| /* |
| * 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.oodt.cas.crawl; |
| |
| //OODT imports |
| import org.apache.oodt.cas.metadata.MetExtractor; |
| import org.apache.oodt.cas.metadata.Metadata; |
| import org.apache.oodt.cas.metadata.exceptions.MetExtractionException; |
| import org.apache.oodt.cas.metadata.filenaming.NamingConvention; |
| import org.apache.oodt.cas.metadata.preconditions.PreConditionComparator; |
| |
| //JDK imports |
| import java.io.File; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| //Spring imports |
| import org.springframework.beans.factory.annotation.Required; |
| |
| /** |
| * @author mattmann |
| * @author bfoster |
| * @version $Revision$ |
| * |
| * <p> |
| * A variant of the Standard Product Crawler where .met files are generated on |
| * the fly as product files are encountered. |
| * </p> |
| */ |
| public class MetExtractorProductCrawler extends ProductCrawler { |
| |
| private MetExtractor metExtractor; |
| |
| private String metExtractorConfig; |
| |
| private List<String> preCondIds = new ArrayList<String>(); |
| |
| private String namingConventionId; |
| |
| @Override |
| protected Metadata getMetadataForProduct(File product) throws Exception { |
| return metExtractor.extractMetadata(product); |
| } |
| |
| @Override |
| protected boolean passesPreconditions(File product) { |
| if (this.getPreCondIds() != null) { |
| for (String preCondId : this.getPreCondIds()) { |
| if (!((PreConditionComparator<?>) this.getApplicationContext() |
| .getBean(preCondId)).passes(product)) |
| return false; |
| } |
| } |
| return product.exists() && product.length() > 0; |
| } |
| |
| @Override |
| protected File renameProduct(File product, Metadata productMetadata) |
| throws Exception { |
| if (getNamingConventionId() != null) { |
| NamingConvention namingConvention = (NamingConvention) |
| getApplicationContext().getBean(getNamingConventionId()); |
| if (namingConvention == null) { |
| throw new Exception("NamingConvention Id '" + getNamingConventionId() |
| + "' is not defined"); |
| } |
| return namingConvention.rename(product, productMetadata); |
| } else { |
| return product; |
| } |
| } |
| |
| @Required |
| public void setMetExtractor(String metExtractor) |
| throws MetExtractionException, InstantiationException, |
| IllegalAccessException, ClassNotFoundException { |
| this.metExtractor = (MetExtractor) Class.forName(metExtractor) |
| .newInstance(); |
| if (metExtractorConfig != null && !metExtractorConfig.equals("")) |
| this.metExtractor.setConfigFile(metExtractorConfig); |
| } |
| |
| @Required |
| public void setMetExtractorConfig(String metExtractorConfig) |
| throws MetExtractionException { |
| this.metExtractorConfig = metExtractorConfig; |
| if (this.metExtractor != null && metExtractorConfig != null |
| && !metExtractorConfig.equals("")) |
| this.metExtractor.setConfigFile(metExtractorConfig); |
| } |
| |
| public List<String> getPreCondIds() { |
| return preCondIds; |
| } |
| |
| public void setPreCondIds(List<String> preCondIds) { |
| this.preCondIds = preCondIds; |
| } |
| |
| public void setNamingConventionId(String namingConventionId) { |
| this.namingConventionId = namingConventionId; |
| } |
| |
| public String getNamingConventionId() { |
| return namingConventionId; |
| } |
| } |