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package com.sun.jersey.core.util;
import java.lang.reflect.Constructor;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import javax.ws.rs.core.MultivaluedMap;
/**
* An implementation of {@link MultivaluedMap} where keys and values are
* instances of String.
*
* @author [email protected]
*/
public class MultivaluedMapImpl
extends HashMap>
implements MultivaluedMap {
static final long serialVersionUID = -6052320403766368902L;
public MultivaluedMapImpl() { }
public MultivaluedMapImpl(MultivaluedMap that) {
for (Map.Entry> e : that.entrySet()) {
this.put(e.getKey(), new ArrayList(e.getValue()));
}
}
// MultivaluedMap
@Override
public final void putSingle(String key, String value) {
List l = getList(key);
l.clear();
if (value != null)
l.add(value);
else
l.add("");
}
@Override
public final void add(String key, String value) {
List l = getList(key);
if (value != null)
l.add(value);
else
l.add("");
}
@Override
public final String getFirst(String key) {
List values = get(key);
if (values != null && values.size() > 0)
return values.get(0);
else
return null;
}
//
public final void addFirst(String key, String value) {
List l = getList(key);
if (value != null)
l.add(0, value);
else
l.add(0, "");
}
public final List get(String key, Class type) {
Constructor c = null;
try {
c = type.getConstructor(String.class);
} catch (Exception ex) {
throw new IllegalArgumentException(type.getName()+" has no String constructor", ex);
}
ArrayList l = null;
List values = get(key);
if (values != null) {
l = new ArrayList();
for (String value: values) {
try {
l.add(c.newInstance(value));
} catch (Exception ex) {
l.add(null);
}
}
}
return l;
}
public final void putSingle(String key, Object value) {
List l = getList(key);
l.clear();
if (value != null)
l.add(value.toString());
else
l.add("");
}
public final void add(String key, Object value) {
List l = getList(key);
if (value != null)
l.add(value.toString());
else
l.add("");
}
private List getList(String key) {
List l = get(key);
if (l == null) {
l = new LinkedList();
put(key, l);
}
return l;
}
public final A getFirst(String key, Class type) {
String value = getFirst(key);
if (value == null)
return null;
Constructor c = null;
try {
c = type.getConstructor(String.class);
} catch (Exception ex) {
throw new IllegalArgumentException(type.getName()+" has no String constructor", ex);
}
A retVal = null;
try {
retVal = c.newInstance(value);
} catch (Exception ex) {
}
return retVal;
}
@SuppressWarnings("unchecked")
public final A getFirst(String key, A defaultValue) {
String value = getFirst(key);
if (value == null)
return defaultValue;
Class type = (Class)defaultValue.getClass();
Constructor c = null;
try {
c = type.getConstructor(String.class);
} catch (Exception ex) {
throw new IllegalArgumentException(type.getName()+" has no String constructor", ex);
}
A retVal = defaultValue;
try {
retVal = c.newInstance(value);
} catch (Exception ex) {
}
return retVal;
}
}