/**
* 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.cxf.binding.corba.types;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.xml.namespace.QName;
import org.apache.cxf.binding.corba.wsdl.CaseType;
import org.apache.cxf.binding.corba.wsdl.Enum;
import org.apache.cxf.binding.corba.wsdl.Enumerator;
import org.apache.cxf.binding.corba.wsdl.Union;
import org.apache.cxf.binding.corba.wsdl.Unionbranch;
import org.omg.CORBA.TCKind;
import org.omg.CORBA.TypeCode;
public class CorbaUnionHandler extends CorbaObjectHandler {
private CorbaObjectHandler discriminator;
private CorbaObjectHandler value;
private List<CorbaObjectHandler> cases = new ArrayList<CorbaObjectHandler>();
private int defaultIndex;
private List<String> labels = new ArrayList<String>();
public CorbaUnionHandler(QName unionName, QName unionIdlType, TypeCode unionTC, Object unionType) {
super(unionName, unionIdlType, unionTC, unionType);
// Build a list of labels. This will be used to generate a discriminator value for the
// default case (since we are not provided with one from the Stax stream of the Celtix object)
Union union = (Union)unionType;
List<Unionbranch> branches = union.getUnionbranch();
int index = 0;
for (Iterator<Unionbranch> branchesIter = branches.iterator(); branchesIter.hasNext();) {
Unionbranch branch = branchesIter.next();
List<CaseType> branchCases = branch.getCase();
if (branchCases.size() == 0) {
defaultIndex = index;
} else {
for (Iterator<CaseType> casesIter = branchCases.iterator(); casesIter.hasNext();) {
CaseType ct = casesIter.next();
labels.add(ct.getLabel());
}
}
index++;
}
}
public CorbaObjectHandler getDiscriminator() {
return discriminator;
}
public String getDisciminatorValueData() {
String result = null;
// The discriminator is handled by either the enum handler or the primitive handler.
if (discriminator.getTypeCodeKind().value() == TCKind._tk_enum) {
CorbaEnumHandler enumHandler = (CorbaEnumHandler)discriminator;
result = enumHandler.getValue();
} else {
CorbaPrimitiveHandler primitiveHandler = (CorbaPrimitiveHandler)discriminator;
result = primitiveHandler.getDataFromValue();
}
return result;
}
public void setDiscriminator(CorbaObjectHandler disc) {
discriminator = disc;
}
public void setDiscriminatorValueFromData(String data) {
// The discriminator is handled by either the enum handler or the primitive handler.
if (discriminator.getTypeCodeKind().value() == TCKind._tk_enum) {
CorbaEnumHandler enumHandler = (CorbaEnumHandler)discriminator;
enumHandler.setValue(data);
} else {
CorbaPrimitiveHandler primitiveHandler = (CorbaPrimitiveHandler)discriminator;
primitiveHandler.setValueFromData(data);
}
}
public List<CorbaObjectHandler> getCases() {
return cases;
}
public CorbaObjectHandler getBranchByName(String caseName) {
for (Iterator<CorbaObjectHandler> caseIter = cases.iterator(); caseIter.hasNext();) {
CorbaObjectHandler obj = caseIter.next();
if (obj.getName().getLocalPart().equals(caseName)) {
return obj;
}
}
return null;
}
public void addCase(CorbaObjectHandler unionCase) {
cases.add(unionCase);
}
public CorbaObjectHandler getValue() {
return value;
}
public void setValue(String caseName, CorbaObjectHandler val) {
value = val;
}
public int getDefaultIndex() {
return defaultIndex;
}
public String createDefaultDiscriminatorLabel() {
String label = null;
// According to the CORBA specification, an enumeration discriminator can be one of the
// following types:
// - *integer* (short, long, ulong, either signed or unsigned)
// - boolean
// - character
// - enumeration
// So when we need to create a default discriminator to accomodate for the lack of a
// discriminator from, these are the four cases we must check for.
if (discriminator.getTypeCodeKind().value() == TCKind._tk_boolean) {
// We can only have a default case with a boolean discriminator if we have
// only one case, either TRUE or FALSE. Therefore, we only need to check
// against the first label, if there is one.
if (labels.isEmpty()) {
label = "false";
} else {
boolean boolValue = Boolean.parseBoolean(labels.get(0));
label = String.valueOf(!boolValue);
}
} else if (discriminator.getTypeCodeKind().value() == TCKind._tk_char) {
if (labels.isEmpty()) {
label = String.valueOf('0');
} else {
char charValue = labels.get(0).charAt(0);
while (labels.contains(String.valueOf(charValue))) {
charValue++;
}
label = String.valueOf(charValue);
}
} else if (discriminator.getTypeCodeKind().value() == TCKind._tk_enum) {
// Get the list of possible enumerations in the enumerator and compare these to the
// labels we obtained from the Union definition. In order for the union/enum
// combination to be syntactically correct, there must be one enumeration not included
// as a case for the default case to be valid.
Enum enumType = (Enum)discriminator.getType();
List<Enumerator> enumerators = enumType.getEnumerator();
if (labels.isEmpty()) {
// Any value will do since we only have a default case.
label = enumerators.get(0).getValue();
} else {
String enumLabel = null;
for (Iterator<Enumerator> enumIter = enumerators.iterator(); enumIter.hasNext();) {
enumLabel = ((Enumerator)enumIter.next()).getValue();
if (!labels.contains(enumLabel)) {
label = enumLabel;
break;
}
}
}
} else if ((discriminator.getTypeCodeKind().value() == TCKind._tk_short)
|| (discriminator.getTypeCodeKind().value() == TCKind._tk_ushort)) {
if (labels.isEmpty()) {
label = String.valueOf(Short.MAX_VALUE);
}
for (int i = Short.MAX_VALUE; i >= Short.MIN_VALUE; i--) {
if (!labels.contains(String.valueOf(i))) {
label = String.valueOf(i);
break;
}
}
} else if ((discriminator.getTypeCodeKind().value() == TCKind._tk_long)
|| (discriminator.getTypeCodeKind().value() == TCKind._tk_ulong)) {
if (labels.isEmpty()) {
label = String.valueOf(Integer.MAX_VALUE);
}
for (int i = Integer.MAX_VALUE; i >= Integer.MIN_VALUE; i--) {
if (!labels.contains(String.valueOf(i))) {
label = String.valueOf(i);
break;
}
}
}
return label;
}
public void clear() {
if (discriminator != null) {
discriminator.clear();
}
if (value != null) {
value.clear();
}
}
}