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Posted to user@commons.apache.org by Alfonso Via-Reque <av...@yahoo.com.INVALID> on 2017/01/19 04:26:57 UTC
Read file into POJO
Hello Commons Users,
I'm looking for a way to read files directly into POJOs. The idea is that the file layout would be defined in an "properties"-type file (XML or something). The layout could be delimited or fixed-width, with the layout file defining the columns and which POJO member variable they should be set to.
For example, a file might be tilde (~) delimited and follow this layout:ID~first name~last name~age~address~city~state~zip
I'd like to read it into a class:
public class Person { private Integer id;
private String firstName;
private String lastName; private Integer age; private String address; private String city;
private String state;
private String zip;
// Getters and Setters ...
}
Is there a tool that do this?
ThanksAlfonso
Re: Read file into POJO
Posted by Gary Gregory <ga...@gmail.com>.
JAXB is included in Java.
Gary
On Wed, Jan 18, 2017 at 8:26 PM, Alfonso Via-Reque <
aviareq@yahoo.com.invalid> wrote:
> Hello Commons Users,
> I'm looking for a way to read files directly into POJOs. The idea is that
> the file layout would be defined in an "properties"-type file (XML or
> something). The layout could be delimited or fixed-width, with the layout
> file defining the columns and which POJO member variable they should be set
> to.
> For example, a file might be tilde (~) delimited and follow this
> layout:ID~first name~last name~age~address~city~state~zip
>
>
> I'd like to read it into a class:
> public class Person { private Integer id;
> private String firstName;
> private String lastName; private Integer age; private String
> address; private String city;
> private String state;
> private String zip;
>
> // Getters and Setters ...
> }
>
> Is there a tool that do this?
>
>
> ThanksAlfonso
--
E-Mail: garydgregory@gmail.com | ggregory@apache.org
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Re: Read file into POJO
Posted by Alfonso Via-Reque <av...@yahoo.com.INVALID>.
Thank you and Grazie to all that replied!
From: Greg Thomas <gr...@gmail.com>
To: Commons Users List <us...@commons.apache.org>; Alfonso Via-Reque <av...@yahoo.com>
Sent: Thursday, January 19, 2017 2:31 AM
Subject: Re: Read file into POJO
It's not an Apache project, but Gestalt @ https://github.com/tonybaines/gestalt dos exactly that. You define a Java interface, and Gestalt will create an object that implements interface based on the contents of a .xml or .properties file.
Greg
On 19 January 2017 at 04:26, Alfonso Via-Reque <av...@yahoo.com.invalid> wrote:
Hello Commons Users,
I'm looking for a way to read files directly into POJOs. The idea is that the file layout would be defined in an "properties"-type file (XML or something). The layout could be delimited or fixed-width, with the layout file defining the columns and which POJO member variable they should be set to.
For example, a file might be tilde (~) delimited and follow this layout:ID~first name~last name~age~address~city~state~ zip
I'd like to read it into a class:
public class Person { private Integer id;
private String firstName;
private String lastName; private Integer age; private String address; private String city;
private String state;
private String zip;
// Getters and Setters ...
}
Is there a tool that do this?
ThanksAlfonso
Re: Read file into POJO
Posted by Greg Thomas <gr...@gmail.com>.
It's not an Apache project, but Gestalt @
https://github.com/tonybaines/gestalt dos exactly that. You define a Java
interface, and Gestalt will create an object that implements interface
based on the contents of a .xml or .properties file.
Greg
On 19 January 2017 at 04:26, Alfonso Via-Reque <av...@yahoo.com.invalid>
wrote:
> Hello Commons Users,
> I'm looking for a way to read files directly into POJOs. The idea is that
> the file layout would be defined in an "properties"-type file (XML or
> something). The layout could be delimited or fixed-width, with the layout
> file defining the columns and which POJO member variable they should be set
> to.
> For example, a file might be tilde (~) delimited and follow this
> layout:ID~first name~last name~age~address~city~state~zip
>
>
> I'd like to read it into a class:
> public class Person { private Integer id;
> private String firstName;
> private String lastName; private Integer age; private String
> address; private String city;
> private String state;
> private String zip;
>
> // Getters and Setters ...
> }
>
> Is there a tool that do this?
>
>
> ThanksAlfonso
Re: Read file into POJO
Posted by MASTRELLA STEFANO <sm...@sogei.it>.
Hi Alfonso,
> -----Original Message-----
> From: Alfonso Via-Reque
> [mailto:aviareq@yahoo.com.INVALID]
> Sent: Thursday, January 19, 2017 5:27 AM
> To: user@commons.apache.org
> Subject: Read file into POJO
>
> Hello Commons Users,
> I'm looking for a way to read files directly into POJOs. The
> idea is that the file layout would be defined in an
> "properties"-type file (XML or something). The layout
> could be delimited or fixed-width, with the layout file
> defining the columns and which POJO member variable
> they should be set to.
> For example, a file might be tilde (~) delimited and follow
> this layout:ID~first name~last
> name~age~address~city~state~zip
On how to define the layout you can use:
- XML, you can rely on Commons Configuration
- ~ delimeted, rely on standard Java class FileInputReader
and StringTokenizer
> I'd like to read it into a class:
> public class Person { private Integer id;
> private String firstName;
> private String lastName; private Integer age; private
> String address; private String city;
> private String state;
> private String zip;
>
> // Getters and Setters ...
> }
>
> Is there a tool that do this?
take a look at Apache Commons BeanUtils
http://commons.apache.org/proper/commons-beanutils/
as stated in the user guide
http://commons.apache.org/proper/commons-beanutils/javadocs/v1.9.3/apidocs/org/apache/commons/beanutils/package-summary.html#standard
you can access your accessor method via
PropertyUtils.getSimpleProperty(anIstanceOfPerson,"firstName")
>
> ThanksAlfonso
Hope it helps.
S.
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