001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.camel.component.validator; 018 019 import java.io.InputStream; 020 import java.util.Map; 021 022 import javax.xml.transform.stream.StreamSource; 023 024 import org.w3c.dom.ls.LSResourceResolver; 025 026 import org.apache.camel.Endpoint; 027 import org.apache.camel.impl.DefaultComponent; 028 import org.apache.camel.impl.ProcessorEndpoint; 029 import org.apache.camel.processor.validation.ValidatingProcessor; 030 import org.apache.camel.util.IOHelper; 031 import org.apache.camel.util.ResourceHelper; 032 import org.slf4j.Logger; 033 import org.slf4j.LoggerFactory; 034 035 /** 036 * The <a href="http://camel.apache.org/validation.html">Validator Component</a> 037 * for validating XML against some schema 038 */ 039 public class ValidatorComponent extends DefaultComponent { 040 041 private static final transient Logger LOG = LoggerFactory.getLogger(ValidatorComponent.class); 042 043 protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception { 044 final String resourceUri = remaining; 045 InputStream is = ResourceHelper.resolveMandatoryResourceAsInputStream(getCamelContext().getClassResolver(), resourceUri); 046 StreamSource source = new StreamSource(is); 047 048 ValidatingProcessor validator = new ValidatingProcessor(); 049 validator.setSchemaSource(source); 050 LOG.debug("{} using schema resource: {}", this, resourceUri); 051 configureValidator(validator, uri, remaining, parameters); 052 053 // force loading of schema at create time otherwise concurrent 054 // processing could cause thread safe issues for the javax.xml.validation.SchemaFactory 055 validator.loadSchema(); 056 // and make sure to close the input stream after the schema has been loaded 057 IOHelper.close(is); 058 059 return new ProcessorEndpoint(uri, this, validator); 060 } 061 062 protected void configureValidator(ValidatingProcessor validator, String uri, String remaining, Map<String, Object> parameters) throws Exception { 063 LSResourceResolver resourceResolver = resolveAndRemoveReferenceParameter(parameters, "resourceResolver", LSResourceResolver.class); 064 if (resourceResolver != null) { 065 validator.setResourceResolver(resourceResolver); 066 } else { 067 validator.setResourceResolver(new DefaultLSResourceResolver(getCamelContext(), remaining)); 068 } 069 070 setProperties(validator, parameters); 071 } 072 }