/*
* Copyright 2002-2009 the original author or authors.
*
* Licensed 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.springframework.mock.web;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import org.springframework.util.Assert;
import org.springframework.util.CollectionUtils;
/**
* Internal helper class that serves as value holder for request headers.
*
* @author Juergen Hoeller
* @author Rick Evans
* @since 2.0.1
*/
class HeaderValueHolder {
private final List<Object> values = new LinkedList<Object>();
public void setValue(Object value) {
this.values.clear();
this.values.add(value);
}
public void addValue(Object value) {
this.values.add(value);
}
public void addValues(Collection<?> values) {
this.values.addAll(values);
}
public void addValueArray(Object values) {
CollectionUtils.mergeArrayIntoCollection(values, this.values);
}
public List<Object> getValues() {
return Collections.unmodifiableList(this.values);
}
public List<String> getStringValues() {
List<String> stringList = new ArrayList<String>(this.values.size());
for (Object value : this.values) {
stringList.add(value.toString());
}
return Collections.unmodifiableList(stringList);
}
public Object getValue() {
return (!this.values.isEmpty() ? this.values.get(0) : null);
}
/**
* Find a HeaderValueHolder by name, ignoring casing.
* @param headers the Map of header names to HeaderValueHolders
* @param name the name of the desired header
* @return the corresponding HeaderValueHolder,
* or <code>null</code> if none found
*/
public static HeaderValueHolder getByName(Map<String, HeaderValueHolder> headers, String name) {
Assert.notNull(name, "Header name must not be null");
for (String headerName : headers.keySet()) {
if (headerName.equalsIgnoreCase(name)) {
return headers.get(headerName);
}
}
return null;
}
}
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