/*
* 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.ivy.osgi.filter;
public abstract class UniOperatorFilter extends OSGiFilter {
private final OSGiFilter subFilter;
public UniOperatorFilter(OSGiFilter subFilter) {
this.subFilter = subFilter;
}
abstract protected char operator();
@Override
public void append(StringBuffer builder) {
builder.append("(");
builder.append(operator());
builder.append(subFilter.toString());
builder.append(")");
}
public OSGiFilter getSubFilter() {
return subFilter;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((subFilter == null) ? 0 : subFilter.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (!(obj instanceof UniOperatorFilter)) {
return false;
}
UniOperatorFilter other = (UniOperatorFilter) obj;
if (subFilter == null) {
if (other.subFilter != null) {
return false;
}
} else if (!subFilter.equals(other.subFilter)) {
return false;
}
return true;
}
}