/* * (C) Copyright 2006-2007 Nuxeo SA (http://nuxeo.com/) and others. * * Licensed 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. * * Contributors: * Nuxeo - initial API and implementation * */ package org.nuxeo.ecm.core.convert.plugins.text.extractors; import java.io.Serializable; import java.util.Map; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.nuxeo.ecm.core.api.Blobs; import org.nuxeo.ecm.core.api.blobholder.BlobHolder; import org.nuxeo.ecm.core.api.blobholder.SimpleBlobHolder; import org.nuxeo.ecm.core.convert.api.ConversionException; import org.nuxeo.ecm.core.convert.api.ConversionService; import org.nuxeo.ecm.core.convert.extension.Converter; import org.nuxeo.ecm.core.convert.extension.ConverterDescriptor; import org.nuxeo.runtime.api.Framework; /** * Converter that tries to find a way to extract full text content according to input mime-type. * * @author tiry */ public class FullTextConverter implements Converter { private static final String TEXT_PLAIN_MT = "text/plain"; private static final Log log = LogFactory.getLog(FullTextConverter.class); protected ConverterDescriptor descriptor; @Override public BlobHolder convert(BlobHolder blobHolder, Map<String, Serializable> parameters) throws ConversionException { String srcMT = blobHolder.getBlob().getMimeType(); if (TEXT_PLAIN_MT.equals(srcMT)) { // no need to convert ! return blobHolder; } ConversionService cs = Framework.getLocalService(ConversionService.class); String converterName = cs.getConverterName(srcMT, TEXT_PLAIN_MT); if (converterName != null) { if (converterName.equals(descriptor.getConverterName())) { // Should never happen ! log.debug("Existing from converter to avoid a loop"); return new SimpleBlobHolder(Blobs.createBlob("")); } return cs.convert(converterName, blobHolder, parameters); } else { log.debug("Unable to find full text extractor for source mime type" + srcMT); return new SimpleBlobHolder(Blobs.createBlob("")); } } @Override public void init(ConverterDescriptor descriptor) { this.descriptor = descriptor; } }