| /* |
| * Copyright 2004-2005 The Apache Software Foundation or its licensors, |
| * as applicable. |
| * |
| * 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. |
| */ |
| package org.apache.jackrabbit.core.query; |
| |
| import java.io.IOException; |
| import java.io.StringReader; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import javax.jcr.RepositoryException; |
| import javax.swing.text.BadLocationException; |
| import javax.swing.text.DefaultStyledDocument; |
| import javax.swing.text.rtf.RTFEditorKit; |
| |
| import org.apache.jackrabbit.core.query.lucene.FieldNames; |
| import org.apache.jackrabbit.core.state.PropertyState; |
| import org.apache.jackrabbit.core.value.BLOBFileValue; |
| import org.apache.jackrabbit.core.value.InternalValue; |
| |
| /** |
| * Extracts texts from RTF documents. |
| */ |
| public class RTFTextFilter implements TextFilter { |
| |
| private RTFEditorKit rek = new RTFEditorKit(); |
| private DefaultStyledDocument doc = new DefaultStyledDocument(); |
| |
| /** |
| * @return <code>true</code> for <code>application/rtf</code>, |
| * <code>false</code> otherwise. |
| */ |
| public boolean canFilter(String mimeType) { |
| return "application/rtf".equalsIgnoreCase(mimeType); |
| } |
| |
| /** |
| * Returns a map with a single entry for field {@link FieldNames#FULLTEXT}. |
| * |
| * @param data object containing RTF document data |
| * @param encoding text encoding is not used, since it is specified in the |
| * data. |
| * @return a map with a single Reader value for field {@link |
| * FieldNames#FULLTEXT}. |
| * @throws RepositoryException if data is a multi-value property or if the |
| * content can't be extracted |
| */ |
| public Map doFilter(PropertyState data, String encoding) |
| throws RepositoryException { |
| |
| InternalValue[] values = data.getValues(); |
| if (values.length > 0) { |
| try { |
| BLOBFileValue blob = (BLOBFileValue) values[0].internalValue(); |
| |
| doc.remove(0, doc.getLength()); |
| rek.read(blob.getStream(), doc, 0); |
| String text = doc.getText(0, doc.getLength()); |
| |
| Map result = new HashMap(); |
| result.put(FieldNames.FULLTEXT, new StringReader(text)); |
| return result; |
| } catch (BadLocationException ble) { |
| throw new RepositoryException(ble); |
| } catch (IOException ioe) { |
| throw new RepositoryException(ioe); |
| } catch (IllegalStateException e) { |
| throw new RepositoryException(e); |
| } |
| } else { |
| // multi value not supported |
| throw new RepositoryException("Multi-valued binary properties not supported."); |
| } |
| } |
| } |