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 org.w3c.dom.ls.LSResourceResolver; 023 024 import org.apache.camel.Endpoint; 025 import org.apache.camel.converter.IOConverter; 026 import org.apache.camel.impl.DefaultComponent; 027 import org.apache.camel.impl.ProcessorEndpoint; 028 import org.apache.camel.processor.validation.ValidatingProcessor; 029 import org.apache.camel.util.IOHelper; 030 import org.apache.camel.util.ResourceHelper; 031 import org.slf4j.Logger; 032 import org.slf4j.LoggerFactory; 033 034 /** 035 * The <a href="http://camel.apache.org/validation.html">Validator Component</a> 036 * for validating XML against some schema 037 */ 038 public class ValidatorComponent extends DefaultComponent { 039 040 private static final Logger LOG = LoggerFactory.getLogger(ValidatorComponent.class); 041 042 protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception { 043 final String resourceUri = remaining; 044 InputStream is = ResourceHelper.resolveMandatoryResourceAsInputStream(getCamelContext().getClassResolver(), resourceUri); 045 byte[] bytes = null; 046 try { 047 bytes = IOConverter.toBytes(is); 048 } finally { 049 // and make sure to close the input stream after the schema has been loaded 050 IOHelper.close(is); 051 } 052 053 ValidatingProcessor validator = new ValidatingProcessor(); 054 validator.setSchemaAsByteArray(bytes); 055 LOG.debug("{} using schema resource: {}", this, resourceUri); 056 configureValidator(validator, uri, remaining, parameters); 057 058 // force loading of schema at create time otherwise concurrent 059 // processing could cause thread safe issues for the javax.xml.validation.SchemaFactory 060 validator.loadSchema(); 061 062 return new ProcessorEndpoint(uri, this, validator); 063 } 064 065 protected void configureValidator(ValidatingProcessor validator, String uri, String remaining, Map<String, Object> parameters) throws Exception { 066 LSResourceResolver resourceResolver = resolveAndRemoveReferenceParameter(parameters, "resourceResolver", LSResourceResolver.class); 067 if (resourceResolver != null) { 068 validator.setResourceResolver(resourceResolver); 069 } else { 070 validator.setResourceResolver(new DefaultLSResourceResolver(getCamelContext(), remaining)); 071 } 072 073 setProperties(validator, parameters); 074 } 075 }