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/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.tuscany.sdo.util;
import java.util.Comparator;
import javax.xml.XMLConstants;
import javax.xml.namespace.NamespaceContext;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamReader;
import org.apache.tuscany.sdo.util.resource.RecordedEventXMLStreamReader;
import org.eclipse.emf.ecore.EDataType;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.ecore.util.ExtendedMetaData;
import org.eclipse.emf.ecore.xmi.XMLResource;
import org.eclipse.emf.ecore.xml.type.internal.QName;
/**
* StAX Deserializer. The instance isn't thread-safe, however it's safe to use the instance any times on the same thread.
*/
public class StreamDeserializer implements XMLStreamConstants {
protected XMLStreamReader reader;
protected final XMLStreamReader play(RecordedEventXMLStreamReader.Tag tag) {
return tag.play(reader);
}
protected String nameSpace, name;
protected final boolean typedXSI() {
name = reader.getAttributeValue(ExtendedMetaData.XSI_URI, XMLResource.TYPE);
if (name == null)
return false;
int index = name.indexOf(':');
if (index == -1)
nameSpace = reader.getNamespaceURI(XMLConstants.DEFAULT_NS_PREFIX); // may be XMLConstants.NULL_NS_URI
else {
nameSpace = reader.getNamespaceURI(name.substring(0, index));
name = name.substring(++index);
}
return true;
}
static protected Object value(Object type, String literal, NamespaceContext nameSpaces) {
Object value = EcoreUtil.createFromString((EDataType) type, literal);
if (!(value instanceof QName))
return value;
QName qName = (QName) value;
qName.setNamespaceURI(nameSpaces.getNamespaceURI(qName.getPrefix()));
return value;
}
static public class Attribute {
public String name, value;
}
static public final class QualifiedAttribute extends Attribute {
public String nameSpace;
}
static protected final Comparator EQUAL_NULL = new Comparator() {
public int compare(Object v, Object NULL) {
return v == null || v.equals(null) ? 0 : 1;
}
}, EQUAL = new Comparator() {
public int compare(Object v, Object value) {
return value.equals(v) ? 0 : -1;
}
}, SAME = new Comparator() {
public int compare(Object v, Object value) {
return value == v ? 0 : -1;
}
};
}
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