public DynamicDatatypeLibraryFactory(string dir, string mask)
{
string[] fileNames = Directory.GetFiles(dir, mask);
plugins = new DatatypeLibraryFactory[fileNames.Length];
int idx = 0;
// load assembly files
foreach (string name in fileNames)
{
try
{
AssemblyName n = new AssemblyName();
n.CodeBase = name;
Assembly a = Assembly.Load(n);
plugins[idx++] = (DatatypeLibraryFactory)Activator.CreateInstance(
a.GetType("DatatypeLibraryFactoryImpl"));
}
catch (Exception) {} // ignore this plug-in and proceed to next
}
}
private static Datatype[] createDatatypes( DatatypeLibraryFactory factory, object[] encodedDatatypes )
{
Datatype[] datatypes = new Datatype[encodedDatatypes.Length/3];
for( int i=0; i<datatypes.Length; i++ ) {
datatypes[i] = createDatatype( factory,
(string)encodedDatatypes[i*3],
(string)encodedDatatypes[i*3+1],
(object[])encodedDatatypes[i*3+2] );
}
return datatypes;
}
private static Datatype createDatatype( DatatypeLibraryFactory factory,
string nsUri, string localName, object[] parameters)
{
if( nsUri.Length==0 ) {
// since those parameters were compiled, we don't need to check the error.
if( localName[0]=='t' ) return TokenType.theInstance;
else return StringType.theInstance;
}
DatatypeLibrary lib = factory.CreateDatatypeLibrary(nsUri);
if(lib==null)
throw new DatatypeException("unable to locate a datatype library for "+nsUri);
DatatypeBuilder builder = lib.CreateDatatypeBuilder(localName);
for( int i=0; i<parameters.Length; i+=3 ) {
ValidationContext context = createContext( (string[])parameters[i+2] );
builder.AddParameter(
(string)parameters[i],
(string)parameters[i+1],
context );
}
return builder.CreateDatatype();
}
public Schema(
string nameLiterals,
int defaultNameCode,
string encStates,
string encATr,
string encDTr,
string encETr,
string encITr,
string encLTr,
string encNTr,
string encVTr,
object[] encDatatypes,
object[] values,
DatatypeLibraryFactory datatypeFactory)
: this(nameLiterals, defaultNameCode, encStates,
encATr, encDTr, encETr, encITr, encLTr, encNTr, encVTr,
createDatatypes( datatypeFactory, encDatatypes ),
values)
{
}
