/** Auxiliary for AttValPair.toString */
void toString(StringBuilder result) {
if (values != null) {
result.append('=').append(values.toString());
}
if (metaData != null) {
// add a marker indicating the presence of metadata
result.append('+');
}
}
/** Add another value, returning true if added (unique). */
boolean addValue(V value) {
boolean result = false;
if (value != null) {
if (values == null) {
values = new MultipleValuesContainer<V>(value);
result = true;
} else {
result = values.addValue(value);
}
}
return result;
}
/** Get all of this instance's values. */
List<V> getValues() {
return values == null ? null : values.getValues();
}
/** Get the value. */
V getValue() {
return values == null ? null : values.getValue();
}
/** Remove the given value, returning true if removed (existed). */
boolean removeValue(V value) {
return (values == null) ? false : values.removeValue(value);
}
/** Get the number of values. */
int getValuesCount() {
return values == null ? 0 : values.getValuesCount();
}
/** Determine whether there are multiple values. */
boolean hasMultipleValues() {
return values != null && values.hasMultipleValues();
}
