Source Code Cross Referenced for StatCall.java in  » Workflow-Engines » pegasus-2.1.0 » org » griphyn » vdl » invocation » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Workflow Engines » pegasus 2.1.0 » org.griphyn.vdl.invocation 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * This file or a portion of this file is licensed under the terms of
003:         * the Globus Toolkit Public License, found in file ../GTPL, or at
004:         * http://www.globus.org/toolkit/download/license.html. This notice must
005:         * appear in redistributions of this file, with or without modification.
006:         *
007:         * Redistributions of this Software, with or without modification, must
008:         * reproduce the GTPL in: (1) the Software, or (2) the Documentation or
009:         * some other similar material which is provided with the Software (if
010:         * any).
011:         *
012:         * Copyright 1999-2004 University of Chicago and The University of
013:         * Southern California. All rights reserved.
014:         */
015:        package org.griphyn.vdl.invocation;
016:
017:        import java.util.*;
018:        import java.io.Writer;
019:        import java.io.IOException;
020:
021:        /**
022:         * This class is the container for a complete call to stat() or fstat().
023:         * It contains information about the file or descriptor. Optionally, it
024:         * may also contain some data from the file or descriptor. 
025:         *
026:         * @author Jens-S. Vöckler
027:         * @author Yong Zhao
028:         * @version $Revision: 50 $
029:         */
030:        public class StatCall extends Invocation // implements Cloneable
031:        {
032:            /**
033:             * optional handle for stat calls of the invocation record
034:             */
035:            private String m_handle;
036:
037:            /**
038:             * optional logical filename associated with this stat call
039:             */
040:            private String m_lfn;
041:
042:            /**
043:             * value of errno after calling any stat function, or -1 for failure.
044:             */
045:            private int m_errno;
046:
047:            /**
048:             * the object (fn,fd) that the stat call was taken on.
049:             */
050:            private File m_file;
051:
052:            /**
053:             * the stat information itself, only present for unfailed calls.
054:             */
055:            private StatInfo m_statinfo;
056:
057:            /**
058:             * Optional data gleaned from stdout or stderr.
059:             */
060:            private Data m_data;
061:
062:            /**
063:             * Default c'tor: Construct a hollow shell and allow further
064:             * information to be added later.
065:             */
066:            public StatCall() {
067:                m_handle = m_lfn = null;
068:                m_file = null;
069:                m_statinfo = null;
070:                m_data = null;
071:            }
072:
073:            /**
074:             * Construct a specific but empty stat call object. 
075:             * @param handle is the identifier to give this specific stat call. 
076:             */
077:            public StatCall(String handle) {
078:                m_handle = handle;
079:                m_lfn = null;
080:                m_file = null;
081:                m_statinfo = null;
082:                m_data = null;
083:            }
084:
085:            /**
086:             * Accessor
087:             *
088:             * @see #setHandle(String)
089:             */
090:            public String getHandle() {
091:                return this .m_handle;
092:            }
093:
094:            /**
095:             * Accessor.
096:             *
097:             * @param handle
098:             * @see #getHandle()
099:             */
100:            public void setHandle(String handle) {
101:                this .m_handle = handle;
102:            }
103:
104:            /**
105:             * Accessor
106:             *
107:             * @see #setLFN(String)
108:             */
109:            public String getLFN() {
110:                return this .m_lfn;
111:            }
112:
113:            /**
114:             * Accessor.
115:             *
116:             * @param lfn
117:             * @see #getLFN()
118:             */
119:            public void setLFN(String lfn) {
120:                this .m_lfn = lfn;
121:            }
122:
123:            /**
124:             * Accessor
125:             *
126:             * @see #setError(int)
127:             */
128:            public int getError() {
129:                return this .m_errno;
130:            }
131:
132:            /**
133:             * Accessor.
134:             *
135:             * @param errno
136:             * @see #getError()
137:             */
138:            public void setError(int errno) {
139:                this .m_errno = errno;
140:            }
141:
142:            /**
143:             * Accessor
144:             *
145:             * @see #setFile(File)
146:             */
147:            public File getFile() {
148:                return this .m_file;
149:            }
150:
151:            /**
152:             * Accessor.
153:             *
154:             * @param file
155:             * @see #getFile()
156:             */
157:            public void setFile(File file) {
158:                this .m_file = file;
159:            }
160:
161:            /**
162:             * Accessor
163:             *
164:             * @see #setStatInfo(StatInfo)
165:             */
166:            public StatInfo getStatInfo() {
167:                return this .m_statinfo;
168:            }
169:
170:            /**
171:             * Accessor.
172:             *
173:             * @param statinfo
174:             * @see #getStatInfo()
175:             */
176:            public void setStatInfo(StatInfo statinfo) {
177:                this .m_statinfo = statinfo;
178:            }
179:
180:            /**
181:             * Accessor
182:             *
183:             * @see #setData(String)
184:             */
185:            public Data getData() {
186:                return this .m_data;
187:            }
188:
189:            /**
190:             * Accessor.
191:             *
192:             * @param data
193:             * @see #getData()
194:             */
195:            public void setData(String data) {
196:                this .m_data = new Data(data);
197:            }
198:
199:            /**
200:             * Conversion accessor.
201:             *
202:             * @param data
203:             * @see #getData()
204:             * @see #setData( String )
205:             */
206:            public void setData(Data data) {
207:                this .m_data = data;
208:            }
209:
210:            /**
211:             * Converts the active state into something meant for human consumption.
212:             * The method will be called when recursively traversing the instance
213:             * tree. 
214:             *
215:             * @param stream is a stream opened and ready for writing. This can also
216:             * be a string stream for efficient output.
217:             */
218:            public void toString(Writer stream) throws IOException {
219:                throw new IOException(
220:                        "method not implemented, please contact vds-support@griphyn.org");
221:            }
222:
223:            /**
224:             * Dump the state of the current element as XML output. This function
225:             * traverses all sibling classes as necessary, and converts the data
226:             * into pretty-printed XML output. The stream interface should be able
227:             * to handle large output efficiently.
228:             *
229:             * @param stream is a stream opened and ready for writing. This can also
230:             * be a string stream for efficient output.
231:             * @param indent is a <code>String</code> of spaces used for pretty
232:             * printing. The initial amount of spaces should be an empty string.
233:             * The parameter is used internally for the recursive traversal.
234:             * If a <code>null</code> value is specified, no indentation nor
235:             * linefeeds will be generated. 
236:             * @param namespace is the XML schema namespace prefix. If neither
237:             * empty nor null, each element will be prefixed with this prefix,
238:             * and the root element will map the XML namespace. 
239:             * @exception IOException if something fishy happens to the stream.
240:             */
241:            public void toXML(Writer stream, String indent, String namespace)
242:                    throws IOException {
243:                String newline = System.getProperty("line.separator", "\r\n");
244:                String tag = (namespace != null && namespace.length() > 0) ? namespace
245:                        + ":statcall"
246:                        : "statcall";
247:
248:                // open tag
249:                if (indent != null && indent.length() > 0)
250:                    stream.write(indent);
251:                stream.write('<');
252:                stream.write(tag);
253:                writeAttribute(stream, " error=\"", Integer.toString(m_errno));
254:                if (m_handle != null)
255:                    writeAttribute(stream, " id=\"", m_handle);
256:                if (m_lfn != null)
257:                    writeAttribute(stream, " lfn=\"", m_lfn);
258:                stream.write('>');
259:                if (indent != null)
260:                    stream.write(newline);
261:
262:                // dump content
263:                String newindent = indent == null ? null : indent + "  ";
264:                m_file.toXML(stream, newindent, namespace);
265:                if (m_statinfo != null)
266:                    m_statinfo.toXML(stream, newindent, namespace);
267:                if (m_data != null)
268:                    m_data.toXML(stream, newindent, namespace);
269:
270:                // close tag
271:                if (indent != null && indent.length() > 0)
272:                    stream.write(indent);
273:                stream.write("</");
274:                stream.write(tag);
275:                stream.write('>');
276:                if (indent != null)
277:                    stream.write(newline);
278:            }
279:        }
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