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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.jaxrs.utils.schemas;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import org.w3c.dom.ls.LSInput;
import org.w3c.dom.ls.LSResourceResolver;
import org.apache.cxf.Bus;
import org.apache.cxf.BusFactory;
import org.apache.cxf.catalog.OASISCatalogManager;
import org.apache.cxf.common.util.ClasspathScanner;
import org.apache.cxf.common.xmlschema.LSInputImpl;
import org.apache.cxf.jaxrs.utils.ResourceUtils;
import org.apache.ws.commons.schema.constants.Constants;
public class SchemaHandler {
static final String DEFAULT_CATALOG_LOCATION = "classpath:META-INF/jax-rs-catalog.xml";
private Schema schema;
private Bus bus;
private String catalogLocation;
public SchemaHandler() {
}
public void setBus(Bus b) {
bus = b;
}
@Deprecated
public void setSchemas(List locations) {
setSchemaLocations(locations);
}
public void setSchemaLocations(List locations) {
schema = createSchema(locations, catalogLocation,
bus == null ? BusFactory.getThreadDefaultBus() : bus);
}
public void setCatalogLocation(String name) {
this.catalogLocation = name;
}
public Schema getSchema() {
return schema;
}
public static Schema createSchema(List locations, String catalogLocation, final Bus bus) {
SchemaFactory factory = SchemaFactory.newInstance(Constants.URI_2001_SCHEMA_XSD);
try {
List sources = new ArrayList<>();
for (String loc : locations) {
final List schemaURLs;
if (loc.lastIndexOf('.') == -1 || loc.lastIndexOf('*') != -1) {
schemaURLs = ClasspathScanner.findResources(loc, "xsd");
} else {
URL url = ResourceUtils.getResourceURL(loc, bus);
schemaURLs = url != null ? Collections.singletonList(url) : Collections.emptyList();
}
if (schemaURLs.isEmpty()) {
throw new IllegalArgumentException("Cannot find XML schema location: " + loc);
}
for (URL schemaURL : schemaURLs) {
Reader r = new BufferedReader(
new InputStreamReader(schemaURL.openStream(), StandardCharsets.UTF_8));
StreamSource source = new StreamSource(r);
source.setSystemId(schemaURL.toString());
sources.add(source);
}
}
if (sources.isEmpty()) {
return null;
}
final OASISCatalogManager catalogResolver = OASISCatalogManager.getCatalogManager(bus);
if (catalogResolver != null) {
catalogLocation = catalogLocation == null
? SchemaHandler.DEFAULT_CATALOG_LOCATION : catalogLocation;
URL catalogURL = ResourceUtils.getResourceURL(catalogLocation, bus);
if (catalogURL != null) {
try {
catalogResolver.loadCatalog(catalogURL);
factory.setResourceResolver(new LSResourceResolver() {
public LSInput resolveResource(String type, String namespaceURI, String publicId,
String systemId, String baseURI) {
try {
String resolvedLocation = catalogResolver.resolveSystem(systemId);
if (resolvedLocation == null) {
resolvedLocation = catalogResolver.resolveURI(namespaceURI);
}
if (resolvedLocation == null) {
resolvedLocation = catalogResolver.resolvePublic(
publicId != null ? publicId : namespaceURI, systemId);
}
if (resolvedLocation != null) {
InputStream resourceStream =
ResourceUtils.getResourceStream(resolvedLocation, bus);
if (resourceStream != null) {
return new LSInputImpl(publicId, systemId, resourceStream);
}
}
} catch (Exception ex) {
// ignore
}
return null;
}
});
} catch (IOException ex) {
throw new IllegalArgumentException("Catalog " + catalogLocation + " can not be loaded", ex);
}
}
}
return factory.newSchema(sources.toArray(new Source[0]));
} catch (Exception ex) {
throw new IllegalArgumentException("Failed to load XML schema : " + ex.getMessage(), ex);
}
}
}
