org.glassfish.jersey.internal.util.collection.MultivaluedStringMap Maven / Gradle / Ivy
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package org.glassfish.jersey.internal.util.collection;
import java.lang.reflect.Constructor;
import java.util.List;
import javax.ws.rs.core.MultivaluedHashMap;
import javax.ws.rs.core.MultivaluedMap;
/**
* An implementation of {@link MultivaluedMap} where keys and values are
* instances of String.
*
* This map has an additional ability to instantiate classes using the
* individual string values as a constructor parameters.
*
* @author Paul Sandoz
* @author Marek Potociar (marek.potociar at oracle.com)
*/
public class MultivaluedStringMap extends MultivaluedHashMap {
static final long serialVersionUID = -6052320403766368902L;
public MultivaluedStringMap(MultivaluedMap map) {
super(map);
}
public MultivaluedStringMap(int initialCapacity, float loadFactor) {
super(initialCapacity, loadFactor);
}
public MultivaluedStringMap(int initialCapacity) {
super(initialCapacity);
}
public MultivaluedStringMap() {
super();
}
@Override
protected void addFirstNull(List values) {
values.add("");
}
@Override
protected void addNull(List values) {
values.add(0, "");
}
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;
}
}