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  • PL-SQL - Two statements with begin and end, run fine seperately but not together?

    - by Twiss
    Hi all, Just wondering if anyone can help with this, I have two PLSQL statements for altering tables (adding extra fields) and they are as follows: -- Make GC_NAB field for Next Action By Dropdown begin if 'VARCHAR2' = 'NUMBER' and length('VARCHAR2')>0 and length('')>0 then execute immediate 'alter table "SERVICEMAIL6"."ETD_GUESTCARE" add(GC_NAB VARCHAR2(10, ))'; elsif ('VARCHAR2' = 'NUMBER' and length('VARCHAR2')>0 and length('')=0) or 'VARCHAR2' = 'VARCHAR2' then execute immediate 'alter table "SERVICEMAIL6"."ETD_GUESTCARE" add(GC_NAB VARCHAR2(10))'; else execute immediate 'alter table "SERVICEMAIL6"."ETD_GUESTCARE" add(GC_NAB VARCHAR2)'; end if; commit; end; -- Make GC_NABID field for Next Action By Dropdown begin if 'NUMBER' = 'NUMBER' and length('NUMBER')>0 and length('')>0 then execute immediate 'alter table "SERVICEMAIL6"."ETD_GUESTCARE" add(GC_NABID NUMBER(, ))'; elsif ('NUMBER' = 'NUMBER' and length('NUMBER')>0 and length('')=0) or 'NUMBER' = 'VARCHAR2' then execute immediate 'alter table "SERVICEMAIL6"."ETD_GUESTCARE" add(GC_NABID NUMBER())'; else execute immediate 'alter table "SERVICEMAIL6"."ETD_GUESTCARE" add(GC_NABID NUMBER)'; end if; commit; end; When I run these two queries seperately, no problems. However, when run together as shown above, Oracle gives me an error when it starts the second statement: Error report: ORA-06550: line 15, column 1: PLS-00103: Encountered the symbol "BEGIN" 06550. 00000 - "line %s, column %s:\n%s" *Cause: Usually a PL/SQL compilation error. *Action: I'm assuming that this means the first statement is not terminated properly... is there anything I should put inbetween the statements to make it work properly? Thanks in advance everyone!

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  • How to load two divs into separate targets with JQuery?

    - by Bussard
    Hi all, I'm trying to achieve two things, both of which I fail to get at. On a server are a series of notes; all contain a div (id=ajxContent). Some notes also contain an additiona div (id=ajxHead). The ajxContent itself contains links (class=clicking) to call the next installment, hence the link destination in a variable. This is my code: $(document).ready(function(){ $( 'a.clicking' ).live('click', function(e){ e.preventDefault(); var theLink = $(this).attr('href'); $('#loadText').load(theLink + '#ajxContent'); $('h1').load(theLink + '#ajxHead'); }); }) Where it fails: 1) the ajxContent gets loaded into the h1 tag as well as in its intended target. 2) when I had set up the code differently, if there was no div id=ajxHead present in a note, the load would nevertheless erase the existing value in the h1 tag. Am I on a totally wrong track here, with two load statements? Input is very welcome, thanks.

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  • How do I determine when two moving points become visible to each other?

    - by Devin Jeanpierre
    Suppose I have two points, Point1 and Point2. At any given time, these points may be at different positions-- they are not necessarily static. Point1 is located at some position at time t, and its position is defined by the continuous functions x1(t) and y1(t) giving the x and y coordinates at time t. These functions are not differentiable, they are constructed piecewise from line segments. Point2 is the same, with x2(t) and y2(t), each function having the same properties. The obstacles that might prevent visibility are simple (and immobile) polygons. How can I find the boundary points for visibility? i.e. there are two kinds of boundaries: where the points become visible, and become invisible. For a become-visible boundary i, there exists some ?0, such that for any real number a, a ? (i-?, i) , Point1 and Point2 are not visible (i.e. the line segment that connects (x1(a), y1(a)) to (x2(a), y2(x)) crosses some obstacles). For b ? (i, i+?) they are visible. And it is the other way around for becomes-invisible. But can I find such a precise boundary, and if so, how?

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  • How do I do a table join on two fields in my second table?

    - by Cannonade
    I have two tables: Messages - Amongst other things, has a to_id and a from_id field. People - Has a corresponding person_id I am trying to figure out how to do the following in a single linq query: Give me all messages that have been sent to and from person x (idself). I had a couple of cracks at this. Not quite right MsgPeople = (from p in db.people join m in db.messages on p.person_id equals m.from_id where (m.from_id == idself || m.to_id == idself) orderby p.name descending select p).Distinct(); This almost works, except I think it misses one case: "people who have never received a message, just sent one to me" How this works in my head So what I really need is something like: join m in db.messages on (p.people_id equals m.from_id or p.people_id equals m.to_id) Gets me a subset of the people I am after It seems you can't do that. I have tried a few other options, like doing two joins: MsgPeople = (from p in db.people join m in AllMessages on p.person_id equals m.from_id join m2 in AllMessages on p.person_id equals m2.to_id where (m2.from_id == idself || m.to_id == idself) orderby p.name descending select p).Distinct(); but this gives me a subset of the results I need, I guess something to do with the order the joins are resolved. My understanding of LINQ (and perhaps even database theory) is embarrassingly superficial and I look forward to having some light shed on my problem.

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  • How can I differentiate two different touches on a layer ?

    - by srikanth rongali
    I am writing an app in cocos2d. I hava a sprite and a text in my scene. I have written two separate classes for sprite and text. And I added both of them to another class. In sprite class I have written - (void)ccTouchesEnded:(NSSet *)touches withEvent:(UIEvent *)event And in text class I have written -(void) registerWithTouchDispatcher { [[CCTouchDispatcher sharedDispatcher]addTargetedDelegate:self priority:0 swallowsTouches:YES]; } -(BOOL) ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event { return YES; } -(void) ccTouchEnded:(UITouch *)touch withEvent:(UIEvent *)event { NSLog(@"Recognized tOuches in Instructions");// CGSize windowSize = [[CCDirector sharedDirector] winSize]; CCNode *node = [self getChildByTag:kTagNode]; [node setPosition: ccp(text1.contentSize.width/2,text1.contentSize.height/2 - windowSize.height)]; } -(void) ccTouchMoved:(UITouch *)touch withEvent:(UIEvent *)event { CGPoint touchLocation = [touch locationInView: [touch view]]; CGPoint prevLocation = [touch previousLocationInView: [touch view]]; touchLocation = [[CCDirector sharedDirector] convertToGL: touchLocation]; prevLocation = [[CCDirector sharedDirector] convertToGL: prevLocation]; CGPoint diff = ccpSub(touchLocation,prevLocation); CCNode *node = [self getChildByTag:kTagNode]; CGPoint currentPos = [node position]; [node setPosition: ccpAdd(currentPos, diff)]; } But, only touches in the text are recognized and touch of sprite is not recognized ? How can I differentiate the two touches.

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  • How to create two columns on a web page?

    - by Roman
    I want to have two columns on my web page. For me the simples way to do that is to use a table: <table> <tr> <td> Content of the first column. </td> <td> Content of the second column. </td> </tr> </table> I like this solution because, first of all, it works (it gives exactly what I want), it is also really simple and stable (I will always have two columns, no matter how big is my window). It is easy to control the size and position of the table. However, I know that people do not like the table-layout and, as far as I know, they use div and css instead. So, I would like also to try this approach. Can anybody help me with that? I would like to have a simple solution (without tricks) that is easy to remember. It also needs to be stable (so that it will not accidentally happen that one column is under another one or they overlap or something like that).

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  • How to structure code with 2 methods, one after another, which throw the same two exceptions?

    - by dotnetdev
    Hi, I have two methods, one called straight after another, which both throw the exact same 2 exceptions (IF an erroneous condition occurs, not stating that I'm getting exceptions). For this, should I write seperate try and catch blocks with the one statement in each try block and catch both exceptions (Both of which I can handle as I checked MSDN class library reference and there is something I can do, eg, re-open SqlConnection or run a query and not a stored proc which does not exist). So code like this: try { obj.Open(); } catch (SqlException) { // Take action here. } catch (InvalidOperationException) { // Take action here. } And likewise for the other method I call straight after. This seems like a very messy way of coding. The other way is to code with the exception variable (that is ommited as I am using AOP to log the exception details, using a class-level attribute). Doing this, this could aid me in finding out which method caused an exception and then taking action accordingly. Is this the best approach or is there another best practise altogether? I also assume that, as only these two methods are thrown, I do not need to catch Exception as that would be for an exception I cannot handle (causes way out of my control). Thanks

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  • How to synchronize two (or n) replication processes for SQL Server databases?

    - by Yauheni Sivukha
    There are two master databases and two read-only copies updated by standard transactional replication. It is needed to map some entity from both read-only databases, lets say that A databases contains orders and B databases contains lines. The problem is that replication to one database can lag behind replication of second database, and at the moment of mapping R-databases will have inconsistent data. For example. We stored 2 orders with lines at 19:00 and 19:03. Mapping process started at 19:05, but to the moment of mapping A database replication processed all changes up to 19:03, but B database replication processed only changes up to 19:00. After mapping we will have order entity with order as of 19:03 and lines as of 19:00. The troubles are guaranteed:) In my particular case both databases have temporal model, so it is possible to fetch data for every time slice, but the problem is to identify time of latest replication. Question: How to synchronize replication processes for several databases to avoid situation described above? Or, in other words, how to compare last time of replication in each database? UPD: The only way I see to synchronize is to continuously write timestamps into service tables in each database and to check these timestamps on replicated servers. Is that acceptable solution?

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  • What is the best way to add two strings together?

    - by Pim Jager
    I read somewehere (I thought on codinghorror) that it is bad practice to add strings together as if they are numbers, since like numbers, strings cannot be changed. Thus, adding them together creates a new string. So, I was wondering, what is the best way to add two strings together, when focusing on performance? Which of these four is better, or is there another way which is better? //Note that normally at least one of these two strings is variable $str1 = 'Hello '; $str2 = 'World!'; $output1 = $str1.$str2; //This is said to be bad $str1 = 'Hello '; $output2 = $str1.'World!'; //Also bad $str1 = 'Hello'; $str2 = 'World!'; $output3 = sprintf('%s %s', $str1, $str2); //Good? //This last one is probaply more common as: //$output = sprintf('%s %s', 'Hello', 'World!'); $str1 = 'Hello '; $str2 = '{a}World!'; $output4 = str_replace('{a}', $str1, $str2); Does it even matter?

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  • [C#] How do I make hierarchy of objects from two alternating classes?

    - by Millicent
    Here's the scenario: I have two classes ("Page" and "Field"), that are descended from a common class ("Pield"). They represent tags in an XML file and are in the following hierarchy: <page> <field> <page> ... </page> ... </field> ... </page> I.e.: Page and Field objects are in a hierarchy of alternating type (there may be more than one Page or Field to each rung of the hierarchy). Every Field and Page object has a parent property, which points to the respective parent object of the other type. This is not a problem unless the parent-child mechanism is controlled by the base class (Pield), which is shared by the two descended classes (Page and Field). Here is one try, that fails at the line "Pield child = new Pield(pchild, this);": class Pield<T> { private T _pield_parent; ... private void get_children() { ... Pield<Page> child = new Pield<Page>(pchild, this); ... } ... } class Page : Pield<Field> { ... } class Field : Pield<Page> { ... } Any ideas about how to solve this elegantly? Best, Millicent

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  • Merge functionality of two xsl files into a single file (not a xsl import or include issue)

    - by anuamb
    I have two xsl files; both of them perform different tasks on source xml one after another. Now I need a single xsl file which will actually perform both these tasks in single file (its not an issue of xsl import or xsl include): say my source xml is: <LIST_R7P1_1 <R7P1_1 <LVL2 <ORIG_EXP_PRE_CONV#+# <EXP_AFT_CONVabc <GUARANTEE_AMOUNT#+# <CREDIT_DER/ </LVL2 <LVL21 <AZ#+# <BZbz1 <AZaz2 <BZ#+# <CZ/ </LVL21 </R7P1_1 </LIST_R7P1_1 My first xsl (tr1.xsl) removes all nodes whose value is blank or null: <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:template match="@*|node()"> <xsl:if test=". != '' or ./@* != ''"> <xsl:copy> <xsl:apply-templates select="@*|node()"/> </xsl:copy> </xsl:if> <xsl:template </xsl:stylesheet The output here is <LIST_R7P1_1 <R7P1_1 <LVL2 <ORIG_EXP_PRE_CONV#+# <EXP_AFT_CONVabc <GUARANTEE_AMOUNT#+# </LVL2 <LVL21 <AZ#+# <BZbz1 <AZaz2 <BZ#+# </LVL21 </R7P1_1 </LIST_R7P1_1 And my second xsl (tr2.xsl) does a global replace (of #+# with text blank'') on the output of first xsl: <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0" <xsl:template name="globalReplace" <xsl:param name="outputString"/ <xsl:param name="target"/ <xsl:param name="replacement"/ <xsl:choose <xsl:when test="contains($outputString,$target)"> <xsl:value-of select= "concat(substring-before($outputString,$target), $replacement)"/> <xsl:call-template name="globalReplace"> <xsl:with-param name="outputString" select="substring-after($outputString,$target)"/> <xsl:with-param name="target" select="$target"/> <xsl:with-param name="replacement" select="$replacement"/> </xsl:call-template> </xsl:when> <xsl:otherwise> <xsl:value-of select="$outputString"/> </xsl:otherwise> </xsl:choose </xsl:template <xsl:template match="text()" <xsl:template match="@*|*"> <xsl:copy> <xsl:apply-templates select="@*|node()"/> </xsl:copy> </xsl:template> </xsl:stylesheet So my final output is <LIST_R7P1_1 <R7P1_1 <LVL2 <ORIG_EXP_PRE_CONV <EXP_AFT_CONVabc <GUARANTEE_AMOUNT </LVL2 <LVL21 <AZ <BZbz1 <AZaz2 <BZ </LVL21 </R7P1_1 </LIST_R7P1_1 My concern is that instead of these two xsl (tr1.xsl and tr2.xsl) I only need a single xsl (tr.xsl) which gives me final output? Say when I combine these two as <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" <xsl:template match="@*|node()" <xsl:if test=". != '' or ./@* != ''"> <xsl:copy> <xsl:apply-templates select="@*|node()"/> </xsl:copy> </xsl:if> <xsl:template name="globalReplace" <xsl:param name="outputString"/ <xsl:param name="target"/ <xsl:param name="replacement"/ <xsl:choose <xsl:when test="contains($outputString,$target)"> <xsl:value-of select= "concat(substring-before($outputString,$target), $replacement)"/> <xsl:call-template name="globalReplace"> <xsl:with-param name="outputString" select="substring-after($outputString,$target)"/> <xsl:with-param name="target" select="$target"/> <xsl:with-param name="replacement" select="$replacement"/> </xsl:call-template> </xsl:when> <xsl:otherwise> <xsl:value-of select="$outputString"/> </xsl:otherwise> </xsl:choose </xsl:template <xsl:template match="text()" <xsl:call-template name="globalReplace" <xsl:with-param name="outputString" select="."/ <xsl:with-param name="target" select="'#+#'"/ <xsl:with-param name="replacement" select="''"/ </xsl:call-template </xsl:template <xsl:template match="@|" <xsl:copy <xsl:apply-templates select="@*|node()"/ </xsl:copy </xsl:template </xsl:stylesheet it outputs: <LIST_R7P1_1 <R7P1_1 <LVL2 <ORIG_EXP_PRE_CONV <EXP_AFT_CONVabc <GUARANTEE_AMOUNT <CREDIT_DER/ </LVL2 <LVL21 <AZ <BZbz1 <AZaz2 <BZ <CZ/ </LVL21 </R7P1_1 </LIST_R7P1_1 Only replacement is performed but not null/blank node removal.

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  • Is yield break equivalent to returning Enumerable<T>.Empty from a method returning IEnumerable<T>

    - by Mike Two
    These two methods appear to behave the same to me public IEnumerable<string> GetNothing() { return Enumerable.Empty<string>(); } public IEnumerable<string> GetLessThanNothing() { yield break; } I've profiled each in test scenarios and I don't see a meaningful difference in speed, but the yield break version is slightly faster. Are there any reasons to use one over the other? Is one easier to read than the other? Is there a behavior difference that would matter to a caller?

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  • What is the difference between these two nloglog(n) sorting algorithms? (Andersson et al., 1995 vs.

    - by Yktula
    Swanepoel's comment here lead me to this paper. Then, searching for an implementation in C, I came across this, which referenced another paper on an algorithm described here. Both papers describe integer sorting algorithms that run in O(nloglog(n)) time. What is the difference between the two? Have there been any more recent findings about this topic? Andersson et al., 1995 Han, 2004

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  • How to count differences between two files on linux?

    - by Zsolt Botykai
    Hi all, I need to work with large files and must find differences between two. And I don't need the different bits, but the number of differences. For the differ rows I come up with diff --suppress-common-lines --speed-large-files -y File1 File2 | wc -l And it works, but is there a better way to do it? And how to count the exact number of differences (with standard tools like bash, diff, awk, sed some old version of perl)? Thanks in advance

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  • Ruby on Rails: How do I remove a gem path? (I have two for some reason)

    - by sjsc
    I'm looking to remove a gem path (/home/sjsc/.ge/ruby/1.8). For some reason, I have two, and I can't seem to install gems correctly. When I do "gem env", here's what I get: RubyGems Environment: - RUBYGEMS VERSION: 1.3.6 - RUBY VERSION: 1.8.7 (2009-06-12 patchlevel 174) [i486-linux] - INSTALLATION DIRECTORY: /usr/lib/ruby/gems/1.8 - RUBY EXECUTABLE: /usr/bin/ruby1.8 - EXECUTABLE DIRECTORY: /usr/bin - RUBYGEMS PLATFORMS: - ruby - x86-linux - GEM PATHS: - /usr/lib/ruby/gems/1.8 - /home/sjsc/.gem/ruby/1.8 Any idea on how to remove the "/home/sjsc/.gem/ruby/1.8" from the "GEM PATHS"?

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  • CSS: How to get two DIVs side by side with automatic height, to the height of their container?

    - by Jake Petroules
    I am designing a website for a client, and I am trying to get two side-by-side DIVs to adjust to 100% of their container. I've got the side-by-side done, but I can't get the right DIV to be the same height as the left one. You can view the problem here: http://campusmomlaundry.petroules.com/ The "challenges" and "benefits" DIVs should be side-by-side and the same height, without manually specifying the height. How can I do this?

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  • How can two eclipse plugin use the same preferences store?

    - by St.Shadow
    I have two plugins, say com.site.plugin.core and com.site.plugin.ui. I'd like to separate core part from UI part, so at plugin com.site.plugin.ui I created Preferences page where I defined some preferences, which should be used by com.site.plugin.core. I check article at Eclipse site, but it is quite outdated, and linked bug also do not provide much info. So is it possible to do this using standard Eclipse mechanism, or I need use direct low-level API via package org.eclipse.core.runtime.preferences?

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