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/*
* 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.knox.gateway.dispatch;
import org.apache.knox.gateway.util.urltemplate.Params;
import javax.servlet.FilterConfig;
import javax.servlet.http.HttpServletRequest;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Set;
class DispatchParamResolver implements Params {
private FilterConfig config;
private HttpServletRequest request;
DispatchParamResolver( FilterConfig config, HttpServletRequest request ) {
this.config = config;
this.request = request;
}
@Override
public Set getNames() {
return Collections.emptySet();
}
@Override
public List resolve( String name ) {
List values = null;
if( request != null ) {
String[] array = request.getParameterValues( name );
if( array != null ) {
values = Arrays.asList( array );
return values;
}
}
if( config != null ) {
String value = config.getInitParameter( name );
if( value != null ) {
values = new ArrayList<>( 1 );
values.add( value );
return values;
}
}
return values;
}
}
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