/*
* ModeShape (http://www.modeshape.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.modeshape.connector.meta.jdbc;
import java.sql.Connection;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.modeshape.schematic.document.Document;
import org.modeshape.jcr.JcrNtLexicon;
import org.modeshape.jcr.spi.federation.DocumentWriter;
/**
* Class which converts catalog metadata to connector documents.
*
* @author Horia Chiorean (hchiorea@redhat.com)
*/
public class CatalogRetriever extends AbstractMetadataRetriever {
private static final Pattern CATALOG_PATH_PATTERN = Pattern.compile("/([^/]+)/([^/]+)");
private static final Pattern CATALOG_ID_PATTERN = Pattern.compile("([^@]+)@([^@]+)");
protected CatalogRetriever( JdbcMetadataConnector connector ) {
super(connector);
}
@Override
protected Document getDocumentById( String id,
DocumentWriter writer,
Connection connection ) {
writer.setPrimaryType(JcrNtLexicon.UNSTRUCTURED);
writer.addMixinType(JdbcMetadataLexicon.CATALOG);
writer.setParent(DatabaseRetriever.ID);
String catalogId = catalogIdFrom(id);
MetadataCollector metadataCollector = connector.getMetadataCollector();
List<String> schemaNames = catalogId.equalsIgnoreCase(connector.getDefaultCatalogName()) ?
metadataCollector.getSchemaNames(connection, catalogId) :
metadataCollector.getSchemaNames(connection, null);
schemaNames = removeEmptyOrNullElements(schemaNames);
if (schemaNames.isEmpty()) {
schemaNames.add(connector.getDefaultSchemaName());
}
for (String schemaName : schemaNames) {
String schemaDocumentId = SchemaRetriever.documentId(DatabaseRetriever.ID, catalogId, schemaName, false, false);
writer.addChild(schemaDocumentId, schemaName);
}
return writer.document();
}
@Override
protected String idFrom( String path ) {
Matcher matcher = CATALOG_PATH_PATTERN.matcher(path);
if (!matcher.matches()) {
return null;
}
return documentId(matcher.group(1), matcher.group(2));
}
@Override
protected boolean canHandle( String id ) {
return CATALOG_ID_PATTERN.matcher(id).matches();
}
private String catalogIdFrom( String id ) {
Matcher matcher = CATALOG_ID_PATTERN.matcher(id);
matcher.matches();
return matcher.group(2);
}
static String documentId( String databaseId,
String catalogId ) {
return generateId(databaseId, catalogId);
}
}