[3744] | 1 | /*
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| 2 | * MGQueryResult.java
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| 3 | * Copyright (C) 2002 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 | * 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.mg;
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| 20 |
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| 21 |
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| 22 | import java.util.Vector;
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| 23 |
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| 24 |
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| 25 | /** a java version of QueryResult for mg
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| 26 | *
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| 27 | * contains get methods for the java side, and simple
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| 28 | * set methods to be called from c side
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| 29 | *
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| 30 | */
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| 31 | public class MGQueryResult
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| 32 | {
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| 33 | /** the list of MGDocInfo */
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| 34 | protected Vector docs_ = null;
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| 35 | /** the list of MGTermInfo */
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| 36 | protected Vector terms_ = null;
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| 37 | /** the total number of docs found - not likely to be the size of docs_ */
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| 38 | protected long total_num_docs_ = 0;
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| 39 |
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| 40 |
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| 41 | MGQueryResult() {
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| 42 | docs_ = new Vector();
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| 43 | terms_ = new Vector();
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| 44 | }
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| 45 |
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| 46 |
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| 47 | /** clear the info from the last query
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| 48 | should be called before setting any new docs/terms */
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| 49 | public void clear() {
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| 50 | total_num_docs_ = 0;
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| 51 | docs_.clear();
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| 52 | terms_.clear();
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| 53 | }
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| 54 |
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[9874] | 55 | public boolean isClear() {
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| 56 | return (total_num_docs_ == 0 && docs_.isEmpty() && terms_.isEmpty());
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| 57 | }
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[3744] | 58 |
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| 59 | /** returns the result as a String - useful for printing out results */
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| 60 | public String toString()
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| 61 | {
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| 62 | String result = "";
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| 63 | result += "docs (ranks): ";
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| 64 | for (int i = 0; i < docs_.size(); i++) {
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| 65 | if (i > 0) result += ", ";
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| 66 | result += ((MGDocInfo) docs_.elementAt(i)).toString();
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| 67 | }
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| 68 | result += "\nterms: ";
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| 69 | for (int i = 0; i < terms_.size(); i++) {
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| 70 | if (i > 0) result += ", ";
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| 71 | result += ((MGTermInfo) terms_.elementAt(i)).toString();
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| 72 | }
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| 73 | result += "\nactual number of docs found = " + total_num_docs_;
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| 74 | return result;
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| 75 | }
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| 76 |
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| 77 |
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| 78 | /** a shorter representation - just terms and total docs - not the
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| 79 | individual docnums and ranks */
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| 80 | public String toShortString() {
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| 81 | String result = "";
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| 82 | result += "\nterms: ";
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| 83 | for (int i = 0; i < terms_.size(); i++) {
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| 84 | if (i > 0) result += ", ";
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| 85 | result += ((MGTermInfo) terms_.elementAt(i)).toString();
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| 86 | }
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| 87 | result += "\nactual number of docs found = "+total_num_docs_;
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| 88 | return result;
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| 89 | }
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| 90 |
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| 91 |
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| 92 | // set methods used by c++ code
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| 93 |
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| 94 | public void setTotalDocs(long num) {
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| 95 | total_num_docs_=num;
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| 96 | }
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| 97 |
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| 98 |
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| 99 | public void addDoc(long doc, float rank) {
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| 100 | MGDocInfo doc_info = new MGDocInfo(doc, rank);
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[10590] | 101 | ///ystem.out.println("(Java) Added doc " + doc_info);
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[3744] | 102 |
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| 103 | docs_.add(doc_info);
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| 104 | }
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| 105 |
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| 106 |
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[3794] | 107 | public void addTerm(String term, int stem)
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[3744] | 108 | {
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| 109 | MGTermInfo ti = new MGTermInfo();
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| 110 | ti.term_ = term;
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| 111 | ti.stem_method_ = stem;
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[3794] | 112 | terms_.add(ti);
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[10590] | 113 | ///ystem.out.println("(Java) Added term " + ti);
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[3794] | 114 | }
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| 115 |
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| 116 |
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| 117 | public void addEquivTerm(String term, String equivTerm,
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| 118 | long match, long freq)
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| 119 | {
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| 120 | // Find the term to add the equivalent to
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| 121 | MGTermInfo ti = null;
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| 122 | for (int i = (terms_.size() - 1); i >= 0; i--) {
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| 123 | ti = (MGTermInfo) terms_.elementAt(i);
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| 124 | // Found
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| 125 | if (ti.term_ == term) {
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| 126 | break;
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[3744] | 127 | }
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| 128 | }
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| 129 |
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[3794] | 130 | if (ti == null) {
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| 131 | System.err.println("Internal error: No term exists to add to.\n");
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| 132 | }
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| 133 | else {
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| 134 | ti.addEquivTerm(equivTerm, match, freq);
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[10590] | 135 | ///ystem.out.println("(Java) Added equivalent term " + equivTerm + ", match: " + match + ", freq: " + freq);
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[3794] | 136 | }
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[3744] | 137 | }
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| 138 |
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| 139 |
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| 140 | // Get methods for the java side - GS2MGSearch.java, GS2MGRetrieve.java
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| 141 | public Vector getDocs() {
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| 142 | return docs_;
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| 143 | }
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| 144 |
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| 145 |
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| 146 | public Vector getTerms() {
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| 147 | return terms_;
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| 148 | }
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| 149 |
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| 150 |
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| 151 | public long getTotalDocs() {
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| 152 | return total_num_docs_;
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| 153 | }
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| 154 | }
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| 155 |
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