I want to start dabbling in Perl 6. A large percentage of my programming involves SQLite databases. It looks like work has been put into using SQLite in Perl 6, but most of the info I can find is old and vague.
I see a "perl6-sqlite" module here, but it's marked as [old] and has very little to it. I've also seen references to a new DBI based on something to do with Java, but most of that talk is from last year and it's unclear whether there's something that works.
So is there currently an accepted way to use SQLite within Perl 6?
(Updated 2015-01): DBIish from https://github.com/perl6/DBIish/ has decent support for SQLite and PostgreSQL, and limited support for mysql.
The README shows how to use it with an SQLite backend.
Related
What would be the best approach to replace placeholders in a .docx document (Word 2010) with data coming from a MySQL database?
Can I just open the file using a server side language and do a string replace per each placeholder?
Is there any existing tool/library available?
Thanks
Disclosure: I work for Invantive.
Using Invantive Composition (http://www.invantive.com/products/invantive-composition) you can fill Word documents (letters, legal pleadings, insurancy policies) with data from a database (IBM DB2, Oracle, MySQL, Teradata and SQL Server) and then fully change the contents at will manually. It is intended for real Microsoft Word end-users (both the guys that make the template and the ones that use it) that access the databases through a central webservice and models with queries. Invantive Composition allows nested repeating groups of data and lay-out. Integrates into Microsoft Word using click once.
In the past, I personally have also been using JasperReports (http://community.jaspersoft.com/project/jasperreports-library) to generate letters using the RTF output target of JasperReports. It is free and works fine as long as you do not want to edit the output more than a few words and have Java/SQL development skills. Just as Invantive Composition it works fine for large numbers of different reports.
As long as you can control the environment completely, you can also consider using RTF as intermediate language (not for end-users, only real developers). Save document as RTF, replace parts of the text you need to be replacable, write a webservice that accepts the parameter and dumps back the resulting RTF. Takes some time to generate more complex tables (tables are obviously something invented by the human race after the RTF specification was written :-) This approach only works with very limited number of templates and when you have sufficient developer time available to get it up and running and stabilized.
As an independent reviewer, I have also seen cases where XML templates were used, but the results were not as good as with JasperReports.
**Disclosure: I lead the docx4j project **
There are heaps of existing tools/libraries available!
Yes, you can just do a string replace, but that is a brittle approach, since Word may have split the string across runs.
You can use MERGEFIELDs, or content control data binding.
docx4j supports all three approaches, but content control data binding is the most powerful.
ContentControlsMergeXML
MERGEFIELDs
VariableReplace
One thing to consider especially is "repeats". If you want say a row of a table in Word, for each matching row in your MySQL table, then you need a way to make this happen.
docx4j does this with a "repeat" content control around the table row; whichever solution you choose, I'd make sure up front that it can handle repeats.
If you want to use PHP the most complete available solution is PHPDocX.
You may check in the tutorial how to substitute placeholder variables by data coming from any data source (like a MySQL DB).
In particular, you may populate table rows with an indefinite number of entries and you may delete whole blocks of the Word document depending on the data fed to the application or build dynamical Word charts.
You may check the available DEMO for a simple but quite illustrative example (its inner workings are explained in the tutorial section).
You can use open Open XML SDK and replace your placeholders like this.
Disclosure: I lead the docxgenjs project
I think you shouldn't have to code everything by yourself, that's why I created a Mustache-like templating engine for docx
Demo:
http://javascript-ninja.fr/docxgenjs/examples/demo.html
Repo
https://github.com/edi9999/docxgenjs
It is JS-based and works client and server side.
Yes, you can use server side language to do it.
Check on apache POI.
http://poi.apache.org
Hello I read the above esp the comments and Ivantive looks impressive - but the solution I needed was much simpler. Use Selection.Range.InsertDatabase in Word to fetch records from an access database or excel spreadsheet or even just another word document. With the access solution you can choose the layout of the records to fetch and have it fetch just particular recordds based on a field (eg ID). Google the words above and it'll take you to MS guidance and an example VB script. Worked well in just a few mins. Now looking for VB script that asks the person what ID they want from the dbase and we're done.
it uses docx templates that have merge fields with java objects (the objects have the information you load from mysql or any other source). The xdoc report is an project for java language, the home page of the project is https://code.google.com/p/xdocreport/.
*Disclosure: I create the templ4docx project *
Hello
You can use templ4docx java library, which is on maven central repository, so you can just add it to your maven dependencies:
<dependency>
<groupId>pl.jsolve</groupId>
<artifactId>templ4docx</artifactId>
<version>2.0.0</version>
</dependency>
Example usage:
Docx docx = new Docx("E:\\template.docx");
Variables variables = new Variables();
variables.addTextVariable(new TextVariable("${firstName}", "John"));
variables.addTextVariable(new TextVariable("${lastName}", "Sky"));
docx.fillTemplate(variables);
docx.save("E:\\filledTemplate.docx");
More details you can find here: http://jsolve.github.io/java/templ4docx/
I want a tool through which I can get the respective hive query by giving the PL/SQL query. There are lots of tools available which convert sql to hql. ie: taod for cloude database. But it does not show me the respective hive query.
Is there any such kind of tool whose convert given sql to hql. Please help me.
Thanks and Regards,
Ratan
Please take a look at open-source project PL/HQL at http://www.hplsql.org/ which is now a part of Hive 2.x or higher version. It allows you to run existing SQL Server, Oracle, Teradata, MySQL etc. stored procedures in Hive.
Ratan, I did not how to start responding. So, lets start like this. I think you checked toad and thinking like there is a tool to convert SQL to hive QL. I do not think there is such a tool.
Let me clarify like this, HIVE QL, is same as SQL. Check this links before you are trying to write some queries:
https://cwiki.apache.org/confluence/display/Hive/LanguageManual,
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF.
This is simple to understand if you know sql and simple to write (as you check the HIve ql).
Hive doesnot have many operators the sql supports. For example:
select * from sales where country like 'EU~%'; "HIVE SUPPORTS LIKE"
But try this negative queries as we write in SQL :
select * from sales where country not like 'EU~%'; "HIVE DOES NOT SUPPORT"
This is just one example, I remember. There are more like this. But to deal with these hive has many like "where not" etc.
If your question is does the Hive have any PL/SQL support. Straight answer is no. But, we can check the UDF in hive and also, the PIG on Hadoop.
I have been looking for SQLite bindings for OCaml. I stumbled upon ocaml-sqlite3 which looks good and current, but there is no documentation whatsoever about how to use it.
There is some very old documentation (API reference only) of an obsolete ocaml-sqlite binding that was discontinued in 2004. But it really doesn't look current and probably is already quite different from the updated version I found (listed in the above link).
I was just wondering if anybody has some documentation, examples or clue at all of how these libraries work. I could go through the code, but I'd like to keep that option as the last resource.
Howdy. The ocaml-sqlite3 library you mentioned does, in fact, have documention; you just have to build it with make doc. It's included in the comments in the .mli file as well; you can have a look here: http://hg.ocaml.info/release/ocaml-sqlite3/file/b28bff3ff215/sqlite3.mli . I realize it's basically just an API reference, but it looks fairly comprehensive.
In addition to phooji's answer, please note that the API follows closely the C sqlite library. Thus, any Sqlite book should help you to use the OCaml binding. And you are correct about which version to use; the one here: http://www.ocaml.info/home/ocaml_sources.html.
I'm currently looking at a terrible legacy ColdFusion app written with very few stored procedures and lots of nasty inline SQL statements (it has a similarly bad database too).
Does anyone know of any app which could be used to search the files of the app picking out any SQL statements and listing the tables/stored procedures which are referenced?
Dreamweaver will allow you to search the code of the entire site. If the site is setup properly including the RDS password and provide a data source it can tell you a lot of information. I've only set it up once so I can't remember exactly what information it gives you, I think maybe just the DB structure. Application window > databases. Even if it isn't set up properly just searching for "cfquery" will quickly find all your queries.
You could also write a CF script using CFDirectory/CFFile to loop the .cfm files and parse everything between cfquery and /cfquery tags.
CFBuilder may have some features like that but I'm not to familiar with it yet.
edit I've heard that CFBuilder can't natively find all your cfqueries that don't have cfqueryparam but you can use CF to extend CFB to do so. I imagine you could find/write something for CFB to help you with your problem.
another edit
I know it isn't indexing the contents of the query, but you can use regex to search using the editor as well. searching for <cfquery.+(select|insert|update|delete) checking the regex box should find the queries that aren't using cfstoredProc (be sure to uncheck the match case option if there is one). I know Dreamweaver and Eclipse can both search for Regex.
HTH
As mentioned above I would try a grep with a regex looking for
"<cfquery*" "</cfquery>" and "<cfstoredproc*" "</cfstoredproc>"
In addition if you have tests that have good code coverage or even just feel like the app is fully exercised in production you could try turning on "Log Database Calls" in Admin - > Datasources or maybe even at the JDBC driver level, just monitor performance to make sure it does not slow the site down unacceptably.
In short: no. You'd have to do alot of tricky parsing to make sure you get all the SQL. And because you can glob SQL together from lots of strings, you'll almost always miss some of it.
The best you're likely to do will be a case insensitive grep for "SELECT|INSERT|UPDATE|DELETE" and then manually pulling out the table names.
Depending on how the code is structured, you might be able to get the table names by regexing the SQL from clause. But that's not foolproof. Alot of people use string concatenation to build SQL statements. This is bad because it can introduce SQL injection attacks, and it also make this particular problem harder.
I want to use SQLite within my MFC application.
for that, i'll create an object whose job is to interact directly with the DB(SQLite) to insulate the rest of the app from the DB code.
can anyone point me to a good tutorial ?
i'll need operations such as (create,delete,insert,update,createdb,dropdb and so on...)
Thanks.
There's a page in the SQLite site that lists many available wrappers - here. The C++ wrapper Daniel mentions in his answer is probably the most common one, though it does not support Unicode and the SQLite dll that comes with it is quite dated. There's a Unicode version of that wrapper here, but it's a bit buggy and requires some more work. It could, however, save you the trouble of writing the whole thing from scratch.
Have a look at this. This was really easy to port to MFC classes, but it will get you started.
http://www.codeproject.com/KB/database/CppSQLite.aspx
Or you can just do #include "sqlite3.h", add sqlite3.lib to your linker and use sqlite3.dll directly with the C api. That's what I did in my MFC app.
And you can even statically link sqlite3 into your app. Download the amalgamation and include it! It adds about 400 k.
Please define your problem more clearly.
sqlite can be coding with c, and you can read the sample in their site.