[3649] | 1 | /*
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| 2 | * GS2MGPPRetrieve.java
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[8959] | 3 | * Copyright (C) 2005 New Zealand Digital Library, http://www.nzdl.org
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[3649] | 4 | *
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| 5 | * This program is free software; you can redistribute it and/or modify
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| 6 | * it under the terms of the GNU General Public License as published by
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| 7 | * the Free Software Foundation; either version 2 of the License, or
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| 8 | * (at your option) any later version.
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| 9 | *
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| 10 | * This program is distributed in the hope that it will be useful,
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | * GNU General Public License for more details.
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| 14 | *
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| 15 | * You should have received a copy of the GNU General Public License
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| 16 | * along with this program; if not, write to the Free Software
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| 17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 18 | */
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| 19 | package org.greenstone.gsdl3.service;
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| 20 |
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[3799] | 21 | // Greenstone classes
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[3649] | 22 | import org.greenstone.mgpp.*;
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[9874] | 23 | import org.greenstone.gsdl3.core.GSException;
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[8959] | 24 | import org.greenstone.gsdl3.util.GSFile;
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| 25 | import org.greenstone.gsdl3.util.GSXML;
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[3649] | 26 |
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[3799] | 27 | // XML classes
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[8959] | 28 | import org.w3c.dom.Element;
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| 29 | import org.w3c.dom.Text;
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[3649] | 30 |
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[3952] | 31 | // General Java classes
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| 32 | import java.io.File;
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[3649] | 33 |
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[13124] | 34 | import org.apache.log4j.*;
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| 35 |
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[8959] | 36 | public class GS2MGPPRetrieve
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[14441] | 37 | extends AbstractGS2DocumentRetrieve {
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| 38 | static Logger logger = Logger.getLogger(org.greenstone.gsdl3.service.GS2MGPPRetrieve.class.getName());
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| 39 |
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| 40 | // Parameters used
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| 41 | private static final String LEVEL_PARAM = "level";
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| 42 |
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| 43 | // Elements used in the config file that are specific to this class
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| 44 | private static final String DEFAULT_LEVEL_ELEM = "defaultLevel";
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| 45 |
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| 46 | private static MGPPRetrieveWrapper mgpp_src = null;
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| 47 |
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| 48 | private String default_level = null;
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| 49 | private String mgpp_textdir = null;
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| 50 |
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| 51 | public GS2MGPPRetrieve() {
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| 52 | if(mgpp_src == null) {
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| 53 | mgpp_src = new MGPPRetrieveWrapper();
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| 54 | }
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| 55 | }
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| 56 |
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| 57 | public void cleanUp() {
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| 58 | super.cleanUp();
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| 59 | mgpp_src.unloadIndexData();
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| 60 | }
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| 61 |
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| 62 | /** configure this service */
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| 63 | public boolean configure(Element info, Element extra_info) {
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| 64 | if (!super.configure(info, extra_info)){
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| 65 | return false;
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| 66 | }
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[3649] | 67 |
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[14441] | 68 | // Do specific configuration
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| 69 | logger.info("Configuring GS2MGPPRetrieve...");
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| 70 |
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| 71 | // Get the default level out of <defaultLevel> (buildConfig.xml)
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| 72 | Element def = (Element) GSXML.getChildByTagName(info, DEFAULT_LEVEL_ELEM);
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| 73 | if (def != null) {
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| 74 | this.default_level = def.getAttribute(GSXML.SHORTNAME_ATT);
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[3799] | 75 | }
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[14441] | 76 | if (this.default_level == null || this.default_level.equals("")) {
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| 77 | logger.error("default level not specified!");
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| 78 | return false;
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[9874] | 79 | }
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[3901] | 80 |
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[14441] | 81 | // The location of the MGPP text files
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| 82 | mgpp_textdir = GSFile.collectionBaseDir(this.site_home, this.cluster_name) +
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| 83 | File.separatorChar + GSFile.collectionTextPath(this.index_stem);
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| 84 |
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| 85 | // Do generic configuration
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| 86 | return true;
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| 87 |
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| 88 | }
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| 89 |
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| 90 | /** returns the content of a node
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| 91 | * should return a nodeContent element:
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| 92 | * <nodeContent>text content or other elements</nodeContent>
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| 93 | */
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| 94 | protected Element getNodeContent(String doc_id, String lang) throws GSException {
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[15787] | 95 | long doc_num = this.coll_db.OID2DocnumLong(doc_id);
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[14441] | 96 | if (doc_num == -1) {
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| 97 | logger.error("OID "+doc_id +" couldn't be converted to mgpp num");
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| 98 | return null;
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[8959] | 99 | }
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[14441] | 100 | Element content_node = this.doc.createElement(GSXML.NODE_CONTENT_ELEM);
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| 101 | synchronized (mgpp_src) {
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| 102 | String doc_content = "";
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| 103 | try {
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| 104 |
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| 105 | doc_content = mgpp_src.getDocument(this.mgpp_textdir,
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| 106 | this.default_level,
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| 107 | doc_num);
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| 108 |
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| 109 | if (doc_content != null) {
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| 110 | doc_content = resolveTextMacros(doc_content, doc_id, lang);
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| 111 | }
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| 112 |
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| 113 | } catch (Exception e) {
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| 114 | logger.info("exception happended with mgpp_src.getDocument()" + e);
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| 115 | doc_content = "this is the content for section hash id "+ doc_id+", mgpp doc num "+doc_num+"\n";
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| 116 |
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| 117 | }
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| 118 | Text t = this.doc.createTextNode(doc_content);
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| 119 | content_node.appendChild(t);
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| 120 | return content_node;
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| 121 | }//end of synchronized
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| 122 | }
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| 123 |
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| 124 |
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[3649] | 125 | }
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