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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.cxf.common.xmlschema;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.xml.namespace.QName;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.apache.ws.commons.schema.XmlSchema;
import org.apache.ws.commons.schema.XmlSchemaAll;
import org.apache.ws.commons.schema.XmlSchemaAttribute;
import org.apache.ws.commons.schema.XmlSchemaAttributeGroupRef;
import org.apache.ws.commons.schema.XmlSchemaAttributeOrGroupRef;
import org.apache.ws.commons.schema.XmlSchemaChoice;
import org.apache.ws.commons.schema.XmlSchemaCollection;
import org.apache.ws.commons.schema.XmlSchemaComplexContentExtension;
import org.apache.ws.commons.schema.XmlSchemaComplexContentRestriction;
import org.apache.ws.commons.schema.XmlSchemaComplexType;
import org.apache.ws.commons.schema.XmlSchemaContent;
import org.apache.ws.commons.schema.XmlSchemaContentModel;
import org.apache.ws.commons.schema.XmlSchemaElement;
import org.apache.ws.commons.schema.XmlSchemaObject;
import org.apache.ws.commons.schema.XmlSchemaParticle;
import org.apache.ws.commons.schema.XmlSchemaSequence;
import org.apache.ws.commons.schema.XmlSchemaSequenceMember;
import org.apache.ws.commons.schema.XmlSchemaSimpleContentExtension;
import org.apache.ws.commons.schema.XmlSchemaSimpleContentRestriction;
import org.apache.ws.commons.schema.XmlSchemaType;
import org.apache.ws.commons.schema.extensions.ExtensionRegistry;
import org.apache.ws.commons.schema.resolver.URIResolver;
import org.apache.ws.commons.schema.utils.NamespaceMap;
import org.apache.ws.commons.schema.utils.NamespacePrefixList;
/**
* Wrapper class for XmlSchemaCollection that deals with various quirks and bugs.
*/
public class SchemaCollection {
private XmlSchemaCollection schemaCollection;
private Map> xmlTypesCheckedForCrossImportsPerSchema
= new HashMap>();
public SchemaCollection() {
this(new XmlSchemaCollection());
}
public SchemaCollection(XmlSchemaCollection col) {
schemaCollection = col;
if (schemaCollection.getNamespaceContext() == null) {
// an empty prefix map avoids extra checks for null.
schemaCollection.setNamespaceContext(new NamespaceMap());
}
}
public XmlSchemaCollection getXmlSchemaCollection() {
return schemaCollection;
}
public boolean equals(Object obj) {
if (obj instanceof SchemaCollection) {
return schemaCollection.equals(((SchemaCollection)obj).schemaCollection);
} else if (obj instanceof XmlSchemaCollection) {
return schemaCollection.equals(obj);
}
return false;
}
public XmlSchemaElement getElementByQName(QName qname) {
return schemaCollection.getElementByQName(qname);
}
public XmlSchemaAttribute getAttributeByQName(QName qname) {
return schemaCollection.getAttributeByQName(qname);
}
public ExtensionRegistry getExtReg() {
return schemaCollection.getExtReg();
}
public NamespacePrefixList getNamespaceContext() {
return schemaCollection.getNamespaceContext();
}
public XmlSchemaType getTypeByQName(QName schemaTypeName) {
return schemaCollection.getTypeByQName(schemaTypeName);
}
public XmlSchema[] getXmlSchema(String systemId) {
return schemaCollection.getXmlSchema(systemId);
}
public XmlSchema[] getXmlSchemas() {
return schemaCollection.getXmlSchemas();
}
public int hashCode() {
return schemaCollection.hashCode();
}
public void init() {
schemaCollection.init();
}
public XmlSchema read(Element elem, String uri) {
return schemaCollection.read(elem, uri);
}
public XmlSchema read(Document d, String uri) {
return schemaCollection.read(d, uri);
}
public XmlSchema read(Element elem) {
return schemaCollection.read(elem);
}
public void setBaseUri(String baseUri) {
schemaCollection.setBaseUri(baseUri);
}
public void setExtReg(ExtensionRegistry extReg) {
schemaCollection.setExtReg(extReg);
}
public void setNamespaceContext(NamespacePrefixList namespaceContext) {
schemaCollection.setNamespaceContext(namespaceContext);
}
public void setSchemaResolver(URIResolver schemaResolver) {
schemaCollection.setSchemaResolver(schemaResolver);
}
/**
* This function is not part of the XmlSchema API. Who knows why?
*
* @param namespaceURI targetNamespace
* @return schema, or null.
*/
public XmlSchema getSchemaByTargetNamespace(String namespaceURI) {
for (XmlSchema schema : schemaCollection.getXmlSchemas()) {
if (namespaceURI.equals(schema.getTargetNamespace())) {
return schema;
}
}
return null;
}
public XmlSchema getSchemaForElement(QName name) {
for (XmlSchema schema : schemaCollection.getXmlSchemas()) {
if (name.getNamespaceURI().equals(schema.getTargetNamespace())) {
if (schema.getElementByName(name.getLocalPart()) != null) {
return schema;
} else if (schema.getElementByName(name) != null) {
return schema;
}
}
}
return null;
}
/**
* Once upon a time, XmlSchema had a bug in the constructor used in this function. So this wrapper was
* created to hold a workaround.
*
* @param namespaceURI TNS for new schema.
* @return new schema
*/
public XmlSchema newXmlSchemaInCollection(String namespaceURI) {
return new XmlSchema(namespaceURI, schemaCollection);
}
/**
* Validate that a qualified name points to some namespace in the schema.
*
* @param qname
*/
public void validateQNameNamespace(QName qname) {
// astonishingly, xmlSchemaCollection has no accessor by target URL.
if ("".equals(qname.getNamespaceURI())) {
return; // references to the 'unqualified' namespace are OK even if there is no schema for it.
}
for (XmlSchema schema : schemaCollection.getXmlSchemas()) {
if (schema.getTargetNamespace().equals(qname.getNamespaceURI())) {
return;
}
}
throw new InvalidXmlSchemaReferenceException(qname + " refers to unknown namespace.");
}
public void validateElementName(QName referrer, QName elementQName) {
XmlSchemaElement element = schemaCollection.getElementByQName(elementQName);
if (element == null) {
throw new InvalidXmlSchemaReferenceException(referrer + " references non-existent element "
+ elementQName);
}
}
public void validateTypeName(QName referrer, QName typeQName) {
XmlSchemaType type = schemaCollection.getTypeByQName(typeQName);
if (type == null) {
throw new InvalidXmlSchemaReferenceException(referrer + " references non-existent type "
+ typeQName);
}
}
public void addCrossImports() {
/*
* We need to inventory all the cross-imports to see if any are missing.
*/
for (XmlSchema schema : schemaCollection.getXmlSchemas()) {
addOneSchemaCrossImports(schema);
}
}
private void addOneSchemaCrossImports(XmlSchema schema) {
/*
* We need to visit all the top-level items.
*/
for (XmlSchemaElement element : schema.getElements().values()) {
addElementCrossImportsElement(schema, element);
}
for (XmlSchemaAttribute attribute : schema.getAttributes().values()) {
XmlSchemaUtils.addImportIfNeeded(schema, attribute.getRef().getTargetQName());
XmlSchemaUtils.addImportIfNeeded(schema, attribute.getSchemaTypeName());
}
for (XmlSchemaType type : schema.getSchemaTypes().values()) {
addCrossImportsType(schema, type);
}
}
private void addElementCrossImportsElement(XmlSchema schema, XmlSchemaElement item) {
XmlSchemaElement element = item;
XmlSchemaUtils.addImportIfNeeded(schema, element.getRef().getTargetQName());
XmlSchemaUtils.addImportIfNeeded(schema, element.getSchemaTypeName());
// if there's an anonymous type, it might have element refs in it.
XmlSchemaType schemaType = element.getSchemaType();
if (!crossImportsAdded(schema, schemaType)) {
addCrossImportsType(schema, schemaType);
}
}
/**
* Determines whether the schema has already received (cross) imports for the schemaType
*
* @param schema
* @param schemaType
* @return false if cross imports for schemaType must still be added to schema
*/
private boolean crossImportsAdded(XmlSchema schema, XmlSchemaType schemaType) {
boolean result = true;
if (schemaType != null) {
Set xmlTypesCheckedForCrossImports;
if (!xmlTypesCheckedForCrossImportsPerSchema.containsKey(schema)) {
xmlTypesCheckedForCrossImports = new HashSet();
xmlTypesCheckedForCrossImportsPerSchema.put(schema, xmlTypesCheckedForCrossImports);
} else {
xmlTypesCheckedForCrossImports = xmlTypesCheckedForCrossImportsPerSchema.get(schema);
}
if (!xmlTypesCheckedForCrossImports.contains(schemaType)) {
// cross imports for this schemaType have not yet been added
xmlTypesCheckedForCrossImports.add(schemaType);
result = false;
}
}
return result;
}
private void addCrossImportsType(XmlSchema schema, XmlSchemaType schemaType) {
// the base type might cross schemas.
if (schemaType instanceof XmlSchemaComplexType) {
XmlSchemaComplexType complexType = (XmlSchemaComplexType)schemaType;
XmlSchemaUtils.addImportIfNeeded(schema, complexType.getBaseSchemaTypeName());
addCrossImports(schema, complexType.getContentModel());
addCrossImportsAttributeList(schema, complexType.getAttributes());
// could it be a choice or something else?
if (complexType.getParticle() instanceof XmlSchemaChoice) {
XmlSchemaChoice choice = XmlSchemaUtils.getChoice(complexType);
addCrossImports(schema, choice);
} else if (complexType.getParticle() instanceof XmlSchemaAll) {
XmlSchemaAll all = XmlSchemaUtils.getAll(complexType);
addCrossImports(schema, all);
} else {
XmlSchemaSequence sequence = XmlSchemaUtils.getSequence(complexType);
addCrossImports(schema, sequence);
}
}
}
private void addCrossImports(XmlSchema schema, XmlSchemaAll all) {
for (XmlSchemaObject seqMember : all.getItems()) {
if (seqMember instanceof XmlSchemaElement) {
addElementCrossImportsElement(schema, (XmlSchemaElement)seqMember);
}
}
}
private void addCrossImports(XmlSchema schema, XmlSchemaChoice choice) {
for (XmlSchemaObject seqMember : choice.getItems()) {
if (seqMember instanceof XmlSchemaElement) {
addElementCrossImportsElement(schema, (XmlSchemaElement)seqMember);
}
}
}
private void addCrossImports(XmlSchema schema, XmlSchemaSequence sequence) {
for (XmlSchemaSequenceMember seqMember : sequence.getItems()) {
if (seqMember instanceof XmlSchemaElement) {
addElementCrossImportsElement(schema, (XmlSchemaElement)seqMember);
}
}
}
private void addCrossImportsAttributeList(XmlSchema schema, List list) {
for (XmlSchemaAttributeOrGroupRef attr : list) {
QName ref = null;
if (attr instanceof XmlSchemaAttribute) {
ref = ((XmlSchemaAttribute)attr).getRef().getTargetQName();
} else {
XmlSchemaAttributeGroupRef groupRef = (XmlSchemaAttributeGroupRef)attr;
ref = groupRef.getRef().getTargetQName();
}
if (ref != null) {
XmlSchemaUtils.addImportIfNeeded(schema, ref);
}
}
}
private void addCrossImports(XmlSchema schema, XmlSchemaContentModel contentModel) {
if (contentModel == null) {
return;
}
XmlSchemaContent content = contentModel.getContent();
if (content == null) {
return;
}
if (content instanceof XmlSchemaComplexContentExtension) {
XmlSchemaComplexContentExtension extension = (XmlSchemaComplexContentExtension)content;
XmlSchemaUtils.addImportIfNeeded(schema, extension.getBaseTypeName());
addCrossImportsAttributeList(schema, extension.getAttributes());
XmlSchemaParticle particle = extension.getParticle();
if (particle instanceof XmlSchemaSequence) {
addCrossImports(schema, (XmlSchemaSequence)particle);
} else if (particle instanceof XmlSchemaChoice) {
addCrossImports(schema, (XmlSchemaChoice)particle);
} else if (particle instanceof XmlSchemaAll) {
addCrossImports(schema, (XmlSchemaAll)particle);
}
} else if (content instanceof XmlSchemaComplexContentRestriction) {
XmlSchemaComplexContentRestriction restriction = (XmlSchemaComplexContentRestriction)content;
XmlSchemaUtils.addImportIfNeeded(schema, restriction.getBaseTypeName());
addCrossImportsAttributeList(schema, restriction.getAttributes());
} else if (content instanceof XmlSchemaSimpleContentExtension) {
XmlSchemaSimpleContentExtension extension = (XmlSchemaSimpleContentExtension)content;
XmlSchemaUtils.addImportIfNeeded(schema, extension.getBaseTypeName());
addCrossImportsAttributeList(schema, extension.getAttributes());
} else if (content instanceof XmlSchemaSimpleContentRestriction) {
XmlSchemaSimpleContentRestriction restriction = (XmlSchemaSimpleContentRestriction)content;
XmlSchemaUtils.addImportIfNeeded(schema, restriction.getBaseTypeName());
addCrossImportsAttributeList(schema, restriction.getAttributes());
}
}
}
