Revision 5945
Added by Jing Tao about 13 years ago
| src/edu/ucsb/nceas/metacat/SchemaLocationResolver.java | ||
|---|---|---|
| 29 | 29 |
|
| 30 | 30 |
|
| 31 | 31 |
import java.sql.*; |
| 32 |
import java.util.Vector; |
|
| 32 | 33 |
import java.io.File; |
| 33 | 34 |
import java.io.BufferedInputStream; |
| 34 | 35 |
import java.io.FileWriter; |
| ... | ... | |
| 37 | 38 |
import java.io.IOException; |
| 38 | 39 |
|
| 39 | 40 |
import org.apache.log4j.Logger; |
| 41 |
import org.xml.sax.SAXException; |
|
| 40 | 42 |
|
| 41 | 43 |
import edu.ucsb.nceas.metacat.database.DBConnection; |
| 42 | 44 |
import edu.ucsb.nceas.metacat.database.DBConnectionPool; |
| 43 | 45 |
import edu.ucsb.nceas.metacat.service.ServiceService; |
| 46 |
import edu.ucsb.nceas.metacat.service.XMLSchemaParser; |
|
| 44 | 47 |
import edu.ucsb.nceas.metacat.service.XMLSchemaService; |
| 45 | 48 |
import edu.ucsb.nceas.metacat.util.SystemUtil; |
| 49 |
import edu.ucsb.nceas.utilities.PropertyNotFoundException; |
|
| 46 | 50 |
|
| 47 | 51 |
/** |
| 48 | 52 |
* A database aware Class to handle schema location. If namespace is in the |
| ... | ... | |
| 104 | 108 |
{
|
| 105 | 109 |
|
| 106 | 110 |
// upload schema into metacat |
| 107 |
InputStream in = DBEntityResolver.checkURLConnection(schemaLocation); |
|
| 108 |
|
|
| 109 |
String newURLInMetacat = uploadSchemaFromURL(in); |
|
| 111 |
String newURLInMetacat = uploadSchemaFromURL(schemaLocation); |
|
| 110 | 112 |
ServiceService.refreshService("XMLSchemaService");
|
| 111 | 113 |
|
| 112 | 114 |
// check the name space list again. It may not have appeared the first time |
| ... | ... | |
| 118 | 120 |
ServiceService.refreshService("XMLSchemaService");
|
| 119 | 121 |
} |
| 120 | 122 |
downloadNewSchema = true; |
| 121 |
|
|
| 123 |
//handle included schema in above schema |
|
| 124 |
String externalBaseURL = XMLSchemaService.getBaseUrlFromSchemaURL(schemaLocation); |
|
| 125 |
//System.out.println("==========the externalBaseURL is "+externalBaseURL);
|
|
| 126 |
handleIncludedSchema(newURLInMetacat, externalBaseURL); |
|
| 122 | 127 |
} |
| 123 | 128 |
catch(Exception e) |
| 124 | 129 |
{
|
| ... | ... | |
| 129 | 134 |
}//if |
| 130 | 135 |
|
| 131 | 136 |
} |
| 137 |
|
|
| 138 |
/* |
|
| 139 |
* Some schemas (parent schema)also include other schemas (children) in |
|
| 140 |
* its definition. The syntax is: <xsd:include schemaLocation="product.xsd"/> |
|
| 141 |
* The included schemas need to be downloaded as well. |
|
| 142 |
* The included schemas always have the same target namespace. So there |
|
| 143 |
* is no need to register the schema into xml_catalog table. |
|
| 144 |
* Note: the included schemas may have included schemas (grandchildren) as well. |
|
| 145 |
*/ |
|
| 146 |
private void handleIncludedSchema(String parentSchemaNewURLInMetacat, |
|
| 147 |
String externalBaseURL) |
|
| 148 |
throws SAXException, IOException,PropertyNotFoundException |
|
| 149 |
{
|
|
| 150 |
//Gets the included schema information from parent schema |
|
| 151 |
//System.out.println("the parent schema new url in metacat ============="+parentSchemaNewURLInMetacat);
|
|
| 152 |
if(externalBaseURL != null) |
|
| 153 |
{
|
|
| 154 |
InputStream in = DBEntityResolver.checkURLConnection(SystemUtil.getContextURL()+parentSchemaNewURLInMetacat); |
|
| 155 |
XMLSchemaParser parser = new XMLSchemaParser(in); |
|
| 156 |
parser.parse(); |
|
| 157 |
Vector<String> includedSchemaPaths = parser.getIncludedSchemaFilePathes(); |
|
| 158 |
//System.out.println("the include schema paths is ============ "+includedSchemaPaths);
|
|
| 159 |
if(includedSchemaPaths!= null) |
|
| 160 |
{
|
|
| 161 |
for(int i=0; i<includedSchemaPaths.size(); i++) |
|
| 162 |
{
|
|
| 163 |
String schemaFilePath = includedSchemaPaths.elementAt(i); |
|
| 164 |
//System.out.println("start to handle the included path ========="+schemaFilePath);
|
|
| 165 |
try |
|
| 166 |
{
|
|
| 167 |
String newShemaURLInMetacat = |
|
| 168 |
uploadSchemaFromURL(externalBaseURL+schemaFilePath); |
|
| 169 |
//System.out.println("success download the included schema and new url is ========="+newShemaURLInMetacat);
|
|
| 170 |
//recursively download the included schema |
|
| 171 |
handleIncludedSchema(newShemaURLInMetacat, externalBaseURL); |
|
| 172 |
} |
|
| 173 |
catch(Exception e) |
|
| 174 |
{
|
|
| 175 |
logMetacat.warn("Warning on SchemaLocationResolver.handleIncludedSchema"+e.getMessage());
|
|
| 176 |
} |
|
| 177 |
|
|
| 178 |
} |
|
| 179 |
} |
|
| 180 |
} |
|
| 181 |
|
|
| 182 |
} |
|
| 132 | 183 |
|
| 133 | 184 |
/** |
| 134 | 185 |
* Upload new Schema located at outside URL to Metacat file system |
| 135 | 186 |
*/ |
| 136 |
private String uploadSchemaFromURL(InputStream istream) throws Exception
|
|
| 187 |
private String uploadSchemaFromURL(String schemaLocationURL) throws Exception
|
|
| 137 | 188 |
{
|
| 138 | 189 |
|
| 139 |
String relativeSchemaPath = XMLSchemaService.SCHEMA_DIR; |
|
| 190 |
String relativeSchemaPath = XMLSchemaService.SCHEMA_DIR;
|
|
| 140 | 191 |
String fullSchemaPath = SystemUtil.getContextDir() + relativeSchemaPath; |
| 141 | 192 |
String schemaURL = SystemUtil.getContextURL() + relativeSchemaPath; |
| 142 | 193 |
|
| 143 | 194 |
// get filename from systemId |
| 144 |
String filename = XMLSchemaService.getSchemaFileNameFromUri(schemaLocation); |
|
| 195 |
String filename = XMLSchemaService.getSchemaFileNameFromUri(schemaLocationURL);
|
|
| 145 | 196 |
|
| 146 | 197 |
if (filename != null && !(filename.trim()).equals(""))
|
| 147 | 198 |
{
|
| ... | ... | |
| 157 | 208 |
} |
| 158 | 209 |
// writing schema text on Metacat file system as filename |
| 159 | 210 |
try {
|
| 211 |
InputStream istream = DBEntityResolver.checkURLConnection(schemaLocationURL); |
|
| 160 | 212 |
// create a buffering character-input stream |
| 161 | 213 |
// that uses a default-sized input buffer |
| 162 | 214 |
BufferedInputStream in = new BufferedInputStream(istream); |
Also available in: Unified diff
Add code to download the included schema.