/*
* 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.karaf.packages.core.internal;
import org.apache.karaf.packages.core.internal.filter.AndExpression;
import org.apache.karaf.packages.core.internal.filter.Expression;
import org.apache.karaf.packages.core.internal.filter.FilterParser;
import org.apache.karaf.packages.core.internal.filter.NotExpression;
import org.apache.karaf.packages.core.internal.filter.SimpleItem;
/**
* Helps to parse the expression
*
* This class is internal to hide the FilterParser in the PackageService api
*/
class ImportDetails {
String name;
String minVersion;
String maxVersion;
public ImportDetails(String filter) {
Expression filterExpr = new FilterParser().parse(filter);
if (filterExpr instanceof AndExpression) {
AndExpression andExpr = (AndExpression)filterExpr;
for (Expression expr : andExpr.expressions) {
parseSimpleItem(expr);
}
}
parseSimpleItem(filterExpr);
}
private void parseSimpleItem(Expression expr) {
if (expr instanceof SimpleItem) {
SimpleItem simpleItem = (SimpleItem)expr;
if ("osgi.wiring.package".equals(simpleItem.attr)) {
this.name = simpleItem.value;
}
if ("version".equals(simpleItem.attr)) {
this.minVersion = simpleItem.value;
}
}
if (expr instanceof NotExpression) {
SimpleItem simpleItem = (SimpleItem)((NotExpression)expr).expression;
this.maxVersion = simpleItem.value;
}
}
}