org.fabric3.introspection.xml.definitions.IntentLoader Maven / Gradle / Ivy
/*
* Fabric3
* Copyright (c) 2009-2013 Metaform Systems
*
* Fabric3 is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version, with the
* following exception:
*
* Linking this software statically or dynamically with other
* modules is making a combined work based on this software.
* Thus, the terms and conditions of the GNU General Public
* License cover the whole combination.
*
* As a special exception, the copyright holders of this software
* give you permission to link this software with independent
* modules to produce an executable, regardless of the license
* terms of these independent modules, and to copy and distribute
* the resulting executable under terms of your choice, provided
* that you also meet, for each linked independent module, the
* terms and conditions of the license of that module. An
* independent module is a module which is not derived from or
* based on this software. If you modify this software, you may
* extend this exception to your version of the software, but
* you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version.
*
* Fabric3 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the
* GNU General Public License along with Fabric3.
* If not, see {
private static final QName QUALIFIER = new QName(Constants.SCA_NS, "qualifier");
private LoaderHelper helper;
public IntentLoader(@Reference LoaderHelper helper) {
this.helper = helper;
addAttributes("name", "constrains", "requires", "excludes", "intentType", "appliesTo", "mutuallyExclusive");
}
public Intent load(XMLStreamReader reader, IntrospectionContext context) throws XMLStreamException {
Location startLocation = reader.getLocation();
String name = reader.getAttributeValue(null, "name");
QName qName = LoaderUtil.getQName(name, context.getTargetNamespace(), reader.getNamespaceContext());
if (name != null && name.contains(".")) {
InvalidValue error = new InvalidValue("Profile intent names cannot contain a '.':" + qName, startLocation);
context.addError(error);
}
String constrainsVal = reader.getAttributeValue(null, "constrains");
QName constrains = null;
if (constrainsVal != null) {
try {
constrains = helper.createQName(constrainsVal, reader);
} catch (InvalidPrefixException e) {
String prefix = e.getPrefix();
URI uri = context.getContributionUri();
InvalidQNamePrefix failure =
new InvalidQNamePrefix("The prefix " + prefix + " specified in the definitions.xml file in contribution " + uri
+ " is invalid", startLocation);
context.addError(failure);
return null;
}
}
IntentType intentType = IntentType.INTERACTION;
String intentTypeVal = reader.getAttributeValue(null, "intentType");
if (intentTypeVal != null) {
try {
intentType = IntentType.valueOf(intentTypeVal.toUpperCase());
} catch (IllegalArgumentException e) {
UnrecognizedAttribute failure = new UnrecognizedAttribute("Unknown intentType value: " + intentTypeVal, startLocation);
context.addError(failure);
return null;
}
}
Set requires;
try {
requires = helper.parseListOfQNames(reader, "requires");
} catch (InvalidPrefixException e) {
String prefix = e.getPrefix();
URI uri = context.getContributionUri();
InvalidQNamePrefix failure =
new InvalidQNamePrefix("The requires prefix " + prefix + " specified in the definitions.xml file in contribution " + uri
+ " is invalid", startLocation);
context.addError(failure);
return null;
}
boolean mutuallyExclusive = Boolean.parseBoolean(reader.getAttributeValue(null, "mutuallyExclusive"));
Set excludes;
try {
excludes = helper.parseListOfQNames(reader, "excludes");
} catch (InvalidPrefixException e) {
String prefix = e.getPrefix();
URI uri = context.getContributionUri();
InvalidQNamePrefix failure =
new InvalidQNamePrefix("The excludes prefix " + prefix + " specified in the definitions.xml file in contribution " + uri
+ " is invalid", startLocation);
context.addError(failure);
return null;
}
Set qualifiers = new HashSet();
// create the intent before the qualifiers are populated so attributes can be validated
Intent intent = new Intent(qName, constrains, requires, qualifiers, mutuallyExclusive, excludes, intentType, false);
validateAttributes(reader, context, intent);
// populates the qualifiers
boolean defaultSet = false;
while (true) {
switch (reader.next()) {
case START_ELEMENT:
if (QUALIFIER.equals(reader.getName())) {
Location location = reader.getLocation();
String nameAttr = reader.getAttributeValue(null, "name");
if (nameAttr == null) {
context.addError(new MissingAttribute("Qualifier name not specified", location));
return null;
}
String defaultStr = reader.getAttributeValue(null, "default");
Boolean isDefault = Boolean.valueOf(defaultStr);
if (isDefault) {
if (defaultSet) {
DuplicateDefaultIntent error = new DuplicateDefaultIntent("More than one qualified intent is specified as the default " +
"for: " + qName, location, intent);
context.addError(error);
} else {
defaultSet = true;
}
}
Qualifier qualifier = new Qualifier(nameAttr, isDefault);
if (qualifiers.contains(qualifier)) {
DuplicateQualifiedName error =
new DuplicateQualifiedName("Duplicate qualified intent specified for:" + qName, location, intent);
context.addError(error);
} else {
qualifiers.add(qualifier);
}
}
break;
case END_ELEMENT:
if (DefinitionsLoader.INTENT.equals(reader.getName())) {
return new Intent(qName, constrains, requires, qualifiers, mutuallyExclusive, excludes, intentType, false);
}
}
}
}
}
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