1 | package org.greenstone.gatherer.shell;
|
---|
2 | /**
|
---|
3 | *#########################################################################
|
---|
4 | *
|
---|
5 | * A component of the Gatherer application, part of the Greenstone digital
|
---|
6 | * library suite from the New Zealand Digital Library Project at the
|
---|
7 | * University of Waikato, New Zealand.
|
---|
8 | *
|
---|
9 | * <BR><BR>
|
---|
10 | *
|
---|
11 | * Author: John Thompson, Greenstone Digital Library, University of Waikato
|
---|
12 | *
|
---|
13 | * <BR><BR>
|
---|
14 | *
|
---|
15 | * Copyright (C) 1999 New Zealand Digital Library Project
|
---|
16 | *
|
---|
17 | * <BR><BR>
|
---|
18 | *
|
---|
19 | * This program is free software; you can redistribute it and/or modify
|
---|
20 | * it under the terms of the GNU General Public License as published by
|
---|
21 | * the Free Software Foundation; either version 2 of the License, or
|
---|
22 | * (at your option) any later version.
|
---|
23 | *
|
---|
24 | * <BR><BR>
|
---|
25 | *
|
---|
26 | * This program is distributed in the hope that it will be useful,
|
---|
27 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
28 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
29 | * GNU General Public License for more details.
|
---|
30 | *
|
---|
31 | * <BR><BR>
|
---|
32 | *
|
---|
33 | * You should have received a copy of the GNU General Public License
|
---|
34 | * along with this program; if not, write to the Free Software
|
---|
35 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
36 | *########################################################################
|
---|
37 | */
|
---|
38 | import java.awt.Component;
|
---|
39 | import java.util.StringTokenizer;
|
---|
40 | import javax.swing.JProgressBar;
|
---|
41 | import org.greenstone.gatherer.Gatherer;
|
---|
42 | import org.greenstone.gatherer.shell.GShellProgressMonitor;
|
---|
43 | /** This implementation of <i>GShellProgressMonitor</i> is designed to parse and translate the progress of a import.pl call.
|
---|
44 | * @author John Thompson, Greenstone Digital Library, University of Waikato
|
---|
45 | * @version 2.1
|
---|
46 | */
|
---|
47 | public class GImportProgressMonitor
|
---|
48 | implements GShellProgressMonitor {
|
---|
49 | /** Indicates if the GUI has asked the process this object monitors to stop. */
|
---|
50 | private boolean stop = false;
|
---|
51 | private int file_num = 0;
|
---|
52 | /** The number of files expected to be scanned by this import process. */
|
---|
53 | private int num_files = 0;
|
---|
54 | /** This holds the number of documents actually processed by the import command, as garnered from the final block of text output. */
|
---|
55 | private int num_docs = 0;
|
---|
56 | /** The progress bar this monitor updates. */
|
---|
57 | private JProgressBar progress_bar;
|
---|
58 | /** The maximum value for this progress bar. */
|
---|
59 | static final private int MAX = 1000000;
|
---|
60 | /** The minimum value for this progress bar. */
|
---|
61 | static final private int MIN = 0;
|
---|
62 | /** A String fragment which is used to determine if the current output process line is referring to the number of documents actually processed by the import script. */
|
---|
63 | static final private String NUM_DOCS_PROCESSED = "processed and included in the collection";
|
---|
64 | /** The Sentinel value is the String fragment an output process line must start with to be considered a milestone. In this case we are counting directories, so the fragment refers to a directory scan. */
|
---|
65 | static final private String SENTINEL = "recplug - ";
|
---|
66 |
|
---|
67 | public GImportProgressMonitor() {
|
---|
68 | progress_bar = new JProgressBar();
|
---|
69 | progress_bar.setMaximum(MAX);
|
---|
70 | progress_bar.setMinimum(MIN);
|
---|
71 | progress_bar.setStringPainted(true);
|
---|
72 | progress_bar.setValue(MIN);
|
---|
73 | }
|
---|
74 |
|
---|
75 | /** Method to register a new progress bar with this monitor.
|
---|
76 | * @param progress_bar The new <strong>JProgressBar</strong>.
|
---|
77 | */
|
---|
78 | public void addProgressBar(JProgressBar progress_bar) {
|
---|
79 | this.progress_bar = progress_bar;
|
---|
80 | progress_bar.setMaximum(MAX);
|
---|
81 | progress_bar.setMinimum(MIN);
|
---|
82 | progress_bar.setValue(MIN);
|
---|
83 | }
|
---|
84 |
|
---|
85 | /** Determine the script exit value according to the progress monitor. This gets around a problem where several script failures actually result with a successful exit value.
|
---|
86 | * @return A <i>int</i> with a value of zero if and only if the script was successful.
|
---|
87 | */
|
---|
88 | public int exitValue() {
|
---|
89 | if(num_docs > 0) {
|
---|
90 | return 0;
|
---|
91 | }
|
---|
92 | return 1;
|
---|
93 | }
|
---|
94 |
|
---|
95 | /** Retrieve the number of documents recorded by the import monitor during the execution of the import scripts.
|
---|
96 | * @return An <i>int</i> giving the document number.
|
---|
97 | */
|
---|
98 | public int getNumberOfDocuments() {
|
---|
99 | return num_docs;
|
---|
100 | }
|
---|
101 |
|
---|
102 | /** Method to retrieve whatever control is being used as the progress indicator. Usually a <strong>JProgressBar</strong> but there may be others implemented later.
|
---|
103 | * @return A <strong>Component</strong> on which the progress of the process is being displayed.
|
---|
104 | */
|
---|
105 | public Component getProgress() {
|
---|
106 | return progress_bar;
|
---|
107 | }
|
---|
108 |
|
---|
109 | /** Method to determine the state of the stop flag, which may be set by the visual component that created this monitor.
|
---|
110 | * @return A <strong>boolean</strong> indicating if the process has been asked to stop.
|
---|
111 | */
|
---|
112 | public boolean hasSignalledStop() {
|
---|
113 | return stop;
|
---|
114 | }
|
---|
115 |
|
---|
116 | /** Inform the progress bar that it should programatically increment progress by one step. This is only called during the metadata archive extraction so each step should be (100 / 5) / num_docs. */
|
---|
117 | public void increment() {
|
---|
118 | if(num_docs > 0) {
|
---|
119 | progress_bar.setValue(progress_bar.getValue() + ((MAX / 5) / num_docs));
|
---|
120 | }
|
---|
121 | else {
|
---|
122 | progress_bar.setIndeterminate(true);
|
---|
123 | }
|
---|
124 | }
|
---|
125 |
|
---|
126 | /** This method is used to 'feed in' a line of text captured from the process.
|
---|
127 | * @param line A <strong>String</strong> of text captured from either standard out or standard error.
|
---|
128 | * TODO Everthing.
|
---|
129 | */
|
---|
130 | public void parse(String line_raw) {
|
---|
131 | progress_bar.setString("");
|
---|
132 | String line = line_raw.toLowerCase();
|
---|
133 | if (line.indexOf(SENTINEL) == 0) {
|
---|
134 | file_num = file_num + 1;
|
---|
135 | ///ystem.err.println("Done " + file_num + " of " + num_files + "...");
|
---|
136 | if (num_files > 0) {
|
---|
137 | progress_bar.setValue((4 * MAX * file_num) / (5 * num_files));
|
---|
138 | }
|
---|
139 | }
|
---|
140 | else if (line.indexOf(NUM_DOCS_PROCESSED) != -1) {
|
---|
141 | num_docs = -1;
|
---|
142 | StringTokenizer tokenizer = new StringTokenizer(line);
|
---|
143 | while(num_docs == -1 && tokenizer.hasMoreTokens()) {
|
---|
144 | String pos_num_docs_str = tokenizer.nextToken();
|
---|
145 | try {
|
---|
146 | num_docs = Integer.parseInt(pos_num_docs_str);
|
---|
147 | }
|
---|
148 | catch (Exception error) {
|
---|
149 | }
|
---|
150 | }
|
---|
151 | ///ystem.err.println("Parsed num_docs to be " + num_docs);
|
---|
152 | }
|
---|
153 | }
|
---|
154 |
|
---|
155 | public void saving() {
|
---|
156 | progress_bar.setIndeterminate(true);
|
---|
157 | progress_bar.setString(Gatherer.dictionary.get("SaveProgressDialog.Title", (String)null));
|
---|
158 | }
|
---|
159 |
|
---|
160 | /** Since the creator of this process monitor is actually in the GUI, this class provides the simpliest way to send a cancel process message between the two.
|
---|
161 | * @param state The desired state of the stop flag as a <strong>boolean</strong>.
|
---|
162 | */
|
---|
163 | public void setStop(boolean state) {
|
---|
164 | stop = state;
|
---|
165 | progress_bar.setIndeterminate(false);
|
---|
166 | }
|
---|
167 |
|
---|
168 | /** This method resets this monitor to the start, reseting the process parsing and progress bar.
|
---|
169 | * TODO Everthing.
|
---|
170 | */
|
---|
171 | public void start() {
|
---|
172 | progress_bar.setIndeterminate(true);
|
---|
173 | progress_bar.setString(Gatherer.dictionary.get("FileActions.Calculating_Size", (String)null));
|
---|
174 | progress_bar.setIndeterminate(false);
|
---|
175 | progress_bar.setValue(MIN);
|
---|
176 | num_files = Gatherer.c_man.getCollection().getDocumentCount();
|
---|
177 | ///ystem.err.println("Number of files: " + num_files);
|
---|
178 | file_num = 0;
|
---|
179 | }
|
---|
180 |
|
---|
181 | /** This method indicates the process is complete.
|
---|
182 | * TODO Everthing.
|
---|
183 | */
|
---|
184 | public void stop() {
|
---|
185 | progress_bar.setIndeterminate(false);
|
---|
186 | progress_bar.setValue(MAX);
|
---|
187 | }
|
---|
188 | }
|
---|