X-Git-Url: http://sru.miketaylor.org.uk/?a=blobdiff_plain;f=src%2Forg%2Fz3950%2Fzing%2Fcql%2FCQLTermNode.java;h=9e7a7b91691fcbbd9359969023b3ea025885be1a;hb=77e96a476683020357b2c6e6fa661024698a20d8;hp=b12883e5acd39fcbb2d67fff7d02d3d0dd6d8b97;hpb=e52d49ef72a0d4531500e3e790fbe2e47fda8cba;p=cql-java-moved-to-github.git

diff --git a/src/org/z3950/zing/cql/CQLTermNode.java b/src/org/z3950/zing/cql/CQLTermNode.java
index b12883e..9e7a7b9 100644
--- a/src/org/z3950/zing/cql/CQLTermNode.java
+++ b/src/org/z3950/zing/cql/CQLTermNode.java
@@ -1,54 +1,137 @@
-// $Id: CQLTermNode.java,v 1.1 2002-10-25 07:38:17 mike Exp $
+// $Id: CQLTermNode.java,v 1.8 2002-11-06 20:13:45 mike Exp $
 
 package org.z3950.zing.cql;
+import java.util.Properties;
+import java.util.Vector;
 
 
 /**
- * Represents a terminal node in a CQL parse-tree ...
- * ###
+ * Represents a terminal node in a CQL parse-tree.
+ * A term node consists of the term String itself, together with,
+ * optionally, a qualifier string and a relation.  Neither or both of
+ * these must be provided - you can't have a qualifier without a
+ * relation or vice versa.
  *
- * @version	$Id: CQLTermNode.java,v 1.1 2002-10-25 07:38:17 mike Exp $
+ * @version	$Id: CQLTermNode.java,v 1.8 2002-11-06 20:13:45 mike Exp $
  */
-class CQLTermNode extends CQLNode {
+public class CQLTermNode extends CQLNode {
     private String qualifier;
-    private String relation;
-    private String value;
+    private CQLRelation relation;
+    private String term;
 
-    public CQLTermNode(String qualifier, String relation, String value) {
+    /**
+     * Creates a new term node with the specified <TT>qualifier</TT>,
+     * <TT>relation</TT> and <TT>term</TT>.  The first two may be
+     * <TT>null</TT>, but the <TT>term</TT> may not.
+     */
+    public CQLTermNode(String qualifier, CQLRelation relation, String term) {
 	this.qualifier = qualifier;
 	this.relation = relation;
-	this.value = value;
+	this.term = term;
     }
 
-    String toXCQL(int level) {
+    public String getQualifier() { return qualifier; }
+    public CQLRelation getRelation() { return relation; }
+    public String getTerm() { return term; }
+
+    public String toXCQL(int level) {
 	return (indent(level) + "<searchClause>\n" +
-		indent(level+1) + "<index>" + qualifier + "<index>\n" +
-		indent(level+1) + "<relation>" + relation + "<relation>\n" +
-		indent(level+1) + "<term>" + value + "<term>\n" +
+		indent(level+1) + "<index>" + xq(qualifier) + "</index>\n" +
+		relation.toXCQL(level+1) +
+		indent(level+1) + "<term>" + xq(term) + "</term>\n" +
 		indent(level) + "</searchClause>\n");
     }
 
-    String toCQL() {
-	String res = value;
+    public String toCQL() {
+	String quotedQualifier = maybeQuote(qualifier);
+	String quotedTerm = maybeQuote(term);
+	String res = quotedTerm;
+
+	if (!qualifier.equalsIgnoreCase("srw.serverChoice")) {
+	    // ### We don't always need spaces around `relation'.
+	    res = quotedQualifier + " " + relation.toCQL() + " " + quotedTerm;
+	}
+
+	return res;
+    }
+
+    public String toPQF(Properties config) throws PQFTranslationException {
+	Vector attrs = new Vector();
+
+	String attr;
+	attr = config.getProperty("qualifier." + qualifier);
+	if (attr == null)
+	    throw new UnknownQualifierException(qualifier);
+	attrs.add(attr);
+
+	String rel = relation.getBase();
+	if (rel.equals("=")) {
+	    rel = "eq";
+	} else if (rel.equals("<=")) {
+	    rel = "le";
+	} else if (rel.equals(">=")) {
+	    rel = "ge";
+	}
+	// ### Handling "any" and "all" properly would involve breaking
+	// the string down into a bunch of individual words and ORring
+	// or ANDing them together.  Another day.
+	attr = config.getProperty("relation." + rel);
+	if (attr == null)
+	    throw new UnknownRelationException(rel);
+	attrs.add(attr);
 
-	if (res.indexOf('"') != -1) {
-	    // ### precede each '"' with a '/'
+	String[] mods = relation.getModifiers();
+	for (int i = 0; i < mods.length; i++) {
+	    attr = config.getProperty("relationModifier." + mods[i]);
+	    if (attr == null)
+		throw new UnknownRelationModifierException(mods[i]);
+	    attrs.add(attr);
 	}
 
-	if (res.indexOf('"') != -1 ||
-	    res.indexOf(' ') != -1 ||
-	    res.indexOf('\t') != -1 ||
-	    res.indexOf('=') != -1 ||
-	    res.indexOf('<') != -1 ||
-	    res.indexOf('>') != -1 ||
-	    res.indexOf('/') != -1 ||
-	    res.indexOf('(') != -1 ||
-	    res.indexOf(')') != -1) {
-	    res = '"' + res + '"';
+	String pos = "unanchored";
+	String text = term;
+	if (text.length() > 0 && text.substring(0, 1).equals("^")) {
+	    text = text.substring(1);
+	    pos = "anchored";
+	}
+	attr = config.getProperty("position." + pos);
+	if (attr == null)
+	    throw new UnknownPositionException(pos);
+	attrs.add(attr);
+
+	attr = config.getProperty("structure." + rel);
+	if (attr == null)
+	    attr = config.getProperty("structure.*");
+	attrs.add(attr);
+
+	attr = config.getProperty("always");
+	if (attr != null)
+	    attrs.add(attr);
+
+	String s = "";
+	for (int i = 0; i < attrs.size(); i++) {
+	    attr = (String) attrs.get(i);
+	    s += "@attr " + Utils.replaceString(attr, " ", " @attr ") + " ";
+	}
+
+	return s + maybeQuote(text);
+    }
+
+    static String maybeQuote(String str) {
+	// There _must_ be a better way to make this test ...
+	if (str.length() == 0 ||
+	    str.indexOf('"') != -1 ||
+	    str.indexOf(' ') != -1 ||
+	    str.indexOf('\t') != -1 ||
+	    str.indexOf('=') != -1 ||
+	    str.indexOf('<') != -1 ||
+	    str.indexOf('>') != -1 ||
+	    str.indexOf('/') != -1 ||
+	    str.indexOf('(') != -1 ||
+	    str.indexOf(')') != -1) {
+	    str = '"' + Utils.replaceString(str, "\"", "\\\"") + '"';
 	}
 
-	// ### The qualifier may need quoting.
-	// ### We don't always need spaces around `relation'.
-	return qualifier + " " + relation + " " + value;
+	return str;
     }
 }