Memory used when parsing an xml file...

[Paulo Pizarro]

I am using Xerces 1.6.0 and find that quite a bit of memory is used and 
retained when parsing an xml file.

The file I am using is about 500 Kbytes and running a short program that only 
parses the file the memory usage is about 12 MBytes. �This is in release mode 
and i need use DOM (IDOM).

Does this seem correct? �Should I be expected much greater memory efficiency? 
Does it make a difference with the depth of the elements in the tree?

The simple program I wrote to test this is as follows.

� � � � � � � � parser = new IDOMParser;
� � � � � � � � parser->setIncludeIgnorableWhitespace(false);
� � � � � � � � parser->setCreateEntityReferenceNodes(false);
� � � � � � � � //parser->setValidationConstrainFatal(true);
� � � � � � � � parser->setDoSchema(false);
� � � � � � � � parser->setValidationScheme(IDOMParser::Val_Auto);
� � � � � � � � parser->setValidationSchemaFullChecking(false);
� � � � � � � � parser->setDoNamespaces(false);

� � � � � � � � const char* xmlFile = "prefixos.xml";

� � � � � � � � parser->parse(xmlFile);

XML file example:

<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE tarifador [
 <!ELEMENT tarifador (prefixos+)>
 <!ATTLIST tarifador
           versao CDATA #REQUIRED>
 <!ELEMENT prefixos (p+)>
 <!ATTLIST prefixos
   area_tar_origem CDATA #REQUIRED>
 <!ELEMENT p EMPTY>
 <!ATTLIST p
        ID ID #REQUIRED
        d (00 | 01 | 02 | 03 | 04 | 0C | 10 | 30 | 50) "04"
        u (SC | RR | RO | PI | AP | AL | PB | SE | RN) "SP"
        r (1 | 2 | 3) "1"
        c (S | N) "N">
]>

<tarifador  versao="0.1">
        <prefixos area_tar_origem="482">
                <p ID="P11201" r="3" c="S"/>
                <p ID="P11202" r="3" c="S"/>
                <p ID="P11203" r="3" c="S"/>
                <p ID="P11204" r="3" c="S"/>
                <p ID="P11206" r="3" c="S"/>
                <p ID="P11209" r="3"/>
                <p ID="P11215" r="3" c="S"/>
                ...
                ... 18.000 elements
                ...
                <p ID="P11209" r="3"/>
                <p ID="P11215" r="3" c="S"/>
        </prefixos>
</tarifador>


Thanks in advance.

Best regards,

Paulo Pizarro

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