Poppe, Troy wrote:
Assuming that I use the example XML document on the "XMLConfiguration HOWTO"
page
(see below), I have a question regarding the use of
Configuration.getProperties().
I'd like to get a List of Properties objects that represent the field nodes for
a
given table.
I started by trying to get a Properties object for one of the field nodes, but
was unable to.
Any examples for the use of getProperties or getList that might help me out
here?
Thanks.
Troy Poppe
The Example XML file:
<?xml version="1.0" encoding="ISO-8859-1" ?>
<database>
<tables>
<table tableType="system">
<name>users</name>
<fields>
<field>
<name>uid</name>
<type>long</type>
</field>
<field>
<name>uname</name>
<type>java.lang.String</type>
</field>
<field>
<name>firstName</name>
<type>java.lang.String</type>
</field>
<field>
<name>lastName</name>
<type>java.lang.String</type>
</field>
<field>
<name>email</name>
<type>java.lang.String</type>
</field>
</fields>
</table>
<table tableType="application">
<name>documents</name>
<fields>
<field>
<name>docid</name>
<type>long</type>
</field>
<field>
<name>name</name>
<type>java.lang.String</type>
</field>
<field>
<name>creationDate</name>
<type>java.util.Date</type>
</field>
<field>
<name>authorID</name>
<type>long</type>
</field>
<field>
<name>version</name>
<type>int</type>
</field>
</fields>
</table>
</tables>
</database>
I had a look at the getProperties() implementation (in
AbstractConfiguration), but it does not seem to be suitable for your
needs. AFICT it requires the property values to be queried in a form
like "key = value", so a supported XML would have to look something like
...
<fields>
<field>
<fielddata>name=uid</fielddata>
<fielddata>type=long</fielddata>
</field>
...
</fields>
...
Then it should be possible to do something like
Properties props =
config.getProperties("tables.table(0).fields.field(0).fielddata");
for obtaining a properties object with information about the first field
of the first table (however I didn't test this).
Using getList() allows you to query a single property value at a time
only. So you can fetch the names of all fields in a table (as shown in
the howtos), but you cannot retrieve a combination of the fields' names
and types (or further properties).
IIUYC you would like to do something like
Properties props = config.getProperties("tables.table.fields.field(0)");
and would obtain a Properties object with the keys "name" and "type" and
the values describing the first field, right? I am sorry, but this is
not supported ATM. And I am not sure whether it would be possible to
implement such a feature in a general and intuitive way: this would
require to parse a property's sub properties and somehow combine them?
Oliver
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
