diff options
Diffstat (limited to 'branches/sca-java-1.5.1/modules/xsd-xml/src/main/java')
3 files changed, 606 insertions, 0 deletions
diff --git a/branches/sca-java-1.5.1/modules/xsd-xml/src/main/java/org/apache/tuscany/sca/xsd/xml/XMLDocumentHelper.java b/branches/sca-java-1.5.1/modules/xsd-xml/src/main/java/org/apache/tuscany/sca/xsd/xml/XMLDocumentHelper.java new file mode 100644 index 0000000000..a057bbe155 --- /dev/null +++ b/branches/sca-java-1.5.1/modules/xsd-xml/src/main/java/org/apache/tuscany/sca/xsd/xml/XMLDocumentHelper.java @@ -0,0 +1,184 @@ +/* + * 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.sca.xsd.xml; + +import java.io.BufferedInputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.UnsupportedEncodingException; +import java.net.URL; +import java.net.URLConnection; + +import javax.xml.namespace.QName; +import javax.xml.stream.XMLInputFactory; +import javax.xml.stream.XMLStreamConstants; +import javax.xml.stream.XMLStreamException; +import javax.xml.stream.XMLStreamReader; + +import org.xml.sax.InputSource; + +/** + * @version $Rev$ $Date$ + */ +public class XMLDocumentHelper { + public static final QName WSDL11 = new QName("http://schemas.xmlsoap.org/wsdl/", "definitions"); + public static final QName XSD = new QName("http://www.w3.org/2001/XMLSchema", "schema"); + public static final QName WSDL20 = new QName("http://www.w3.org/ns/wsdl", "description"); + + protected static final int BUFFER_SIZE = 256; + + /** + * Detect the XML encoding of the document + * + * @param is The input stream + * @return The encoding + * @throws IOException + */ + public static String getEncoding(InputStream is) throws IOException { + if (!is.markSupported()) + is = new BufferedInputStream(is); + + byte[] buffer = readBuffer(is); + return getXMLEncoding(buffer); + } + + /** + * Searches the array of bytes to determine the XML encoding. + */ + protected static String getXMLEncoding(byte[] bytes) { + String javaEncoding = null; + + if (bytes.length >= 4) { + if (((bytes[0] == -2) && (bytes[1] == -1)) || ((bytes[0] == 0) && (bytes[1] == 60))) + javaEncoding = "UnicodeBig"; + else if (((bytes[0] == -1) && (bytes[1] == -2)) || ((bytes[0] == 60) && (bytes[1] == 0))) + javaEncoding = "UnicodeLittle"; + else if ((bytes[0] == -17) && (bytes[1] == -69) && (bytes[2] == -65)) + javaEncoding = "UTF8"; + } + + String header = null; + + try { + if (javaEncoding != null) + header = new String(bytes, 0, bytes.length, javaEncoding); + else + header = new String(bytes, 0, bytes.length); + } catch (UnsupportedEncodingException e) { + return null; + } + + if (!header.startsWith("<?xml")) + return "UTF-8"; + + int endOfXMLPI = header.indexOf("?>"); + int encodingIndex = header.indexOf("encoding", 6); + + if ((encodingIndex == -1) || (encodingIndex > endOfXMLPI)) + return "UTF-8"; + + int firstQuoteIndex = header.indexOf("\"", encodingIndex); + int lastQuoteIndex; + + if ((firstQuoteIndex == -1) || (firstQuoteIndex > endOfXMLPI)) { + firstQuoteIndex = header.indexOf("'", encodingIndex); + lastQuoteIndex = header.indexOf("'", firstQuoteIndex + 1); + } else + lastQuoteIndex = header.indexOf("\"", firstQuoteIndex + 1); + + return header.substring(firstQuoteIndex + 1, lastQuoteIndex); + } + + protected static byte[] readBuffer(InputStream is) throws IOException { + if (is.available() == 0) { + return new byte[0]; + } + + byte[] buffer = new byte[BUFFER_SIZE]; + is.mark(BUFFER_SIZE); + int bytesRead = is.read(buffer, 0, BUFFER_SIZE); + int totalBytesRead = bytesRead; + + while (bytesRead != -1 && (totalBytesRead < BUFFER_SIZE)) { + bytesRead = is.read(buffer, totalBytesRead, BUFFER_SIZE - totalBytesRead); + + if (bytesRead != -1) + totalBytesRead += bytesRead; + } + + if (totalBytesRead < BUFFER_SIZE) { + byte[] smallerBuffer = new byte[totalBytesRead]; + System.arraycopy(buffer, 0, smallerBuffer, 0, totalBytesRead); + smallerBuffer = buffer; + } + + is.reset(); + return buffer; + } + + public static InputSource getInputSource(URL url) throws IOException { + URLConnection connection = url.openConnection(); + connection.setUseCaches(false); + InputStream is = connection.getInputStream(); + return getInputSource(url, is); + } + + public static InputSource getInputSource(URL url, InputStream is) throws IOException { + is = new BufferedInputStream(is); + String encoding = getEncoding(is); + InputSource inputSource = new InputSource(is); + inputSource.setEncoding(encoding); + // [rfeng] Make sure we set the system id as it will be used as the base URI for nested import/include + inputSource.setSystemId(url.toString()); + return inputSource; + } + + public static String readTargetNamespace(URL doc, QName element, boolean rootOnly, String attribute, XMLInputFactory inputFactory) + throws IOException, XMLStreamException { + if (attribute == null) { + attribute = "targetNamespace"; + } + URLConnection connection = doc.openConnection(); + connection.setUseCaches(false); + InputStream is = connection.getInputStream(); + try { + XMLStreamReader reader = inputFactory.createXMLStreamReader(is); + int eventType = reader.getEventType(); + while (true) { + if (eventType == XMLStreamConstants.START_ELEMENT) { + if (element.equals(reader.getName())) { + return reader.getAttributeValue(null, attribute); + } else if (rootOnly) { + return null; + } + } + if (reader.hasNext()) { + eventType = reader.next(); + } else { + break; + } + } + return null; + } finally { + is.close(); + } + } + +} diff --git a/branches/sca-java-1.5.1/modules/xsd-xml/src/main/java/org/apache/tuscany/sca/xsd/xml/XSDDocumentProcessor.java b/branches/sca-java-1.5.1/modules/xsd-xml/src/main/java/org/apache/tuscany/sca/xsd/xml/XSDDocumentProcessor.java new file mode 100644 index 0000000000..66e2e46148 --- /dev/null +++ b/branches/sca-java-1.5.1/modules/xsd-xml/src/main/java/org/apache/tuscany/sca/xsd/xml/XSDDocumentProcessor.java @@ -0,0 +1,102 @@ +/* + * 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.sca.xsd.xml; + +import java.net.URI; +import java.net.URL; + +import javax.xml.namespace.QName; +import javax.xml.stream.XMLInputFactory; + +import org.apache.tuscany.sca.assembly.builder.impl.ProblemImpl; +import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint; +import org.apache.tuscany.sca.contribution.processor.URLArtifactProcessor; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.contribution.service.ContributionReadException; +import org.apache.tuscany.sca.contribution.service.ContributionResolveException; +import org.apache.tuscany.sca.monitor.Monitor; +import org.apache.tuscany.sca.monitor.Problem; +import org.apache.tuscany.sca.monitor.Problem.Severity; +import org.apache.tuscany.sca.xsd.XSDFactory; +import org.apache.tuscany.sca.xsd.XSDefinition; + +/** + * An ArtifactProcessor for XSD documents. + * + * @version $Rev$ $Date$ + */ +public class XSDDocumentProcessor implements URLArtifactProcessor<XSDefinition> { + + private XSDFactory factory; + private XMLInputFactory inputFactory; + private Monitor monitor; + + public XSDDocumentProcessor(ModelFactoryExtensionPoint modelFactories, Monitor monitor) { + this.factory = modelFactories.getFactory(XSDFactory.class); + this.inputFactory = modelFactories.getFactory(XMLInputFactory.class); + this.monitor = monitor; + } + + /** + * Report a exception. + * + * @param problems + * @param message + * @param model + */ + private void error(String message, Object model, Exception ex) { + if (monitor != null) { + Problem problem = new ProblemImpl(this.getClass().getName(), "xsd-xml-validation-messages", Severity.ERROR, model, message, ex); + monitor.problem(problem); + } + } + + public XSDefinition read(URL contributionURL, URI artifactURI, URL artifactURL) throws ContributionReadException { + try { + return indexRead(artifactURL); + } catch (Exception e) { + ContributionReadException ce = new ContributionReadException(e); + error("ContributionReadException", artifactURL, ce); + throw ce; + } + } + + public void resolve(XSDefinition model, ModelResolver resolver) throws ContributionResolveException { + } + + public String getArtifactType() { + return ".xsd"; + } + + public Class<XSDefinition> getModelType() { + return XSDefinition.class; + } + + public static final QName XSD = new QName("http://www.w3.org/2001/XMLSchema", "schema"); + + protected XSDefinition indexRead(URL doc) throws Exception { + XSDefinition xsd = factory.createXSDefinition(); + xsd.setUnresolved(true); + xsd.setNamespace(XMLDocumentHelper.readTargetNamespace(doc, XSD, true, "targetNamespace", inputFactory)); + xsd.setLocation(doc.toURI()); + xsd.setUnresolved(false); + return xsd; + } +} diff --git a/branches/sca-java-1.5.1/modules/xsd-xml/src/main/java/org/apache/tuscany/sca/xsd/xml/XSDModelResolver.java b/branches/sca-java-1.5.1/modules/xsd-xml/src/main/java/org/apache/tuscany/sca/xsd/xml/XSDModelResolver.java new file mode 100644 index 0000000000..4971c0eb98 --- /dev/null +++ b/branches/sca-java-1.5.1/modules/xsd-xml/src/main/java/org/apache/tuscany/sca/xsd/xml/XSDModelResolver.java @@ -0,0 +1,320 @@ +/* + * 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.sca.xsd.xml; + +import java.io.IOException; +import java.net.URL; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import org.apache.tuscany.sca.contribution.Artifact; +import org.apache.tuscany.sca.contribution.Contribution; +import org.apache.tuscany.sca.contribution.DefaultImport; +import org.apache.tuscany.sca.contribution.Import; +import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint; +import org.apache.tuscany.sca.contribution.namespace.NamespaceImport; +import org.apache.tuscany.sca.contribution.resolver.ModelResolver; +import org.apache.tuscany.sca.contribution.service.ContributionRuntimeException; +import org.apache.tuscany.sca.xsd.DefaultXSDFactory; +import org.apache.tuscany.sca.xsd.XSDFactory; +import org.apache.tuscany.sca.xsd.XSDefinition; +import org.apache.ws.commons.schema.XmlSchema; +import org.apache.ws.commons.schema.XmlSchemaCollection; +import org.apache.ws.commons.schema.XmlSchemaInclude; +import org.apache.ws.commons.schema.resolver.URIResolver; +import org.xml.sax.InputSource; + +/** + * A Model Resolver for XSD models. + * + * @version $Rev$ $Date$ + */ +public class XSDModelResolver implements ModelResolver { + private static final String AGGREGATED_XSD = "http://tuscany.apache.org/aggregated.xsd"; + private XSDFactory factory; + private Contribution contribution; + private Map<String, List<XSDefinition>> map = new HashMap<String, List<XSDefinition>>(); + private XmlSchemaCollection schemaCollection; + + public XSDModelResolver(Contribution contribution, ModelFactoryExtensionPoint modelFactories) { + this.contribution = contribution; + this.schemaCollection = new XmlSchemaCollection(); + schemaCollection.setSchemaResolver(new URIResolverImpl(contribution)); + this.factory = new DefaultXSDFactory(); + } + + public void addModel(Object resolved) { + XSDefinition definition = (XSDefinition)resolved; + List<XSDefinition> list = map.get(definition.getNamespace()); + if (list == null) { + list = new ArrayList<XSDefinition>(); + map.put(definition.getNamespace(), list); + } + list.add(definition); + } + + public Object removeModel(Object resolved) { + XSDefinition definition = (XSDefinition)resolved; + List<XSDefinition> list = map.get(definition.getNamespace()); + if (list == null) { + return null; + } else { + return list.remove(definition); + } + } + + public <T> T resolveModel(Class<T> modelClass, T unresolved) { + + XSDefinition definition = (XSDefinition)unresolved; + String namespace = definition.getNamespace(); + + // Lookup a definition for the given namespace within the + // current contribution. + List<XSDefinition> list = map.get(namespace); + XSDefinition modelXSD = null; + if (list != null && definition.getDocument() != null) { + // Set the document for the inline schema + int index = list.indexOf(definition); + if (index != -1) { // a matching (not identical) document was found + modelXSD = list.get(index); + modelXSD.setDocument(definition.getDocument()); + } + } + if (list == null && definition.getDocument() != null) { + // Hit for the 1st time + list = new ArrayList<XSDefinition>(); + list.add(definition); + map.put(namespace, list); + } + XSDefinition resolved = null; + try { + resolved = aggregate(list); + } catch (ContributionRuntimeException e) { + throw new ContributionRuntimeException(e); + } + if (resolved != null && !resolved.isUnresolved()) { + if (definition.isUnresolved() && definition.getSchema() == null && modelXSD != null) { + // Update the unresolved model with schema information and mark it + // resolved. This information in the unresolved model is needed when + // this method is called by WSDLModelResolver.readInlineSchemas(). + definition.setSchema(modelXSD.getSchema()); + definition.setSchemaCollection(modelXSD.getSchemaCollection()); + definition.setUnresolved(false); + } + return modelClass.cast(resolved); + } + + // No definition found, delegate the resolution to the imports + for (Import import_ : this.contribution.getImports()) { + if (import_ instanceof NamespaceImport) { + NamespaceImport namespaceImport = (NamespaceImport)import_; + if (namespaceImport.getNamespace().equals(namespace)) { + + // Delegate the resolution to the namespace import resolver + resolved = + namespaceImport.getModelResolver().resolveModel(XSDefinition.class, (XSDefinition)unresolved); + if (!resolved.isUnresolved()) { + return modelClass.cast(resolved); + } + } + } else if (import_ instanceof DefaultImport) { + + // Delegate the resolution to the default import resolver + resolved = + import_.getModelResolver().resolveModel(XSDefinition.class, (XSDefinition)unresolved); + if (!resolved.isUnresolved()) { + return modelClass.cast(resolved); + } + } + } + return modelClass.cast(unresolved); + } + + private void loadOnDemand(XSDefinition definition) throws ContributionRuntimeException { + if (definition.getSchema() != null) { + return; + } + if (definition.getDocument() != null) { + String uri = null; + if (definition.getLocation() != null) { + uri = definition.getLocation().toString(); + } + XmlSchema schema = null; + try { + schema = schemaCollection.read(definition.getDocument(), uri, null); + } catch (RuntimeException e) { + // find original cause of the problem + Throwable cause = e; + while (cause.getCause() != null) { + cause = cause.getCause(); + } + throw new ContributionRuntimeException(cause); + } + definition.setSchemaCollection(schemaCollection); + definition.setSchema(schema); + definition.setUnresolved(false); + } else if (definition.getLocation() != null) { + if (definition.getLocation().getFragment() != null) { + // It's an inline schema + // FIXME: We need to trigger the loading of the enclosing WSDL models + return; + } + // Read an XSD document + InputSource xsd; + try { + xsd = XMLDocumentHelper.getInputSource(definition.getLocation().toURL()); + } catch (IOException e) { + throw new ContributionRuntimeException(e); + } + for (XmlSchema d : schemaCollection.getXmlSchemas()) { + if (isSameNamespace(d.getTargetNamespace(), definition.getNamespace())) { + if (d.getSourceURI().equals(definition.getLocation().toString())) + return; + } + } + XmlSchema schema = null; + try { + schema = schemaCollection.read(xsd, null); + } catch (RuntimeException e) { + // find original cause of the problem + Throwable cause = e; + while (cause.getCause() != null) { + cause = cause.getCause(); + } + throw new ContributionRuntimeException(cause); + } + definition.setSchemaCollection(schemaCollection); + definition.setSchema(schema); + } + } + + private boolean isSameNamespace(String ns1, String ns2) { + if (ns1 == null) { + return ns2 == null; + } else { + return ns1.equals(ns2); + } + } + + /** + * Create a facade XmlSchema which includes all the definitions + * + * @param definitions A list of the XmlSchema under the same target + * namespace + * @return The aggregated XmlSchema + */ + private XSDefinition aggregate(List<XSDefinition> definitions) throws ContributionRuntimeException { + if (definitions == null || definitions.size() == 0) { + return null; + } + if (definitions.size() == 1) { + XSDefinition d = definitions.get(0); + loadOnDemand(d); + return d; + } + XSDefinition aggregated = factory.createXSDefinition(); + for (XSDefinition d : definitions) { + loadOnDemand(d); + } + String ns = definitions.get(0).getNamespace(); + + XmlSchema facade = null; + // Check if the facade XSD is already in the collection + for (XmlSchema s : schemaCollection.getXmlSchema(AGGREGATED_XSD)) { + if (ns.equals(s.getTargetNamespace())) { + facade = s; + break; + } + } + if (facade == null) { + // This will add the facade into the collection + facade = new XmlSchema(ns, AGGREGATED_XSD, schemaCollection); + } + + for (XmlSchema d : schemaCollection.getXmlSchemas()) { + if (ns.equals(d.getTargetNamespace())) { + if (d == facade) { + continue; + } + XmlSchemaInclude include = new XmlSchemaInclude(); + include.setSchema(d); + include.setSourceURI(d.getSourceURI()); + include.setSchemaLocation(d.getSourceURI()); + facade.getIncludes().add(include); + facade.getItems().add(include); + } + } + aggregated.setUnresolved(true); + aggregated.setSchema(facade); + aggregated.setNamespace(ns); + aggregated.setAggregatedDefinitions(definitions); + aggregated.setUnresolved(false); + + // FIXME: [rfeng] This is hacky + //definitions.clear(); + //definitions.add(aggregated); + return aggregated; + } + + /** + * URI resolver implementation for XML schema + */ + public static class URIResolverImpl implements URIResolver { + private Contribution contribution; + + public URIResolverImpl(Contribution contribution) { + this.contribution = contribution; + } + + public InputSource resolveEntity(String targetNamespace, String schemaLocation, String baseUri) { + try { + if (schemaLocation == null) { + return null; + } + URL url = null; + if (schemaLocation.startsWith("/")) { + // The URI is relative to the contribution + String uri = schemaLocation.substring(1); + for (Artifact a : contribution.getArtifacts()) { + if (a.getURI().equals(uri)) { + url = new URL(a.getLocation()); + break; + } + } + if (url == null) { + // URI not found in the contribution; return a default InputSource + // so that the XmlSchema code will produce a useful diagnostic + return new InputSource(schemaLocation); + } + } else { + url = new URL(new URL(baseUri), schemaLocation); + } + return XMLDocumentHelper.getInputSource(url); + } catch (IOException e) { + // Invalid URI; return a default InputSource so that the + // XmlSchema code will produce a useful diagnostic + return new InputSource(schemaLocation); + } + } + } + +} |