Revision 5945
Added by Jing Tao almost 14 years ago
| src/edu/ucsb/nceas/metacat/SchemaLocationResolver.java | ||
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import java.sql.*; |
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import java.util.Vector; |
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import java.io.File; |
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import java.io.BufferedInputStream; |
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import java.io.FileWriter; |
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import java.io.IOException; |
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import org.apache.log4j.Logger; |
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import org.xml.sax.SAXException; |
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import edu.ucsb.nceas.metacat.database.DBConnection; |
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import edu.ucsb.nceas.metacat.database.DBConnectionPool; |
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import edu.ucsb.nceas.metacat.service.ServiceService; |
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import edu.ucsb.nceas.metacat.service.XMLSchemaParser; |
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import edu.ucsb.nceas.metacat.service.XMLSchemaService; |
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import edu.ucsb.nceas.metacat.util.SystemUtil; |
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import edu.ucsb.nceas.utilities.PropertyNotFoundException; |
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/** |
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* A database aware Class to handle schema location. If namespace is in the |
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{
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// upload schema into metacat |
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InputStream in = DBEntityResolver.checkURLConnection(schemaLocation); |
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String newURLInMetacat = uploadSchemaFromURL(in); |
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String newURLInMetacat = uploadSchemaFromURL(schemaLocation); |
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ServiceService.refreshService("XMLSchemaService");
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// check the name space list again. It may not have appeared the first time |
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ServiceService.refreshService("XMLSchemaService");
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} |
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downloadNewSchema = true; |
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//handle included schema in above schema |
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String externalBaseURL = XMLSchemaService.getBaseUrlFromSchemaURL(schemaLocation); |
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//System.out.println("==========the externalBaseURL is "+externalBaseURL);
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handleIncludedSchema(newURLInMetacat, externalBaseURL); |
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} |
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catch(Exception e) |
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{
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}//if |
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} |
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/* |
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* Some schemas (parent schema)also include other schemas (children) in |
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* its definition. The syntax is: <xsd:include schemaLocation="product.xsd"/> |
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* The included schemas need to be downloaded as well. |
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* The included schemas always have the same target namespace. So there |
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* is no need to register the schema into xml_catalog table. |
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* Note: the included schemas may have included schemas (grandchildren) as well. |
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*/ |
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private void handleIncludedSchema(String parentSchemaNewURLInMetacat, |
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String externalBaseURL) |
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throws SAXException, IOException,PropertyNotFoundException |
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{
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//Gets the included schema information from parent schema |
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//System.out.println("the parent schema new url in metacat ============="+parentSchemaNewURLInMetacat);
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if(externalBaseURL != null) |
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{
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InputStream in = DBEntityResolver.checkURLConnection(SystemUtil.getContextURL()+parentSchemaNewURLInMetacat); |
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XMLSchemaParser parser = new XMLSchemaParser(in); |
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parser.parse(); |
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Vector<String> includedSchemaPaths = parser.getIncludedSchemaFilePathes(); |
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//System.out.println("the include schema paths is ============ "+includedSchemaPaths);
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if(includedSchemaPaths!= null) |
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{
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for(int i=0; i<includedSchemaPaths.size(); i++) |
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{
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String schemaFilePath = includedSchemaPaths.elementAt(i); |
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//System.out.println("start to handle the included path ========="+schemaFilePath);
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try |
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{
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String newShemaURLInMetacat = |
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uploadSchemaFromURL(externalBaseURL+schemaFilePath); |
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//System.out.println("success download the included schema and new url is ========="+newShemaURLInMetacat);
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//recursively download the included schema |
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handleIncludedSchema(newShemaURLInMetacat, externalBaseURL); |
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} |
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catch(Exception e) |
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{
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logMetacat.warn("Warning on SchemaLocationResolver.handleIncludedSchema"+e.getMessage());
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} |
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} |
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} |
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} |
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} |
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/** |
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* Upload new Schema located at outside URL to Metacat file system |
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*/ |
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private String uploadSchemaFromURL(InputStream istream) throws Exception
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private String uploadSchemaFromURL(String schemaLocationURL) throws Exception
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{
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String relativeSchemaPath = XMLSchemaService.SCHEMA_DIR; |
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String relativeSchemaPath = XMLSchemaService.SCHEMA_DIR;
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String fullSchemaPath = SystemUtil.getContextDir() + relativeSchemaPath; |
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String schemaURL = SystemUtil.getContextURL() + relativeSchemaPath; |
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// get filename from systemId |
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String filename = XMLSchemaService.getSchemaFileNameFromUri(schemaLocation); |
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String filename = XMLSchemaService.getSchemaFileNameFromUri(schemaLocationURL);
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if (filename != null && !(filename.trim()).equals(""))
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{
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} |
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// writing schema text on Metacat file system as filename |
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try {
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InputStream istream = DBEntityResolver.checkURLConnection(schemaLocationURL); |
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// create a buffering character-input stream |
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// that uses a default-sized input buffer |
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BufferedInputStream in = new BufferedInputStream(istream); |
Also available in: Unified diff
Add code to download the included schema.