/**
* Returns <tt>true</tt> if and only if this <tt>CompositeData</tt> instance contains an item
* whose name is <tt>key</tt>. If <tt>key</tt> is a null or empty String, this method simply
* returns false.
*/
public boolean containsKey(String key) {
if ((key == null) || (key.trim().equals(""))) {
return false;
}
return contents.containsKey(key);
}
private static SortedMap<String, Object> makeMap(String[] itemNames, Object[] itemValues)
throws OpenDataException {
if (itemNames == null || itemValues == null)
throw new IllegalArgumentException("Null itemNames or itemValues");
if (itemNames.length == 0 || itemValues.length == 0)
throw new IllegalArgumentException("Empty itemNames or itemValues");
if (itemNames.length != itemValues.length) {
throw new IllegalArgumentException(
"Different lengths: itemNames["
+ itemNames.length
+ "], itemValues["
+ itemValues.length
+ "]");
}
SortedMap<String, Object> map = new TreeMap<String, Object>();
for (int i = 0; i < itemNames.length; i++) {
String name = itemNames[i];
if (name == null || name.equals(""))
throw new IllegalArgumentException("Null or empty item name");
if (map.containsKey(name)) throw new OpenDataException("Duplicate item name " + name);
map.put(itemNames[i], itemValues[i]);
}
return map;
}
/**
* Returns the value of the item whose name is <tt>key</tt>.
*
* @throws IllegalArgumentException if <tt>key</tt> is a null or empty String.
* @throws InvalidKeyException if <tt>key</tt> is not an existing item name for this
* <tt>CompositeData</tt> instance.
*/
public Object get(String key) {
if ((key == null) || (key.trim().equals(""))) {
throw new IllegalArgumentException("Argument key cannot be a null or empty String.");
}
if (!contents.containsKey(key.trim())) {
throw new InvalidKeyException(
"Argument key=\""
+ key.trim()
+ "\" is not an existing item name for this CompositeData instance.");
}
return contents.get(key.trim());
}