X-Git-Url: http://jsfdemo.indexdata.com/?a=blobdiff_plain;f=src%2Forg%2Fz3950%2Fzing%2Fcql%2FCQLRelation.java;h=6f007bc41dcf5d93184d7a3d7769a7dba79f928f;hb=d437bf5b5983b0c7e3a43ab5e5cb5d6b1670896c;hp=f82b91e36196bed407d877e20c37d3e05e694a44;hpb=1dde5651ae05693f3afd0fa286c30dfa0d40c4e2;p=cql-java-moved-to-github.git

diff --git a/src/org/z3950/zing/cql/CQLRelation.java b/src/org/z3950/zing/cql/CQLRelation.java
index f82b91e..6f007bc 100644
--- a/src/org/z3950/zing/cql/CQLRelation.java
+++ b/src/org/z3950/zing/cql/CQLRelation.java
@@ -1,4 +1,4 @@
-// $Id: CQLRelation.java,v 1.4 2002-11-06 00:14:32 mike Exp $
+// $Id: CQLRelation.java,v 1.7 2002-11-20 01:15:15 mike Exp $
 
 package org.z3950.zing.cql;
 import java.util.Vector;
@@ -7,28 +7,59 @@ import java.lang.StringBuffer;
 
 /**
  * Represents a relation between a CQL qualifier and term.
- * ##
  *
- * @version	$Id: CQLRelation.java,v 1.4 2002-11-06 00:14:32 mike Exp $
+ * @version	$Id: CQLRelation.java,v 1.7 2002-11-20 01:15:15 mike Exp $
  */
 public class CQLRelation extends CQLNode {
     ModifierSet ms;
 
+    /**
+     * Creates a new CQLRelation with the specified base relation.
+     * Typical base relations include the usual six ordering relations
+     * (<TT>&lt;=</TT>, <TT>&gt</TT>, <I>etc.</I>), the text
+     * relations <TT>any</TT>, <TT>all</TT> and <TT>exact</TT> and the
+     * server-choice relation <TT>scr</TT>.
+     */
     public CQLRelation(String base) {
 	ms = new ModifierSet(base);
     }
 
+    /**
+     * Returns the base relation with which the CQLRelation was
+     * originally created.
+     */
     public String getBase() {
 	return ms.getBase();
     }
 
+    /**
+     * Adds a new relation modifier to the specified CQLRelation.
+     * Typical relation modifiers include <TT>relevant</TT>,
+     * <TT>fuzzy</TT>, <TT>stem</TT> and <TT>phonetic</TT>.  On the
+     * whole, these modifiers have a meaningful interpretation only
+     * for the text relations.
+     */
     public void addModifier(String modifier) {
 	ms.addModifier(null, modifier);
     }
 
-    // ### should have a public method to retrieve all modifiers
+    /**
+     * Returns an array of the modifiers associated with a CQLRelation.
+     * @return
+     *	An array of zero or more <TT>String</TT>s, each representing a
+     *	modifier associated with the specified CQLRelation.
+     */
+    public String[] getModifiers() {
+	Vector[] v = ms.getModifiers();
+	int n = v.length;
+	String[] s = new String[n];
+	for (int i = 0; i < n; i++) {
+	    s[i] = (String) v[i].get(1);
+	}
+	return s;
+    }
 
-    public String toXCQL(int level) {
+    public String toXCQL(int level, Vector prefixes) {
 	return ms.toXCQL(level, "relation");
     }
 
@@ -36,8 +67,7 @@ public class CQLRelation extends CQLNode {
 	return ms.toCQL();
     }
 
-    public String toPQF(Properties config)
-	throws UnknownQualifierException, UnknownRelationException {
-	throw Error("CQLRelation.toPQF() can never be called");
+    public String toPQF(Properties config) throws PQFTranslationException {
+	throw new Error("CQLRelation.toPQF() can never be called");
     }
 }