* This class is used as a workhorse delegate by both CQLRelation and * CQLProxNode - two functionally very separate classes that happen to - * require the same data structures and functionality. + * require similar data structures and functionality. + *
+ * A ModifierSet consists of a ``base'' string together with a set of
+ * zero or more type=value pairs, where both type and
+ * value are strings. Types may be null, values may not.
*
- * @version $Id: ModifierSet.java,v 1.1 2002-10-31 22:22:01 mike Exp $
+ * @version $Id: ModifierSet.java,v 1.7 2002-11-20 17:56:22 mike Exp $
*/
public class ModifierSet {
String base;
Vector modifiers;
+ /**
+ * Creates a new ModifierSet with the specified base.
+ */
public ModifierSet(String base) {
this.base = base;
modifiers = new Vector();
}
+ /**
+ * Returns the base string with which the ModifierSet was created.
+ */
+ public String getBase() {
+ return base;
+ }
+
+ /**
+ * Adds a modifier of the specified type and
+ * value to a ModifierSet.
+ */
public void addModifier(String type, String value) {
Vector modifier = new Vector();
modifier.add(type);
@@ -29,6 +47,27 @@ public class ModifierSet {
modifiers.add(modifier);
}
+ /**
+ * Returns the value of the modifier in the specified ModifierSet
+ * that corresponds to the specified type.
+ */
+ public String modifier(String type) {
+ int n = modifiers.size();
+ for (int i = 0; i < n; i++) {
+ Vector pair = (Vector) modifiers.get(i);
+ if (pair.get(0).equals(type))
+ return (String) pair.get(1);
+ }
+ return null;
+ }
+
+ /**
+ * Returns an array of the modifiers in a ModifierSet.
+ * @return
+ * An array of modifiers, each represented by a two-element
+ * Vector, in which element 0 is the modifier type and
+ * element 1 is the associated value.
+ */
public Vector[] getModifiers() {
int n = modifiers.size();
Vector[] res = new Vector[n];
@@ -50,18 +89,15 @@ public class ModifierSet {
for (int i = 0; i < mods.length; i++) {
Vector modifier = mods[i];
buf.append(Utils.indent(level+2)).
- append("