/*
* 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.Iterator;
import java.util.List;
import org.modeshape.schematic.document.Document;
import org.modeshape.common.util.StringUtil;
import org.modeshape.jcr.spi.federation.DocumentWriter;
/**
* Base class for converting DB Metadata to connector documents.
*
* @author Horia Chiorean (hchiorea@redhat.com)
*/
public abstract class AbstractMetadataRetriever {
protected JdbcMetadataConnector connector;
protected AbstractMetadataRetriever( JdbcMetadataConnector connector ) {
this.connector = connector;
}
protected static String generateId( String prefix,
String... segments ) {
StringBuilder builder = new StringBuilder(prefix);
for (String segment : segments) {
builder.append("@").append(segment);
}
return builder.toString();
}
protected List<String> removeEmptyOrNullElements(List<String> list) {
for (Iterator<String> it = list.iterator(); it.hasNext(); ) {
if (StringUtil.isBlank(it.next())) {
it.remove();
}
}
return list;
}
protected abstract Document getDocumentById( String id,
DocumentWriter writer,
Connection connection );
protected abstract String idFrom( String path );
protected abstract boolean canHandle( String id );
}