org.apache.cxf.catalog.CatalogXmlSchemaURIResolver Maven / Gradle / Ivy
/**
* 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.catalog;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import org.xml.sax.InputSource;
import org.apache.cxf.Bus;
import org.apache.cxf.helpers.IOUtils;
import org.apache.cxf.resource.ExtendedURIResolver;
import org.apache.cxf.transport.TransportURIResolver;
import org.apache.ws.commons.schema.XmlSchemaException;
import org.apache.ws.commons.schema.resolver.URIResolver;
/**
* Resolves URIs using Apache Commons Resolver API.
*/
public class CatalogXmlSchemaURIResolver implements URIResolver {
private ExtendedURIResolver resolver;
private OASISCatalogManager catalogResolver;
private Map resolved = new HashMap();
public CatalogXmlSchemaURIResolver(Bus bus) {
this(OASISCatalogManager.getCatalogManager(bus));
this.resolver = new TransportURIResolver(bus);
this.catalogResolver = OASISCatalogManager.getCatalogManager(bus);
}
public CatalogXmlSchemaURIResolver(OASISCatalogManager catalogManager) {
this.resolver = new ExtendedURIResolver();
this.catalogResolver = catalogManager;
}
public Map getResolvedMap() {
return resolved;
}
public InputSource resolveEntity(String targetNamespace, String schemaLocation, String baseUri) {
String resolvedSchemaLocation = null;
if (this.catalogResolver != null) {
try {
resolvedSchemaLocation = this.catalogResolver.resolveSystem(schemaLocation);
if (resolvedSchemaLocation == null) {
resolvedSchemaLocation = catalogResolver.resolveURI(schemaLocation);
}
if (resolvedSchemaLocation == null) {
resolvedSchemaLocation = catalogResolver.resolvePublic(schemaLocation, baseUri);
}
} catch (IOException e) {
throw new RuntimeException("Catalog resolution failed", e);
}
}
InputSource in = null;
if (resolvedSchemaLocation == null) {
in = this.resolver.resolve(schemaLocation, baseUri);
} else {
resolved.put(schemaLocation, resolvedSchemaLocation);
in = this.resolver.resolve(resolvedSchemaLocation, baseUri);
}
// XXX: If we return null, a NPE is raised in SchemaBuilder.
// If we return new InputSource(), a XmlSchemaException is raised
// but without any nice error message. So let's just throw a nice error here.
if (in == null) {
throw new XmlSchemaException("Unable to locate imported document "
+ "at '" + schemaLocation + "'"
+ (baseUri == null
? "."
: ", relative to '" + baseUri + "'."));
} else if (in.getByteStream() != null
&& !(in.getByteStream() instanceof ByteArrayInputStream)) {
//workaround bug in XmlSchema - XmlSchema is not closing the InputStreams
//that are returned for imports. Thus, with a lot of services starting up
//or a lot of schemas imported or similar, it's easy to run out of
//file handles. We'll just load the file into a byte[] and return that.
try {
InputStream ins = IOUtils.loadIntoBAIS(in.getByteStream());
in.setByteStream(ins);
} catch (IOException e) {
throw new XmlSchemaException("Unable to load imported document "
+ "at '" + schemaLocation + "'"
+ (baseUri == null
? "."
: ", relative to '" + baseUri + "'."),
e);
}
}
return in;
}
}