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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.io.Reader;
import java.lang.reflect.Method;
import javax.xml.namespace.QName;
import javax.xml.transform.Source;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xml.sax.InputSource;
import org.apache.ws.commons.schema.ValidationEventHandler;
import org.apache.ws.commons.schema.XmlSchema;
import org.apache.ws.commons.schema.XmlSchemaAttribute;
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.XmlSchemaObjectCollection;
import org.apache.ws.commons.schema.XmlSchemaObjectTable;
import org.apache.ws.commons.schema.XmlSchemaParticle;
import org.apache.ws.commons.schema.XmlSchemaSequence;
import org.apache.ws.commons.schema.XmlSchemaSimpleContentExtension;
import org.apache.ws.commons.schema.XmlSchemaSimpleContentRestriction;
import org.apache.ws.commons.schema.XmlSchemaSimpleType;
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;
import org.apache.ws.commons.schema.utils.TargetNamespaceValidator;
/**
* Wrapper class for XmlSchemaCollection that deals with various quirks and bugs. One bug is WSCOMMONS-272.
*/
public class SchemaCollection {
private static final Method GET_ELEMENT_BY_NAME_METHOD;
static {
Method m = null;
try {
m = XmlSchema.class.getMethod("getElementByName", new Class[] {
String.class
});
} catch (Exception ex) {
// ignore
}
GET_ELEMENT_BY_NAME_METHOD = m;
}
private XmlSchemaCollection schemaCollection;
public SchemaCollection() {
this(new XmlSchemaCollection());
}
public SchemaCollection(XmlSchemaCollection col) {
schemaCollection = col;
col.getExtReg().setDefaultExtensionDeserializer(new FixedExtensionDeserializer());
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) {
return schemaCollection.equals(obj);
}
public XmlSchemaElement getElementByQName(QName qname) {
return schemaCollection.getElementByQName(qname);
}
public XmlSchemaAttribute getAttributeByQName(QName qname) {
String uri = qname.getNamespaceURI();
for (XmlSchema schema : schemaCollection.getXmlSchemas()) {
if (uri.equals(schema.getTargetNamespace())) {
XmlSchemaObjectTable attributes = schema.getAttributes();
XmlSchemaAttribute attribute = (XmlSchemaAttribute)attributes.getItem(qname);
if (attribute != null) {
return attribute;
}
}
}
return null;
}
public ExtensionRegistry getExtReg() {
return schemaCollection.getExtReg();
}
public NamespacePrefixList getNamespaceContext() {
return schemaCollection.getNamespaceContext();
}
public XmlSchemaType getTypeByQName(QName schemaTypeName) {
XmlSchemaType xst = schemaCollection.getTypeByQName(schemaTypeName);
// HACKY workaround for WSCOMMONS-355
if (xst == null && "http://www.w3.org/2001/XMLSchema".equals(schemaTypeName.getNamespaceURI())) {
XmlSchema sch = getSchemaByTargetNamespace(schemaTypeName.getNamespaceURI());
if ("anySimpleType".equals(schemaTypeName.getLocalPart())) {
XmlSchemaSimpleType type = new XmlSchemaSimpleType(sch);
type.setName(schemaTypeName.getLocalPart());
sch.addType(type);
xst = type;
} else if ("anyType".equals(schemaTypeName.getLocalPart())) {
XmlSchemaType type = new XmlSchemaType(sch);
type.setName(schemaTypeName.getLocalPart());
sch.addType(type);
xst = type;
}
}
return xst;
}
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(Document doc, String uri, ValidationEventHandler veh,
TargetNamespaceValidator validator) {
return schemaCollection.read(doc, uri, veh, validator);
}
public XmlSchema read(Document doc, String uri, ValidationEventHandler veh) {
return schemaCollection.read(doc, uri, veh);
}
public XmlSchema read(Document doc, ValidationEventHandler veh) {
return schemaCollection.read(doc, veh);
}
public XmlSchema read(Element elem, String uri) {
return schemaCollection.read(elem, uri);
}
public XmlSchema read(Element elem) {
return schemaCollection.read(elem);
}
public XmlSchema read(InputSource inputSource, ValidationEventHandler veh) {
return schemaCollection.read(inputSource, veh);
}
public XmlSchema read(Reader r, ValidationEventHandler veh) {
return schemaCollection.read(r, veh);
}
public XmlSchema read(Source source, ValidationEventHandler veh) {
return schemaCollection.read(source, veh);
}
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 (schema.getTargetNamespace().equals(namespaceURI)) {
return schema;
}
}
return null;
}
public XmlSchema getSchemaForElement(QName name) {
for (XmlSchema schema : schemaCollection.getXmlSchemas()) {
if (name.getNamespaceURI().equals(schema.getTargetNamespace())) {
// for XmlSchema 1.4, we should use:
// schema.getElementByName(name.getLocalPart()) != null
// but that doesn't exist in 1.3 so for now, use reflection
try {
if (GET_ELEMENT_BY_NAME_METHOD != null) {
if (GET_ELEMENT_BY_NAME_METHOD.invoke(schema, new Object[] {
name.getLocalPart()
}) != null) {
return schema;
}
} else if (schema.getElementByName(name) != null) {
return schema;
}
} catch (java.lang.reflect.InvocationTargetException ex) {
// ignore
} catch (IllegalAccessException ex) {
// ignore
}
}
}
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 addGlobalElementToSchema(XmlSchemaElement element) {
synchronized (this) {
XmlSchema schema = getSchemaByTargetNamespace(element.getQName().getNamespaceURI());
if (schema == null) {
schema = newXmlSchemaInCollection(element.getQName().getNamespaceURI());
}
schema.getItems().add(element);
// believe it or not, it is up to us to do both of these adds!
schema.getElements().add(element.getQName(), element);
}
}
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 (int x = 0; x < schema.getItems().getCount(); x++) {
XmlSchemaObject item = schema.getItems().getItem(x);
if (item instanceof XmlSchemaElement) {
addElementCrossImportsElement(schema, item);
} else if (item instanceof XmlSchemaAttribute) {
XmlSchemaAttribute attr = (XmlSchemaAttribute)item;
XmlSchemaUtils.addImportIfNeeded(schema, attr.getRefName());
XmlSchemaUtils.addImportIfNeeded(schema, attr.getSchemaTypeName());
if (attr.getSchemaType() != null) {
XmlSchemaUtils.addImportIfNeeded(schema, attr.getSchemaType().getBaseSchemaTypeName());
}
} else if (item instanceof XmlSchemaType) {
XmlSchemaType type = (XmlSchemaType)item;
addCrossImportsType(schema, type);
}
}
}
private void addElementCrossImportsElement(XmlSchema schema, XmlSchemaObject item) {
XmlSchemaElement element = (XmlSchemaElement)item;
XmlSchemaUtils.addImportIfNeeded(schema, element.getRefName());
XmlSchemaUtils.addImportIfNeeded(schema, element.getSchemaTypeName());
// if there's an anonymous type, it might have element refs in it.
XmlSchemaType schemaType = element.getSchemaType();
addCrossImportsType(schema, schemaType);
}
private void addCrossImportsType(XmlSchema schema, XmlSchemaType schemaType) {
if (schemaType != null) {
// the base type might cross schemas.
XmlSchemaUtils.addImportIfNeeded(schema, schemaType.getBaseSchemaTypeName());
if (schemaType instanceof XmlSchemaComplexType) {
XmlSchemaComplexType complexType = (XmlSchemaComplexType)schemaType;
addCrossImports(schema, complexType.getContentModel());
addCrossImportsAttributeList(schema, complexType.getAttributes());
// could it be a choice or something else?
XmlSchemaSequence sequence = XmlSchemaUtils.getSequence(complexType);
addCrossImportsSequence(schema, sequence);
}
}
}
private void addCrossImportsSequence(XmlSchema schema, XmlSchemaSequence sequence) {
XmlSchemaObjectCollection items = sequence.getItems();
for (int x = 0; x < items.getCount(); x++) {
XmlSchemaObject seqItem = items.getItem(x);
if (seqItem instanceof XmlSchemaElement) {
addElementCrossImportsElement(schema, seqItem);
}
}
}
private void addCrossImportsAttributeList(XmlSchema schema, XmlSchemaObjectCollection attributes) {
for (int x = 0; x < attributes.getCount(); x++) {
XmlSchemaAttribute attr = (XmlSchemaAttribute)attributes.getItem(x);
XmlSchemaUtils.addImportIfNeeded(schema, attr.getRefName());
}
}
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) {
addCrossImportsSequence(schema, (XmlSchemaSequence)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());
}
}
public static void addGlobalElementToSchema(XmlSchema schema, XmlSchemaElement element) {
synchronized (schema) {
schema.getItems().add(element);
// believe it or not, it is up to us to do both of these adds!
schema.getElements().add(element.getQName(), element);
}
}
public static void addGlobalTypeToSchema(XmlSchema schema, XmlSchemaType type) {
synchronized (schema) {
schema.getItems().add(type);
schema.addType(type);
}
}
}