Browse a directory in Velocity

[adminlazcool]

Hello,
I am trying to write templates in VTL to generate java classes with telosys. My starting point is a directory (src/main/resources/templates/es) that contains json files (mapping1.json, mapping2.json). I have to generate several java classes per json files. I have already write a template for each java classe that i have to generate. But these templates work with a static embedded json object. This an example:

`
#set($json = {
"template":"acces_formation",
"mappings":{
"data":{
"properties":{
"MATRICULE":{
"type":"string",
"index":"not_analyzed"
},
"NOM":{
"type":"string",
"index":"not_analyzed"
},
"DATE_NAIS":{
"type":"date",
"format":"dd/MM/yyyy"
},
"SEXE":{
"type":"string",
"index":"not_analyzed"
},
"GRADE":{
"type":"string",
"index":"not_analyzed"
}
}
}
}
})
#macro(javaName $s)$s.substring(0,1).toUpperCase()$s.substring(1)#end
#macro(setter $s)set#javaName($s)#end
#macro(getter $s)get#javaName($s)#end
########################################start macro toCamelCase
#macro(toCamelCase $s)
#set($datas = $s.split("_"))
#set($name = "")
#foreach($data in $datas)
#set($data = $data.substring(0,1).toUpperCase()+$data.substring(1))
#set($name = $name+$data)
#end
$name##
#end
#######################################End macro toCamelCase
#######################################Start macro #tab
#macro(tab $nbreTotal)
#if($nbreTotal >= 1)
#foreach($nbre in [1..$nbreTotal])
##
#end
#end
#end
#######################################End macro #tab
#######################################Start macro javaType
#macro(javaType $f, $nbreTab)
#if($f.equals("string"))
#tab($nbreTab)String##
#elseif($f.equals("boolean"))
#tab($nbreTab)Boolean##
#elseif($f.equals("long"))
#tab($nbreTab)Long##
#elseif($f.equals("float"))
#tab($nbreTab)Float##
#elseif($f.equals("double"))
#tab($nbreTab)Double##
#elseif($f.equals("int"))
#tab($nbreTab)Integer##
#elseif($f.equals("integer"))
#tab($nbreTab)Integer##
#elseif($f.equals("date"))
#tab($nbreTab)String##
#elseif($f.equals("array"))
#tab($nbreTab)java.util.List<#javaType($f)>##
#else
#tab($nbreTab)$f##
#end
#end
#############################################End macro javaType
#############################################

#set($templateName = $json.template)
#set($entity = "#toCamelCase($json.template)")
#set($entityDto = $entity+"Dto")
#set($param = "_param")

/*

• Java dto for elasticSearch template $templateName
• Created on $today.date ( Time $today.time )
• Generator tool : $generator.name ( version $generator.version )
  */

package ${target.javaPackageFromFolder(${SRC})};

import java.util.Date;
import ${ROOT_PKG}.helper.contract.SearchParam;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;
import com.fasterxml.jackson.databind.PropertyNamingStrategy;
import com.fasterxml.jackson.databind.annotation.JsonNaming;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;
import lombok.ToString;

/**

• DTO for elasticSearch template "$templateName"
• @author Lazare yao

*/
@JsonInclude(JsonInclude.Include.NON_NULL)
@JsonPropertyOrder(alphabetic = true)
@Getter
@Setter
@NoArgsConstructor
@tostring

public class $entityDto implements Cloneable {
#set($properties = $json.mappings.data.properties)
private String#tab(3)_id;

#foreach($key in $properties.keySet())
#set($field = $key.toLowerCase())
#tab(1)private #javaType($properties.get($key).type,0)#tab(3)$field ;
#end

private SearchParam<String>#tab(3)_id$param;

#foreach($key in $properties.keySet())
#set($field = $key.toLowerCase())
#tab(1)private SearchParam<#javaType($properties.get($key).type,0)&gt;#tab(3)${field}$param;
#end

private String orderDirection;
private String orderField;

}
`
What i need now is to browse my json directory, get each json file and apply the template on that json to create a java classe.
Thank you for helping me please !

[l-gu]

If you want to browse a directory you'll have to create a specific Java class to do that. A Java class can be used in a template with "$loader".
See "$loader" doc here : http://www.telosys.org/templates-doc/objects/loader.html

[adminlazcool]

Hi, OK. I can browse the directory. I used apache-commons-io.jar. Now i have to generate the java classes per each json file. But I'm having problems. Please see my comment and help me here:
https://stackoverflow.com/questions/55377622/browse-a-directory-in-velocity-template-language-with-telosys#comment98042139_55436632