flat-file | 易学教程

Converting Flat File to Java Objects [closed]

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问题 Does anybody know of any good libraries to convert a flat file to Java objects? I found flatworm but I am looking for alternatives. 回答1: FFP - Flat file parsing library http://jffp.sourceforge.net/ 回答2: Quick update: flatworm has not been active for quite a while, there is a fork named BeanIO: http://www.beanio.org/ 回答3: Another alternative, that I wrote that uses Java Annotations is JFileHelpers - http://jfilehelpers.com An example of annotated bean: @FixedLengthRecord() public class

SSIS reading LF as terminator when its set as CRLF

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using SSIS 2012. My flat file connection manager I have a delimited file where the row delimiter is set to CRLF , but when it processes the file, I have a text column that has an LF in it. This is causing it to read that as a row terminator causing it fail. Any ideas? Before answering, i don't think that the column contains only LF because if the row delimiter is CRLF it will not consider it as delimiter. So it is probably CRLF , but i will give a solution for the two cases (CRLF or LF) Solution You can fix this situation with the following steps: First in the Flat File connection manager add

How to import a fixed width flat file into database using SSIS?

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Does any one have a tutorial on how to import a fixed width flat file into a database using an SSIS package? I have a flat file containing columns with varying lengths. Column name Width ----------- ----- First name 25 Last name 25 Id 9 Date 8 How do I convert a flat file into columns? Here is a sample package created using SSIS 2008 R2 that explains how to import a flat file into a database table. Create a fixed-width flat file named Fixed_Width_File.txt with data as shown in the screenshot. The screenshot uses Notepad++ to display the file contents. It has the capability to show the special

Why use MySQL over flatfiles?

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问题 A friend and I were debating about whether he should use MySQL or a flatfile database for his website's backend. I told him to go with MySQL because it was structured, held records well, and was consistent. He on the other hand said that he would rather go for speed. Reading files is a lot quicker than connecting to MySQL and it made me wonder whether he was right. For example, why not just create a folder for each table, like so: users/ groups/ posts/ , within the folders have the files

escaping tricky string to CSV format

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问题 I have to create a CSV file from webservice output and the CSV file uses quoted strings with comma separator. I cannot change the format ... So if I have a string it becomes a "string" ... If the value has quotes already they are replaced with double quotes. For example a str"ing becomes "str""ing" ... However, lately my import has been failing because of the following original input string is: "","word1,word2,..." every single quote is replaced by double resulting in: """",""word1,word2,..."

Is it faster to access data from files or a database server?

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问题 If I have a static database consisting of folders and files, would access and manipulation be faster than SQL server type databases, considering this would be used in a CGI script? When working with files and folders, what are the tricks to better performance? 回答1: I'll add to the it depends crowd. This is the kind of question that has no generic answer but is heavily dependent on the situation at hand. I even recently moved some data from a SQL database to a flat file system because the

How to import a fixed width flat file into database using SSIS?

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问题 Does any one have a tutorial on how to import a fixed width flat file into a database using an SSIS package? I have a flat file containing columns with varying lengths. Column name Width ----------- ----- First name 25 Last name 25 Id 9 Date 8 How do I convert a flat file into columns? 回答1: Here is a sample package created using SSIS 2008 R2 that explains how to import a flat file into a database table. Create a fixed-width flat file named Fixed_Width_File.txt with data as shown in the