Revision 91
Added by higgins over 24 years ago
| src/edu/ucsb/nceas/metacat/MetaCatServlet.java | ||
|---|---|---|
| 3 | 3 |
* Purpose: A Class that implements a metadata catalog as a java Servlet |
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* Copyright: 2000 Regents of the University of California and the |
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* National Center for Ecological Analysis and Synthesis |
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* Authors: Matt Jones |
|
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* Authors: Matt Jones, Dan Higgins
|
|
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* |
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* Version: '$Id$' |
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*/ |
| ... | ... | |
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import oracle.xml.parser.v2.XMLDocumentFragment; |
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import oracle.xml.parser.v2.XSLProcessor; |
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import oracle.xml.parser.v2.*; //Oracle parser - DFH |
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import java.io.File; //DFH |
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import java.io.FileInputStream; //DFH |
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/** |
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* A metadata catalog server implemented as a Java Servlet |
| ... | ... | |
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* query -- actual query text (to go with 'action=query')<br> |
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* action=validate -- vallidate the xml contained in validatetext<br> |
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* valtext -- XML text to be validated |
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* action=getdatadoc -- retreive a stored datadocument //DFH |
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* datadoc -- data document name (id) //DFH |
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*/ |
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public class MetaCatServlet extends HttpServlet {
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|
| ... | ... | |
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String defaultDB = null; |
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String resultStyleURL = null; |
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String xmlcatalogfile = null; |
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String defaultdatapath = null; // path to directory where data files that can be downloaded will be stored |
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String executescript = null; // script to get data file and put it in defaultdocpath dir |
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PropertyResourceBundle options = null; |
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|
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/** |
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defaultDB = (String)options.handleGetObject("defaultDB");
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resultStyleURL = (String)options.handleGetObject("resultStyleURL");
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xmlcatalogfile = (String)options.handleGetObject("xmlcatalogfile");
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defaultdatapath = (String)options.handleGetObject("defaultdatapath");
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executescript = (String)options.handleGetObject("executescript");
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try {
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// Open a connection to the database |
| ... | ... | |
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handlePutDocumentAction(out, params, response); |
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} else if (action.equals("validate")) {
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handleValidateAction(out, params, response); |
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} else if (action.equals("getdatadoc")) {
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handleGetDataDocumentAction(out, params, response); |
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} else {
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out.println("Error: action not registered. Please report this error.");
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} |
| ... | ... | |
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return doctype; |
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} |
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/** |
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* Handle the document request and return the results |
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* to the requestor - DFH |
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*/ |
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private void handleGetDataDocumentAction(PrintWriter out, Hashtable params, HttpServletResponse response) {
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boolean error_flag = false; |
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String error_message = ""; |
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// Get the document indicated |
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String[] datadoc = (String[])params.get("datadoc");
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// defaultdatapath = "C:\\Temp\\"; // for testing only!!! |
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// executescript = "test.bat"; // for testing only!!! |
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// set content type and other response header fields first |
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response.setContentType("application/octet-stream");
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if (defaultdatapath!=null) {
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if(!defaultdatapath.endsWith(System.getProperty("file.separator"))) defaultdatapath=defaultdatapath+System.getProperty("file.separator");
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System.out.println("Path= "+defaultdatapath+datadoc[0]);
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if (executescript!=null) {
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String command = null; |
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File scriptfile = new File(executescript); |
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if (scriptfile.exists()) {
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command=executescript+" "+datadoc[0]; } // execute script includes path |
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else { // look in defaultdatapath
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command = defaultdatapath+executescript+" "+datadoc[0]; // on Win98 one MUST include the .bat extender |
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} |
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System.out.println(command); |
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try {
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Process proc = Runtime.getRuntime().exec(command); |
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proc.waitFor(); |
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} |
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catch (Exception eee) {
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System.out.println("Error running process!");
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error_flag = true; |
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error_message = "Error running process!";} |
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} // end executescript not null if |
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File datafile = new File(defaultdatapath+datadoc[0]); |
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try {
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FileInputStream fw = new FileInputStream(datafile); |
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int x; |
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while ((x = fw.read())!=-1) {
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out.write(x); } |
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fw.close(); |
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} |
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catch (Exception e) {
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System.out.println("Error in returning file\n"+e.getMessage());
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error_flag=true; |
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error_message = error_message+"\nError in returning file\n"+e.getMessage();} |
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} // end defaultdatapath not null if |
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} |
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|
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} |
| MetaCatServlet.java | ||
|---|---|---|
| 3 | 3 |
* Purpose: A Class that implements a metadata catalog as a java Servlet |
| 4 | 4 |
* Copyright: 2000 Regents of the University of California and the |
| 5 | 5 |
* National Center for Ecological Analysis and Synthesis |
| 6 |
* Authors: Matt Jones |
|
| 6 |
* Authors: Matt Jones, Dan Higgins
|
|
| 7 | 7 |
* |
| 8 | 8 |
* Version: '$Id$' |
| 9 | 9 |
*/ |
| ... | ... | |
| 40 | 40 |
import oracle.xml.parser.v2.XMLDocumentFragment; |
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import oracle.xml.parser.v2.XSLProcessor; |
| 42 | 42 |
import oracle.xml.parser.v2.*; //Oracle parser - DFH |
| 43 |
import java.io.File; //DFH |
|
| 44 |
import java.io.FileInputStream; //DFH |
|
| 43 | 45 |
|
| 44 | 46 |
/** |
| 45 | 47 |
* A metadata catalog server implemented as a Java Servlet |
| ... | ... | |
| 57 | 59 |
* query -- actual query text (to go with 'action=query')<br> |
| 58 | 60 |
* action=validate -- vallidate the xml contained in validatetext<br> |
| 59 | 61 |
* valtext -- XML text to be validated |
| 62 |
* action=getdatadoc -- retreive a stored datadocument //DFH |
|
| 63 |
* datadoc -- data document name (id) //DFH |
|
| 60 | 64 |
*/ |
| 61 | 65 |
public class MetaCatServlet extends HttpServlet {
|
| 62 | 66 |
|
| ... | ... | |
| 71 | 75 |
String defaultDB = null; |
| 72 | 76 |
String resultStyleURL = null; |
| 73 | 77 |
String xmlcatalogfile = null; |
| 78 |
String defaultdatapath = null; // path to directory where data files that can be downloaded will be stored |
|
| 79 |
String executescript = null; // script to get data file and put it in defaultdocpath dir |
|
| 74 | 80 |
PropertyResourceBundle options = null; |
| 75 | 81 |
|
| 76 | 82 |
/** |
| ... | ... | |
| 90 | 96 |
defaultDB = (String)options.handleGetObject("defaultDB");
|
| 91 | 97 |
resultStyleURL = (String)options.handleGetObject("resultStyleURL");
|
| 92 | 98 |
xmlcatalogfile = (String)options.handleGetObject("xmlcatalogfile");
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defaultdatapath = (String)options.handleGetObject("defaultdatapath");
|
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executescript = (String)options.handleGetObject("executescript");
|
|
| 93 | 101 |
|
| 94 | 102 |
try {
|
| 95 | 103 |
// Open a connection to the database |
| ... | ... | |
| 160 | 168 |
handlePutDocumentAction(out, params, response); |
| 161 | 169 |
} else if (action.equals("validate")) {
|
| 162 | 170 |
handleValidateAction(out, params, response); |
| 171 |
} else if (action.equals("getdatadoc")) {
|
|
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handleGetDataDocumentAction(out, params, response); |
|
| 163 | 173 |
} else {
|
| 164 | 174 |
out.println("Error: action not registered. Please report this error.");
|
| 165 | 175 |
} |
| ... | ... | |
| 356 | 366 |
|
| 357 | 367 |
return doctype; |
| 358 | 368 |
} |
| 369 |
|
|
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|
|
| 371 |
/** |
|
| 372 |
* Handle the document request and return the results |
|
| 373 |
* to the requestor - DFH |
|
| 374 |
*/ |
|
| 375 |
private void handleGetDataDocumentAction(PrintWriter out, Hashtable params, HttpServletResponse response) {
|
|
| 376 |
boolean error_flag = false; |
|
| 377 |
String error_message = ""; |
|
| 378 |
// Get the document indicated |
|
| 379 |
String[] datadoc = (String[])params.get("datadoc");
|
|
| 380 |
// defaultdatapath = "C:\\Temp\\"; // for testing only!!! |
|
| 381 |
// executescript = "test.bat"; // for testing only!!! |
|
| 382 |
|
|
| 383 |
// set content type and other response header fields first |
|
| 384 |
response.setContentType("application/octet-stream");
|
|
| 385 |
if (defaultdatapath!=null) {
|
|
| 386 |
if(!defaultdatapath.endsWith(System.getProperty("file.separator"))) defaultdatapath=defaultdatapath+System.getProperty("file.separator");
|
|
| 387 |
System.out.println("Path= "+defaultdatapath+datadoc[0]);
|
|
| 388 |
if (executescript!=null) {
|
|
| 389 |
String command = null; |
|
| 390 |
File scriptfile = new File(executescript); |
|
| 391 |
if (scriptfile.exists()) {
|
|
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command=executescript+" "+datadoc[0]; } // execute script includes path |
|
| 393 |
else { // look in defaultdatapath
|
|
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command = defaultdatapath+executescript+" "+datadoc[0]; // on Win98 one MUST include the .bat extender |
|
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} |
|
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System.out.println(command); |
|
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try {
|
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Process proc = Runtime.getRuntime().exec(command); |
|
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proc.waitFor(); |
|
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} |
|
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catch (Exception eee) {
|
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System.out.println("Error running process!");
|
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error_flag = true; |
|
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error_message = "Error running process!";} |
|
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} // end executescript not null if |
|
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File datafile = new File(defaultdatapath+datadoc[0]); |
|
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try {
|
|
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FileInputStream fw = new FileInputStream(datafile); |
|
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int x; |
|
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while ((x = fw.read())!=-1) {
|
|
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out.write(x); } |
|
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fw.close(); |
|
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|
|
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} |
|
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catch (Exception e) {
|
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System.out.println("Error in returning file\n"+e.getMessage());
|
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error_flag=true; |
|
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error_message = error_message+"\nError in returning file\n"+e.getMessage();} |
|
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} // end defaultdatapath not null if |
|
| 420 |
} |
|
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|
|
| 422 |
|
|
| 359 | 423 |
} |
| lib/metacat.properties | ||
|---|---|---|
| 1 | 1 |
# |
| 2 | 2 |
# Properties file defining options for the MetaCatServlet.java servlet |
| 3 |
# Matt Jones |
|
| 3 |
# Matt Jones, Dan Higgins
|
|
| 4 | 4 |
# '$Id$' |
| 5 | 5 |
# |
| 6 | 6 |
user=jones |
| ... | ... | |
| 9 | 9 |
dbDriver=oracle.jdbc.driver.OracleDriver |
| 10 | 10 |
resultStyleURL=file:///home/httpd/html/xmltodb/resultset.xsl |
| 11 | 11 |
xmlcatalogfile=/home/httpd/html/xmltodb/catalog.txt |
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defaultdatapath=C:\Temp\ |
|
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executescript=test.bat |
|
| metacat.properties | ||
|---|---|---|
| 1 | 1 |
# |
| 2 | 2 |
# Properties file defining options for the MetaCatServlet.java servlet |
| 3 |
# Matt Jones |
|
| 3 |
# Matt Jones, Dan Higgins
|
|
| 4 | 4 |
# '$Id$' |
| 5 | 5 |
# |
| 6 | 6 |
user=jones |
| ... | ... | |
| 9 | 9 |
dbDriver=oracle.jdbc.driver.OracleDriver |
| 10 | 10 |
resultStyleURL=file:///home/httpd/html/xmltodb/resultset.xsl |
| 11 | 11 |
xmlcatalogfile=/home/httpd/html/xmltodb/catalog.txt |
| 12 |
defaultdatapath=C:\Temp\ |
|
| 13 |
executescript=test.bat |
|
Also available in: Unified diff
Update to handle retreival of datafile from server