallSet>
<Set1>
<group_of_fields>
<requesting_component_command>WUZ</requesting_component_command>
<request_identifier>WUZ</request_identifier>
<request_status_indicator>APP</request_status_indicator>
<mission_number>4bubu </mission_number>
<complying_component_command>PROGRZLW</complying_component_command>
<revised_priority>5</revised_priority>
<comment_abbreviated>NONE</comment_abbreviated>
</group_of_fields>
</Set1>
<Set2>
<requesting_component_command>WUZ</requesting_component_command>
<request_identifier>WUZ</request_identifier>
<request_status_indicator>APP</request_status_indicator>
<mission_number>55</mission_number>
<complying_component_command>PROGRZLW</complying_component_command>
<revised_priority>4</revised_priority>
<comment_abbreviated>NONE</comment_abbreviated>
</Set2>
</OverallSet>
Using XPath i would like to get a Node back, not a boolean value. The Evaluations works fine for the following expression wiht any value:
//child::*[name() = 'mission_number and starts-with(descendant-or-self::*,'4') and contains(descendant-or self::*,'bubu') or name()='revised_priority' and starts-with(descendant-or-self::*,'45') and contains(descendant-or-self::*,'')]/parent::*
as soon, as i put in another AND condition, i get no result anymore - no matter which way i try. May it be name() = 'request_identifier' within the brackets, concatenated with an AND, or may it be as stand alone expression like this [name()='request_identifier'].
So my question is just if there is a certain limit to the logical expressions, and how to put in another AND condition. Do i miss something? Any suggestions welcome!
Thanks for paying attention!
Regards, Jens

Having created the XML files with the XML Spy, i use the XPath evaluation option of the tool itself. Just recognized some inconsistencies and getting confused quite frequently. But the expression should work in any case - shouldnt it?

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Logical operators in Oracle select query

Hello all,
Can i use logical operators in oracle select queries?
for 1 and 0 =0 ; 1 or 0 =0
if i have two fileds in a table COL1 have a value of 1010 and COL2 have a value of 0001.
Is there any way to use select col1 or col2 from table? where or is a logical operator?
Regards,

Hi,
NB wrote:
Hello all,
Can i use logical operators in oracle select queries?Sure; Oracle has the logical operators AND, NOT and OR. All the comparison operators, including >, >=, = !=, EXISTS, IN, IS NULL, LIKE and REGEXP_LIKE are really logical operators, since they return logical values. You can use them in SELECT statements, and other places, too.
for 1 and 0 =0 ; 1 or 0 =0
if i have two fileds in a table COL1 have a value of 1010 and COL2 have a value of 0001.It's unclear what you want. Maybe you'd be interested in the BITAND function:
http://download.oracle.com/docs/cd/B28359_01/server.111/b28286/functions014.htm#sthref1080
BITAND is the only logical function that I know of. Many other functions, especially numberical fucntions such as MOD, have applications in logic.
Is there any way to use select col1 or col2 from table? where or is a logical operator?Whenever you have a question, please post a little sample data (CREATE TABLE and INSERT statements), and also post the results you want from that data.
Explain how you get those results from that data.
Always say which version of Oracle you're using.

Spatial query w/ logical operators in a subquery on Linux using Oracle 1

Hello...
I'm being given XML that I need to parse and create SQL from it. Below my signature is the SQL that I generate (its a simple example) and can be more elaborate due to the logical operators (AND and OR) given in the XML.
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Thanks,
Jim
=========================
SELECT
COLUMN_WE_WANT , RESULTS
FROM
TABLE_A
WHERE
COLUMN_WE_WANT IN
SELECT
COLUMN_WE_WANT
FROM
TABLE_A
WHERE
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SDO_GEOMETRY(2003,
4326,
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) = 'TRUE'
OR
COLUMN_WE_WANT IN
SELECT
COLUMN_WE_WANT
FROM
TABLE_B
WHERE
SOME_PERCENTAGE_RATE_COLUMN < 90
)

Its difficult to comment without seeing the execution plan. You should trace this query to get a better idea of exactly what's happening.
Depending on the complexity of the logical operators, I would look at doing this using set operations. So for an OR you might have...
SELECT COLUMN_WE_WANT, RESULTS
FROM TABLE_A
WHERE COLUMN_WE_WANT IN (
     SELECT COLUMN_WE_WANT
     FROM TABLE_A
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UNION
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Edited by: Reggie to remove the extra INTERSECT

Spatial query w/ logical operators in a subquery on Linux using Oracle 10g

Hello...
I'm being given XML that I need to parse and create SQL from it. Below my signature is the SQL that I generate (its a simple example) and can be more elaborate due to the logical operators (AND and OR) given in the XML.
The problem that we're seeing is performance-based: when one of the logical operator queries is Spatial-based, like below. Running it in JDBC, the query never returns.
The spatial query just by itself returns ~300 rows (takes approximately 0.2 seconds). The "PERCENTAGE" query by itself returns about ~40000 rows (takes approximately ~.8 seconds).
If we run the query below with 2 non-spatial subqueries, the result returns and performance is very acceptable (~ 0.9 seconds)-- the result set is about 80000 rows.
Thanks,
Jim
=========================
SELECT
COLUMN_WE_WANT , RESULTS
FROM
TABLE_A
WHERE
COLUMN_WE_WANT IN
SELECT
COLUMN_WE_WANT
FROM
TABLE_A
WHERE
SDO_OVERLAPBDYINTERSECT(TABLE_A.MY_SPATIAL_COLUMN,
SDO_GEOMETRY(2003,
4326,
null,
SDO_elem_info_array( 1 , 3 , 1 ),
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) = 'TRUE'
OR
COLUMN_WE_WANT IN
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COLUMN_WE_WANT
FROM
TABLE_B
WHERE
SOME_PERCENTAGE_RATE_COLUMN < 90
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There is a spatial forum. You will likely have a far better experience there.

Logical operators using "AND" and "OR" operators

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jschell wrote:
london_guy86 wrote:
jschell wrote:
Not clear what you search, but....
First you need to specifically define the syntax. For example what does the following mean?
a OR b AND c OR d
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Is this what you mean?Hard to say since I don't understand your statement.
There are three parts
1. Parse the expression.
2. Interpret the expression
3. Do the "search", this is actually part of 2 however it should be possible to implement some or all of it separate from 1 and 2.
Do NOT mix the three parts until you are ready to mix them.
Your posted code is mixing them.
Presumably what you posted is mostly search. So to start re-write JUST the search code as a class.
However you can't really do that until you define what the expressions do.After doing everything you mentioned do you think it would be hard to get a score on the best match search found?
If not could you also give me some tips towards that if you know any.
Thanks

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You have to distinguish between attribute search and full text search:
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[http://help.sap.com/saphelp_nwes72/helpdata/en/d0/297dfa25a24a57a31e8364ee2ad7eb/frameset.htm]
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[http://help.sap.com/saphelp_nwes72/helpdata/en/df/f2fb01b6844246b121497b633d83a5/frameset.htm]
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Logical operators

I am trying to run the simple following code:
import java.util.Scanner;
public class again
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}and it retrieves me an Illegal start of expression error on the while expression and it is the same when I use ||, so I think it is some error abou logical operators. Can anyone guide me into this?

while ( (a != 1) && (a != 5) ) // <-- note the enclosing parens...~

Logical operators -- convert OR to ||

Is there anyway to build an if statement from words such as AND,OR?
I have expression language in xml and I'd like to somehow convert that to a java representation.
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Just wondering if anyone has any ideas other than generating source.
I just thought if I can change the xml to have something like if("myval".equals("test")) or "myval".equals("test1")) and then I can just do the conversion to logical operators and return a boolean if the statement is true or false.

ForumKid2 wrote:
Is there anyway to build an if statement from words such as AND,OR?
I have expression language in xml and I'd like to somehow convert that to a java representation.
The only way I can think of is auto generating source, compiling, then running. But that's not something I really want to get into.
Just wondering if anyone has any ideas other than generating source.1. Parse to intermediate form
2. Write an interpreter to run that form.
3. Run the interpreter.

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Jason | http://blog.configmgrftw.com

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Hi All,
I want to filter rows from an XML using AND logical operator.
<?xml version="1.0" encoding="UTF-8" ?>
<RowSet>
<Row>
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<Sem>First</Sem>
<Score>100</Score>
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<Name>jake</Name>
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<Score>200</Score>
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<Name>pete</Name>
<Sem>First</Sem>
<Score>300</Score>
</Row>
</RowSet>
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This doesnt seem to work(with flower brackets repalced by square brackets).Although the OR operator works with the '|'(pipe) symbol in the same manner.
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Edited by: rick_me on May 23, 2009 2:09 AM
Edited by: rick_me on May 23, 2009 2:10 AM

Hi,
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In ORACLE 9I Jdeveloper beta I used the BC4J JSP wizard to create a - Query Form. The query form looks nice and runs except I have to also include the logical operators (= > <) and Quotes. For example to query on the name Joe I have to enter it as ="JOE". If I use JOE it gives me a JSP error. The error message shows the generated Select statment with the where clause JOE but is missing the "=" and quotes.
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Hi Team,
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Vivado 2015.2: Simulation and synthesis reverse bit order of std_logic_vector in logical operators

In both simulation and synthesis the logical operators on std_logic_vector bit-reverse the operands in the result, at least in the case where the result of the expression is passed to a function.
I suspect this issue applies to other operators as well, though I have only tested the problem with the logical operators. I also suspect the issue exists in other situations where a function is not involved.
This is incompatible with both ModelSim simulation and XST synthesis and it breaks a lot of our code.
The attached xsim7.vhd example shows the issue. The xsim7.tcl script will run the Vivado simulation. Under Windows, the xsim7.bat will run the whole thing. The xsim7.xpr project file allows synthesis under Vivado, and you can look at the schematic to see the issue in the synthesized netlist.
The source module also simulates under ModelSim and synthesizes under XST, and these show what I believe to be correct behavior.
Can someone please verify this error and either file a CR or tell me to file an SR?
Ian Lewis
www.mstarlabs.com

Hello Bharath,
When I said "what was index 'LOW becomes index 'HIGH" I meant the 'LOW of the source operands and the 'HIGH of the result, independent of the actual index range. I would have no problem with any 'HIGH and 'LOW on the result of the operator as long as the direction matched the left source operand, though personally I would prefer the same 'HIGH and 'LOW as that of the left operand.
Looking at the IEEE implementation of logical "or" on std_logic_vector from package std_logic_1164: https://standards.ieee.org/downloads/1076/1076.2-1996/std_logic_1164-body.vhdl:
-- or
FUNCTION "or" ( l,r : std_logic_vector ) RETURN std_logic_vector IS
ALIAS lv : std_logic_vector ( 1 TO l'LENGTH ) IS l;
ALIAS rv : std_logic_vector ( 1 TO r'LENGTH ) IS r;
VARIABLE result : std_logic_vector ( 1 TO l'LENGTH );
BEGIN
IF ( l'LENGTH /= r'LENGTH ) THEN
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REPORT "arguments of overloaded 'or' operator are not of the same length"
SEVERITY FAILURE;
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This gives us the 'LEFT 1 and 'RIGHT 4 we see.
So far, I have found no definition from IEEE of what logical operators, such as "or", are supposed to do on std_logic_vector except as defined by this piece of code for "or" and the other operators' associated bodies from the std_logic_1164 package.
What this code does seems like a horrible decision about how to implement the logical operators on std_logic_vector with respect to range direction, but it is compatible with what Vivado does, and incompatible with what XST does. (I had never investigated this issue before because what ModelSim and XST did made perfect sense to me.)
That the assignment (Result := s) works as expected, makes sense. The assignment of the "to" range s to the "downto" range Result maintains the 'LEFT relationship. That is, Result'LEFT (index 3) receives s'LEFT (index 1). So, the bits are reversed a second time.
That ISIM does not match what XST does seems like a defect no matter how you look at it. Your simulation can never match your synthesis if you care about the range direction inside a function (and I suspect in other places too). This deserves an SR or CR if you are still doing any work on those two tools. I think you may not be.
Are you able to find out whether Vivado was changed from XST on purpose with respect to the behavior of logical operators?
If this is "as designed" then I have to start working on updating our code to live with it. But, if this is something that happened by accident, and you will change Vivado to match XST, then I probably want to wait. Updating our code to live with this behavior is going to be a pretty big job.
Thank you for your help,
Ian

XL Reporter - evaluation of logical operators

SAP Version: SAP 2005 A (6.80.319) SP01, PL29
XLR Version: 6.80.367
Hi there all over the world!
For me it is not possible to control the evaluation of logical operators by
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3 are set.
In the selection of XLR only the following logical expression is
possible to express (without the additional brackets!):
ITM(QryGroup1 = Y And QryGroup2 = Y Or QryGroup3 = Y)
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Frank R.

Hi there,
SAP support has answered my question.
Here's the answer for you as additional information:
<b>Unfortunately it is not part of the functionality of XL Reporter to
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expected behaviour of XL Reporter given your inputs.</b>
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