/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.oodt.cas.product.rdf;
//OODT imports
import org.apache.oodt.cas.filemgr.structs.ProductType;
import org.apache.oodt.cas.metadata.Metadata;
//JDK imports
import java.util.Properties;
/**
*
* Filters a {@link ProductType}, based on a set of constraints.
*
* @author mattmann
* @version $Revision$
*
*/
public class ProductTypeFilter {
private Properties constraints;
public ProductTypeFilter() {
this(null);
}
public ProductTypeFilter(String filter) {
this.constraints = new Properties();
if (filter != null)
this.parse(filter);
}
public void parse(String filter) {
if(filter == null) return;
String[] attrConstrs = filter.split(",");
for (String attrConstr : attrConstrs) {
String[] attrConstPair = attrConstr.split("\\:");
this.constraints.put(attrConstPair[0], attrConstPair[1]);
}
}
public boolean filter(ProductType type) {
if(this.constraints == null) return true;
if (type.getTypeMetadata() != null) {
Metadata typeMet = type.getTypeMetadata();
for (Object constraintObj : this.constraints.keySet()) {
String constraintName = (String) constraintObj;
String constraintValue = this.constraints.getProperty(constraintName);
if (!typeMet.containsKey(constraintName)) {
return false;
}
if (!typeMet.getMetadata(constraintName).equals(constraintValue)) {
return false;
}
}
return true;
} else {
return false;
}
}
}