[9002] | 1 | /*
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| 2 | * GS3MGPPSearch.java
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| 3 | * Copyright (C) 2005 New Zealand Digital Library, http://www.nzdl.org
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| 4 | *
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| 5 | * This program is free software; you can redistribute it and/or modify
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| 6 | * the Free Software Foundation; either version 2 of the License, or
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| 7 | * (at your option) any later version.
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| 8 | *
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| 9 | * This program is distributed in the hope that it will be useful,
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 12 | * GNU General Public License for more details.
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| 13 | *
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| 14 | * You should have received a copy of the GNU General Public License
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| 15 | * along with this program; if not, write to the Free Software
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| 16 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 17 | */
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| 18 | package org.greenstone.gsdl3.service;
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| 19 |
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| 20 | // Greenstone classes
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| 21 | import org.greenstone.mg.*;
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| 22 | import org.greenstone.gsdl3.util.GSXML;
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| 23 | import org.greenstone.gsdl3.util.GS3OID;
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| 24 | import org.greenstone.gsdl3.util.SQLQuery;
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| 25 |
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| 26 | // XML classes
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| 27 | import org.w3c.dom.Document;
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| 28 | import org.w3c.dom.Element;
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| 29 | import org.w3c.dom.NodeList;
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| 30 |
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| 31 | // java classes
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| 32 | import java.io.File;
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| 33 |
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| 34 |
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| 35 | /**
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| 36 | *
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| 37 | * @author <a href="mailto:[email protected]">Katherine Don</a>
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| 38 | */
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| 39 |
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| 40 | public class GS3MGPPSearch
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| 41 | extends AbstractMGPPSearch
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| 42 | {
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| 43 | protected SQLQuery database = null;
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| 44 | /** the base index prefix */
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| 45 | protected String base_index_prefix = null;
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| 46 |
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| 47 |
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| 48 | /** constructor */
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| 49 | public GS3MGPPSearch()
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| 50 | {
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| 51 | this.database = new SQLQuery();
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| 52 | }
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| 53 |
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[9874] | 54 | public void cleanUp() {
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| 55 | super.cleanUp();
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| 56 | this.database.closeConnection();
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| 57 | }
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| 58 |
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[9002] | 59 | /** configure this service */
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| 60 | public boolean configure(Element info, Element extra_info)
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| 61 | {
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[10093] | 62 | if (!super.configure(info, extra_info)){
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| 63 | return false;
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| 64 | }
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| 65 |
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[9002] | 66 | // get the base prefix
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| 67 | Element def = (Element) GSXML.getChildByTagName(info, "baseIndexPrefix");
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| 68 | if (def != null) {
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| 69 | this.base_index_prefix = def.getAttribute(GSXML.NAME_ATT);
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| 70 | }
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| 71 | if (this.base_index_prefix == null || this.base_index_prefix.equals("")) {
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| 72 | System.err.println("Error: base index prefix not specified!");
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| 73 | return false;
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| 74 | }
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| 75 | String site_name = this.site_home.substring(this.site_home.lastIndexOf(File.separator)+1);
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| 76 | if (site_name.equals("")) {
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| 77 | System.err.println("GS3Search Error: Cannot extract the site name from site home: "+this.site_home);
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| 78 | return false;
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| 79 | }
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| 80 | if (!database.setDatabase(site_name+"_"+this.cluster_name)) {
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| 81 | System.err.println("GS3Search Error: Could not open SQL database!");
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| 82 | return false;
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| 83 | }
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| 84 |
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[10093] | 85 | return true;
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[9002] | 86 | }
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| 87 | /** returns the document type of the doc that the specified node
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| 88 | belongs to. should be one of
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| 89 | GSXML.DOC_TYPE_SIMPLE,
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| 90 | GSXML.DOC_TYPE_PAGED,
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| 91 | GSXML.DOC_TYPE_HIERARCHY
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| 92 | */
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| 93 | protected String getDocType(String node_id){
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| 94 | boolean hierarchical = false;
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| 95 | if (!GS3OID.isDocTop(node_id) || database.isHierarchicalDocument(node_id) ) {
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| 96 | hierarchical = true;
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| 97 | }
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| 98 | // what about paged???
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| 99 | if (!hierarchical) {
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| 100 | // a simple document
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| 101 | return GSXML.DOC_TYPE_SIMPLE;
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| 102 | } else {
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| 103 | // a hierarchical doc
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| 104 | return GSXML.DOC_TYPE_HIERARCHY;
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| 105 | }
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| 106 | // don't have paged yet.
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| 107 |
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| 108 | }
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| 109 |
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| 110 | /** returns true if the node has child nodes */
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| 111 | protected boolean hasChildren(String node_id){
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| 112 | return database.documentHasChildren(node_id);
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| 113 | }
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| 114 |
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| 115 | /** returns true if the node has a parent */
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| 116 | protected boolean hasParent(String node_id){
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| 117 | String parent = GS3OID.getParent(node_id);
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| 118 | if (parent.equals(node_id)) {
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| 119 | return false;
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| 120 | }
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| 121 | return true;
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| 122 | }
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| 123 |
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| 124 | /** convert MGPP internal id to Greenstone oid */
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| 125 | protected String MGPPNum2OID(long docnum)
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| 126 | {
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| 127 | String mg_id = this.base_index_prefix+"."+docnum;
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| 128 | String doc_id = database.MGNum2OID(mg_id);
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| 129 | // hack !!!
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| 130 | if (doc_id.endsWith("-All")) {
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| 131 | // get rid of the All bit
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| 132 | doc_id = doc_id.substring(0,doc_id.length()-4);
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| 133 | //doc_id=doc_id.replaceAll("All","1");
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| 134 | }
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| 135 | return doc_id;
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| 136 |
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| 137 | }
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| 138 |
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| 139 | }
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| 140 |
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| 141 |
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