Casting Cf struct in Hashtable Java

[ik1hsr]

Hi;
i need to convert a Coldfusion Struct in a Java Hashtable (as th CFMX manual tell);
I have this java class:


public class Pratica {
private java.util.Hashtable my;
public Pratica(){
my=null;
}
public Pratica(java.util.Hashtable dbprop){
my=dbprop;
}
public void set(java.util.Hashtable dbprop){
my=dbprop;
}

}

and in the CF page i have this code:

<cfset ma = createObject("java","java.util.Hashtable")>
<cfset ma.init(glb)> // glb is a struct

<cfobject action="CREATE" type="JAVA" class="Pratica" name="pra">
<cfset pra.init(ma)>

but when i run...:
"Unable to find a constructor for class Pratica that accepts parameters of type ( java.util.Hashtable )."

I'm waiting your suggestions!!!
thanks to all


Andrea
ps:sorry for my english.

[insuractive]

There does not seem to be a constructur for Hashtable that accepts a CF structure as a parameter. Take a look at the java documentation:

http://java.sun.com/j2se/1.4.2/docs/api/java/util/Hashtable.html#Hashtable(int,%20float)

Given, I haven't tried to go from CF struct to hashtable before - could you do something like this?

1) Initialize an empty Hashtable
<cfset myHashTable= createObject("java","java.util.Hashtable")>
<cfset myHashTable.init()>

2) loop over the CF structure collection and call the Hashtable's put() method to populate the hashtable
<cfloop collection="#glb#" item="key">
<cfset myHashTable.put(key, glb[key])>
</cfloop>

[ik1hsr]

Thanks for the help
now all it works
bye

[cf_dev2]

ik1hsr,

In MX6/7 a ColdFusion Struct is a Hashtable. So you don't need to create a new one. Just pass in the CF Struct object.

Java Class:

public class Pratica {
private java.util.Hashtable my;
public Pratica(){
my=null;
}
public Pratica(java.util.Hashtable dbprop){
my=dbprop;
}
public void set(java.util.Hashtable dbprop){
my=dbprop;
}

public String getKeyValue(Object key) {
if (my != null) {
return my.get(key).toString();
}
return "";
}
}


ColdFusion Code:

<cfset theKey = "abc" />
<cfset cfStruct = structNew()>
<cfset cfStruct[theKey] = "abc" />
<cfset pra = createObject("java", "Pratica").init(cfStruct) />
<cfoutput>#theKey# value = #pra.getKeyValue(theKey)#</cfoutput>

[Guest]

cf_dev2, Thanks for that!  Picky syntax was holding me up 'till I found your specific example, so thanks!