/*
* Copyright (c) 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Florent Guillaume
*/
package org.eclipse.ecr.core.storage.sql.security;
import java.security.Principal;
import org.eclipse.ecr.core.query.sql.model.Operator;
import org.eclipse.ecr.core.query.sql.model.Predicate;
import org.eclipse.ecr.core.query.sql.model.Reference;
import org.eclipse.ecr.core.query.sql.model.SQLQuery;
import org.eclipse.ecr.core.query.sql.model.SQLQuery.Transformer;
import org.eclipse.ecr.core.query.sql.model.StringLiteral;
import org.eclipse.ecr.core.query.sql.model.WhereClause;
/**
* Dummy security policy denying all access to File objects with a query
* transformer.
*
* @author Florent Guillaume
*/
public class NoFile2SecurityPolicy extends NoFileSecurityPolicy {
@Override
public boolean isExpressibleInQuery() {
return true;
}
/**
* Transformer that adds {@code AND ecm:primaryType <> 'File'} to the query.
*/
public static class NoFileTransformer implements Transformer {
private static final long serialVersionUID = 1L;
public static final Predicate NO_FILE = new Predicate(new Reference(
"ecm:primaryType"), Operator.NOTEQ, new StringLiteral("File"));
@Override
public SQLQuery transform(Principal principal, SQLQuery query) {
WhereClause where = query.where;
Predicate predicate;
if (where == null || where.predicate == null) {
predicate = NO_FILE;
} else {
predicate = new Predicate(NO_FILE, Operator.AND,
where.predicate);
}
SQLQuery newQuery = new SQLQuery(query.select, query.from,
new WhereClause(predicate), query.groupBy, query.having,
query.orderBy, query.limit, query.offset);
return newQuery;
}
}
public static final Transformer NO_FILE_TRANSFORMER = new NoFileTransformer();
@Override
public Transformer getQueryTransformer() {
return NO_FILE_TRANSFORMER;
}
}